A key light guide cover and a light guide key assembly

Abstract

The utility model provides a kind of key light guide cover and light guide key assembly, key light guide cover includes base body, pressure-bearing body and support body, support body is fixedly connected between base body and pressure-bearing body, and the relative height between the front of pressure-bearing body and the front of base body is greater than zero, the front of pressure-bearing body includes light transmission area and backlight area, and the thickness of backlight area is greater than the thickness of light transmission area.Light guide key assembly includes aforementioned key light guide cover and light source.The utility model discloses technical scheme, because the thickness of backlight area is greater than the thickness of light transmission area, the light propagation path of light source generated light is shorter in light transmission area, and the intensity and brightness loss of light are lower, so as to enhance light transmission area brightness effect, and the light propagation path of light source generated light is longer in backlight area, so that the intensity and brightness of reflected light are weakened, the interference effect of reflected light and light propagation in light transmission area is reduced, light is reduced, so that user observes correct character or pattern from light transmission area, and misoperation to key is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of silicone button technology, and in particular relates to a button light guide cover and a light guide button assembly. Background Technology

[0002] Buttons are a common type of product in the field of electronic control today, with a wide range of applications and are used everywhere in our lives. However, with the advancement of technology, buttons with only a single control function can no longer meet the needs of the public. Because the environment is relatively dark at night, it is difficult to see the function symbols on the buttons, which makes it unclear what each button is for, thus affecting the usability. Light guide button components have emerged to address this need.

[0003] In the prior art, patent document with publication number "CN207993741U" discloses a silicone translucent button assembly, including a silicone button body and a corresponding DOME sheet. The outer surface of the silicone button body is opaque. The silicone button body includes a button base and at least one button. The button has a light-transmitting portion laser-etched on it. A light-transmitting silicone button support block is provided inside the button. A button contact is provided at the bottom of the silicone button support block. The bottom surface of the button contact is at the same height as the bottom surface of the button base. A support portion is provided inside the silicone button body. The DOME sheet is fixed to the bottom of the silicone button body. The DOME sheet has information contact points corresponding to the positions of the button contact points. The DOME sheet also has multiple through holes. The through holes are located next to the information contact points and offset from the support portion. A PCB board is provided below the DOME sheet. An LED light corresponding to the position of the through hole is provided on the PCB board. This patented technical solution improves the structural stability of the button assembly.

[0004] However, existing light guide button assemblies generally include a button light guide cover and a light source, typically using LEDs as the light source. To reduce the manufacturing cost of the button light guide cover, it is usually made of silicone rubber in one piece, with a uniform thickness throughout. The silicone rubber surface is then painted, dividing the surface of the button light guide cover into a backlight area and a light-transmitting area. Light emitted from the light source is transmitted through the light-transmitting area and reflected back through the backlight area. However, light has wave-particle duality. Because the button light guide cover has a uniform thickness throughout, the light after diffuse reflection in the backlight area will interfere with the light transmitted through the light-transmitting area, causing light crosstalk. This makes the outline of the button and the outer area of ​​the light-transmitting area brighter, affecting the user's visual perception and even leading to misoperation. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a button light guide cover and a light guide button assembly.

[0006] This utility model is achieved through the following technical solution.

[0007] This utility model provides a button light guide cover, including a base, a pressure bearing body, and a support body. The support body is fixedly connected between the base and the pressure bearing body, and the relative height between the front surface of the pressure bearing body and the front surface of the base is greater than zero. The front surface of the pressure bearing body includes a light-transmitting area and a backlighting area, and the thickness of the backlighting area is greater than the thickness of the light-transmitting area.

[0008] The front of the light-transmitting area is flush with the front of the backlight area, and the back of the pressure-bearing body is provided with a light-transmitting groove, the position and size of which correspond to the light-transmitting area.

[0009] The thickness of the substrate is greater than the thickness of the bearing body.

[0010] The thickness of the pressure-bearing body is greater than the thickness of the support body.

[0011] The thickness of the substrate is 1 mm to 5 mm.

[0012] The thickness of the support body is 0.5 mm to 2 mm.

[0013] The thickness of the pressure-bearing body is 1 mm to 3 mm.

[0014] The thickness of the light-transmitting area is 0.5 mm to 1 mm.

[0015] A light-guiding button assembly includes a light source and a button light guide cover, the button light guide cover covering the light source, and the front of the pressure-bearing body is sprayed with a light-transmitting paint and a backlight paint, the spraying range of the light-transmitting paint corresponding to the light-transmitting area, and the spraying range of the backlight paint corresponding to the backlight area.

[0016] The color of the translucent paint is the same as the color of the light source.

[0017] The beneficial effects of this utility model are as follows: Using the technical solution of this utility model, since the thickness of the backlight area is greater than the thickness of the light-transmitting area, the light generated by the light source travels a shorter path in the light-transmitting area, resulting in lower intensity and brightness loss. This enhances the brightness effect of the light-transmitting area, improves the user's visual experience, and helps prevent accidental operation. Conversely, the longer path of the light generated by the light source in the backlight area increases the intensity and brightness loss of the reflected light, further weakening both the intensity and brightness of the reflected light. This reduces the interference effect between the reflected light and the light propagating in the light-transmitting area, minimizing light leakage and allowing the user to observe the correct text or pattern from the light-transmitting area, thus avoiding accidental button operation. Attached Figure Description

[0018] Figure 1 This is a front view of the button light guide cover of this utility model;

[0019] Figure 2This is a top view of the button light guide cover of this utility model;

[0020] Figure 3 This is a utility model Figure 1 A magnified view of a section at point I;

[0021] Figure 4 This is the front view of the light guide button assembly of this utility model.

[0022] In the diagram: 1-Button light guide cover, 2-Base, 3-Pressure bearing, 4-Support, 5-Light transmission area, 6-Backlight area, 7-Light transmission groove, 8-Light source. Detailed Implementation

[0023] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0024] like Figures 1 to 4 As shown, this utility model provides a button light guide cover 1, including a base 2, a pressure bearing 3 and a support 4. The support 4 is fixed between the base 2 and the pressure bearing 3, and the relative height between the front of the pressure bearing 3 and the front of the base 2 is greater than zero. The front of the pressure bearing 3 includes a light-transmitting area 5 and a backlight area 6, and the thickness of the backlight area 6 is greater than the thickness of the light-transmitting area 5.

[0025] By employing the technical solution of this utility model, since the thickness of the backlight area is greater than that of the light-transmitting area, the light generated by the light source travels a shorter path in the light-transmitting area, resulting in lower intensity and brightness loss. This enhances the brightness effect of the light-transmitting area, improves the visual effect for users, and helps prevent accidental operation. Conversely, the light generated by the light source travels a longer path in the backlight area, increasing the intensity and brightness loss of reflected light. This, in turn, weakens both the intensity and brightness of reflected light, reducing the interference effect between reflected light and light propagating in the light-transmitting area, and reducing light crosstalk. This allows users to observe the correct text or pattern from the light-transmitting area, avoiding accidental button operation.

[0026] Specifically, the front of the light-transmitting area 5 is flush with the front of the backlighting area 6, and the back of the pressure-bearing body 3 is provided with a light-transmitting groove 7, the position and size of which correspond to the light-transmitting area 5. Preferably, the thickness of the base 2 is greater than the thickness of the pressure-bearing body 3. The thickness of the pressure-bearing body 3 is greater than the thickness of the support body 4. The thickness of the base 2 is 1mm to 5mm. The thickness of the support body 4 is 0.5mm to 2mm. The thickness of the pressure-bearing body 3 is 1mm to 3mm. The thickness of the light-transmitting area 5 is 0.5mm to 1mm.

[0027] In addition, this utility model also provides a light guide button assembly, including a light source 8 and a button light guide cover as described above. The button light guide cover 1 covers the light source 8. The front of the pressure body 3 is sprayed with a light-transmitting paint and a backlight paint. The spraying range of the light-transmitting paint corresponds to the light-transmitting area 5, and the spraying range of the backlight paint corresponds to the backlight area 6.

[0028] Specifically, the color of the translucent paint is the same as the color of light source 8. The color of the backlight paint is opposite to the color of light source 8.

Claims

1. A button light guide cover, characterized in that: It includes a base (2), a pressure-bearing body (3) and a support body (4). The support body (4) is fixed between the base (2) and the pressure-bearing body (3). The relative height between the front of the pressure-bearing body (3) and the front of the base (2) is greater than zero. The front of the pressure-bearing body (3) includes a light-transmitting area (5) and a backlighting area (6). The thickness of the backlighting area (6) is greater than the thickness of the light-transmitting area (5).

2. The button light guide cover as described in claim 1, characterized in that: The front of the light-transmitting area (5) is flush with the front of the backlight area (6), and the back of the pressure-bearing body (3) is provided with a light-transmitting groove (7), the position and size of which correspond to the light-transmitting area (5).

3. The button light guide cover as described in claim 1, characterized in that: The thickness of the substrate (2) is greater than the thickness of the pressure-bearing body (3).

4. The button light guide cover as described in claim 1, characterized in that: The thickness of the pressure-bearing body (3) is greater than the thickness of the support body (4).

5. The button light guide cover as described in claim 1 or 3, characterized in that: The thickness of the substrate (2) is 1 mm to 5 mm.

6. The button light guide cover as described in claim 1 or 4, characterized in that: The thickness of the support (4) is 0.5 mm to 2 mm.

7. The button light guide cover as described in any one of claims 1 to 4, characterized in that: The thickness of the pressure-bearing body (3) is 1 mm to 3 mm.

8. The button light guide cover as described in claim 1 or 3, characterized in that: The thickness of the light-transmitting area (5) is 0.5 mm to 1 mm.

9. A light-guiding button assembly, characterized in that: Includes a light source (8) and a key light guide cover as described in any one of claims 1 to 8, wherein the key light guide cover (1) covers the light source (8), and the front of the pressure body (3) is coated with a light-transmitting paint and a backlight paint, wherein the spraying range of the light-transmitting paint corresponds to the light-transmitting area (5), and the spraying range of the backlight paint corresponds to the backlight area (6).

10. The light guide button assembly as described in claim 9, characterized in that: The color of the translucent paint is the same as the color of the light source (8).

Images