Special-shaped backlight source

Abstract

The utility model relates to a special-shaped backlight source which comprises a cast rubber integrated piece, an LED lamp panel, a reflecting film, a reflecting side film and a diffusion plate. A containing groove is formed in the cast rubber integrated piece, the LED lamp panel is arranged in the containing groove, the reflecting film covers the LED lamp panel, a plurality of small holes are formed in the reflecting film, a plurality of lamp beads are arranged on the LED lamp panel, each lamp bead is located in one small hole of the reflecting film, and the reflecting film is arranged on the reflecting film. Each lamp bead protrudes out of the corresponding small hole, and the reflection side films are arranged on the side wall of the containing groove and the side wall of the diffusion plate. Through the arrangement, the light emitting effect of the whole special-shaped backlight source can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight sources, in particular to a special-shaped backlight source. Background Art

[0002] The backlight is a light source located behind the LCD, and its luminous effect will directly affect the visual effect of the LCD module. The LCD itself does not emit light, it displays graphics or the result of its light modulation.

[0003] Existing custom-shaped backlights typically require a diffuser plate installed on the LED (light-emitting diode) panel to disperse the light and create a softer, more even glow. However, directly attaching the diffuser plate to the LED panel reduces the overall brightness of the custom-shaped backlight and causes the edges of the custom-shaped backlight to dim, resulting in poor luminous efficiency for the entire custom-shaped backlight, which in turn affects the display quality of the LCD module. Utility Model Content

[0004] Based on this, it is necessary to provide a special-shaped backlight source.

[0005] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a special-shaped backlight source, comprising: a cast integral part, an LED light board, a reflective film, a reflective side film and a diffuser plate; the cast integral part is provided with a accommodating groove, the LED light board is arranged in the accommodating groove, the reflective film covers the LED light board, and the reflective film is provided with a plurality of small holes, the LED light board has a plurality of lamp beads, each of the lamp beads is located in one of the small holes in the reflective film, and each of the lamp beads protrudes out of one of the small holes, and the reflective side film is provided on the side wall of the accommodating groove and on the side wall of the diffuser plate.

[0006] In one embodiment, a thermally conductive adhesive is provided between the LED light board and the cast integral part, one side of the thermally conductive adhesive is bonded to the LED light board, and the other side of the thermally conductive adhesive is bonded to the cast integral part.

[0007] In one embodiment, a support column is provided between the diffusion plate and the lamp beads, the reflective film has an opening, the support column is provided on the LED lamp board, the support column passes through the opening on the reflective film, and the support column abuts against the diffusion plate.

[0008] In one embodiment, the side wall protrusion of the diffuser plate is provided with a first limiting lug, and the side wall of the accommodating groove of the cast integral part is provided with a first limiting groove. When the diffuser plate is set in the accommodating groove, the first limiting lug on the diffuser plate is inserted into the first limiting groove.

[0009] In one embodiment, a first fixing glue is provided in the receiving groove on the cast integral part, one side of the first fixing glue is bonded to the side wall of the receiving groove, and the other side of the first fixing glue is bonded to the diffusion plate.

[0010] In one embodiment, the special-shaped backlight source further includes a plurality of optical films, which are stacked on the diffuser plate, and second fixing glue is provided between two adjacent optical films and between the optical films and the diffuser plate.

[0011] In one embodiment, the optical film is provided with second limiting lugs on the four edge lines, and a second limiting groove is provided on the side wall of the accommodating groove. When the optical film is arranged in the accommodating groove, the second limiting lug will be arranged in the second limiting groove.

[0012] In one embodiment, the special-shaped backlight source further includes a plastic shell, which is arranged on the cast integral part, and a limiting convex bump is raised on the outer wall of the cast integral part, and a snap hole is opened on the side wall of the plastic shell, and the limiting convex bump is arranged in the snap hole.

[0013] In one embodiment, the special-shaped backlight source further includes edge glue. When the plastic shell is covered on the cast plastic integrated part, the edge glue is attached to the buckle holes on the plastic shell.

[0014] In one embodiment, the cast integral part includes a plastic part and a metal part, the outer surface of the plastic part is protruded with a reinforcing insert, the metal part is provided with an insert hole, the plastic part is arranged on the metal part, and the reinforcing insert is inserted into the insert hole.

[0015] The beneficial effects of the present invention are as follows: the present invention provides a special-shaped backlight source, which is provided by arranging a reflective film on the LED light board, and a plurality of small holes are opened on the reflective film, each small hole corresponding to a lamp bead on the LED light board, so that the point light source emitted by the lamp bead will be reflected and diffusely reflected after passing through the small holes of the reflective film, thereby improving the overall brightness of the special-shaped backlight source, and at the same time making the luminous effect of each luminous area of the special-shaped backlight source more uniform, and finally achieving the improvement of the overall luminous effect of the special-shaped backlight source. By arranging a reflective side film on the side wall of the accommodating groove, and simultaneously arranging a reflective side film on the side wall around the diffusion plate, the utilization rate of the light source around the special-shaped backlight source can be improved, thereby achieving the improvement of the brightness around the special-shaped backlight source and improving the darkening phenomenon around the special-shaped backlight source. Through the above-mentioned arrangement, the luminous effect of the entire special-shaped backlight source can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 This is a schematic diagram of the three-dimensional decomposition structure of a special-shaped backlight source in one direction according to an embodiment;

[0018] Figure 2 This is a schematic diagram of the three-dimensional exploded structure of the LED light board, the cast plastic integrated part, the reflective side film and the thermal conductive adhesive in one direction in one embodiment;

[0019] Figure 3 In one embodiment Figure 2 A schematic diagram of the partially enlarged structure of part A;

[0020] Figure 4 This is a schematic diagram of the three-dimensional exploded structure of the LED light board, the cast plastic integrated part and the diffuser plate in one direction in one embodiment;

[0021] Figure 5 This is a schematic diagram of the three-dimensional exploded structure of the LED light board, the cast plastic integrated part, the diffuser plate, the optical film, and the plastic shell in one direction in one embodiment;

[0022] Figure 6 This is a schematic diagram of the three-dimensional exploded structure of the cast rubber integral part and the rubber shell in one direction in one embodiment;

[0023] Figure 7 Schematic diagram of the three-dimensional decomposition structure of the cast rubber integral part in one direction in one embodiment.

[0024] In the accompanying drawings, 10 is a special-shaped backlight source; 100 is a cast integral part; 110 is a plastic part; 111 is a receiving groove; 112 is a reinforcing insert; 120 is a metal part; 121 is an insert hole; 130 is a first limiting groove; 140 is a second limiting groove; 150 is a limiting convex bump; 200 is an LED light board; 210 is a lamp bead; 300 is a reflective film; 310 is a small hole; 320 is an opening; 400 is a reflective side film; 500 is a diffuser; 510 is a first limiting lug; 520 is a first fixing glue; 600 is a thermal conductive glue; 700 is a support column; 800 is an optical film; 810 is a second fixing glue; 820 is a second limiting lug; 900 is a glue shell; 910 is a snap hole; 920 is an edging glue. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The following will further describe the technical solution of the present invention in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0026] It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc. indicating an orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0027] In one embodiment, Figure 1 and Figure 2 As shown, a special-shaped backlight source 10 includes: a cast integral part 100, an LED light board 200, a reflective film 300, a reflective side film 400 and a diffuser plate 500; the cast integral part 100 is provided with a receiving groove 111, the LED light board 200 is arranged in the receiving groove 111, the reflective film 300 covers the LED light board 200, and the reflective film 300 is provided with a plurality of small holes 310, the LED light board 200 has a plurality of lamp beads 210, each of the lamp beads 210 is located in one of the small holes 310 of the reflective film 300, and each of the lamp beads 210 protrudes from one of the small holes 310, and the reflective side film 400 is arranged on the side wall of the receiving groove 111 and the side wall of the diffuser plate 500.

[0028] Specifically, by providing the reflective film 300 on the LED light board 200, and by providing a plurality of small holes 310 on the reflective film 300, each small hole 310 corresponds to a lamp bead 210 on the LED light board 200, the point light emitted by the lamp bead 210 will be reflected and diffusely reflected after passing through the small holes 310 of the reflective film 300, thereby improving the overall brightness of the special-shaped backlight 10 and making the luminous effect of each luminous area of the special-shaped backlight more uniform, ultimately improving the overall luminous effect of the special-shaped backlight 10. By providing the reflective side film 400 on the side walls of the receiving groove 111 and simultaneously providing the reflective side film 400 on the surrounding side walls of the diffuser plate 500, the utilization rate of the light source around the special-shaped backlight can be improved, thereby increasing the brightness around the special-shaped backlight 10 and improving the dimming phenomenon around the special-shaped backlight 10. Through the above arrangement, the luminous effect of the entire special-shaped backlight 10 can be improved.

[0029] In order to fix the LED light board 200 on the cast integral part 100 and also to reduce the temperature of the LED light board 200 during operation, in one embodiment, Figure 2 As shown, a thermally conductive adhesive 600 is provided between the LED light board 200 and the cast integral part 100. One side of the thermally conductive adhesive 600 is bonded to the LED light board 200, and the other side of the thermally conductive adhesive 600 is bonded to the cast integral part 100. Specifically, by using the thermally conductive adhesive 600, the LED light board 200 can be adhered and fixed to the cast integral part 100, so as to play a role in limiting and fixing the LED light board 200. At the same time, the design of the thermally conductive adhesive 600 can also conduct the heat generated by the LED light board 200 during operation to the external environment in a timely manner, thereby improving the service life of the LED light board 200, and ultimately achieving the purpose of improving the overall service life of the special-shaped backlight source 10.

[0030] In order to prevent the diffusion plate 500 from sinking, in one embodiment, as Figure 2 and Figure 3As shown, a support column 700 is provided between the diffuser plate 500 and the lamp beads 210. The reflective film 300 is provided with an opening 320. The support column 700 is provided on the LED light board 200. The support column 700 passes through the opening 320 on the reflective film 300 and abuts against the diffuser plate 500. Specifically, three support columns 700 are provided, and the three support columns 700 are arranged in the middle of the LED light board 200. The spacing between two adjacent support columns 700 is equal. Through the above arrangement, the support columns 700 are used to support the diffuser plate 500, preventing the diffuser plate 500 from sagging under the action of gravity, which would cause dark grids to appear on the special-shaped backlight source 10, thereby improving the consistency and uniformity of the overall optical effect of the special-shaped backlight source 10.

[0031] In order to securely mount the diffuser plate 500 on the cast component 100, in one embodiment, Figure 4 and Figure 5 As shown, the sidewalls of the diffuser plate 500 are provided with first limiting lugs 510, and the sidewalls of the receiving groove 111 of the cast integral part 100 are provided with first limiting grooves 130. When the diffuser plate 500 is placed in the receiving groove 111, the first limiting lugs 510 on the diffuser plate 500 are inserted into the first limiting grooves 130. Specifically, the four sidewalls of the diffuser plate 500 are provided with first limiting lugs 510, and the corresponding positions of the sidewalls of the receiving groove 111 are provided with first limiting grooves 130. When the diffuser plate 500 is installed in the receiving groove 111 of the cast integral part 100, each first limiting lug 510 will be located in one of the limiting grooves, thereby limiting and fixing the diffuser plate 500, preventing the diffuser plate 500 from shaking up and down or left and right, which would cause the irregular-shaped backlight source 10 to shake and make abnormal noises.

[0032] In order to further limit and fix the diffusion plate 500, in one embodiment, as shown in FIG. Figure 4 and Figure 5 As shown, a first fixing adhesive 520 is disposed within the receiving groove 111 of the cast integral component 100. One surface of the first fixing adhesive 520 is bonded to the sidewall of the receiving groove 111, and the other surface of the first fixing adhesive 520 is bonded to the diffuser plate 500. Specifically, by disposing the first fixing adhesive 520 on the sidewall of the receiving groove 111, the first fixing adhesive can adhere the diffuser plate 500 to the receiving groove 111, thereby achieving a limited and fixed function for the diffuser plate 500, preventing the diffuser plate 500 from shifting or loosening.

[0033] In order to improve the luminous effect of the special-shaped backlight source 10, in one embodiment, as shown in FIG. Figure 5 As shown, the special-shaped backlight source 10 further includes a plurality of optical films 800, which are stacked and arranged on the diffuser plate 500. A second fixing adhesive 810 is provided between two adjacent optical films 800 and between each optical film 800 and the diffuser plate 500. Specifically, by providing each of the optical films 800 on the special-shaped backlight source 10, each optical film 800 includes: a light-enhancing film, a diffusion film, a light-guiding film, etc. The provision of the optical films 800 can enhance the luminous effect of the special-shaped backlight source 10. At the same time, a second fixing adhesive 810 is provided between two adjacent optical films 800 and between each optical film 800 and the diffuser plate 500. The adhesive action of the second fixing adhesive 810 achieves a limited position fixation of each optical film 800, preventing the optical film 800 from loosening or detaching.

[0034] In order to further fix each of the optical films 800 in the receiving groove 111, in one embodiment, as shown in FIG. Figure 5 As shown, the optical film 800 is provided with second limiting lugs 820 protruding from the edges thereof, and the sidewalls of the receiving groove 111 are provided with second limiting grooves 140. When the optical film 800 is placed in the receiving groove 111, the second limiting lugs 820 will be located in the second limiting grooves 140. Specifically, when each of the optical films 800 is placed in the receiving groove 111, each of the second limiting lugs 820 will be located in the second limiting grooves 140, thereby achieving the limiting and fixing of each of the optical films 800 and preventing each of the optical films 800 from loosening or falling out.

[0035] In one embodiment, the first limiting groove 130 and the second limiting groove 140 can be the same limiting groove. Specifically, the first limiting lug 510 protruding from the diffuser plate 500 and the second limiting lug 820 protruding from each of the optical films 800 are positioned at the same position. Therefore, the first limiting lug 510 and the second limiting lug 820 can be disposed in the same limiting groove.

[0036] In order to protect the internal components of the special-shaped backlight source 10, in one embodiment, as shown in FIG. Figure 5 and Figure 6As shown, the special-shaped backlight source 10 further includes a plastic shell 900, which is provided on the cast integral part 100. A limiting convex bulge 150 is provided on the outer wall of the cast integral part 100. A snap hole 910 is provided on the side wall of the plastic shell 900, and the limiting convex bulge 150 is provided in the snap hole 910. Specifically, by providing the plastic shell 900 on the cast integral part 100, the diffuser plate 500, each of the optical films 800, and the LED light board 200 and other components can be wrapped and protected. When the plastic shell 900 is covered on the cast integral part 100, the limiting convex bulge 150 on the cast integral part 100 is engaged and fixed with the snap hole 910 provided in the plastic shell 900, thereby preventing the plastic shell 900 from loosening and making abnormal noises.

[0037] In order to prevent the plastic shell 900 from falling out, in one embodiment, Figure 6 As shown, the special-shaped backlight source 10 further includes an edge glue 920. When the plastic shell 900 is covered on the cast plastic integrated part 100, the edge glue 920 is attached to the buckle hole 910 on the plastic shell 900. Specifically, by attaching the edge glue 920 to the plastic shell 900, the limiting convex bump 150 can be protected to prevent the limiting convex bump 150 from being pushed out of the buckle hole 910, thereby preventing the plastic shell 900 from falling out.

[0038] In order to improve the utilization rate of the light source and enhance the overall heat dissipation capability, in one embodiment, Figure 7 As shown, the cast integral part 100 includes a plastic part 110 and a metal part 120. The outer surface of the plastic part 110 is provided with a reinforcement insert 112, and the metal part 120 is provided with an insert hole 121. The plastic part 110 is arranged on the metal part 120, and the reinforcement insert 112 is inserted into the insert hole 121. Specifically, the white plastic part 110 is injection-molded into the metal part 120, and the receiving groove 111 is provided in the plastic part 110. This arrangement can improve the reflectivity of the inner wall of the receiving groove 111, thereby achieving the purpose of improving the utilization rate of the light source. At the same time, the metal part 120 is made of metal, which can improve the overall heat dissipation capacity of the special-shaped backlight source 10, and ultimately achieve the effect of extending the service life of the special-shaped backlight source 10. Furthermore, by inserting the reinforcing insert 112 into the insert hole 121 , the bonding force between the plastic component 110 and the metal component 120 can be enhanced, thereby preventing the cast integral component 100 from becoming loose or other undesirable phenomena.

[0039] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A special-shaped backlight source, characterized in that: include: Casting one-piece, LED light board, reflective film, reflective side film and diffuser plate; The cast integral part is provided with a receiving groove, the LED lamp board is arranged in the receiving groove, the reflective film covers the LED lamp board, and the reflective film is provided with a plurality of small holes, the LED lamp board has a plurality of lamp beads, each of the lamp beads is located in one of the small holes in the reflective film, and each of the lamp beads protrudes out of one of the small holes, and the reflective side film is provided on the side wall of the receiving groove and on the side wall of the diffuser plate.

2. The special-shaped backlight source according to claim 1, characterized in that: A heat-conducting adhesive is provided between the LED light board and the cast adhesive integral part. One side of the heat-conducting adhesive is bonded to the LED light board, and the other side of the heat-conducting adhesive is bonded to the cast adhesive integral part.

3. The special-shaped backlight source according to claim 1, characterized in that: A support column is provided between the diffusion plate and the lamp beads, the reflective film is provided with an opening, the support column is provided on the LED lamp board, the support column passes through the opening on the reflective film, and the support column abuts against the diffusion plate.

4. The special-shaped backlight source according to claim 1, wherein: The side wall protrusion of the diffuser plate is provided with a first limiting lug, and the side wall of the accommodating groove of the cast integral part is provided with a first limiting groove. When the diffuser plate is arranged in the accommodating groove, the first limiting lug on the diffuser plate is inserted into the first limiting groove.

5. The special-shaped backlight source according to claim 1, characterized in that: A first fixing glue is provided in the receiving groove on the cast glue integral part, one side of the first fixing glue is bonded to the side wall of the receiving groove, and the other side of the first fixing glue is bonded to the diffusion plate.

6. The special-shaped backlight source according to claim 1, characterized in that: It also includes a plurality of optical films, which are stacked on the diffusion plate, and a second fixing glue is provided between two adjacent optical films and between the optical films and the diffusion plate.

7. The special-shaped backlight source according to claim 6, characterized in that: The optical film is provided with second limiting lugs on the edge lines around it, and a second limiting groove is provided on the side wall of the accommodating groove. When the optical film is arranged in the accommodating groove, the second limiting lug will be arranged in the second limiting groove.

8. The special-shaped backlight source according to claim 1, wherein: It also includes a plastic shell, which is arranged on the cast plastic integral part. A limiting convex bump is raised on the outer side wall of the cast plastic integral part. A snap hole is opened on the side wall of the plastic shell, and the limiting convex bump is arranged in the snap hole.

9. The special-shaped backlight source according to claim 8, characterized in that: It also includes edge glue, when the plastic shell is covered on the cast plastic integrated part, the edge glue is attached to the buckle holes on the plastic shell.

10. The special-shaped backlight source according to claim 1, wherein: The cast integral part comprises a plastic part and a metal part. A reinforcing insert is convexly provided on the outer surface of the plastic part. The metal part is provided with an insert hole. The plastic part is arranged on the metal part, and the reinforcing insert is inserted into the insert hole.

Images