Backlight plate for side angle installation of LED (light-emitting diode) lamp

Abstract

A backlight plate for side corner installation of an LED lamp comprises a support shell, a sinking groove is formed in a placement face on one side of the support shell, a light guide plate is installed in the sinking groove, a corner edge protruding part vertically protruding out of the edge of an unfilled corner is arranged on one side of the unfilled corner of the sinking groove, a side edge lamp groove is formed in the placement face, and a light-emitting assembly is arranged in the side edge lamp groove. The LED lamp beads are arranged in the side edge lamp grooves in a sinking mode, the LED lamp beads are right opposite to the corner edge side walls of the corner edge protruding parts, light emitted by the LED lamp beads is diffused through the corner edge protruding parts and is transmitted in the direction of the sinking grooves, the side walls of the first notch edges of the light guide plate are right opposite to the corner edge side walls, and the light emitted by the LED lamp beads is guided to the surface of the light guide plate along the side walls of the first notch edges. According to the utility model, the single LED lamp bead diffuses and transmits through the angle edge protruding part, the light guide plate is used for realizing plane light guide of light rays, and the transmitting film is used for further reflecting the transmitted light, so that the light utilization rate is improved, and the brightness and the uniformity of the backlight plate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight panels, in particular to a backlight panel for side-angle installation of an LED lamp. Background Art

[0002] The backlight panel is a light source device used to ensure that light is emitted from behind the liquid crystal display. Because the liquid crystal display device itself is transparent and does not emit light, a backlight panel is needed to provide light for the liquid crystal display device. The brightness, uniformity and other indicators of the backlight panel have a direct impact on the relevant performance of the liquid crystal display panel.

[0003] With the intelligence of household appliances, backlight panels are used more and more widely in the field of household appliances, and backlight panels also tend to be miniaturized. In order to adapt to the miniaturization of backlight panels, the number of LED lamp beads set in the light-emitting components of the backlight panel is changed from multiple to single. After the LED lamp beads are changed from multiple to single, it is impossible to improve the brightness difference and uniformity of the backlight panel by designing a specific arrangement and combination of LED lamp beads on the lamp panel. Therefore, the transmission structure of the backlight panel must be improved to solve the above-mentioned problems caused by the change of LED lamp beads from multiple to single. Utility Model Content

[0004] The utility model aims to provide a backlight panel with LED lamps installed at side angles, so as to improve the problem of poor brightness and uniformity of the backlight panel when the LED lamp beads are changed from multiple to single during the development of miniaturization of the backlight panel.

[0005] In view of this, the technical solution provided by the utility model is: a backlight panel for side corner installation of an LED lamp, comprising a bracket shell, a placement surface is provided on one side of the bracket shell, a sinking groove is provided on the placement surface, a light guide plate is installed on the sinking groove, the sinking groove is a quadrilateral with a missing corner, one side of the missing corner of the sinking groove has a corner protrusion protruding vertically on the missing corner side, the corner protrusion is a rectangular setting, a side lamp groove is provided on the placement surface of the side wall of the rectangular side adjacent to the corner protrusion, the side lamp groove is provided with a light-emitting component, and the light-emitting The component includes an LED lamp bead, which is sunken in the side lamp groove. The LED lamp bead emits light from the side. The LED lamp bead is opposite to the corner side wall of the corner protrusion. Through the corner side wall, the light emitted by the LED lamp bead is divergent through the corner protrusion and transmitted toward the sinking groove. The light guide plate is provided with a first missing edge corresponding to the sinking groove. The side wall of the first missing edge is opposite to the corner side wall. The light emitted by the LED lamp bead is guided along the side wall of the first missing edge to the surface of the light guide plate.

[0006] Furthermore, a reflective film is provided below the light guide plate, the reflective film is attached to the bottom of the sinking groove, the reflective film is provided in a quadrilateral with a missing corner, one side of the missing corner of the reflective film has a reflective protrusion protruding vertically from the missing corner edge, and the reflective protrusion corresponds to the corner edge protrusion. By providing a reflective film below the light guide plate, the reflective film can reflect the light transmitted from the LED lamp beads from the corner edge side wall toward the placement surface of the bracket shell, which is beneficial to improve the light utilization rate of the backlight plate, and further improve the brightness of the backlight plate surface.

[0007] Furthermore, a diffuser film is provided on the upper part of the light guide plate, and the diffuser film is provided with a second missing edge corresponding to the light guide plate. Through the diffuser film, the light transmitted from the light guide plate is diffusely reflected by the diffuser film, so that the light changes from harsh glare to soft light after passing through the diffuser film.

[0008] Furthermore, a circle of light-shielding film is arranged outside the light-diffusing film, and the light-shielding film is attached to the placement surface. The light-shielding film can further reflect the light scattered at the edge of the bracket shell onto the light guide plate by shielding, so that the light at the edge is linearly re-reflected into the light guide area on the light guide plate, further improving the light utilization rate of the LED lamp beads.

[0009] Furthermore, a sunken heat dissipation groove is provided in the sunken groove, and a plurality of ribs are arranged horizontally and vertically crosswise on the heat dissipation groove, and the ribs are flush with the bottom of the sunken groove. In this way, when the reflective film is installed in the sunken groove, it can be supported by the ribs and pressed flush with the bottom of the sunken groove. Due to the small size of the bracket shell, the emitting film is easy to accumulate heat when reflecting the light of the LED lamp beads. The sunken heat dissipation groove can help the reflective film improve the heat dissipation effect, and avoid the emitting film and the light guide plate from being deformed due to heat and affecting the effect of the backlight plate.

[0010] Furthermore, a retaining edge is provided at the edge of the placement surface, and a first opening and a second opening are provided on the retaining edge. The first opening and the second opening facilitate the installation of the light-emitting component, the reflective film, and the light guide plate inside the bracket shell.

[0011] Furthermore, an inner wall of the retaining edge is provided with a concave step for positioning the liquid crystal display device.

[0012] Furthermore, the light emitting assembly includes a flexible wire board, the flexible wire board is fitted with the edge of the retaining edge along the placement surface, and the flexible wire board extends from the surface of the side light groove to the first opening.

[0013] Furthermore, a foot plate is provided at the bottom of the support shell, and a hook is provided on the foot plate. The support shell is supported by the foot plate provided at the bottom, and the bracket shell can be conveniently installed and fixed on the application equipment by using the hook.

[0014] In the utility model, LED lamp beads can be installed in the side lamp grooves of the bracket shell. The light generated by a single LED lamp bead is diffused through the protruding parts of the corner edges and transmitted toward the direction of the sinking groove. The light guide plate is used to realize the planar light guidance of the light, and the emission film is used to further reflect the transmitted light, thereby improving the light utilization rate of the backlight plate, improving the brightness of the backlight plate, and improving the uniformity of the backlight plate.

[0015] In the utility model, the LED lamp beads are sunken in the side lamp grooves. Since the LED lamp beads emit light from the side and the LED lamp beads emit light facing the corner side walls of the corner protrusions, the light energy emitted by the LED lamp beads can directly pass through the corner protrusions and evenly diffuse on the light guide plate.

[0016] In the utility model, after the bracket shell design becomes smaller, in order to improve the heat dissipation effect in the bracket shell, a heat dissipation groove is further arranged in the sinking groove of the bracket shell. The heat generated by the back plate is diffused in time by utilizing the heat dissipation groove in the bracket shell, thereby avoiding thermal deformation of the emission film and the light guide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the three-dimensional structural schematic diagrams of the utility model.

[0018] Figure 2 This is the second schematic diagram of the three-dimensional structure of the utility model.

[0019] Figure 3 It is a schematic diagram of the three-dimensional decomposition structure of the backlight panel.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the bracket shell.

[0021] Figure 5 It is a schematic diagram of the structure of the light-emitting component.

[0022] Among them: 1- bracket shell, 11- foot plate, 12- hook, 13- placement surface, 14- retaining edge, 141- first opening, 142- recessed step, 143- second opening, 15- side lamp groove, 16- sinking groove, 161- corner protrusion, 162- corner side wall, 17- heat dissipation groove, 18- rib, 2- reflective film, 21- reflective protrusion, 3- light guide plate, 31- first missing edge, 4- diffuser film, 41- second missing edge, 5- light-emitting component, 51- LED lamp bead, 52- flexible line board, 6- shading film. DETAILED DESCRIPTION

[0023] The following is a brief description of the implementation of the present utility model in conjunction with the accompanying drawings.

[0024] A backlight panel for side-angle installation of LED lamps, referring to 1- Figure 4, including a bracket shell 1, a support plate 11 is provided at the bottom of the bracket shell 1, a hook 12 is provided on the support plate 11, a pair of support plates 11 are provided, and at least one hook 12 is provided on each support plate 11. When the backlight panel is installed in the device, the bracket shell 1 is supported by the support plate 11 provided at the bottom and can be conveniently installed and fixed by using the hook 12. A placement surface 13 is provided on one side of the bracket shell 1, and a retaining edge 14 is provided at the edge of the placement surface 13. The portion surrounded by the retaining edge 14 and the placement surface 13 forms a space for installing a liquid crystal display device. A first opening 141 and a second opening 143 are provided on the retaining edge 14, and an inner wall of the retaining edge 14 is provided with an inner concave step 142 for positioning the liquid crystal display device. The first opening 141 and the second opening 143 facilitate the installation of the light-emitting component 5, the reflective film 2, and the light guide plate 3 inside the bracket shell 1.

[0025] The placement surface 13 is provided with a sinking groove 16, and the sinking groove 16 is installed with a light guide plate 3. The sinking groove 16 is a quadrilateral with a missing corner. One side of the missing corner of the sinking groove 16 has a corner protrusion 161 that vertically protrudes from the missing corner. The corner protrusion 161 is a rectangular arrangement. A sunken heat dissipation groove 17 is provided in the sinking groove 16. The heat dissipation groove 17 is used to improve the heat dissipation effect of the backlight panel during use and reduce the heat deformation of the light guide plate 3. A plurality of ribs 18 arranged horizontally and vertically crosswise are provided on the heat dissipation groove 17, and the ribs 18 are flush with the bottom of the sinking groove 16.

[0026] A side light groove 15 is provided on the placement surface 13 of the side wall 162 of the rectangular side adjacent to the corner protrusion 161, and the side light groove 15 is provided with a light emitting component 5, referring to Figure 5 The light-emitting component 5 includes an LED lamp bead 51 and a flexible wire board 52. The LED lamp bead 51 is arranged on the flexible wire board 52. The LED lamp bead 51 is sunken in the side lamp groove 15. The flexible wire board 52 is attached to the edge of the retaining edge 14 along the placement surface 13. The flexible wire board 52 extends from the surface of the side lamp groove 15 to the first opening 141, so as to facilitate the electrical connection between the LED lamp bead 51 and the external power supply. The LED lamp bead 51 is side-emitting. The LED lamp bead 51 is opposite to the corner side wall 162 of the corner protrusion 161. Through the corner side wall 162, the light emitted by the LED lamp bead 51 is transmitted toward the sinking groove 16 through the corner protrusion 161. The light guide plate 3 is provided with a first missing edge 31 corresponding to the sinking groove 16. The side wall of the first missing edge 31 is opposite to the corner side wall 162. The light emitted by the LED lamp bead 51 is guided along the side wall of the first missing edge 31 onto the surface of the light guide plate 3.

[0027] In this embodiment, in order to improve the light utilization rate of the backlight panel and achieve the purpose of improving the brightness of the backlight panel surface, a reflective film 2 is provided under the light guide plate 3. The reflective film 2 is attached to the bottom of the sinking groove 16, and is supported by the ribs 18 flush with the sinking groove 16 to ensure that the bottom of the reflective film 2 is flush. The reflective film 2 is a quadrilateral with a missing corner. One side of the missing corner of the reflective film 2 has a reflective protrusion 21 protruding vertically from the missing corner edge. The reflective protrusion 21 corresponds to the corner protrusion 161. The reflective film 2 reflects the light transmitted by the LED lamp bead 51 from the corner side wall 162 toward the placement surface 13 of the bracket shell 1, and the LED lamp bead 51 is placed to transmit from the bottom of the bracket shell 1.

[0028] In this embodiment, a diffuser film 4 is provided on the upper part of the light guide plate 3, and the diffuser film 4 is provided with a second missing edge 41 corresponding to the light guide plate 3. Through the diffuser film 4, the light transmitted from the light guide plate 3 is diffusely reflected by the diffuser film 4, so that the light is changed from a dazzling glare to a soft light after passing through the diffuser film 4. A circle of shading film 6 is provided on the outer side of the diffuser film 4, and the shading film 6 is attached to the placement surface 13. The shading film 6 can further reflect the light diverged at the edge of the bracket shell 1 to the light guide plate 3 by blocking, so that the light at the edge is linearly reflected back to the light guiding area on the light guide plate 3, further improving the light utilization rate of the LED lamp beads 51.

[0029] The above embodiments only express the implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A backlight panel for side-angle installation of LED lamps, characterized in that: The invention comprises a bracket shell, a placement surface is provided on one side of the bracket shell, a sinking groove is provided on the placement surface, a light guide plate is installed on the sinking groove, the sinking groove is a quadrilateral with a missing corner, one side of the missing corner of the sinking groove has a corner protrusion protruding vertically on the missing corner, the corner protrusion is a rectangular arrangement, a side lamp groove is provided on the placement surface of the side wall of the rectangular side adjacent to the corner protrusion, the side lamp groove is provided with a light-emitting component, the light-emitting component comprises an LED lamp bead, the LED lamp bead is sunken in the side lamp groove, the LED lamp bead is side-emitting, the LED lamp bead is opposite to the corner side wall of the corner protrusion, the light emitted by the LED lamp bead is transmitted toward the direction of the sinking groove through the corner side wall, the light guide plate is provided with a first missing edge corresponding to the sinking groove, the side wall of the first missing edge is opposite to the corner side wall, the light emitted by the LED lamp bead is guided along the side wall of the first missing edge to the surface of the light guide plate.

2. The backlight panel for side-angle installation of LED lamp according to claim 1, characterized in that: A reflective film is provided below the light guide plate, and the reflective film is attached to the bottom of the sinking groove. The reflective film is set as a quadrilateral with a missing corner. One side of the missing corner of the reflective film has a reflective protrusion that protrudes vertically from the missing corner edge, and the reflective protrusion corresponds to the corner edge protrusion.

3. The backlight panel for side-angle installation of LED lamp according to claim 1, characterized in that: A light-scattering film is disposed on the upper portion of the light guide plate, and the light-scattering film is provided with a second missing edge corresponding to the light guide plate.

4. The backlight panel for side-angle installation of LED lamp according to claim 3, characterized in that: A circle of light-shielding film is arranged on the outer side of the light-scattering film, and the light-shielding film is attached to the placement surface.

5. The backlight panel for side-angle installation of LED lamp according to claim 1, characterized in that: A sunken heat dissipation groove is provided in the sunken groove, and a plurality of ribs arranged horizontally and vertically crosswise are provided on the heat dissipation groove, and the ribs are flush with the bottom of the sunken groove.

6. The backlight panel for side-angle installation of LED lamp according to claim 1, characterized in that: A retaining edge is provided at the edge of the placement surface, and a first opening and a second opening are formed on the retaining edge.

7. The backlight panel for side-angle installation of LED lamp according to claim 6, characterized in that: The inner wall of the retaining edge is provided with a concave step for positioning the liquid crystal display device.

8. The backlight panel for side-angle installation of LED lamp according to claim 7, characterized in that: The light emitting assembly includes a flexible wire board, the flexible wire board is attached to the edge of the retaining edge along the placement surface, and the flexible wire board extends from the surface of the side light groove to the first opening.

9. The backlight panel for side-angle installation of LED lamp according to claim 1, characterized in that: A foot plate is provided at the bottom of the bracket shell, and a hook is provided on the foot plate.

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