CN212005324U - Planar shadowless light source - Google Patents

Abstract

The utility model discloses a planar shadowless light source, which comprises a cover plate, a side plate, a light guide plate and four optical light-emitting components, wherein the four optical light-emitting components are arranged around the light guide plate, each optical light-emitting component comprises a light source plate and a light guide column, the light source plate is provided with a LED, the LED is positioned at the end part of the light guide column so as to transmit light to the light guide column, the light guide column is positioned at one side of the light guide plate, and the central axis of the light guide column is arranged in parallel with the side surface of the light guide plate; the cover plate is located on the upper side of the light guide plate, the number of the side plates is four, and the side plates are located on one side of the light guide plate to fix the light guide columns and the light source plates with the light guide plate. Which reduces the occurrence of dark areas in the center of the light source and improves brightness.

Description

Planar shadowless light source

Technical Field

The utility model relates to a light source technical field, concretely relates to plane shadowless light source.

Background

At present, the design center of a mainstream light source in the market has a dark area, the brightness is darker relative to four sides, the larger the light source size is, the larger the dark area in the center is, and the lower the brightness is. And the design of the mainstream light source in the market is influenced by the dark area in the center, the overall dimension of the customized light source is also influenced, the dimension can not be freely customized, the structural design is relatively simple, and the light leakage phenomenon is easy to occur after the customized light source is assembled with the LED module.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a plane shadowless light source, its dark space that reduces the light source center takes place, improves luminance.

In order to solve the technical problem, the utility model provides a planar shadowless light source, which comprises a cover plate, a side plate, a light guide plate and four optical light-emitting components, wherein the four optical light-emitting components are arranged around the light guide plate, each optical light-emitting component comprises a light source plate and a light guide column, the light source plate is provided with a LED, the LED is positioned at the end part of the light guide column to transmit light into the light guide column, the light guide column is positioned at one side of the light guide plate, and the central axis of the light guide column is arranged in parallel with the side surface of the light guide plate; the cover plate is located on the upper side of the light guide plate, the number of the side plates is four, and the side plates are located on one side of the light guide plate to fix the light guide columns and the light source plates with the light guide plate.

Preferably, the light guide plate further comprises a switching assembly, the switching assembly comprises four switching pieces, the four switching pieces are located at the right-angle end portion of the light guide plate, the switching pieces are arranged on two sides of each side plate, and the switching pieces and the side plates are fixed through first locking pieces.

Preferably, the first locking member is a screw.

Preferably, the two sides of the side plate are provided with yielding grooves, the adapter is provided with a limiting end, and the limiting end is clamped in the yielding grooves.

Preferably, at least one of the adapters is provided with a clamping groove, and the wire of the planar shadowless light source is clamped in the clamping groove.

Preferably, the clamping groove is a U-shaped groove.

Preferably, a protective plate is further arranged between the light guide plate and the cover plate, and both sides of the protective plate are plated with optical antireflection films.

Preferably, the side plate is provided with a profile groove in a penetrating manner, and the light guide column is arranged in the profile groove in a penetrating manner.

Preferably, the cover plate is provided with a mounting hole, and the cover plate is fixed with the side plate through a second locking piece.

Preferably, a diffuse reflection silk-screen layer is arranged on one surface, facing the cover plate, of the light guide plate, and an optical antireflection film is arranged on one surface, facing away from the cover plate, of the light guide plate.

The utility model has the advantages that:

1. the utility model discloses be provided with the combination scheme of light source board, leaded light post and light guide plate, improve the luminance of light source and the collimation degree of light wave, reduce the production of the light source luminous region center dark space, improve the luminance at luminous region center.

2. The utility model discloses be provided with four curb plates, the curb plate can open the section bar, increases the fixed mode of leaded light post and light source board, reduces the difficulty of machining and product equipment, also avoids the possibility of light leak simultaneously.

3. The utility model discloses convenient luminous effectual, the light leak phenomenon is difficult for appearing.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a partially enlarged view of fig. 1 in a region a.

The reference numbers in the figures illustrate: 10. a light guide plate; 20. a light source plate; 21. a side plate; 211. a yielding groove; 22. a light guide pillar; 30. an adapter; 31. a limiting end; 32. a U-shaped groove; 40. a cover plate; 41. a protection plate; 50. and (3) wire rods.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

Referring to fig. 1-2, the present invention discloses a flat shadowless light source, which comprises a cover plate 40, a side plate 21, a light guide plate 10 and four optical light emitting components. Four optics light emitting component encircle light guide plate 10 and set up, optics light emitting component include light source board 20 and leaded light post 22, are provided with LED on the light source board 20, and LED is located leaded light post 22's tip in order to transmit light to leaded light post 22, and leaded light post 22 is located light guide plate 10 one side and the axis of leaded light post 22 and the side parallel arrangement of light guide plate 10. The LED emits a light beam with a specific beam angle, the light beam is converted into parallel light by the light guide 22, and the parallel light enters the light guide plate 10, so that the brightness of the light source and the collimation of the light wave can be improved, the generation of a dark area in the center of the light emitting area of the light source is reduced, and the brightness in the center of the light emitting area is improved.

The cover plate 40 is located on the upper side of the light guide plate 10, the side plates 21 are four, and the side plates 21 are located on one side of the light guide plate 10 to fix the light guide posts 22 and the light source plate 20 to the light guide plate 10. The side plate 21 can be shaped by opening a section bar, so that the fixing modes of the light guide column 22 and the light source plate 20 are increased, the difficulty of machining and product assembly is reduced, and the possibility of light leakage is avoided.

The utility model discloses still include the adapter assembly, the adapter assembly includes four adapters 30, and four adapters 30 are located light guide plate 10's right angle end, and every curb plate 21's both sides all are provided with adapter 30, and adapter 30 is fixed through first locking piece with curb plate 21 within a definite time. Adaptor 30 can be general, and curb plate 21 length can be selected according to the overall dimension, for quick maintenance, change damage module or function module change provide high-efficient, accurate operation, and then realize the free customization of light source size of a dimension.

The first locking member is a screw. The both sides of curb plate 21 are provided with the groove of stepping down 211, are provided with spacing end 31 on the adaptor 30, and spacing end 31 card is established in the groove of stepping down 211. Thus, the side plate 21 is more closely fitted to the stopper end 31.

The utility model discloses in, seted up the draw-in groove on at least one adaptor 30, the wire rod 50 card of plane shadowless light source is established in the draw-in groove. The light source wire with the buckle is adopted, the buckle on the light source wire is arranged in the clamping groove, and the light source wire is fixed after the cover plate 40 is covered. Compare in traditional light source line, this kind of design mounting means is simple swift, has avoided the possibility that the light source line can be drawn outward or pushed into inwards again simultaneously, and 50 afterbody designs of wire rod have the strengthening rib simultaneously, increase the combination area of moulding plastics between pencil and the plug, make joint strength, fatigue strength improve. The anti-bending service life of the plug and the wire harness is prolonged. The clamping groove is a U-shaped groove 32.

A protective plate 41 is further disposed between the light guide plate 10 and the cover plate 40, and both sides of the protective plate 41 are coated with optical antireflection films. The side plate 21 is provided with a profile groove in a penetrating manner, and the light guide column 22 is arranged in the profile groove in a penetrating manner.

The cover plate 40 is provided with a mounting hole, and the cover plate 40 is fixed to the side plate 21 by a second locking member. The second locking piece is a screw. The light guide plate is provided with the diffuse reflection silk screen printing layer towards the one side of apron, the light guide plate back of the one side of apron is provided with the optics antireflection coating, so, can make the reverberation weaken, the transmitted light increase to further improve luminance.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

Claims (10)

1. A planar shadowless light source is characterized by comprising a cover plate, a side plate, a light guide plate and four optical light-emitting assemblies, wherein the four optical light-emitting assemblies are arranged around the light guide plate and comprise a light source plate and a light guide column, an LED is arranged on the light source plate and is positioned at the end part of the light guide column so as to transmit light rays into the light guide column, the light guide column is positioned at one side of the light guide plate, and the central axis of the light guide column is parallel to the side surface of the light guide plate; the cover plate is located on the upper side of the light guide plate, the number of the side plates is four, and the side plates are located on one side of the light guide plate to fix the light guide columns and the light source plates with the light guide plate.

2. The flat shadowless light source of claim 1 further comprising an adapter assembly, wherein the adapter assembly comprises four adapters, the four adapters are located at right-angled ends of the light guide plate, the adapters are located on both sides of each side plate, and the adapters and the side plates are fixed by a first locking member.

3. The planar shadowless light source of claim 2 wherein said first locking member is a screw.

4. The planar shadowless light source of claim 2 wherein, the side plate is provided with a recess on both sides thereof, the adaptor is provided with a limiting end, and the limiting end is clamped in the recess.

5. The planar shadowless light source of claim 2 wherein at least one of the adapters has a slot therein, and wherein a wire of the planar shadowless light source is engaged in the slot.

6. The planar shadowless light source of claim 5 wherein the slot is a U-shaped slot.

7. The flat shadowless light source of claim 1 wherein a protective plate is disposed between the light guide plate and the cover plate, and both sides of the protective plate are coated with an optical antireflection coating.

8. The planar shadowless light source of claim 1 wherein the side plate has a profile groove formed therethrough, the light guide post being disposed in the profile groove.

9. The planar shadowless light source of claim 1 wherein the cover plate has a mounting hole and the cover plate is secured to the side plate by a second locking member.

10. The planar shadowless light source of claim 9 wherein a diffuse reflection silkscreen layer is disposed on a side of the light guide plate facing the cover plate, and an optical antireflection film is disposed on a side of the light guide plate facing away from the cover plate.

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