CN202040632U

CN202040632U - LED plane light source device

Info

Publication number: CN202040632U
Application number: CN2011200216120U
Authority: CN
Inventors: 杨威
Original assignee: Irico Group Corp
Current assignee: Irico Group Corp
Priority date: 2011-01-21
Filing date: 2011-01-21
Publication date: 2011-11-16
Anticipated expiration: 2021-01-21

Abstract

An LED plane light source device includes a lamp box, wherein an aluminum base plate is arranged on the inner side of the lamp box; a reflecting film is coated with the surface of the aluminum base plate; a plurality of LED illuminating units are arranged on the surface of the aluminum base plate coated with the reflecting film; a light guide plate is arranged below the LED illuminating units; one surface of the light guide plate is patterned; and a plane or a frosted diffuse reflecting transmission plate is arranged below the light guide plate. As light rays are refracted through the patterned light guide plate, the illumination area of the LED point light source is enlarged, the flare effect is reduced, the brightness of the plane light source is more uniform, the illumination on the target area is more uniform and brighter, the directionality is stronger, no flare is caused, and visual comfort is improved; and at the same time, the device can be manufactured into different sizes as required, thereby being convenient for expanding.

Description

A kind of LED planar light source device

Technical field

The utility model relates to a kind of semiconductor illumination device, is specifically related to a kind of LED planar light source device.

Background technology

After electric light source has experienced this three phases of incandescent lamp, fluorescent lamp and high-intensity gas discharge lamp, now progressively enter the LED illumination phase.It is little that a plurality of LED luminescence units are had power consumption with the multiple planar light source that is combined to form, and the life-span is long, advantage such as light efficiency height, good directionality, response speed are fast.Along with the continuous progress of LED manufacturing technology, its light efficiency also will constantly promote, and up to now, the light efficiency of large power white light LED has surpassed 100lm/w.This light efficiency make LED application more and more widely, comprise in widely used backlight field and be about to the general lighting field of large-scale application that wherein the lamp affixed to the ceiling in backlight field and general lighting field can generally be referred to as planar light source.

Though led light source has long service life, advantage that power consumption is little, but it but is a spot light, only emits beam to half space, and the result causes the adverse effect of two aspects: the one, and the position Illumination Distribution that the light that light source sends directly shines is inhomogeneous, middle bright dark all around, be solar effect; The 2nd, light source has strong dazzle, and euphorosia is very poor, even can stimulate people's eyes.So, need on led light source, increase through the secondary optics design even the planar light source device of optical design repeatedly, improving the illuminance uniformity and the brightness uniformity of led light source, and eliminate dazzle, improve euphorosia, make it to be applicable to the application of planar light source.

Summary of the invention

In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of LED planar light source device, and it is little to have power consumption, and the life-span is long, and light efficiency height, good directionality, illumination and brightness are even, free from glare, and the characteristics that improve euphorosia.

To achieve these goals, the technical scheme that the utility model adopted is: a kind of LED planar light source device, comprise lamp box 1, in lamp box 1, survey and be provided with aluminium base 2, post reflective membrane 8 on the surface of aluminium base 2, the one side of posting reflective membrane 8 on aluminium base 2 is provided with at least one LED luminescence unit 3, below LED luminescence unit 3, be provided with LGP 4, LGP 4 is provided with decorative pattern 6 away from the one side of LED luminescence unit 3, and the below of LGP 4 is provided with the diffuse reflection transmittance plate 5 of plane or frosting.

The profile of described LGP 4 is arranged to rectangle, LGP 4 is arranged to the honeycomb shape of integrative-structure away from the one side of LED luminescence unit 3, the honeycomb mouth is arranged to hexagon, the catercorner length a value of relative up and down both sides parallel lines is 0.75～0.8mm in the honeycomb mouth, vertical range b value between the relative up and down both sides is 0.85～0.9mm, in the decorative pattern in 6 the honeycomb mouth hexagon two relative up and down edge lengths be 0.18～0.22mm, honeycomb depth d value is 0.55mm～0.6mm.

Because the technical scheme that the utility model has adopted LGP with decorative pattern that light is reflected, thereby increased the irradiated area of LED spot light, reduced glare effect, make the brightness uniformity of planar LED light source better with all even brightness of illumination that is radiated at target face, high directivity, do not have dazzle, improved euphorosia; Simultaneously, this device can be made into different sizes according to actual needs, convenient expansion.

Description of drawings

Fig. 1 is a whole profile of the present utility model.

Fig. 2 is the vertical view of the utility model LGP; Wherein Fig. 2 (a) is the vertical view of LGP 4; Fig. 2 (b) is each position schematic diagram of LGP 4 decorative patterns.

Fig. 3 is that the A of the utility model LGP 4 decorative patterns is to profile.

Fig. 4 is that the B of the utility model LGP 4 decorative patterns is to profile.

The specific embodiment

Below in conjunction with drawings and Examples structure of the present utility model and operation principle are described further.

Referring to Fig. 1, a kind of LED planar light source device, comprise lamp box 1, in lamp box 1, survey and be provided with aluminium base 2, post reflective membrane 8 on the surface of aluminium base 2, the one side of posting reflective membrane 8 on aluminium base 2 is provided with at least one LED luminescence unit 3, is provided with LGP 4 below LED luminescence unit 3, LGP 4 is provided with decorative pattern 6 away from the one side of LED luminescence unit 3, and the below of LGP 4 is provided with the diffuse reflection transmittance plate 5 of plane or frosting.

Referring to Fig. 2,3,4, the profile of described LGP 4 is arranged to rectangle, LGP 4 is arranged to the honeycomb shape of integrative-structure away from the one side of LED luminescence unit 3, the honeycomb mouth is arranged to hexagon, the catercorner length a value of relative up and down both sides parallel lines is 0.75～0.8mm in the honeycomb mouth, vertical range b value between the relative up and down both sides is 0.85～0.9mm, in the decorative pattern in 6 the honeycomb mouth hexagon two relative up and down edge lengths be 0.18～0.22mm, honeycomb depth d value is 0.55mm～0.6mm.

Operation principle of the present utility model is: after light sends from LED, part light shines directly on the LGP 4, part light reflexes on the LGP 4 through aluminium base 2 surfaces of posting reflective membrane 21, this two parts light belongs to that the LED illuminator directly distributes, be similar to the dazzling light of luminous point, because the utility model is arranged to rough pattern structure with LGP, so, when this part light is refracted during by LGP, diffuse reflection by diffuse reflector again, the light that shines lamp box outside presents evenly, free from glare, soft not dazzling illuminating ray is fit to people's normal lighting and uses very much.

Among the figure: 1 is that lamp box, 2 is that aluminium base, 3 is that luminescence unit, 4 is that LGP, 5 is the diffuse reflection transmittance plate, and 6 is the LGP decorative pattern, and 7 is the LGP outer surface, and 8 is reflective membrane.Among the figure: a value is the catercorner length of both sides parallel lines relative up and down in the honeycomb mouth, and b is the vertical range between the relative up and down both sides, and c is two relative up and down edge lengths.Among the figure: d is the honeycomb degree of depth in the decorative pattern.

Claims

1. LED planar light source device, comprise lamp box (1), it is characterized in that, in lamp box (1), survey and be provided with aluminium base (2), post reflective membrane (21) on the surface of aluminium base (2), the one side of posting reflective membrane (21) on aluminium base (2) is provided with at least one LED luminescence unit (3), be provided with LGP (4) in LED luminescence unit (3) below, LGP (4) is provided with decorative pattern (6) away from the one side of LED luminescence unit (3), is provided with the diffuse reflection transmittance plate (5) of plane or frosting in the below of LGP (4).

2 a kind of LED planar light source devices according to claim 1, it is characterized in that, the profile of described LGP (4) is arranged to rectangle, LGP (4) is arranged to the honeycomb shape of integrative-structure away from the one side of LED luminescence unit (3), the honeycomb mouth is arranged to hexagon, catercorner length (a) value of relative up and down both sides parallel lines is 0.75～0.8mm in the honeycomb mouth, vertical range between the relative up and down both sides (b) value is 0.85～0.9mm, two relative up and down edge lengths are 0.18～0.22mm in the honeycomb mouth hexagon in the decorative pattern (6), and the honeycomb degree of depth (d) value is 0.55mm～0.6mm.