CN200979110Y

CN200979110Y - Surface light source device

Info

Publication number: CN200979110Y
Application number: CNU2006201544634U
Authority: CN
Inventors: 樊邦弘
Original assignee: Heshan Lide Electronic Enterprise Co Ltd
Current assignee: Heshan Lide Electronic Enterprise Co Ltd
Priority date: 2006-12-05
Filing date: 2006-12-05
Publication date: 2007-11-21
Anticipated expiration: 2016-12-05

Abstract

The utility model discloses a face light source device, characterized in that the face light source device comprises a point light source and a light conductive plate with an outlet face and at least one inlet face, wherein the outlet face of the light conductive plate is equipped with a diffuse layer, a plane adjacent with the inlet face but not the outlet face is equipped with a reflecting layer, the light point source is arrayed on the edging of the inlet face on the light conductive plate, lights emitted by the point source goes into the light conductive plate from the inlet face, after being refracted by the light conductive plate and reflected by the reflecting layer, is scattered from the diffuse layer on the inlet face. The inlet face is an adjacent plane with the outlet face, or the inlet face is an opposite plate with the outlet face. The utility model adopts the light source as an illuminating source, makes the light source to a face light source after refraction or reflection, which makes the light continuous and uniform and has soft ocular effect, furthermore the manufacturing craft of the utility model is simple, and the cost is relatively quite low.

Description

A kind of planar light source device

Technical field

The utility model belongs to the lighting decoration controlled field, refers to a kind of planar light source device.

Background technology

Existing illumination and decoration light fixture adopts spot light mostly, and such as miniature bulb, LED or the like, when these spot lights were used for illumination and decoration, light was discontinuous, and is inhomogeneous, and illumination or decorative effect are too poor.Therefore need a kind of light continuously, evenly, and the device that cost relatively can be very not high substitute existing spot light bulb.

Summary of the invention

In order to address the above problem, the utility model provides a kind of light continuously, evenly, and the relative very low planar light source device of cost.

The technical scheme in the invention for solving the above technical problem is, a kind of planar light source device, it is characterized in that this planar light source device comprises spot light, has the LGP of an exit facet and at least one plane of incidence, have diffusion layer on the exit facet of LGP, have the reflecting layer on the plane of and non-exit facet adjacent with the plane of incidence, spot light is arranged in the edge of this LGP plane of incidence; The light that spot light sends is to enter LGP by the plane of incidence, pass through the reflection in the refraction of LGP and reflecting layer again after, scatter by the diffusion layer on the exit facet.The described plane of incidence is the adjacent planar with exit facet, or the described plane of incidence be for the relative plane of exit facet.

The beneficial effects of the utility model are, its adopts spot light as light emitting source, after refraction or reflection, make spot light become area source, light is become continuously evenly, and visual effect are soft, and its manufacture craft is simple in addition, and cost is relative also very low.

Description of drawings

Fig. 1 is a LGP schematic diagram of the present utility model;

Fig. 2 is first embodiment schematic diagram of the present utility model;

Fig. 3 is second embodiment schematic diagram of the present utility model.

The specific embodiment

Come the utility model is elaborated with two embodiment below.

As Fig. 2 is first embodiment of the present utility model, it is side light-emitting area light source, LGP 2 has six faces, the plane, top is an exit facet 22, have diffusion layer 3, four adjacent sides of exit facet 22 are the plane of incidence 21, spot light 1 is arranged in LGP 2 edges, press close to the plane of incidence 21 on four sides, the one side relative with exit facet 22 is on the bottom surface, has reflecting layer 4, after the light that spot light 1 sends enters LGP 2 by the plane of incidence 21, again through scattering by the diffusion layer on the exit facet 22 3 after the refraction of LGP 2, perhaps pass through after the refraction of LGP 2 again in the 4 reflected back LGPs 2 of reflecting layer, scatter by the diffusion layer on the exit facet 22 3 at last.

As Fig. 3 is second embodiment of the present utility model, promptly carry on the back the light-emitting area light source, the plane, top of LGP 2 is an exit facet 2, have diffusion layer 3 above, have reflecting layer 4 on four planes adjacent with exit facet 22, the one side relative with exit facet 22 is that the bottom surface is the plane of incidence 21, and the plane of incidence 21 is pressed close to by the edge that spot light is arranged in LGP 2.After the light that spot light 1 sends enters LGP 2 by the plane of incidence 21, with first embodiment in the same manner, scatter by the diffusion layer on the exit facet 22 3 through after the refraction of LGP 2 again, perhaps pass through after the refraction of LGP 2 again in the 4 reflected back LGPs 2 of reflecting layer, scatter by the diffusion layer on the exit facet 22 3 at last.

Claims

1, a kind of planar light source device, it is characterized in that this planar light source device comprises spot light, has the LGP of an exit facet and at least one plane of incidence, have diffusion layer on the exit facet of LGP, have the reflecting layer on the plane of and non-exit facet adjacent with the plane of incidence, spot light is arranged in the edge of this LGP plane of incidence; The light that spot light sends is to enter LGP by the plane of incidence, pass through the reflection in the refraction of LGP and reflecting layer again after, scatter by the diffusion layer on the exit facet.

2, planar light source device according to claim 1 is characterized in that: the described plane of incidence is and the exit facet adjacent planar.

3, planar light source device according to claim 1 is characterized in that: the described plane of incidence is the plane relative with exit facet.