CN204884493U

CN204884493U - Luminous billboard

Info

Publication number: CN204884493U
Application number: CN201520526293.7U
Authority: CN
Inventors: 许演洲
Original assignee: LEDYOUNG TECHNOLOGY Corp
Current assignee: LEDYOUNG TECHNOLOGY Corp
Priority date: 2015-07-20
Filing date: 2015-07-20
Publication date: 2015-12-16
Anticipated expiration: 2025-07-20

Abstract

The utility model provides a luminous billboard, be provided with the illuminator of light guide plate and light guide plate side, the light guide plate surface is provided with sends out the light zone territory, and the light guide plate is provided with a plurality of diffusion points that are used for reflecting the light source in sending out the light zone intra -area, the area total of a plurality of diffusion points is more than or equal to that to send out light zone territory area half the, and it is close to the diffusion point of illuminator side and sets up density and be less than the diffusion point of keeping away from the illuminator side and set up density to send out the light zone intra -area, utilize the diffusion point setting of a light zone intra -area of increase light guide plate, improve the light source reflectivity, and make the diffusion dot density of being close to illuminator be less than the diffusion dot density of keeping away from illuminator, it is comparatively even to make the luminous luminance of sending out the light zone territory.

Description

Luminous billboard

Technical field

A kind of luminous billboard, espespecially utilizes diffusion point set in light guide plate, reduces power consumption, and can the luminous billboard of uniform illuminating.

Background technology

Luminous billboard is used in advertisement plate, road sign, escape instruction etc., now luminous billboard mainly utilize light emitting diode to send light source projects to light guide plate, utilize diffusion point set in light guide plate, light source reflexed to outside light guide plate.

Generally speaking, the diffusion point quantity that light guide plate is arranged is more, more light source can be reflected, reduce the energy consumption of light emitting diode, but the setting of spreading a little more, can cause near light supply apparatus diffusion point reflection comparatively multiple light courcess seem comparatively bright, and just seem comparatively dull away from the diffusion point of light supply apparatus, cause light guide plate luminosity uneven, therefore, in order to make light guide plate luminosity even, current settling mode is the setting reducing diffusion point, and improve the brightness of light emitting diode, allow light guide plate can uniformly light-emitting reach required brightness, but this kind of practice need improve the brightness of light emitting diode, energy consumption is caused to increase.

Therefore, how to solve above-mentioned existing problem and shortcoming, be relevant dealer desire most ardently the problem of research and development.

Summary of the invention

Fundamental purpose of the present utility model is, the diffusion point increased in the light-emitting zone of light guide plate is arranged, improve light source reflectivity, and make the diffusion point density of setting near light-emitting device be less than diffusion point density of setting away from light-emitting device, make the luminosity of light-emitting zone comparatively even.

For reaching above-mentioned purpose, luminous billboard of the present utility model is provided with the light-emitting device of light guide plate and light guide plate side, light guide plate surface is provided with light-emitting zone, and light guide plate is provided with multiple diffusion in order to refract light source point in light-emitting zone, the area summation of multiple diffusion point is more than or equal to light-emitting zone half of the area, and is less than the diffusion point density of setting away from light-emitting device side near the diffusion point density of setting of light-emitting device side in light-emitting zone.

Aforesaid luminous billboard, wherein this diffusion point formed by the light-emitting zone recessed or projection in surface of light guide plate.

Aforesaid luminous billboard, wherein this light-emitting device is set to multiple, and lays respectively at the different side of light guide plate, and light-emitting device is made up of multiple light emitting diode.

Aforesaid luminous billboard, this area respectively spreading point is identical with shape.

Accompanying drawing explanation

Fig. 1 is schematic appearance of the present utility model.

Fig. 2 is the schematic diagram of the utility model diffusion point.

Fig. 3 is the sectional view of the utility model light guide plate.

Fig. 4 is the sectional view of the another embodiment of the utility model light guide plate.

Fig. 5 is the outside drawing of the another embodiment of the utility model light-emitting device.

Description of reference numerals: 1,1 '-light guide plate; 11,11 '-light-emitting zone; 12,12 '-diffusion point; 2-light-emitting device; 21-light emitting diode.

Embodiment

Refer to shown in Fig. 1 to Fig. 3, find out by knowing in figure, the utility model is provided with the light-emitting device 2 of light guide plate 1 and light guide plate 1 side, wherein:

This light guide plate 1 surface is provided with light-emitting zone 11, and light guide plate 1 is provided with multiple diffusion in order to refract light source point 12 in light-emitting zone 11, the area of each diffusion point 12 is identical with shape, and in the present embodiment, diffusion point 12 formed by light-emitting zone 11 surface of light guide plate 1 is recessed; Moreover, the area summation system of the plurality of diffusion point 12 is more than or equal to light-emitting zone 11 half of the area, such as light-emitting zone 11 area is 100cm2, diffusion point 12 areas are 0.03mm2, if diffusion point 12 quantity are 1,700,000, then diffusion point 12 total areas are 51cm2, are namely greater than light-emitting zone 11 half of the area; Again, as shown in Figure 2, put near the diffusion of light-emitting device 2 side the diffusion that 12 density of setting systems are less than away from light-emitting device 2 side in light-emitting zone 11 and put 12 density of settings, in order to diffusion point 12 performance in diagram can be made, therefore diffusion point 12 is amplified expression, and be not used to restriction diffusion point 12 sizes.

This light-emitting device 2 is made up of multiple light emitting diode 21, and the light source that each light emitting diode 21 sends, be projected to light guide plate 1 by light guide plate 1 side.

On mat, because the area summation system of diffusion point 12 of the present utility model is more than or equal to light-emitting zone 11 half of the area, therefore, can the light source that projects of reflect most light emitting diode 21, light-emitting zone 11 is made to send enough brightness, and utilize and put near the diffusion of light-emitting device 2 side the diffusion that 12 density of setting systems are less than away from light-emitting device 2 side in light-emitting zone 11 and put 12 density of settings, allow light-emitting zone 11 have near the side of light-emitting device 2 more multiple light courcess by, and then allow light-emitting zone 11 away from the side of light-emitting device 2, the diffusion point 12 of comparatively dense remaining light source can be reflexed to the external world, make light-emitting zone 11 can produce comparatively uniform light.

Refer to shown in Fig. 4, in the light-emitting zone 11 ' of light guide plate 1 ' of the present utility model, set diffusion point 12 ' also can be formed by the surperficial projection of light-emitting zone 11 '.

Refer to shown in Fig. 5, this light-emitting device 2 can arrange multiple side different in light guide plate 1.

More than illustrate the utility model just illustrative; and it is nonrestrictive; those of ordinary skill in the art understand; when not departing from the spirit and scope that claims limit; many amendments can be made; change, or equivalence, but all will fall in protection domain of the present utility model.

Claims

1. a luminous billboard, is provided with the light-emitting device of light guide plate and light guide plate side, it is characterized in that:

This light guide plate surface is provided with light-emitting zone, and light guide plate is provided with multiple diffusion in order to refract light source point in light-emitting zone, the area summation of multiple diffusion point is more than or equal to light-emitting zone half of the area, and is less than the diffusion point density of setting away from light-emitting device side near the diffusion point density of setting of light-emitting device side in light-emitting zone.

2. luminous billboard as claimed in claim 1, is characterized in that, this diffusion point formed by the light-emitting zone surface of light guide plate is recessed.

3. luminous billboard as claimed in claim 1, is characterized in that, this diffusion point formed by the light-emitting zone surface projection of light guide plate.

4. luminous billboard as claimed in claim 1, is characterized in that, this light-emitting device is made up of multiple light emitting diode.

5. luminous billboard as claimed in claim 1, is characterized in that, this light-emitting device is set to multiple, and lays respectively at the different side of light guide plate.

6. luminous billboard as claimed in claim 1, is characterized in that, this area respectively spreading point is identical with shape.