(19)
(11) EP 2 899 459 A1

(12) EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(43) Date of publication:
29.07.2015 Bulletin 2015/31

(21) Application number: 12877464.3

(22) Date of filing: 07.06.2012
(51) International Patent Classification (IPC): 
F21V 29/00(2015.01)
F21Y 101/02(2006.01)
(86) International application number:
PCT/CN2012/076602
(87) International publication number:
WO 2013/174039 (28.11.2013 Gazette 2013/48)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 23.05.2012 CN 201210163324

(71) Applicant: Wuxi Air Electronics Company Limited
Jiangsu 214028 (CN)

(72) Inventor:
  • Gu, Yitian
    Wuxi Jiangsu 214028 (CN)

(74) Representative: Demski, Siegfried 
Demski & Nobbe Patentanwälte Tonhallenstraße 16
47051 Duisburg
47051 Duisburg (DE)

   


(54) COMBINED TYPE THREE-DIMENSIONAL HEAT RADIATION STRUCTURE AND METHOD FULLY UTILIZING HEAT RADIATION SPACE FOR LED LAMP


(57) The present invention relates to the technical field of LED lamp manufacturing, more particularly to an LED lamp combined three-dimensional radiating structure with full use of radiating space. The LED lamp combined three-dimensional radiating structure is formed by combining an external radiating body with an internal radiating body, the bottom of the internal radiating body is connected with an LED display panel, the top of the external radiating body is connected with a lamp interface and power supply box, a combined and discontinuous multilayer three-dimensional radiating structure consisting of a plurality of radiating fins is disposed on the top of the internal radiating body, and a hollow cavity is formed between the adjacent radiating fins. In the present invention, the combined three-dimensional radiating structure is employed at the center with the most concentrated heat, thus increasing the total radiating area, maximizing the effective radiating area and effectively solving the defects like low utilization rate of radiating space and non-permeable internal space structure; in addition, compared with traditional LED lamps, both the radiating effect and the output brightness are doubled.




Description

Technical Field



[0001] The present invention relates to the technical field of LED lamp manufacturing, more particularly to an LED lamp combined three-dimensional radiating structure with full use of radiating space.

Background



[0002] With the growing popularity of LED lamps, they have become indispensable in either large-scale outdoor exhibition or household lighting, however, their brightness usually couldn't reach the level of traditional lamps because their reliability is affected by radiating problem negatively, therefore, they fail to take the place of traditional lamps directly, for example, a 50W halogen lamp is capable of outputting 270K 610LM luminous flux in warm white, whereas an MR16 LED with the same power can only realize half of the brightness of traditional halogen lamps in general; a traditional 150W PAR38 halogen lamp is capable of outputting 2700K 2000LM luminous flux in warm white, but an LED PAR38 lamp typically outputs luminous flux that is not more than 1000LM.

[0003] The radiating bodies of a conventional LED lamp are integrally structured owing to the problem of machining process, for example, an aluminum extrusion and aluminum casting process is adopted; the central internal space of this lamp is a solid structure under the limitation of the integral structure, so it is not utilized, besides, this central internal space of the LED lamp is a space with the most concentrated heat, thus permeability in three directions X, Y and Z cannot be realized owing to the integral radiating structure, and the radiating bodies block each other to lead to low cold-heat exchange efficiency between radiating surfaces and cold air, insufficient use of radiating space and inferior radiating effect, as a result, this conventional LED lamp cannot take the place of traditional lamps directly. For example, China Patent 201030281472.1 discloses an LED lamp radiator having an integral shape of inverted pot and achieving radiating action by means of peripheral ridge-shaped clearances, but its machining process is the technology of integral molding, which could result in the above defect.

[0004] Although a structurally-split radiating lamp casing is disclosed in this China Patent 201030281472.1, this casing has a radiating component inside that is composed of a radiating ring and radiating ribs having rugged surfaces and vertically fixed on the radiating ring, and the radiating rib is structurally formed by three rectangle-like radiating plates having rugged surfaces and spaced apart from each other by 120 degrees based on a vertical axis as center, in this case, only longitudinal radiation is accomplished, airtightness still remains in the horizontal direction.

Summary of the Invention



[0005] An objective of the present invention is to solve the problem of uneven radiation in the prior art, and provide a novel combined three-dimensional radiating structure with high radiating efficiency and high utilization rate of space.

[0006] To reach the objective above, an LED lamp combined three-dimensional radiating structure with full use of radiating space is designed, comprising a lens, an LED display panel, and a lamp interface and power supply box; the LED lamp combined three-dimensional radiating structure is formed by combining an external radiating cup with an internal radiating body, the internal radiating body is externally covered by the external radiating cup, the bottom of the internal radiating body is connected with the LED display panel, the top of the external radiating body is connected with the lamp interface and power supply box, a combined and discontinuous multilayer three-dimensional radiating structure consisting of a plurality of radiating fins is disposed on the top of the internal radiating body, and a hollow cavity is formed between the adjacent radiating fins.

[0007] Hollow cavities, connected with each other but discontinuous, are formed between the external radiating cup and the internal radiating body, in this way, extremely good cold-heat convection passages are formed in three directions X, Y and Z, the radiating capability of the internal radiating body is improved, and strong cold-heat exchange capability is realized.

[0008] A hollow cavity is formed between the internal radiating body and the lamp interface and power supply box, thus facilitating sufficient exchange between the heat of the internal radiator and the cold air, protecting power supply part from overheating, and further prolonging the life of power supply.

[0009] A plurality of vent holes or vent grooves are disposed on the external radiating cup, thus facilitating sufficient exchange between the heat of the internal radiator and the external cold air.

[0010] The LED lamp combined three-dimensional radiating structure consists of the internal radiating body and one or more external radiating cups.

[0011] A plurality of LED display surface vent grooves are disposed on the internal radiating body, thus facilitating sufficient heat exchange of the internal radiator in the vertical direction.

[0012] The circular surface of the internal radiating body is a radiating surface 15, a cylindrical radiating surface 14 is disposed on the circular center of the internal radiating body, a plurality of layers of discontinuous three-dimensional radiating fins are disposed at the outer side of the cylindrical radiating surface 14 along the circular center direction of the internal radiating body, radiating surfaces 12 and 13 are respectively disposed on the front and back surfaces of each layer of the radiating fin, and radiating surfaces 16 are disposed on the front and back surfaces of the external radiating cup.

[0013] A combined three-dimensional radiating structure for MR16LED lamp comprises a lens, an LED display panel, and a lamp interface and power supply box, and is characterized in that: the combined three-dimensional radiating structure is formed by combining an external radiating cup with an internal radiating body, a cylindrical radiating surface 14 is disposed on the center of the internal radiating body, two three-dimensional radiating layers are disposed at the outer ring of the cylindrical radiating surface 14 equidistantly, each three-dimensional radiating layer consists of four fan-shaped three-dimensional radiating fins with hollow cavities therebetween, four LED display surface vent grooves are disposed on the internal radiating body and also arranged at the outer side of the fan-shaped three-dimensional radiating fins at the outer layer, four vent grooves are disposed on the external radiating cup, hollow cavities are formed between the external radiating cup and the internal radiating body, and a hollow cavity is formed between the internal radiating body and the lamp interface and power supply box.

[0014] The cylindrical radiating surface 14 and the two three-dimensional radiating layers together form a combined and discontinuous multilayer three-dimensional radiating structure.

[0015] A radiating method with full use of radiating space for LED lamp is characterized in that, the method specifically comprises:
  1. a. radiating area is increased, the internal and external radiating bodies are combined, one or more external radiating cups are used as the external radiating body, and grooves or holes are formed on the external radiating cup, so that the inner and outer surfaces of the external radiating cup can complete radiating and cold-heat exchange can be conveniently implemented by the internal and external radiating bodies;
  2. b. the internal space of a lamp is fully used, an LED display surface is moved forwards and the space for a power supply is diminished, so the internal space is turned into the combined and discontinuous multilayer three-dimensional radiating structure;
  3. c. the radiating structure is made permeable to improve the radiating effect of the internal and external radiating bodies, and the radiating body-combined structure as below is employed: hollow cavities are formed between the radiating bodies, grooves are formed on the external radiating cup, and grooves are formed on the internal radiating body along the display panel direction, so a three-dimensional heat convection passage in three directions including X, Y and Z is formed.
  4. d. the ambient temperature of a power supply in the power supply box is lowered to prolong the life of the power supply, and a hollow cavity is formed between the internal radiating body and the lamp interface and power supply box.


[0016] A radiating method with full use of luminous bulb space for LED bulb lamp is characterized in that, the method specifically comprises: the whole bulb luminous body of an LED bulb lamp is divided into a plurality of independent luminous bodies with hollow cavities therebetween, and the entire bulb space is opened, in this way, the radiating surface at the hollow cavity is increased, and a vertical heat convection passage is also opened.

[0017] A combined three-dimensional radiating structure for LED bulb lamp comprises lampshades, an LED display panel, a luminous surface radiating body, an internal radiating body, an external radiating cup, and a lamp interface and power supply box, and is characterized in that, the combined three-dimensional radiating structure consists of the luminous surface radiating body, the internal radiating body and the external radiating cup, the bottom of the luminous surface radiating body is connected with the LED display panel, the top of the luminous surface radiating body is connected with the internal radiating body, the top of the internal radiating body is covered by the external radiating cup, a plurality of radiating fins that are inclined with respect to the surface of the luminous surface radiating body are disposed in the middle of the luminous surface radiating body, the bottom of the luminous surface radiating body is covered by a plurality of discontinuous lampshades, a plurality of discontinuous multilayer three-dimensional radiating fins are disposed on the internal radiating body, and a plurality of grooves or holes are disposed on the external radiating cup.

[0018] The external radiating cup is provided with a cup body inside radiating surface and a cup body outside radiating surface, the internal radiating body is provided with multilayer three-dimensional radiating fins to form a radiating surface, and the luminous surface radiating body is provided with radiating fins among the discontinuous lampshades and radiating fins at the rear part of the LED display panel.

[0019] Hollow cavities are formed among the multilayer radiating fins on the internal radiating body, the luminous surface radiating body is provided with radiating surface hollow cavities among the discontinuous lampshades, a hollow cavity is formed between the external radiating cup and the internal radiating body, and a hollow cavity is formed between the lamp interface and power supply box and the internal radiating body.

[0020] A combined three-dimensional radiating structure for Par38 LED bulb lamp comprises a cover plate, a lens, an LED display panel, an internal radiating body, an external radiating cup, and a lamp interface and power supply box, and is characterized in that, the combined three-dimensional radiating structure consists of the cover plate, the internal radiating body and the external radiating cup, the bottom of the internal radiating body is connected with the cover plate, the top of the internal radiating body is covered by the external radiating cup, a plurality of discontinuous multilayer three-dimensional radiating fins are disposed on the internal radiating body, a plurality of vent grooves for the external radiating cup are disposed on the external radiating cup, hollow cavities are formed among the multilayer three-dimensional radiating fins of the internal radiating body, an LED display surface vent groove is disposed at the intersection between the vertical surface of the internal radiating body and the internal radiating body, a cover plate vent groove corresponding to the LED display surface vent groove is disposed on the cover plate, a hollow cavity is formed between the external radiating cup and the internal radiating body, and a hollow cavity is formed between the lamp interface and power supply box and the internal radiating body.

[0021] The external radiating cup is provided with a cup body inside radiating surface and a cup body outside radiating surface, and the internal radiating body is provided with discontinuous multilayer three-dimensional radiating fins to form a radiating surface.

[0022] Compared with the integrated radiating structure in traditional lamps, the present invention employs the combined three-dimensional radiating structure at the center with the most concentrated heat, thus increasing the total radiating area, maximizing the effective radiating area and effectively solving the defects in the traditional radiating structure,like low utilization rate of radiating space and non-permeable internal space structure; in addition, compared with traditional LED lamps, both the radiating effect and the output brightness are doubled on the premise of the same radiating volume and service life; the design of a plurality of hollow cavities, holes and grooves brings extremely good cold-heat convection passages in three directions X, Y and Z, therefore, air throughput in the radiating structure is increased so as to bring faster heat exchange and radiating effect.

Brief Description of the Drawings



[0023] 

Figure 1 is a schematic diagram showing the split structure in accordance with the present invention;

Figure 2 is a schematic diagram showing the radiating body structure in accordance with the present invention;

Figure 3 is a side sectional view showing the radiating body in accordance with the present invention;

Figure 4 is a schematic diagram showing the split structure of the traditional MR16LED lamp;

Figure 5 is a schematic diagram showing the radiating surface structure of the traditional MR16LED lamp;

Figure 6 is a side sectional view showing the traditional MR16LED lamp;

Figure 7 is a schematic diagram showing the split structure of the combined LED bulb lamp in accordance with the present invention;

Figure 8 is a schematic diagram showing the combined body structure of the combined LED bulb lamp in accordance with the present invention;

Figure 9 is a schematic diagram showing the characteristic structure of the radiating surface of the combined LED bulb lamp in accordance with the present invention;

Figure 10 is a schematic diagram showing the characteristic structure of the radiating body of the combined LED bulb lamp in accordance with the present invention;

Figure 11 is a sectional view showing the radiating body of the combined LED bulb lamp in accordance with the present invention;

Figure 12 is a schematic diagram showing the split structure of the combined par38 LED lamp in accordance with the present invention;

Figure 13 is a schematic diagram showing the combined body structure of the combined par38 LED lamp in accordance with the present invention;

Figure 14 is a schematic diagram showing the characteristic structure of the radiating surface of the combined par38 LED lamp in accordance with the present invention;

Figure 15 is a schematic diagram showing the characteristic structure of the radiating body of the combined par38 LED lamp in accordance with the present invention;

Figure 16 is a sectional view showing the combined body structure of the combined par38 LED lamp in accordance with the present invention;



[0024] In the drawings: 1. Radiating cup 2. Internal radiating body 3. Lens 4. LED display panel 5. Lamp interface and power supply box 6. Radiating cup vent groove 7. Cover plate 8. LED display surface vent groove 9. Hollow cavity between radiating fins 10. Hollow cavity between internal radiating body and power supply box 11. Hollow cavity between internal radiating body and radiating cup 12-16. Radiating surfaces of radiating fins 17. Radiating cup of traditional MR16LED lamp 18. Lens of traditional MR16LED lamp 19. LED display panel of traditional MR16LED lamp 20. Lamp interface and power supply box of traditional MR16LED lamp 21-25. Radiating surfaces of radiating cup of traditional MR16LED lamp 26. Central internal closed space of traditional MR16LED lamp 27. Outside radiating surface 28. Inside radiating surface 29. Discontinuous multilayer three-dimensional radiating fin 30. External radiating body vent groove 31. Cover plate vent groove 32. Hollow cavity between lamp interface and power supply box and internal radiating body 33. Luminous surface radiating body 34. Lampshade 35. Radiating surface between discontinuous lampshades 36. Radiating surface at the rear part of LED display panel 37. External radiating cup vent groove 38. Radiating surface hollow cavity between discontinuous lampshades

Detailed Description of the Embodiments



[0025] The present invention will be further described below with reference to the accompanying drawings, and for those skilled in this art, its shape and structure are implementable.

[0026] A traditional MR16LED lamp is obtained by connecting and installing the following components in a way as shown in Figure 4: either an external radiator or an internal radiator (a radiating cup 17 is adopted in this embodiment), a lens 18, an LED display panel 19 and a lamp interface and power supply box 20, the radiating part of the traditional MR16LED lamp, as shown in Figure 5, is that the radiating cup 17 is equidistantly surrounded by fan-shaped radiating fins, thus forming a radiating area as below: (radiating surface 21+radiating surface 22+radiating surface 23+radiating surface 24+radiating surface 25)*18=6500 square millimeters, and the interior of a traditional radiator, as shown in Figure 6, is solid or is a cavity for placing power supply, and thus cannot be used, in this case, uneven radiation of the traditional radiator is caused.

[0027] To thoroughly solve the radiating problem in traditional LED lamps, a unique radiating structure is designed in the present invention, i.e. a combined three-dimensional radiating structure.

[0028] This radiating structure is specifically constructed as shown in Figure 2 and consists of an internal radiating body 2 and one or more radiating cups 1, the whole external shape of the radiating cup 1 is like an inverted pot, a circular through hole is formed by digging at the center of the circular horizontal surface on the top of the radiating cup 1 and has a diameter consistent with the inner diameter of a cylindrical hollow radiating fin at the center of the internal radiating body 2, two circular through holes with equal diameter are formed by digging at the bilateral symmetry positions of this circular through hole, and these two circular through holes have diameters consistent with the inner diameters of two symmetrical cylindrical hollow radiating fins at the corresponding positions inside the internal radiating body 2, and four vertical projection surfaces are formed as round-cornered and rectangular vent grooves 6 by digging at the quarterline of the circular horizontal surface on the top of the radiating cup.

[0029] The internal structure of the internal radiating body 2 is mainly composed of discontinuous multilayer three-dimensional radiating fins, a cylindrical hollow radiating fin 14 is disposed on the center of a disc-shaped base, two cylindrical hollow radiating fins with equal inner and outer diameters are installed respectively at the bilateral symmetry positions of this cylindrical hollow radiating fin 14, two layers of discontinuous circular-arc radiating fins 12 and 13 are distributed from inside to outside on the quarterline of the disc-shaped base in case that the central cylindrical hollow radiating fin 14 is regarded as reference, hollow cavities are formed between the circular-arc radiating fins at the inner layer and the circular-arc radiating fins at the outer layer, and connection lines between the two ends of the circular-arc radiating fin at the inner layer and the circle center of the central cylindrical hollow radiating fin 14 as well as connection lines between the two ends of the circular-arc radiating fin at the outer layer and the circle center of the central cylindrical hollow radiating fin 14 form a fan shape, and four vertical projection surfaces are formed by digging at positions to which four circular-arc radiating fins at the outer layer are adjacent in an outward direction, so as to serve as LED display panel vent grooves 8, in this way, sufficient exchange between heat of the internal radiator and external cold air is facilitated.

[0030] The number and shape of the radiating fins of the internal radiating body and the spacing therebetween can be determined based on the space of a specific lamp; the number and size of the radiating cup can be determined as required by the specific lamp shape, and the radiating cup consists of one or more than two radiating bodies. The obtainable radiating area in this embodiment is that: radiating surface 12*8+radiating surface 13*8+radiating surface 14+radiating surface 15+raditing 16*8=15000 square millimeters; double-surface radiating effect can be realized in one radiating body owing to the three-dimensional radiating structure, so double surfaces of radiating area, i.e. front and back surfaces, are calculated.

[0031] The external radiating cup 1, the internal radiating body 2, the lens 3, the LED display panel 4 and the lamp interface and power supply box 5 are connected in a way as shown in Figure 1, specifically, the radiating cup 1 is sleeved above the internal radiating body 2, the top of the external radiating cup 1 is connected with the lamp interface and power supply box 5, the bottom of the internal radiating body 1 is connected with the LED display panel 4, and the lens 3 is installed at the bottom of the LED display panel 4, in this way, an LED lamp as shown in Figure 3 is obtained.

[0032] As shown in Figure 3, a hollow cavity is formed between the internal radiating body 2 and the lamp interface and power supply box 5 to facilitate sufficient exchange between heat of the internal radiator and cold air, which not only improves the permeability of the radiating structure, but also protects power supply portion from overheating to further prolong the life of power supply.

[0033] The present invention further comprises a radiating method with full use of luminous bulb space for LED bulb lamp and a device thereof, as shown in Figure 7.

[0034] The method for such an LED bulb lamp is specifically as follows: the whole bulb luminous body of the LED bulb lamp is divided into a plurality of independent luminous bodies with hollow cavities therebetween, and the entire bulb space is opened, in this way, the radiating surface at the hollow cavity is increased, and a vertical heat convection passage is also opened.

[0035] The structure for the LED bulb lamp in the present invention comprises lampshades, an LED display panel, a luminous surface radiating body, an internal radiating body, an external radiating cup, and a lamp interface and power supply box, the combined three-dimensional radiating structure consists of the luminous surface radiating body, the internal radiating body and the external radiating cup, the bottom of the luminous surface radiating body is connected with the LED display panel, the top of the luminous surface radiating body is connected with the internal radiating body, the top of the internal radiating body is covered by the external radiating cup, a plurality of radiating fins that are inclined with respect to the surface of the luminous surface radiating body are disposed in the middle of the luminous surface radiating body, the bottom of the luminous surface radiating body is covered by a plurality of discontinuous lampshades, a plurality of discontinuous multilayer three-dimensional radiating fins are disposed on the internal radiating body, and a plurality of grooves or holes are disposed on the external radiating cup. The external radiating cup is provided with a cup body inside radiating surface and a cup body outside radiating surface, the internal radiating body is provided with multilayer three-dimensional radiating fins to form a radiating surface, and the luminous surface radiating body is provided with radiating fins among the discontinuous lampshades and radiating fins at the rear part of the LED display panel. Hollow cavities are formed among the multilayer radiating fins on the internal radiating body, the luminous surface radiating body is provided with radiating surface hollow cavities among the discontinuous lampshades, hollow cavities are formed between the external radiating cup and the internal radiating body, and a hollow cavity is formed between the lamp interface and power supply box and the internal radiating body.

[0036] The present invention further comprises a combined three-dimensional radiating structure for Par38 LED lamp, comprising a cover plate, a lens, an LED display panel, an internal radiating body, an external radiating cup, and a lamp interface and power supply box, the combined three-dimensional radiating structure consists of the cover plate, the internal radiating body and the external radiating cup, the bottom of the internal radiating body is connected with the cover plate, the top of the internal radiating body is covered by the external radiating cup, a plurality of discontinuous multilayer three-dimensional radiating fins are disposed on the internal radiating body, a plurality of vent grooves for the external radiating cup are disposed on the external radiating cup, hollow cavities are formed among the multilayer three-dimensional radiating fins of the internal radiating body, an LED display surface vent groove is disposed at the intersection between the vertical surface of the internal radiating body and the internal radiating body, a cover plate vent groove corresponding to the LED display surface vent groove is disposed on the cover plate, hollow cavities are formed between the external radiating cup and the internal radiating body, and a hollow cavity is formed between the lamp interface and power supply box and the internal radiating body. The external radiating cup is provided with a cup body inside radiating surface and a cup body outside radiating surface, and the internal radiating body is provided with discontinuous multilayer three-dimensional radiating fins to form a radiating surface.


Claims

1. Ah LED lamp combined three-dimensional radiating structure with full use of radiating space, comprising a lens, an LED display panel and a lamp interface and power supply box, characterized in that: the LED lamp combined three-dimensional radiating structure is formed by combining an external radiating body with an internal radiating body, the internal radiating body is externally covered by an external radiating cup, the bottom of the internal radiating body is connected with the LED display panel, the top of the external radiating body is connected with the lamp interface and power supply box, a combined and discontinuous multilayer three-dimensional radiating structure consisting of a plurality of radiating fins is disposed on the top of the internal radiating body, and a hollow cavity is formed between the adjacent radiating fins.
 
2. The LED lamp combined three-dimensional radiating structure with full use of radiating space according to claim 1, characterized in that, hollow cavities are formed between the external radiating cup and the internal radiating body.
 
3. The LED lamp combined three-dimensional radiating structure with full use of radiating space according to claim 1, characterized in that, a hollow cavity is formed between the internal radiating body and the lamp interface and power supply box.
 
4. The LED lamp combined three-dimensional radiating structure with full use of radiating space according to claim 1, characterized in that, a plurality of vent holes or vent grooves are disposed on the external radiating cup.
 
5. The LED lamp combined three-dimensional radiating structure with full use of radiating space according to claim 1, characterized in that, the LED lamp combined three-dimensional radiating structure consists of the internal radiating body and one or more external radiating cups.
 
6. The LED lamp combined three-dimensional radiating structure with full use of radiating space according to claim 1, characterized in that, a plurality of LED display surface vent grooves are disposed on the internal radiating body.
 
7. The LED lamp combined three-dimensional radiating structure with full use of radiating space according to claim 1, characterized in that, the circular surface of the internal radiating body is a radiating surface 15, a cylindrical radiating surface 14 is disposed on the circular center of the internal radiating body, a plurality of layers of discontinuous three-dimensional radiating fins are disposed at the outer side of the cylindrical radiating surface 14 along the circular center direction of the internal radiating body, radiating surfaces 12 and 13 are respectively disposed on the front and back surfaces of each layer of the radiating fin, and radiating surfaces 16 are disposed on the front and back surfaces of the external radiating cup.
 
8. A combined three-dimensional radiating structure for MR16LED lamp, comprising a lens, an LED display panel, and a lamp interface and power supply box, characterized in that: the combined three-dimensional radiating structure is formed by combining an external radiating cup with an internal radiating body, a cylindrical radiating surface 14 is disposed on the center of the internal radiating body, two three-dimensional radiating layers are disposed at the outer ring of the cylindrical radiating surface 14 equidistantly, each three-dimensional radiating layer consists of four fan-shaped three-dimensional radiating fins with hollow cavities therebetween, four LED display surface vent grooves are disposed on the internal radiating body and also arranged at the outer side of the fan-shaped three-dimensional radiating fins at the outer layer, four vent grooves are disposed on the external radiating cup, hollow cavities are formed between the external radiating cup and the internal radiating body, and a hollow cavity is formed between the internal radiating body and the lamp interface and power supply box.
 
9. The combined three-dimensional radiating structure for MR16LED lamp according to claim 8, characterized in that, the cylindrical radiating surface 14 and the two three-dimensional radiating layers together form a combined and discontinuous multilayer three-dimensional radiating structure.
 
10. A radiating method with full use of radiating space for LED lamp, characterized in that, the method specifically comprises:

a. the radiating area is increased, the internal and external radiating bodies are combined, one or more external radiating cups are used as the external radiating body, and grooves or holes are formed on the external radiating cup, so that the inner and outer surfaces of the external radiating cup can complete radiating and cold-heat exchange can be conveniently implemented by the internal and external radiating bodies;

b. the internal space of a lamp is fully used, an LED display surface is moved forwards and the space for a power supply is diminished, so the internal space is turned into the combined and discontinuous multilayer three-dimensional radiating structure;

c. the radiating structure is made permeable to improve the radiating effect of the internal and external radiating bodies, and the radiating body-combined structure as below is employed: hollow cavities are formed between the radiating bodies, grooves are formed on the external radiating cup, and grooves are formed on the internal radiating body along the display panel direction, so a three-dimensional heat convection passage in three directions including X, Y and Z is formed;

d. the ambient temperature of a power supply in the power supply box is lowered to prolong the life of the power supply, and a hollow cavity is formed between the internal radiating body and the lamp interface and power supply box.


 
11. A radiating method with full use of luminous bulb space for LED bulb lamp, characterized in that, the method specifically comprises:

the whole bulb luminous body of an LED bulb lamp is divided into a plurality of independent luminous bodies with hollow cavities therebetween, and the entire bulb space is opened, in this way, the radiating surface at the hollow cavity is increased, and a vertical heat convection passage is also opened.


 
12. A combined three-dimensional radiating structure for LED bulb lamp, comprising lampshades, an LED display panel, a luminous surface radiating body, an internal radiating body, an external radiating cup, and a lamp interface and power supply box, characterized in that, the combined three-dimensional radiating structure consists of the luminous surface radiating body, the internal radiating body and the external radiating cup, the bottom of the luminous surface radiating body is connected with the LED display panel, the top of the luminous surface radiating body is connected with the internal radiating body, the top of the internal radiating body is covered by the external radiating cup, a plurality of radiating fins that are inclined with respect to the surface of the luminous surface radiating body are disposed in the middle of the luminous surface radiating body, the bottom of the luminous surface radiating body is covered by a plurality of discontinuous lampshades, a plurality of discontinuous multilayer three-dimensional radiating fins are disposed on the internal radiating body, and a plurality of grooves or holes are disposed on the external radiating cup.
 
13. The combined three-dimensional radiating structure for LED bulb lamp according to claim 12, characterized in that, the external radiating cup is provided with a cup body inside radiating surface and a cup body outside radiating surface, the internal radiating body is provided with multilayer three-dimensional radiating fins to form a radiating surface, and the luminous surface radiating body is provided with radiating fins among the discontinuous lampshades and radiating fins at the rear part of the LED display panel.
 
14. The combined three-dimensional radiating structure for LED bulb lamp according to claim 12, characterized in that, hollow cavities are formed among the multilayer radiating fins on the internal radiating body, the luminous surface radiating body is provided with radiating surface hollow cavities among the discontinuous lampshades, hollow cavities are formed between the external radiating cup and the internal radiating body, and a hollow cavity is formed between the lamp interface and power supply box and the internal radiating body.
 
15. A combined three-dimensional radiating structure for Par38 LED bulb lamp, comprising a cover plate, a lens, an LED display panel, an internal radiating body, an external radiating cup, and a lamp interface and power supply box, characterized in that, the combined three-dimensional radiating structure consists of the cover plate, the internal radiating body and the external radiating cup, the bottom of the internal radiating body is connected with the cover plate, the top of the internal radiating body is covered by the external radiating cup, a plurality of discontinuous multilayer three-dimensional radiating fins are disposed on the internal radiating body, a plurality of vent grooves for the external radiating cup are disposed on the external radiating cup, hollow cavities are formed among the multilayer three-dimensional radiating fins of the internal radiating body, an LED display surface vent groove is disposed at the intersection between the vertical surface of the internal radiating body and the internal radiating body, a cover plate vent groove corresponding to the LED display surface vent groove is disposed on the cover plate, hollow cavities are formed between the external radiating cup and the internal radiating body, and a hollow cavity is formed between the lamp interface and power supply box and the internal radiating body.
 
16. The combined three-dimensional radiating structure for Par38 LED bulb lamp according to claim 15, characterized in that, the external radiating cup is provided with a cup body inside radiating surface and a cup body outside radiating surface, and the internal radiating body is provided with discontinuous multilayer three-dimensional radiating fins to form a radiating surface.
 




Drawing































Search report
















Cited references

REFERENCES CITED IN THE DESCRIPTION



This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

Patent documents cited in the description