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(11) | EP 2 846 073 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
| published in accordance with Art. 153(4) EPC |
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| (54) | ULTRATHIN PROJECTING LAMP |
| (57) The present patent application discloses a slim spotlight including a surface cover,
a glass plate, a rubber ring, a reflector cover, a light expansion hood, a waterproof
ring, a bolt, a seal ring, a nut, a mounting bracket and a body. A LED circuit without
power supply is set between the light expansion hood and the body. The rear side of
the body has a plurality of screw holes and the screw holes pass through the body.
The cover is provided with a plurality of hidden holes which match up with the screw
holes. The output port of the LED circuit comprises a rectifier bridge, a safety capacitor,
a piezoresistor and a filter capacitor. The safety capacitor is connected in series
between a firing line and a null line; the piezoresistor is connected in series between
the firing line and the null line; the input port of the rectifier bridge connects
with the firing line and the null line; the output port of the rectifier bridge connects
the positive lead of the filtering capacitor; the input port of the LED circuit connects
a number of high-voltage LED lamp beads in series. The slim spotlight adopts a plurality
of screw holes on the back of the body to mount the surface cover which offers a large
light emitting area and ensures a slim outer housing. The electrical circuit of the
slim spotlight uses the high-voltage LED lamp beads and eliminates the power supply
which makes the slim spotlight thinner and lighter. |
Field of the Patent Application
[0001] This patent application relates to the technical field of the spotlight, and particularly relate to a slim spotlight.
Background
[0002] The mounting method of the front cover and the body of the spotlight in the market usually uses the screw to pass through front cover and into the body. This design increases the thickness of the entire spotlight, and affects the beauty of the spotlight. The LED lamp beads of the existing spotlight require the regulator or constant current power supply, which also increases the thickness of the entire spotlight. To eliminate the power supply and make the product thinner will definitely satisfy the customer.
Summary
[0003] The object of the present patent application is to overcome the above deficiencies and provide a slim spotlight.
[0004] The present patent application provides a slim spotlight, including a surface cover, a glass plate, a rubber ring, a reflector cover, a light expansion hood, a waterproof ring, a bolt, a seal ring, a nut, a mounting bracket and a body. A LED circuit without power supply is set between the light expansion hood and the body, the rear side of the body has a plurality of screw holes, the screw holes pass through the body, the surface cover is provided with a plurality of hidden holes which match up with the screw holes. The output of the LED circuit includes a rectifier bridge, a safety capacitor, a piezoresistor and a filter capacitor, the safety capacitor is connected in series between a firing line and a null line; the piezoresistor is connected in series between the firing line and the null line; the input port of the rectifier bridge connects with the firing line and the null line; the output port of the rectifier bridge connects the positive lead of the filtering capacitor; the input port of the LED circuit connects a number of high-voltage LED lamp beads in series. In one aspect of the present patent application, a fuse is connected in series between the firing line and the safety capacitor, wherein the fuse is a self-resettable fuse.
[0005] In another aspect of the present patent application, the rectifier bridge is a surface mount device.
[0006] In another aspect of the present patent application, the filter capacitor connects in parallel with a current-limiting resistor.
[0007] In another aspect of the present patent application, the negative lead of the high-voltage LED lamp bead connects in series with a diode.
[0008] In yet another aspect of the present patent application, the diode is a SMT packaged constant current diode.
[0009] The slim spotlight of the patent application has the following advantages: the slim spotlight adopts a plurality of screw holes on the back of the body to mount the surface cover. This assembly method offers a large light emitting area, and ensures a slim outer housing. The electrical circuit of the slim spotlight uses the high-voltage LED lamp beads and eliminates the power supply, which makes the slim spotlight thinner and lighter.
Brief Descriptions of the Drawings
[0010]
Figure 1 is an exploded view of a slim spotlight according to one embodiment of the present patent application.
Figure 2 is a rear view of the body of the slim spotlight of the present patent application.
Figure 3 is a rear view of the surface cover of the slim spotlight of the present patent application.
Figure 4 is the circuit diagram of the output port of the LED of the present patent application.
Figure 5 is the circuit diagram of the intput port of the LED of the present patent application.
Detailed Description
[0011] Reference will now be made in detail to a preferred embodiment of the slim spotlight disclosed in the present patent application, examples of which are also provided in the following description. Exemplary embodiments of the slim spotlight disclosed in the present patent application are described in detail, although it will be apparent to those skilled in the relevant art that some features that are not particularly important to an understanding of the slim spotlight may not be shown for the sake of clarity. The following examples are used to illustrate the present patent application but not intended to limit the scope of the present patent application.
[0012] Referring to Figures 1-5, a slim spotlight includes a surface cover 1, a glass plate 2, a rubber ring 3, a reflector cover 4, a light expansion hood 5, a waterproof ring 6, a bolt 7, a seal ring 8, a nut 9, a mounting bracket 10 and a body 11. A LED circuit 14 without power supply is set between the light expansion hood 5 and the body 11. The rear side of body 12 has a plurality of screw holes 12. The screw holes 12 pass through the body 11. The surface cover 1 is provided with a plurality of hidden holes 13 which match up with the screw holes 12.
[0013] The output port of the LED circuit 14 includes a rectifier bridge U1, a safety capacitor X1, a piezoresistor V1 and a filter capacitor C1, the safety capacitor X1 is connected in series between the firing line L and the null line N. The piezoresistor V1 is connected in series between the firing line L and the null line N. The input port of the rectifier bridge U1 connects with the firing line L and the null line N. The output port of the rectifier bridge U1 connects the positive lead of the filtering Capacitor C1. The input port of the LED circuit 14 connects a number of high-voltage LED lamp beads D1 ∼ D8 in series. In this embodiment, the null line N connects in series with a resistor R3 with small resistance value.
[0014] A fuse F1 is connected in series between the firing line L and the safety capacitor X1. The fuse F1 is a self-resettable fuse.
[0019] The slim spotlight adopts a plurality of screw holes on the back of the body to mount the cover, which offers a large lightemitting area and ensures a slim outer housing. The maximum thickness of the entire slim spotlight is only 25mm, which is slimmer than the existing similar products. The electrical circuit of the slim spotlight uses the high-voltage LED lamp beads, which eliminates the power supply and makes the slim spotlight thinner and lighter.
[0020] The above are only preferred embodiments of the present patent application, it should be understood that the slim spotlight disclosed in the present patent application is not limited to the precise embodiments described above and that various changes and modifications thereof may be effected by one skilled in the art without departing from the spirit or scope of the protection. For example, elements and/or features of different illustrative embodiments may be combined with each other and/or substituted for each other within the scope of this disclosure.
1. A slim spotlight comprising a surface cover, a glass plate, a rubber ring, a reflector
cover, a light expansion hood, a waterproof ring, a bolt, a seal ring, a nut, a mounting
bracket and a body, characterizing in that a LED circuit without power supply is set between the light expansion hood and the
body, a rear side of the body has a plurality of screw holes, the screw holes pass
through the body, the surface cover is provided with a plurality of hidden holes which
match up with the screw holes; the output port of the LED circuit comprises a rectifier
bridge, a safety capacitor, a piezoresistor and a filter capacitor, the safety capacitor
is connected in series between a firing line and a null line; the piezoresistor is
connected in series between the firing line and the null line; an input port of the
rectifier bridge connects with the firing line and the null line; an output of the
rectifier bridge connects a positive lead of the filtering capacitor; an input port
of the LED circuit connects a number of high-voltage LED lamp beads in series.
2. The slim spotlight of claim 1, characterizing in that a fuse is connected in series between the firing line and the safety capacitor, wherein
the fuse is a self-resettable fuse.
3. The slim spotlight of claim 1, characterizing in that the rectifier bridge is a surface mount device.
4. The slim spotlight of claim 1, characterizing in that the filter capacitor connects in parallel with a current-limiting resistor.
5. The slim spotlight of any one of claims 1-4, characterizing in that a negative lead of the high-voltage LED lamp bead connects in series with a diode.
6. The slim spotlight of claim 5, characterizing in that the diode is a SMT constant current diode.