CN213513363U

CN213513363U - Side light-entering type LED panel lamp

Info

Publication number: CN213513363U
Application number: CN202021860089.6U
Authority: CN
Inventors: 妤间寒; 楼亮
Original assignee: KUNSHAN CHENGTAI ELECTRIC CO Ltd
Current assignee: KUNSHAN CHENGTAI ELECTRIC CO Ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-06-22
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses a side light-entering type LED flat lamp, which comprises a back plate, an LED lamp strip, an optical module, a lamp frame, a buffer strip and a supporting frame, wherein a reflecting layer, a light guide plate and a diffusion plate are sequentially overlapped into a flat optical module; the buffer strip is positioned in a space between the support frame and the lamp frame, and the buffer strip is compressed due to heating expansion of the light guide plate; the optical module is arranged between the back plate and the lamp frame. The utility model discloses can absorb the thermal expansion deformation of light guide plate with the elastic deformation of buffering strip to avoid light guide plate extrusion LED lamp pearl, stop because of the LED lamp pearl that the light guide plate thermal expansion deformation leads to damages, can effectively promote the life of LED plane light source.

Description

Side light-entering type LED panel lamp

Technical Field

The utility model belongs to the technical field of lamps and lanterns, in particular to dull and stereotyped lamp of light formula LED is gone into to side.

Background

The LED (Light Emitting Diode) technology is widely popularized due to its advantages of power saving, high brightness, long service life, good anti-seismic performance, etc., and the LED lamp is more and more widely applied in the daily lighting and display in recent years. The relatively important LED lamp is a flat LED lamp, the flat LED lamp is planar, parts inside the flat LED lamp are planar, a planar reflecting layer, a light guide plate and a diffusion layer are sequentially arranged in a lamp frame, an LED lamp strip is arranged in a back plate and at the side edge of the light guide plate, light rays are reflected for multiple times under the combined action of the reflecting layer and the light guide plate to achieve the purpose of improving the uniformity, and glare is effectively prevented through the diffusion layer.

Generally, the LED lamp strips are fixed on a lamp frame, LEDs enter light from the side face of a light guide plate and are projected out through the reflection of microstructures inside the light guide plate and the diffusion effect of a diffusion plate, wherein the gaps between the light guide plate and the LED lamp beads are generally required to be very small in order to ensure that the brightness is not attenuated, the LED lamp beads can generate very large heat when emitting light and transmit the heat to the light guide plate, the light guide plate is generally made of PMMA (acrylic), the expansion rate of PMMA is 3 per thousand, the LED lamp beads are extremely easy to be damaged after the light guide plate is heated and expanded, particularly, double-phase light emitting modules entering the light from two sides are adopted, the light guide plate simultaneously expands to two sides and supports the LED lamp beads, and.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem of main solution provides a dull and stereotyped lamp of light formula LED is gone into to side can absorb the thermal expansion deformation of light guide plate with the elastic deformation of buffering strip to avoid light guide plate extrusion LED lamp pearl, stop because of the LED lamp pearl that the light guide plate thermal expansion deformation leads to damages, can effectively promote the life of LED plane light source.

In order to solve the technical problem, the utility model discloses a technical scheme be: the side light-entering type LED flat lamp comprises a back plate, an LED lamp strip, an optical module, a lamp frame, a buffer strip and a supporting frame, wherein a reflecting layer, a light guide plate and a diffusion plate are sequentially overlapped into a flat optical module;

the buffer strip is positioned in a space between the support frame and the lamp frame, and the buffer strip is compressed due to the heating expansion of the light guide plate;

the optical module is arranged between the back plate and the lamp frame.

Furthermore, the supporting frame is a U-shaped clamping frame, the LED lamp strip is installed at the bottom of the clamping frame, two clamping arms capable of clamping the optical module are extended out of the tail end of the clamping frame, and the optical module is clamped through the vertical action of the two clamping arms.

The supporting frame comprises a first side wall, a second side wall and a third side wall which are sequentially connected, the first side wall, the second side wall and the third side wall enclose an installation cavity at one side far away from the optical module, and the LED lamp strip is arranged at one side of the second side wall close to the optical module; the buffer strip is located in the installation cavity.

Furthermore, a clamping strip with a rectangular cross section is formed on the inner side of the lamp frame, the clamping strip extends into the mounting cavity, and the buffering strip is located between the clamping strip and the second side wall.

Further, the LED flat lamp further comprises a buffer layer, and the buffer layer is located between the optical module and the back plate.

Further, the support frame is an aluminum profile extrusion type frame.

Further, the cross-sectional shape of the bottom of the clamping frame is consistent with that of the light bar.

The thickness of the clamping arm is 0.4-0.6mm, and the length of the clamping arm extending to the surface of the optical module is 4.2-5.0 mm.

The buffer strip is a spring, an elastic cushion, rubber or foam.

The buffer layer is a plastic absorption buffer layer.

The utility model has the advantages that:

the utility model discloses a backplate, LED lamp strip, optical module, rim, buffering strip and braced frame, buffering strip is located the space between braced frame and the rim, owing to be provided with buffering strip, can extrude buffering strip when the light guide plate is heated to peripheral inflation, absorb the thermal expansion deformation of light guide plate through the elastic deformation of buffering strip, and because LED lamp strip is installed in braced frame, can drive braced frame and LED lamp strip synchronous flaring when the light guide plate expands, thereby avoid the light guide plate to extrude LED lamp strip, stop LED lamp strip damage because of the thermal expansion deformation of light guide plate leads to, can effectively promote the life of LED plane light source;

furthermore, the utility model discloses a support frame can be the clamping frame of type U, through the two centre gripping arms of clamping frame from top to bottom the effect with optical module centre gripping, generally in order to guarantee luminous effect, the width and the light guide plate thickness of LED lamp strip need basic unanimity, if in the dull and stereotyped lamp working process of LED, LED lamp strip skew can influence luminous effect, and the utility model discloses an LED lamp strip is fixed through the clamping frame, then the clamping frame grips luminous module again, therefore, even if the light guide plate is heated and expanded, can not change LED lamp strip relative to the position of light guide plate in the thickness direction yet, so can guarantee better luminous effect;

furthermore, the supporting frame of the present invention comprises a first side wall, a second side wall and a third side wall which are connected in sequence, wherein the first side wall, the second side wall and the third side wall enclose an installation cavity at one side far away from the optical module, and the LED light bar is arranged at one side of the second side wall close to the optical module; the buffering strip is located during the installation cavity equipment, only need with braced frame from one side of rim insert can, consequently the braced frame's of shape assemblability is better, reduces the equipment cost.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

Fig. 1 is a sectional view of embodiment 1 of the present invention;

fig. 2 is a sectional view of embodiment 2 of the present invention;

the parts in the drawings are marked as follows:

backplate 1, LED lamp strip 2, reflection stratum 31, light guide plate 32, diffuser plate 33, rim 4, card strip, buffering strip 5, holding frame 6, the bottom 61 of holding frame, centre gripping arm 62, buffer layer 7, first lateral wall 81, second lateral wall 82, third lateral wall 83, installation cavity 84.

Detailed Description

The following description is provided for illustrative embodiments of the present invention, and the advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure of the present invention. The present invention can also be implemented in other different ways, i.e. different modifications and changes can be made without departing from the scope of the present invention.

Example 1: a side-in light type LED flat lamp is shown in figure 1 and comprises a back plate 1, an LED light bar 2, an optical module, a light frame 4, a buffer strip 5 and a supporting frame, wherein a reflecting layer 31, a light guide plate 32 and a diffusion plate 33 are sequentially overlapped to form the flat optical module, and the back plate is positioned at the side close to the reflecting layer;

the supporting frame is a U-shaped clamping frame 6, the LED lamp strip is mounted at the bottom 61 of the clamping frame, two clamping arms 62 capable of clamping the optical module extend out of the tail end of the clamping frame, and the optical module is clamped through the up-and-down action of the two clamping arms;

the buffer strip is positioned in a space between the clamping frame and the lamp frame, and the buffer strip is compressed due to the heating of the light guide plate;

the optical module is arranged between the back plate and the lamp frame.

The distance between the two clamping arms is consistent with the thickness of the optical module.

In this embodiment, the LED flat lamp further includes a buffer layer 7, and the buffer layer is located between the optical module and the back plate.

Preferably, the buffer layer is a plastic absorption buffer layer. In this embodiment, the thickness of the plastic absorption buffer layer is 0.3-15 mm. The plastic uptake buffer layer is the plastic layer of PVC layer, PET layer, PP layer, PE layer, PMMA layer, PC layer, PS layer or other materials, owing to adopted the plastic uptake buffer layer between backplate and reflection stratum, not only has the deformation function when buffering expend with heat and contract with cold, moreover because the plastic uptake buffer layer material is thinner, be favorable to promoting the radiating effect, make the product have long service life's advantage, can also have buffering absorbing effect in the transportation, can effectively avoid damaging in the transportation, convenient transportation.

The support frame is an aluminum profile extruded frame, but is not limited thereto as long as the optical module can be clamped.

The cross-sectional shape of the bottom of the clamping frame is consistent with that of the light bar.

In this embodiment, the thickness D of the clamping arm is 0.4-0.6mm, and the length L of the clamping arm extending to the surface of the optical module is 4.2-5.0mm, but not limited thereto, so that the optical module can be clamped.

The buffer strip is a spring, an elastic pad, rubber or foam, but is not limited thereto.

In this embodiment, the lamp frame is an aluminum frame, and the back plate is a metal plate. But is not limited thereto and may be of other materials, such as plastic.

When the light guide plate is heated to expand towards the periphery, the buffer strip is extruded, the thermal expansion deformation of the light guide plate is absorbed through the elastic deformation of the buffer strip, and the LED lamp strip is fixed on the light emitting module through the clamping frame, namely the distance between the LED lamp strip and the light guide plate is not needed relatively, and the clamping frame and the LED lamp strip are driven to synchronously expand outwards when the light guide plate expands, so that the LED lamp strip is prevented from being extruded by the light guide plate, the damage of the LED lamp strip caused by the thermal expansion deformation of the light guide plate is avoided, and the service life of the LED plane light source can be effectively; when the light guide plate retracts, the buffer strip is restored under the action of the elasticity of the buffer strip.

Example 2: as shown in fig. 2, the structure is similar to that of embodiment 1, except that: the supporting frame comprises a first side wall 81, a second side wall 82 and a third side wall 83 which are sequentially connected, a mounting cavity 84 is enclosed by the first side wall, the second side wall and the third side wall at one side far away from the optical module, and the LED lamp strip is arranged at one side of the second side wall close to the optical module; the buffer strip is located in the installation cavity.

In this embodiment, the LED light bar is mounted on one side of the second sidewall close to the light emitting module.

The inner side of the lamp frame forms a clamping strip 41 with a rectangular cross section, the clamping strip extends into the mounting cavity, and the buffering strip is positioned between the clamping strip and the second side wall.

In this embodiment, no buffer layer is provided, and the optical module is limited by the back plate and the bezel from the upper and lower directions, respectively.

During assembly, the supporting frame is inserted from one side of the lamp frame, so that the supporting frame with the shape is better in assembly performance, and the assembly cost is reduced

The principle is similar to that of embodiment 1, and the expansion amount of the light guide plate is absorbed by the buffer strip, so that the bead of the LED light bar is prevented from being crushed, and therefore, the detailed description is omitted.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same principle as the protection scope of the present invention.

Claims

1. The utility model provides a dull and stereotyped lamp of formula LED is gone into to side which characterized in that: the LED backlight module comprises a back plate (1), an LED lamp bar (2), an optical module, a lamp frame (4), a buffer strip (5) and a supporting frame, wherein a reflecting layer (31), a light guide plate (32) and a diffusion plate (33) are sequentially overlapped to form a flat optical module, and the back plate is positioned on the side close to the reflecting layer;

the optical module is arranged between the back plate and the lamp frame.

2. The side-entry LED flat lamp of claim 1, wherein: the supporting frame is a U-shaped clamping frame (6), the LED lamp strip is installed at the bottom (61) of the clamping frame, two clamping arms (62) capable of clamping the optical module are extended out of the tail end of the clamping frame, and the optical module is clamped through the two clamping arms acting up and down.

3. The side-entry LED flat lamp of claim 1, wherein: the supporting frame comprises a first side wall (81), a second side wall (82) and a third side wall (83) which are sequentially connected, a mounting cavity (84) is defined by the first side wall, the second side wall and the third side wall at one side far away from the optical module, and the LED lamp strip is arranged at one side of the second side wall close to the optical module; the buffer strip is located in the installation cavity.

4. The side-entry LED flat lamp of claim 3, wherein: the lamp frame is characterized in that a clamping strip (41) with a rectangular cross section is formed on the inner side of the lamp frame, the clamping strip extends into the mounting cavity, and the buffering strip is located between the clamping strip and the second side wall.

5. The side-entry LED flat lamp of claim 1, wherein: the LED flat lamp further comprises a buffer layer (7), and the buffer layer is located between the optical module and the back plate.

6. The side-entry LED flat lamp of claim 1, wherein: the support frame is an aluminum profile extrusion type frame.

7. The side-entry LED flat lamp of claim 2, wherein: the cross-sectional shape of the bottom of the clamping frame is consistent with that of the light bar.

8. The side-entry LED flat lamp of claim 2, wherein: the thickness of the clamping arm is 0.4-0.6mm, and the length of the clamping arm extending to the surface of the optical module is 4.2-5.0 mm.

9. The side-entry LED flat lamp of claim 1, wherein: the buffer strip is a spring, an elastic cushion, rubber or foam.

10. The side-entry LED flat lamp of claim 5, wherein: the buffer layer is a plastic absorption buffer layer.