Backlight source used on MINI host

Abstract

The utility model discloses a backlight used on a MINI host in the backlight field, which comprises a panel, a circuit board and a light guide plate, the circuit board and the light guide plate are both installed on the panel, the panel is provided with an outer groove, the middle part of the outer groove is provided with a protruding part, the circuit board and the light guide plate are installed inside the outer groove and are fixed through the protruding part, and the circuit board and the light guide plate are fixed through the protruding part. The light guide plate is located above the circuit board, a protruding annular strip is arranged in the middle of the light guide plate, the annular strip is distributed on the outer side of the protruding part, a plurality of lamp holes are formed in the light guide plate, the lamp holes are distributed in the periphery of the annular strip in a surrounding mode, the circuit board is connected with a plurality of LED lamps used for projecting light rays, and the LED lamps are arranged in the different lamp holes. A shading layer and a conductive cloth layer are sequentially adhered to one side of the light guide plate away from the circuit board. According to the backlight source, the reliability and the durability are remarkably improved, meanwhile, the uniformity of light rays is guaranteed, and a high-quality display effect is provided for mini electronic equipment such as MINI hosts.

Description

Technical Field

[0001] This utility model relates to the field of backlight technology, specifically a backlight for use on a MINI host. Background Technology

[0002] With the rapid development of technology, the demand for small electronic devices such as mini PCs is growing rapidly. These devices not only require high performance, but also a refined appearance and excellent display effects. As a crucial component of electronic devices, the performance and quality of the backlight directly impact the display effect and user experience.

[0003] Traditional backlight designs often employ a relatively simple structure, such as directly mounting LEDs onto a circuit board and then using a light guide plate to evenly distribute the light across the entire screen. However, this design has several drawbacks. First, because the LEDs are directly exposed on the circuit board, they not only occupy a significant amount of space but may also lead to uneven light distribution, affecting the display effect. Second, traditional backlight designs also have certain issues with connection stability and durability, making them prone to loosening or damage during use. Utility Model Content

[0004] In order to overcome the shortcomings of existing technical solutions, this utility model provides a backlight for MINI main unit, which can effectively solve the technical problems of unstable backlight structure and uneven light.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A backlight for a MINI main unit includes a panel, a circuit board, and a light guide plate. The circuit board and the light guide plate are both mounted on the panel. The panel has an outer groove with a protrusion in the center. The circuit board and the light guide plate are installed inside the outer groove and fixed by the protrusion. The light guide plate is located above the circuit board. The center of the light guide plate has a raised annular strip distributed outside the protrusion. The light guide plate has multiple lamp holes distributed around the annular strip. The circuit board is connected to multiple LEDs for projecting light, and the LEDs are disposed in different lamp holes. A light-shielding layer and a conductive cloth layer are sequentially adhered to the side of the light guide plate away from the circuit board.

[0007] Furthermore, the light-shielding layer is a black and white adhesive layer.

[0008] Furthermore, both the circuit board and the light guide plate are provided with limiting holes that match the protrusion.

[0009] Furthermore, a gold finger is connected to one side of the circuit board, and the panel has a notch for placing the gold finger.

[0010] Furthermore, the panel has an inner groove aligned with the protrusion on the side away from the outer groove, and grooves that pass through the side holes of the panel are formed on both sides of the inner groove. The bottom of the inner groove has several holes that communicate with the protrusion.

[0011] Furthermore, the panel has several mounting portions on the side away from the outer groove, and the mounting portions have through mounting holes.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) By opening an outer groove on the panel and setting a protrusion in the middle, the circuit board and the light guide plate can be cleverly installed and fixed inside the outer groove, which not only saves a lot of space and makes the overall structure of the backlight more compact, but also the protrusion enhances the connection stability between the circuit board and the light guide plate, ensuring the reliability and durability of the backlight during use.

[0014] (2) The raised annular strip in the middle of the light guide plate not only enhances the structural strength of the light guide plate, but also effectively guides the light emitted by the LED lamps, making them evenly distributed inside the light guide plate. Combined with the multiple lamp holes distributed around the annular strip, each LED lamp can exert its maximum luminous efficiency, thereby ensuring the overall uniformity of the backlight and avoiding visual discomfort caused by excessively strong or weak light. Attached Figure Description

[0015] Figure 1 This is an exploded view of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the back structure of the panel of this utility model;

[0017] Figure 3 This is a schematic diagram of the back structure of the circuit board of this utility model;

[0018] Figure 4 This is a front view schematic diagram of the connection between the panel, circuit board and light guide plate of this utility model;

[0019] Figure 5 This is a rear view diagram of the overall structure of this utility model;

[0020] Numbers in the figure:

[0021] 1-Panel, 2-Circuit board, 3-Light guide plate, 4-LED lamp, 5-Light shielding layer, 6-Conductive cloth layer, 7-Limiting hole, 8-Gold finger;

[0022] 101-External groove, 102-Protrusion, 103-Notch, 104-Inner groove, 105-Wire groove, 106-Hole, 107-Mounting part, 108-Mounting hole;

[0023] 301 - Circular strip, 302 - Lamp hole. Detailed Implementation

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] like Figure 1-5 As shown, this utility model provides a backlight for a MINI host. The backlight mainly includes three core components: panel 1, circuit board 2, and light guide plate 3. Circuit board 2 and light guide plate 3 are both mounted on panel 1. They are cleverly combined to achieve efficient light projection and stable structural support.

[0026] Panel 1 serves as the supporting base for the entire backlight, and its surface has an outer groove 101. The outer groove 101 is designed to accommodate the circuit board 2 and the light guide plate 3, providing them with a stable mounting environment. A protrusion 102 is provided in the center of the outer groove 101. The protrusion 102 not only strengthens the structural strength of panel 1, but more importantly, it serves as a fixing point for the circuit board 2 and the light guide plate 3. It is tightly connected to both through the limiting holes 7 in the center of the circuit board 2 and the light guide plate 3, ensuring the overall stability of the backlight. During assembly, the light guide plate 3 is fixed above the circuit board 2, primarily used to evenly distribute the light emitted by the LEDs 4 onto the entire surface of the backlight.

[0027] A raised annular strip 301 is provided in the middle of the light guide plate 3. This annular strip 301 not only enhances the structural strength of the light guide plate 3, but also guides the light. The annular strip 301 is distributed on the outer side of the raised portion 102, forming a co-fixing effect with the raised portion 102. In order to fix the position of the LED light 4, multiple lamp holes 302 are opened on the light guide plate 3, and these lamp holes 302 are distributed around the periphery of the annular strip 301. Each lamp hole 302 contains an LED light 4. This design can ensure that the light can be evenly projected onto all parts of the light guide plate 3.

[0028] On the side of the light guide plate 3 away from the circuit board 2, a light-shielding layer 5 and a conductive cloth layer 6 are sequentially attached. The light-shielding layer 5 is a black and white adhesive layer with good light-shielding performance and adhesion, while the conductive cloth layer 6 provides electromagnetic shielding protection to ensure the stable operation of the backlight.

[0029] The power supply and mounting of the LEDs 4 are primarily provided by the circuit board 2. The circuit board 2 is the control center of the backlight, responsible for providing power and control signals to the LEDs 4. The LEDs 4 are evenly distributed at different positions on the circuit board 2 to ensure that light is evenly projected onto the light guide plate 3. A gold finger 8 is also connected to one side of the circuit board 2; this is an important part for electrical connection with other circuit boards or components. Simultaneously, a notch 103 is provided on the panel 1 for placing the gold finger 8, ensuring that the gold finger 8 can extend smoothly and connect externally.

[0030] On the side of panel 1 away from the outer groove 101, there is also an inner groove 104 aligned with the protrusion 102. The inner groove 104 is mainly to provide additional space for cable arrangement and connection of corresponding control components. On both sides of the inner groove 104, there are also wire grooves 105, which are connected to the side through holes of panel 1, facilitating cable threading. At the bottom of the inner groove 104, there are also several holes 106 communicating with the protrusion 102. The holes 106 can be used to fix other fasteners, including control switches, to further enhance the structural stability of the backlight.

[0031] In addition, the panel 1 is provided with several mounting parts 107, each mounting part 107 having a through mounting hole 108, the purpose of which is to facilitate the installation of the entire backlight onto the MINI main unit.

[0032] Compared to traditional technologies, this solution cleverly installs and fixes the circuit board 2 and light guide plate 3 inside the outer groove 101 with a protrusion 102 in the middle of the panel 1. This not only saves space and makes the overall backlight structure more compact, but also enhances the connection stability between the circuit board 2 and the light guide plate 3, ensuring the reliability and durability of the backlight during use. Furthermore, the raised annular strip 301 in the middle of the light guide plate 3 not only strengthens the structure of the light guide plate 3, but also effectively guides the light emitted by the LEDs 4, ensuring uniform distribution within the light guide plate 3. Combined with the multiple lamp holes 302 surrounding the annular strip 301, each LED 4 can achieve its maximum luminous efficiency, thus ensuring the overall uniformity of the backlight and avoiding visual discomfort caused by excessively strong or weak light.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A backlight for a MINI main unit, comprising a panel, a circuit board, and a light guide plate, wherein the circuit board and the light guide plate are both mounted on the panel, characterized in that: The panel has an outer groove with a protrusion in the center. The circuit board and light guide plate are installed inside the outer groove and fixed by the protrusion. The light guide plate is located above the circuit board. The light guide plate has a raised annular strip in the center, which is distributed outside the protrusion. The light guide plate has multiple lamp holes distributed around the annular strip. The circuit board is connected to multiple LEDs for projecting light, and the LEDs are placed in different lamp holes. The side of the light guide plate away from the circuit board is sequentially covered with a light-shielding layer and a conductive cloth layer.

2. A backlight for a MINI main unit according to claim 1, characterized in that: The light-shielding layer is a black and white adhesive layer.

3. A backlight for a MINI main unit according to claim 1, characterized in that: Both the circuit board and the light guide plate are provided with limiting holes that match the protrusions.

4. A backlight for a MINI main unit according to claim 1, characterized in that: One side of the circuit board is connected to a gold finger, and the panel has a notch for placing the gold finger.

5. A backlight for a MINI main unit according to claim 1, characterized in that: The panel has an inner groove aligned with the protrusion on the side away from the outer groove. The inner groove has grooves on both sides that are through holes on the side of the panel. The bottom of the inner groove has several holes that communicate with the protrusion.

6. A backlight for a MINI main unit according to any one of claims 1-5, characterized in that: The panel has several mounting portions on the side away from the outer groove, and each mounting portion has a through mounting hole.

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