A LINEAR LIGHT SOURCE STRIP LIGHT

(19)

(11)

EP 4 206 519 A1

(12)	EUROPEAN PATENT APPLICATION

(43)	Date of publication:
	05.07.2023 Bulletin 2023/27

(21)	Application number: 22214153.3

(22)	Date of filing: 16.12.2022

(51)

International Patent Classification (IPC):

F21S 4/28^(2016.01)
F21V 5/04^(2006.01)
F21V 3/04^(2018.01)
F21Y 103/10^(2016.01)

F21V 5/00^(2018.01)
F21V 7/00^(2006.01)
F21V 13/02^(2006.01)
F21Y 115/10^(2016.01)

(52)	Cooperative Patent Classification (CPC):
	F21S 4/28; F21V 5/045; F21V 7/0091; F21V 5/004; F21V 5/043; F21V 3/049; F21Y 2103/10; F21Y 2115/10; F21V 13/02; F21V 5/008

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
	Designated Extension States:
	BA
	Designated Validation States:
	KH MA MD TN

(30)

Priority:

31.12.2021 CN 202111678745

(71)	Applicants:
	Self Electronics Co., Ltd. Ningbo City, Zhejiang 315103 (CN) SELF ELECTRONICS Germany GmbH 51149 Köln (DE) Lin, Wanjiong Ningbo City, Zhejiang 315103 (CN)

(72)	Inventors:
	Zeng, Guoqing Ningbo, 315103 (CN) Liu, Xiaoyun Ningbo, 315103 (CN) He, Zuping Ningbo, 315103 (CN) Xu, Kai Ningbo, 315103 (CN) Zhang, Chengke Ningbo, 315103 (CN)

(74)	Representative: 2K Patentanwälte Blasberg Kewitz & Reichel
	Partnerschaft mbB Schumannstrasse 27 60325 Frankfurt am Main 60325 Frankfurt am Main (DE)

(54)	A LINEAR LIGHT SOURCE STRIP LIGHT

(57) This embodiment discloses a linear light source strip lamp, comprising: a strip-shaped light frame; a strip circuit board arranged on the strip-shaped light frame, and light-emitting chips arranged at intervals along the length direction on the front; a strip lens , arranged in the light-emitting direction of the light-emitting chip, the strip lens includes a light-entry area, a light-emitting area, and a total reflection area, and the light-emitting area is provided with a first convex lens array arranged along the length direction, the first convex lens array stretches the light-emitting chips along the length direction so that adjacent light-emitting chips are connected to each other to form a linear light source effect; the strip-shaped lampshade is arranged on the strip-shaped lamp holder and is located outside the strip-shaped lens; the strip-shaped lampshade A shaped lampshade is provided with said light diffusion area at least partially covering said total reflection area.

Description

Technical field

[0001] The invention relates to the field of lighting devices, in particular to a linear light source strip light.

Background technique

[0002] In the context of energy saving and environmental protection, LED lamps are more and more used in the fields of home and commercial lighting because of their high light extraction efficiency and good light-gathering performance.

[0003] At present, LED lamps on the market mainly use point light sources for lighting. This type of lighting has the problems of glare and reflection glare. The light from the LED is diffused, but because the diffusion direction is not single, the image of the linear light source is messy and blurred. The linear light source is dim and messy, and finally the light projected onto the irradiated surface is uneven, resulting in poor lighting effect.

[0004] At the same time, the existing improved linear light source lamps either have a large volume, or use more LED lamp particles in order to achieve the effect of linear light source, which increases the production cost.

Overview of the invention

[0005] In view of this, the present invention provides a linear light source strip lamp to solve the above technical problems.

[0006] A linear light source strip lamp, comprising:

strip-shaped light frame;

A strip-shaped circuit board is arranged on the strip-shaped light frame, and the front is provided with light-emitting chips arranged at intervals along the length direction;

A strip lens, arranged in the light-emitting direction of the light-emitting chips, the strip lens includes a light entrance area, a light-emitting area, and a total reflection area, and a first convex lens array arranged along the length direction is arranged on the light-emitting area, the first convex lens array presents an image of stretching the light-emitting chips along the length direction so that adjacent light-emitting chips are connected to each other to form a linear light source effect;

a strip lampshade, arranged on the strip-shaped light frame and located outside the strip lens;

The light strip is provided with a light diffusion area at least partially covering the total reflection area.

[0007] Preferably, the first convex lens array deflects the emitted light of the light-emitting chip to both ends along the length direction so that the light-emitting areas of adjacent light-emitting chips are connected or covered to form a linear light source effect.

[0008] Preferably, the light diffusion area is a second convex lens array, and the second convex lens array presents an image of stretching the light-emitting chips along the length direction so that adjacent light-emitting chips are connected to each other to form a linear light source effect.

[0009] Preferably, the second convex lens array deflects the emitted light of the light-emitting chips to both ends along the length direction so that the light-emitting areas of adjacent light-emitting chips are connected or covered to form a linear light source effect.

[0010] Preferably, the light diffusion region is provided with a diffusing means.

[0011] Preferably, the total reflection area includes a first total reflection surface and a second total reflection surface arranged in the middle of the strip lens, and the first total reflection surface and the second total reflection surface are connected to each other inclined outwardly in a direction away from said light emitting chip; the light diffusion area includes a first light diffusion surface correspondingly covering the first total reflection surface and the second total reflection surface.

[0012] Preferably, the light-emitting area includes a first light-emitting surface and a second light-emitting surface disposed on both sides of the first total reflection surface and the second total reflection surface.

[0013] Preferably, the total reflection area further includes a third total reflection surface and a fourth total reflection surface arranged on both sides of the first light-emitting surface and the second light-emitting surface;

[0014] The light-emitting area also includes a third light-emitting surface and a fourth light-emitting surface, the third light-emitting surface is arranged between the third total reflection surface and the first light-emitting surface, and the fourth light-emitting surface is arranged on the fourth total reflection surface and the second light-emitting surface.

[0015] Preferably, the light diffusion area includes a second light diffusion surface and a third light diffusion surface correspondingly covering the third total reflection surface and the fourth total reflection surface.

Technical effect of the present invention:

[0016] The linear light source strip light of the present invention is arranged on the light-emitting surface, and the lens can be directly molded during injection molding without increasing the cost, and the precision of the mold is high, and the light control is more precise. Due to injection molding and other reasons, there will be slight light leakage on the lens. Therefore, in order to solve the problems of light leakage and uniformity of sweeping light, a diffusion layer is set at a specific part of the lampshade. The main light-emitting surface of the lamp is a transparent layer, which solves the problem of light leakage also solves the problem of uniformity of light scanning.

Description of drawings

[0017] invention are described below in conjunction with the accompanying figures, wherein:

FIGURE 1 is a schematic structural diagram of the linear light source strip light of this embodiment;

FIGURE 2 is a schematic cross-sectional view of the linear light source strip light of this embodiment;

FIGURE 3 is a schematic diagram of a partially exploded structure of the linear light source strip light of this embodiment;

FIGURE 4 is a schematic cross-sectional view of another embodiment of a linear light source strip light.

Detailed Description of the Embodiments

[0018] Specific embodiments of the present invention will be described in further detail below based on the accompanying drawings. It should be understood that the description of the embodiments of the present invention here is not intended to limit the protection scope of the present invention.

[0019] As shown in FIGS. 1-3 , the linear light source strip light of this embodiment includes: a strip-shaped light frame 100 , a strip circuit board 200 , a strip lens 400 and a strip lampshade 600. The strip-shaped circuit board 200 is arranged on the strip-shaped light frame 100, and the front is provided with light-emitting chips 300 arranged at intervals along the length direction. The light-emitting chips 300 are commonly used LED chips. The above is a common structure in the prior art and will not be described in detail.

[0020] The strip lens 400 in this embodiment is arranged in the light-emitting direction of the light-emitting chip 300. The strip lens 400 generally refers to a lens formed by extending a single-shaped cross-section in the longitudinal direction, and the shape of the cross-section can be set as required. The lens must have a light entrance/input area and a light-emitting/exit area. Sometimes in order to achieve light distribution, a total reflection surface is also provided. In this embodiment, the strip lens 400 includes a light entrance area 403, a light-emitting area 401 and a total reflection area 402, the light-emitting chip 300 can be seen from/on the light-emitting area 401. In order not to present the effect of a point light source, the light-emitting area 401 of this embodiment is provided with a first convex lens array 500 arranged along the length direction, and the first convex lens array 500 presents an image in which the light-emitting chips 300 are stretched along the length direction to connect adjacent light-emitting chips 300 to form a linear light source effect; the density of the first convex lens array 500 and the shape of the convex lenses can be adjusted according to the imaging effect, and the final effect is to form a linear light source. The strip lampshade 600 is disposed on the strip-shaped light frame 100 outside the strip lens 400. The strip lampshade 600 is a common component and can protect the internal structure of the lamp. When the total reflection area 402 of the strip lens 400 is used for light distribution, there will be some light leakage at this position, so that the light-emitting chip 300 can also be seen, and the total reflection area does not have the function of emitting light, and the image presented by the light emitting chip 300 on its surface cannot be changed by setting a pattern. In order to solve this problem, the lampshade 600 of this embodiment is provided with the light diffusion area 601 at least partially covering the total reflection area 402 .

[0021] The first convex lens array 500 deflects the emitted light of the light-emitting chips 300 to both ends along the length direction so that the light-emitting regions of adjacent light-emitting chips 300 are connected or covered to form a linear light source effect.

[0022] The purpose of setting the light diffusion area 601 is to diffuse light in/to the total reflection area 402 that does not require light output, so that no point light source can be seen, because light distribution is not required. In this embodiment, the light diffusion area 601 is provided with diffusing means, the strip-shaped lampshade 600 may be manufactured by a two-color extrusion process. The amount of diffusing means can be adjusted as needed.

[0023] In another embodiment, the light diffusion area 601 is a second convex lens array, and the second convex lens array shows the effect of stretching the light-emitting chips 300 along the length direction so that adjacent light-emitting chips 300 are connected to each other to form a linear light source image, which may be more expensive to manufacture.

[0024] The emitted light of the light-emitting chips 300 to both ends along the length direction, so that the light-emitting regions of adjacent light-emitting chips 300 are connected or covered to form a linear light source effect.

[0025] This embodiment provides a strip lens 400 with a specific shape, the total reflection area 402 includes a first total reflection surface 4021 and a second total reflection surface 4022 arranged in the middle of the strip lens 400, the first total reflection surface 4021 and the second total reflection surface 4022 are connected to each other and are inclined outward along the direction away from the light-emitting chip 300;said light diffusion area 601 comprising a first light diffusion surface 6011 corresponding to covering said first total reflection surface 4021 and said second total reflection surface 4022. The first total reflection surface 4021 and said second total reflection surface 4022 are used to fully reflect light from the middle area of light emitting from the light emitting chip 300 to both sides.

[0026] In this embodiment, the light-emitting area 401 includes a first light-emitting surface 4011 and a second light-emitting surface 4012 disposed on both sides of the first total reflection surface 4021 and the second total reflection surface 4022.

[0027] In this embodiment, the total reflection area 402 further includes a third total reflection surface 4023 and a fourth total reflection surface 4024 arranged on both sides of the first light-emitting surface 4011 and the second light-emitting surface 4012; the third total reflection surface 4023 and the fourth total reflection surface 4024 are used to totally reflect the light from the two side regions of the light-emitting chip 300 toward the middle.

[0028] The light-emitting area 401 also includes a third light-emitting surface 4013 and a fourth light-emitting surface 4014, the third light-emitting surface 4013 is arranged between the third total reflection surface 4023 and the first light-emitting surface 4011, and the fourth light-emitting surface 4014 is arranged between the fourth total reflection surface 4024 and the second light-emitting surface 4012.

[0029] As shown in FIG. 4 , in another embodiment, the light diffusion area 601 includes a second light diffusion surface 6012 and a third light diffusion surface 6013 that cover the third total reflection surface 4023 and the fourth total reflection surface 4024 correspondingly.

[0030] In another embodiment, both the strip-shaped circuit board 200 and the strip-shaped lens 400 are installed in the strip-shaped lampshade 600.

[0031] The above are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement or improvement within the spirit of the present invention is covered by the claims of the present invention.

Claims

1. A linear light source strip light, comprising:

Strip-shaped light frame (100);

A strip-shaped circuit board (200), arranged on the strip-shaped light frame (100), with light-emitting chips (300) arranged at intervals along the length direction on the front;

characterized in that a strip lens (400) is arranged in the light-emitting direction of the light-emitting chip (300), and the strip lens (400) includes a light entrance area (403),

a light-emitting area (401) and a total reflection area (402), the light-emitting area (401) is provided with a first convex lens array (500) arranged along the length direction, and , said first convex lens array (500 ) presenting an image of stretching the light of the light-emitting chips (300) along the lengthwise direction so that the light of the adjacent light-emitting chips (300) are interconnected to form a linear light source effect;

a strip lampshade (600), arranged on the strip-shaped light frame (100) outside the strip lens (400);

the strip lampshade (600) is provided with a light diffusion area (601) at least partially covering the total reflection area (402).

2. The linear light source strip light according to claim 1, characterized in that said first convex lens array (500) causes the light emitted from the light-emitting chip (300) to be deflected towards the ends along the length direction so that the light-emitting areas of adjacent light-emitting chips (300) are interconnected or covered to form a linear light source effect.

3. The linear light source strip light according to claim 1 or 2,
characterized in that said light diffusion area (601) is a second convex lens array, said second convex lens array presenting an image of stretching the light-emitting chips (300) along the length direction so that adjacent light-emitting chips (300) are interconnected to form a linear light source effect.

4. The linear light source strip light according to claim 3, characterized in that, the second convex lens array deflects the output light of the light-emitting chips (300) to both ends along the length direction so that light of the adjacent light-emitting chips (300) of the light-emitting areas are connected or covered to form a linear light source effect.

5. The linear light source strip light according to any of the claims 1 to 4, characterized in that, the light diffusion region (601) is provided with diffusing means.

6. The linear light source strip light according to any one of claims 1-5, characterized in that, the total reflection area (402) includes a first total reflection surface (4021) and a second total reflection surface ( 4022 ) arranged in the middle of the strip lens (400), the first total reflection surface ( 4021 ) and the second total reflection surface (4022) are connected to each other and are inclined outward along a direction away from the light-emitting chip (300); the light diffusion area (601) includes a first light diffusion surface (6011) correspondingly covering the first total reflection surface (4021) and the second total reflection surface (4022).

7. The linear light source strip light according to claim 6, characterized in that, in that said light-emitting area (401) comprises a first light-emitting surface (4011) and a second light-emitting surface (4012) provided on both sides of said first total reflective surface (4021) and said second total reflective surface (4022).

8. The linear light source strip light according to claim 7, characterized in that, the total reflection area (402) further includes a third total reflection surface (4023) and a fourth total reflection surface (4024) provided on either side of said first light-emitting surface (4011) and said second light-emitting surface (4012);
the light-emitting area (401) also includes a third light-emitting surface (4013) and a fourth light-emitting surface (4014), and the third light-emitting surface (4013) is arranged on the third total reflection surface (4023) and the first light-emitting surface ( 4011), the fourth light-emitting surface (4014) is arranged between the fourth total reflection surface (4024) and the second light-emitting surface (4012).

9. The linear light source strip light according to claim 8, characterized in that said light diffusion area (601) comprises a second light diffusion surface (6012) and a third light diffusion surface (6013) corresponding to covering said third total reflective surface (4023) and said fourth total reflective surface (4024).

Drawing

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