CN218446294U - Lamp strip structure and backlight unit - Google Patents
Lamp strip structure and backlight unit Download PDFInfo
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- CN218446294U CN218446294U CN202220884113.2U CN202220884113U CN218446294U CN 218446294 U CN218446294 U CN 218446294U CN 202220884113 U CN202220884113 U CN 202220884113U CN 218446294 U CN218446294 U CN 218446294U
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- circuit board
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Abstract
The utility model relates to a display device technical field provides a lamp strip structure and backlight unit, and wherein, the lamp strip structure includes: a circuit board; the light source is arranged on the circuit board and is electrically connected with the circuit board; the socket is arranged on the circuit board and is electrically connected with the circuit board; the bottom of the lens is provided with a light source cavity and a socket groove, the lens is connected to the circuit board, the light source cavity covers the outside of the light source, and the socket is positioned in the socket groove. The socket is arranged at the bottom of the lens, the structure is simple, the processing is convenient, then the socket is arranged in the socket groove, the light energy emitted by the light source through the lens cannot pass through the socket, namely, the light energy emitted by the light source through the lens is directly reflected by the second reflector plate to reach the diffusion plate to form system effective light energy, and therefore the problems of black cluster and color cast cannot occur on a display picture on the liquid crystal panel; and because the bottom of the lens is provided with the socket groove, the circuit board does not need to be lengthened, and the cost is saved.
Description
Technical Field
The utility model relates to a display device technical field, more specifically say, relate to a lamp strip structure and backlight unit.
Background
Referring to fig. 1, in a conventional direct-type backlight module, a light bar 10 provides a uniform surface light source for an effective display area. The light bar 10 comprises a circuit board 11, a light source 12, a lens 13 and a socket 14, and light energy emitted from the side wall of the lens 13 is reflected by a bottom reflector 20 and then emitted upwards to reach a diffusion plate 30 to form system effective light energy. Since the socket 14 is disposed on the circuit board 11, the reflecting sheet 20 needs to be partially provided with a through hole for avoiding, and thus the socket 14 becomes a receiving surface for partial light energy. However, the socket 14 is made of plastic material by injection molding, and has a poor surface reflection performance compared to the reflector 20, and has a color difference with the reflector 20, and the area corresponding to the display screen of the liquid crystal panel 40 often has black cluster and color cast problems. Meanwhile, in order to avoid influencing the light energy of the main interval emitted from the side surface of the lens received by the reflector plate 20, the distance between the socket 14 and the lens 13 is increased (generally, the distance needs to be kept about 20 mm), so that the length of the circuit board is increased, and the additional cost is increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a lamp strip structure and backlight unit to there is the black group of display screen and colour cast and the technical problem who adds the increase in cost of extension circuit board in the straight following formula backlight unit who solves among the prior art.
In order to achieve the above object, the utility model adopts the following technical scheme:
in one aspect, the utility model provides a lamp strip structure, include:
a circuit board;
the light source is arranged on the circuit board and is electrically connected with the circuit board;
the socket is arranged on the circuit board and is electrically connected with the circuit board;
the bottom of the lens is provided with a light source cavity and a socket groove, the lens is connected to the circuit board, the light source cavity covers the outside of the light source, and the socket is located in the socket groove.
According to the lamp strip structure, a first reflector plate is arranged in the socket groove and is adhered to the inner surface of the socket groove;
or the inner surface of the socket groove is coated with a reflecting layer, and the reflecting layer is a mixture of OCA optical cement and a foaming agent.
According to the lamp strip structure, the round corner part is arranged in the socket groove.
According to the lamp strip structure, the size of the socket groove is larger than the external dimension of the socket, and the socket groove are installed in a clearance fit mode.
According to the lamp strip structure, the light source cavity is arranged in the middle of the bottom of the lens, the socket groove extends to be arranged at the edge of the lens, and the distance between the light source cavity and the socket groove is not less than 5mm.
According to the lamp strip structure, the bottom of the lens is also provided with a positioning pin, and the lens is connected to the circuit board through the positioning pin.
According to the lamp strip structure, the light source is an LED lamp bead.
On the other hand, the utility model also provides a backlight module, including foretell lamp strip structure.
According to the backlight module, the backlight module comprises:
the light bar structure is arranged on the back plate;
the second reflector plate is laid on the back plate and the circuit board;
a diffusion plate disposed at the front end of the back plate,
the liquid crystal panel is arranged at the front end of the diffusion plate.
According to the backlight module, the second reflector plate on the circuit board is provided with the hole, and the light source, the socket and the lens are all located in the hole.
The utility model provides a lamp strip structure and backlight unit's beneficial effect lies in at least:
the utility model provides a lamp strip structure and backlight unit is provided with the socket groove in the bottom of lens, its simple structure, and processing is convenient, then sets up the socket in the socket groove, and the light energy that the light source sees through lens outgoing can not pass through the socket, also means the light energy that the light source passes through lens outgoing directly reaches the diffuser plate through the reflection of second reflector plate and forms the effective light energy of system, thereby can not appear black group and the problem of off colour on the display screen on the liquid crystal display panel; and because the bottom of the lens is provided with the socket groove, the circuit board does not need to be lengthened, and the cost is saved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of a backlight module in the prior art
Fig. 2 is a schematic structural view of a light bar structure provided in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.
Wherein, in the figures, the various reference numbers:
1000. a backlight module; 100. a light bar structure; 110. a circuit board; 120. a light source; 130. a socket; 140. a lens; 141. a light source cavity; 142. a socket recess; 1421. a rounded corner portion; 150. a first reflective sheet; 200. a back plate; 300. a second reflective sheet; 310. a hole; 400. a diffusion plate; 500. a liquid crystal panel.
Detailed Description
In order to make the technical problem, technical solution and beneficial effects to be solved by the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
Referring to fig. 2, the present embodiment provides a light bar structure 100, including: a circuit board 110; the light source 120 is arranged on the circuit board 110 and electrically connected with the circuit board 110; the socket 130 is arranged on the circuit board 110 and is electrically connected with the circuit board 110; the lens 140, a light source cavity 141 and a socket recess 142 are disposed at the bottom of the lens 140, the lens 140 is connected to the circuit board 110, the light source cavity 141 is covered outside the light source 120, and the socket 130 is disposed in the socket recess 142.
The working principle of the light bar structure 100 provided by the embodiment is as follows:
in the light bar structure 100 of the present embodiment, the light source 120 and the socket 130 are mounted on the circuit board 110, and then the lens 140 is mounted on the circuit board 110, after the lens 140 is mounted, the light source cavity 141 disposed at the bottom of the lens 140 is covered outside the light source 120, and the socket 130 is located inside the socket recess 142, that is, the socket 130 is located at the bottom of the lens 140. When the light emitted from the light source 120 passes through the main optical path of the lens 140, the light does not pass through the socket 130, that is, the light energy emitted from the light source 120 passing through the lens 140 is directly reflected by the second reflective sheet 300 to reach the diffusion plate 400 to form the effective light energy of the system, so that the problems of black cluster and color cast do not occur on the display screen of the liquid crystal panel 500. Since the socket 130 is disposed below the lens 140, there is no need to consider the space between the socket 130 and the lens 140, and there is no need to design the circuit board 110 to be lengthened.
The beneficial effect of the light bar structure 100 that this embodiment provided lies in at least:
in the light bar structure 100 provided by this embodiment, the socket groove 142 is disposed at the bottom of the lens 140, the structure is simple, the processing is convenient, and then the socket 130 is disposed in the socket groove 142, so that the light energy emitted from the light source 120 through the lens 140 does not pass through the socket 130, that is, the light energy emitted from the light source 120 through the lens 140 is directly reflected by the second reflector 300 to reach the diffuser 400 to form the effective light energy of the system, so that the problems of black cluster and color cast do not occur on the display image on the liquid crystal panel 500; and because the socket groove 142 is arranged at the bottom of the lens 140, the circuit board 110 does not need to be lengthened, and the cost is saved.
In one embodiment, referring to fig. 2, a first reflection sheet 150 is disposed in the socket recess 142, and the first reflection sheet 150 is bonded to an inner surface of the socket recess 142. The first reflective sheet 150 is disposed to reflect light energy reaching the inner surface of the socket recess 142 back to the inside of the lens 140, thereby preventing the light energy from being leaked to cause loss and interference.
In another embodiment, the inner surface of the socket recess 142 is coated with a reflective layer, which is a mixture of OCA optical cement and a blowing agent. After the OCA optical cement and the foaming agent are mixed and heated, the reflection effect is achieved, the inner surface of the socket groove 142 is coated with a reflection layer formed by mixing the OCA optical cement and the foaming agent, light energy reaching the inner surface of the socket groove 142 can be reflected back to the inside of the lens 140, and loss and interference caused by light energy overflowing are prevented.
In one embodiment, referring to fig. 2, a rounded portion 1421 is disposed in the socket recess 142. The rounded portion 1421 facilitates the adhesion of the first reflective sheet 150 or the coating of the reflective layer, and the light can be effectively reflected back to the inside of the lens 140 by the rounded portion 1421.
In one embodiment, referring to fig. 2, the size of the socket recess 142 is larger than the external size of the socket 130, and the socket 130 is installed in a clearance fit with the socket recess 142.
The size of the socket recess 142 is set to be larger than the external size of the socket 130, so that the assembly of the light bar structure 100 is facilitated, and when the socket 130 is disposed in the socket recess 142, a gap h1 is formed between the socket 130 and the socket recess 142, so as to avoid mutual collision during installation.
Optionally, a gap h1 between the socket 130 and the socket groove 142 is not less than 1mm.
Optionally, the gap h1 between the socket 130 and the socket groove 142 is 1mm.
Optionally, the gap h1 between the socket 130 and the socket groove 142 is 2mm.
It should be understood that the gap h1 between the socket 130 and the socket groove 142 is not limited to the above case, and may be other cases, and is not limited herein.
In one embodiment, referring to fig. 2, the light source cavity 141 is disposed in the middle of the bottom of the lens 140, the socket recess 142 extends to the edge of the lens 140, and the distance h2 between the light source cavity 141 and the socket recess 142 is not less than 5mm.
The light source cavity 141 is disposed in the middle of the bottom of the lens 140, so as to ensure the uniformity of the light emitted from the light source 120 in the main light emitting direction designed by the lens 140. The socket groove 142 extends to the edge of the bottom of the lens 140, and the formed socket groove 142 has a simple structure, is easy to process and is convenient to assemble. And the distance h2 between the light source cavity 141 and the socket groove 142 is set to be not less than 5mm, so that the main light emitting path of the lens 140 is not affected by the arrangement of the socket groove 142.
Optionally, the distance h2 between the light source cavity 141 and the socket recess 142 is 5mm.
Optionally, the distance h2 between the light source cavity 141 and the socket recess 142 is 6mm.
It should be understood that the distance h2 between the light source cavity 141 and the socket recess 142 is not limited to the above, and may be other situations, which are not limited herein.
In one embodiment, the bottom of the lens 140 is further provided with a positioning pin (not shown, the same applies below), and the lens 140 is connected to the circuit board 110 through the positioning pin. The positioning pins are arranged to facilitate stable mounting of the lens 140 on the circuit board 110.
Optionally, the number of the positioning legs is 1.
Optionally, the number of the positioning pins is multiple, and the multiple positioning pins are arranged at even intervals.
Optionally, the number of the positioning pins is 4 to 6.
Optionally, the number of the positioning pins is 4, and the 4 positioning pins are arranged at regular intervals.
Optionally, the number of the positioning pins is 5, and the 5 positioning pins are arranged at equal intervals.
Optionally, the number of the positioning pins is 6, and the 6 positioning pins are arranged at regular intervals.
It should be understood that the number and arrangement of the positioning pins are not limited to the above-mentioned cases, and other cases are also possible, and are not limited herein.
In one embodiment, the light source 120 is an LED light bead.
Referring to fig. 3, the present embodiment further provides a backlight module 1000 including the light bar structure 100. Since light bar structure 100 has been described above in detail, it is not repeated here.
In one embodiment, referring to fig. 3, the backlight module 1000 includes: the back plate 200, the light bar structure 100 is arranged on the back plate 200; a second reflective sheet 300, wherein the second reflective sheet 300 is laid on the back plate 200 and the circuit board 110; a diffusion plate 400, wherein the diffusion plate 400 is disposed at the front end of the back plate 200, and a liquid crystal panel 500, and the liquid crystal panel 500 is disposed at the front end of the diffusion plate 400. The light energy emitted from the light source 120 through the lens 140 is directly reflected by the second reflective sheet 300 to reach the diffusion plate 400 to form system effective light energy, and is displayed by the liquid crystal panel 500.
In one embodiment, referring to fig. 3, the second reflector 300 on the circuit board 110 has a hole 310, and the light source 120, the socket 130 and the lens 140 are all located in the hole 310. The provision of the hole 310 facilitates the installation of the light source 120, the socket 130 and the lens 140.
Optionally, referring to fig. 2, the size of the hole 310 is larger than that of the lens 140, that is, the second reflective sheet 300 around the hole 310 is disposed at a gap with the lens 140, and the gap h3 is not less than 1mm.
Optionally, a gap h3 between the second reflective sheet 300 and the lens 140 around the hole 310 is 1mm. Optionally, the gap h3 between the second reflective sheet 300 and the lens 140 around the hole 310 is 2mm. It should be understood that the gap h3 between the second reflective sheet 300 and the lens 140 around the hole 310 is not limited to the above case, and may be other cases, and is not limited herein.
In summary, the present embodiment provides a light bar structure 100, including: a circuit board 110; the light source 120 is arranged on the circuit board 110 and electrically connected with the circuit board 110; the socket 130 is arranged on the circuit board 110, and the socket 130 is electrically connected with the circuit board 110; a lens 140, a light source cavity 141 and a socket recess 142 are disposed at the bottom of the lens 140, the lens 140 is connected to the circuit board 110, the light source cavity 141 covers the light source 120, and the socket 130 is located in the socket recess 142. The present embodiment further provides a backlight module 1000 including the light bar structure 100. In the light bar structure 100 and the backlight module 1000 provided by this embodiment, the socket groove 142 is disposed at the bottom of the lens 140, which is simple in structure and convenient to process, and then the socket 130 is disposed in the socket groove 142, so that the light energy emitted from the light source 120 through the lens 140 does not pass through the socket 130, that is, the light energy emitted from the light source 120 through the lens 140 is directly reflected by the second reflector 300 to reach the diffuser 400 to form the effective light energy of the system, and thus the problems of black cluster and color cast do not occur on the display screen on the liquid crystal panel 500; and because the socket groove 142 is arranged at the bottom of the lens 140, the circuit board 110 does not need to be lengthened, and the cost is saved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A light bar structure, comprising:
a circuit board;
the light source is arranged on the circuit board and is electrically connected with the circuit board;
the socket is arranged on the circuit board and is electrically connected with the circuit board;
the bottom of the lens is provided with a light source cavity and a socket groove, the lens is connected to the circuit board, the light source cavity covers the outside of the light source, and the socket is located in the socket groove.
2. The light bar structure of claim 1, wherein a first reflector is disposed in the socket recess and bonded to an inner surface of the socket recess;
alternatively, the inner surface of the socket recess is coated with a reflective layer.
3. The light bar structure of claim 2, wherein a rounded corner is provided in the socket recess.
4. The light bar structure of claim 1, wherein the socket recess is sized larger than the receptacle outer dimension, the receptacle being mounted in a clearance fit with the socket recess.
5. The light bar structure of claim 1, wherein the light source cavity is disposed in the middle of the bottom of the lens, the socket groove extends to the edge of the lens, and the distance between the light source cavity and the socket groove is not less than 5mm.
6. The light bar structure of claim 1, wherein the bottom of the lens is further provided with a positioning pin, and the lens is connected to the circuit board through the positioning pin.
7. The light bar structure of claim 1, wherein the light source is an LED light bead.
8. A backlight module, comprising the light bar structure of any one of claims 1 to 7.
9. A backlight module according to claim 8, comprising:
the light bar structure is arranged on the back plate;
the second reflector plate is laid on the back plate and the circuit board;
a diffusion plate disposed at the front end of the back plate,
the liquid crystal panel is arranged at the front end of the diffusion plate.
10. The backlight module as claimed in claim 9, wherein the second reflector is disposed on the circuit board and has a hole, and the light source, the socket and the lens are disposed in the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220884113.2U CN218446294U (en) | 2022-04-15 | 2022-04-15 | Lamp strip structure and backlight unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220884113.2U CN218446294U (en) | 2022-04-15 | 2022-04-15 | Lamp strip structure and backlight unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218446294U true CN218446294U (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220884113.2U Active CN218446294U (en) | 2022-04-15 | 2022-04-15 | Lamp strip structure and backlight unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218446294U (en) |
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2022
- 2022-04-15 CN CN202220884113.2U patent/CN218446294U/en active Active
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