CN201297578Y

CN201297578Y - Anti-dazzle LED plane light source for reading lamp

Info

Publication number: CN201297578Y
Application number: CNU2008201800536U
Authority: CN
Inventors: 苏家和
Original assignee: Guanghe Mechanical & Electrical Co Ltd
Current assignee: Guanghe Mechanical & Electrical Co Ltd
Priority date: 2008-11-26
Filing date: 2008-11-26
Publication date: 2009-08-26
Anticipated expiration: 2018-11-26

Abstract

The utility model discloses an anti-dazzle LED plane light source for a reading lamp. A light guide plate, at least one LED module and an optical film group are arranged in an outer shell with good heat conduction performance, wherein the optical film group is combined with a first plane of the light guide plate towards an opening of the outer shell, a second plane of the light guide plate towards the inner bottom surface of the outer shell is provided with an optical structure with light collecting function, the inner bottom of the outer shell is provided with a light reflecting material, the LED module is arranged at the side edge of the light guide plate in the outer shell and is used for casting light into the light guide plate, and the light transmits in the light guide plate, and then is refracted by the optical structure with the light collecting function, is reflected by the reflecting material and forms an even and soft anti-dazzle light source of the reading lamp through the optical film group.

Description

Desk lamp anti-dazzle LED plane light source

Technical field

The utility model relates to a kind of planar light source, relates in particular to a kind ofly to be suitable for desk lamp and to have the light source that prevents the light glare effect.

Background technology

Light emitting diode (LED) has power saving, long advantage of life-span, has been the inexorable trend of following lighting source.But the spot light that light emitting diode is a kind of brightness to be concentrated causes direct glare because of too high light source briliancy easily, allows the user not feel well, and when especially being used in the light source as desk lamp, more can cause the puzzlement in the reading.

Moreover, conventional light source also or other led module of the prior art the problem of reflected glare is all arranged, mainly be because desk lamp light source luminescent angle is excessive, produce reverberation and cause the uncomfortable phenomenon of reader through photographed object reflection back.

The utility model content

The purpose of this utility model is to solve when utilizing LED as the light source of desk lamp, has the light-source brightness concentrations, so that produce the problem of reflected glare.

To achieve these goals, the utility model provides a kind of desk lamp anti-dazzle LED plane light source, includes:

One shell is made with the material with thermal conductive property, and this shell is provided with an opening;

One LGP is located in this shell, and this LGP has first plane and second plane that is positioned at relative both sides, and this second plane is provided with possesses the optical texture of getting the light function, and this first plane is then towards the opening of this shell;

One led module is located at least one side of LGP in this shell, in order to ray cast is entered this LGP;

One blooming group is located at the plane of this LGP towards described shell aperture.

Described have an optical texture of getting the light function, is a plurality of miniature prominent grain that is shaped on this LGP second plane.

Described have an optical texture of getting the light function, is a plurality of miniature concave point that is shaped on this LGP second plane.

Described have an optical texture of getting the light function, is a plurality of point-like figures of being located on this LGP second plane.

Described blooming group includes at least one diffuse optical film and at least one blast blooming.

Described shell surface is provided with optical reflectors to the medial surface on this LGP second plane.

The outside of described shell is combined with the heat dissipation characteristics structure one-body moldedly.

The utility model utilizes the leaded light technology, the point-like light that led light source produced is imported LGP, and then form planar light source, makes spot light change softer, more even and whole luminous area source into, uses and reduces the light source briliancy, to avoid direct glare.In addition, the utility model also utilizes optical thin film to be incorporated into this LGP, utilizes the optical characteristics of this film, can reduce the light source luminescent angle effectively, will cause the wide-angle light beam of reflected glare to be transformed into direction, use and avoid reflected glare, and promote the illumination efficiency of light fixture.

Description of drawings

Fig. 1 is that the utility model embodiment midplane light source applications is in the schematic diagram of desk lamp.

Fig. 2 is the three-dimensional exploded view of the combination of components relation of the utility model embodiment midplane light source.

Fig. 3 is the section plan of the structure of the utility model embodiment midplane light source.

Fig. 4 is the partial enlarged drawing of a plurality of miniature prominent grains for the optical texture that is located at LGP among the utility model embodiment.

Fig. 5 is the partial enlarged drawing of a plurality of miniature concave points for the optical texture that is located at LGP among the utility model embodiment.

The specific embodiment

Below cooperation is graphic does more detailed description to embodiment of the present utility model, and those skilled in the art can be implemented after studying this specification carefully according to this.

Fig. 1 is used in the embodiment as the desk lamp light source for showing LED planar light source of the present utility model.

Again as shown in Figures 2 and 3, the preferred embodiment of planar light source of the present utility model includes a shell 1, a LGP 2, at least one led module 3 and at least one blooming group 5; Wherein, described shell 1 is to adopt material with good heat conductive character (for example aluminium etc.) to make, to form an opening 11 at shell 1, the outer surface of shell 1 can the optionally one-body molded structure that possesses heat dissipation characteristics, for example, the structure of this heat dissipation characteristics can be extended a plurality of lamellar bodies to increase area of dissipation in described case surface.

Described LGP 2 is to adopt the made plane plate of optical material with good leaded light character, and this LGP 2 is to be installed in shell 1 inside; Described LGP 2 has first plane and second plane that is positioned at relative both sides, and this second plane is provided with possesses the optical texture 21 of getting the light function, and this first plane is then towards the opening 11 of shell 1; Described possess the optical texture 21 of getting the light function, can be to be shaped in a plurality of miniature prominent 211 (as shown in Figure 4) of grain on second plane of LGP 2 or miniature concave point 212 (as shown in Figure 5) or with a plurality of point-like figure (not shown) of ink printing on LGP 2 second planes.Before in LGP 2 is installed on shell 1, can in the bottom surface of shell 1 inside one reflecting material 4 be set earlier, make that LGP 2 is installed on shell after, second plane that makes LGP is corresponding to this reflecting material 4.

Described led module 3 is located at LGP 2 sides in the shell 1, and it can be located at a side, or at relative dual-side described led module is set all; This led module 3 includes a circuit board, and the LED that is electrically connected at this circuit board, and the lead of being located on the circuit board then can be connected to power supply, and electric current LED in season is luminous when feeding, and ray cast is entered LGP 2.

Described blooming group 5 is provided in to be combined in first plane of LGP 2 towards the opening 11 of shell 1.Described blooming group 5 includes at least one diffuse optical film or at least one blast blooming.

Described optical module 5 can directly be installed in the shell 1 after all being combined in LGP 2 with led module 3 together.

By aforementioned flat light source structure of the present utility model, when the ray cast of led module 3 generations enters LGP 2 conduction, light can by reflecting material 4 reflection and by described prominent grain 211, concave point 212 or printing ink figure so that light refraction is increased brightness, make the reflection and the light of refraction form the desk lamp light source of homogenising and soft not dazzle by LGP 2 and blooming group 5 again.

The above only is in order to explain preferred embodiment of the present utility model; be not that the attempt tool is to do any pro forma restriction to the utility model; therefore; all have in that identical utility model spirit is following do relevant any modification of the present utility model or change, all must be included in the category of the utility model intention protection.

Claims

1. a desk lamp is characterized in that with anti-dazzle LED plane light source, includes:

2. desk lamp as claimed in claim 1 is characterized in that with anti-dazzle LED plane light source, and described have an optical texture of getting the light function, is a plurality of miniature prominent grain that is shaped on this LGP second plane.

3. desk lamp as claimed in claim 1 is characterized in that with anti-dazzle LED plane light source, and described have an optical texture of getting the light function, is a plurality of miniature concave point that is shaped on this LGP second plane.

4. desk lamp as claimed in claim 1 is characterized in that with anti-dazzle LED plane light source, and described have an optical texture of getting the light function, is a plurality of point-like figures of being located on this LGP second plane.

5. desk lamp as claimed in claim 1 is characterized in that with anti-dazzle LED plane light source described blooming group includes at least one diffuse optical film and at least one blast blooming.

6. desk lamp as claimed in claim 1 is characterized in that with anti-dazzle LED plane light source described shell surface is provided with optical reflectors to the medial surface on this LGP second plane.

7. desk lamp as claimed in claim 1 is characterized in that with anti-dazzle LED plane light source the outside of described shell is combined with the heat dissipation characteristics structure one-body moldedly.