Backlight device of lamp display panel
By designing a backlight device that includes display glass, face cover, touch circuit board, light blocking cotton and display circuit board components, the problem that traditional backlight devices cannot achieve independent light control on buttons is solved, and a richer and more personalized lighting effect is achieved.
Patent Information
- Application Number
- CN202421528552.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-29
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-06-29
AI Technical Summary
Traditional backlight devices have a single function, and cannot realize the advanced function of only the lighting effects of the key when the user touches a specific key, while the lighting effects of the other keys remain unchanged.
A backlight device for display panel of lamps is designed, including display glass, face cover, touch circuit board, light blocking cotton and display circuit board components. By providing a light-through hole and a sensing area on the touch circuit board, and setting a colorful light-emitting area in the display circuit board assembly, independent lighting control of the key state is achieved.
It realizes an advanced function that when a user touches a specific key, only the lighting effect of the key changes, while the lighting effect of the other keys remains unchanged, enhancing the personalization and intuitive operation of the backlight device.
Smart Images
Figure CN222925444U_ABST
Abstract
Description
Technical Field
[0001] The utility model mainly relates to the field of stage lights, in particular to a backlight device for a display panel of a lamp. Background Art
[0002] In recent years, the diversity of electronic devices has been significantly improved. In particular, backlight devices, as input devices that can meet the intuitive operations of users, have attracted more and more attention. A backlight device is a device that detects the touch position of a user on a display screen and is also responsible for performing comprehensive control of an electronic device.
[0003] Traditional backlight devices have relatively single functions, only providing a unified backlight effect for all keys without personalized differences. When inputting instructions, only overall lighting effects can be achieved, and the advanced function of changing the lighting effect of only a specific key while keeping the lighting effects of other keys unchanged when the user touches a certain key cannot be realized. Summary of the Invention
[0004] A backlight device for a display panel of a lamp provided by the utility model effectively solves the above problems.
[0005] The technical solution adopted by the utility model is as follows:
[0006] A backlight device for a display panel of a lamp sequentially includes a display glass located in an opening groove, a face cover provided with the opening groove, a touch circuit board in the opening groove for sensing external touch inputs, a light-blocking cotton, and a display circuit board assembly; the circuit board assembly includes a display screen and a plurality of color-emitting regions arranged at intervals below the display screen; the touch circuit board is provided with a plurality of light-passing holes one adapted to the plurality of color-emitting regions arranged at intervals; the light-blocking cotton for preventing the plurality of color-emitting regions arranged at intervals from mutually interfering with light is located between the touch circuit board and the color-emitting regions.
[0007] As a further improvement of the utility model, the opening groove is provided on the outer surface of the face cover.
[0008] As a further improvement of the utility model, the depth of the opening groove is slightly larger than the thickness of the display glass.
[0009] As a further improvement of the utility model, the display glass is provided with a touch key area having the same number and corresponding positions as the color-emitting regions.
[0010] As a further improvement of the utility model, the color-emitting regions include a plurality of LED lamp beads of different colors.
[0011] As a further improvement of the utility model, each color-emitting region is configured to illuminate its corresponding touch key area.
[0012] As a further improvement of the present utility model, the light-blocking cotton is a cuboid, and is provided with light-passing holes two having the same number and being coaxial with the light-passing holes one, and the size of the light-passing holes two is larger than that of the light-passing holes one.
[0013] As a further improvement of the present utility model, the touch circuit board further includes an induction area, and the induction area is located at the outer edge of the light-passing hole.
[0014] As a further improvement of the present utility model, the induction area is a rectangular frame.
[0015] As a further improvement of the present utility model, one side of the touch circuit board is closely attached to the display glass, and the other side is closely attached to the light-blocking cotton; one side of the light-blocking cotton is closely attached to the front surface of the colorful light-emitting area. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is the front three-dimensional exploded view of the present utility model.
[0017] Figure 2 is the back three-dimensional exploded view of the present utility model.
[0018] Figure 3 is the front view of the present utility model.
[0019] Figure 4 is Figure 3 the cross-sectional view in the direction of A-A in
[0020] In the figure: backlight device 10; display glass 1; touch key area 11; display area 12; touch circuit board 2; light-passing hole one 21; induction area 22; light-blocking cotton 3; light-passing hole two 31; display circuit board assembly 4; display screen 41; colorful light-emitting area 42; LED lamp beads 421; face cover 5; opening groove 51; outer surface 52; outer circular surface 521. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0021] Combined with the attached Figure 1 、attached Figure 2 and attached Figure 4A backlight device for a lamp display panel comprises, in order, a display glass 1 located in an opening groove 51, a cover 5 provided with the opening groove 51, a touch circuit board 2 for sensing external touch input, light-blocking cotton 3, and a display circuit board assembly 4; the display circuit board assembly 4 comprises a display screen 41 and a plurality of spaced-apart multi-colored light-emitting areas 42 located below the display screen; the touch circuit board 2 is provided with a plurality of light-through holes 21 adapted to the plurality of spaced-apart multi-colored light-emitting areas 42; the light-blocking cotton 3 for preventing the plurality of spaced-apart multi-colored light-emitting areas 42 from mutually transmitting light is located between the touch circuit board 2 and the multi-colored light-emitting areas 42. The opening groove 51 and the display glass 1 are both rectangular, and the display glass 1 is pasted in the opening groove 51 of the cover 5 by dispensing glue; the touch circuit board 2 is an L-shaped flat plate, installed on the back of the display glass 1; the light-blocking cotton 3 is installed on the back of the touch circuit board 2, and the display circuit board assembly 4 is installed immediately after the light-blocking cotton 3. The display screen 41 is located above the light-blocking cotton 3, and the distance between the display screen 41 and the display glass 1 is small. The light-through hole 1 21 is rectangular, and the plurality of light-through holes 1 21 correspond one by one to the plurality of multi-colored light-emitting areas 42. The light-shielding cotton 3 covers the multi-colored light-emitting areas 42. The beneficial effect of this embodiment is that the multi-colored light-emitting areas 42 of the display circuit board assembly 4 can make the light effects displayed on the backlight device 10 richer; the light-through hole 1 21 on the touch circuit board 2 allows the touch circuit board 2 to be installed in front of the multi-colored light-emitting areas and will not block the light emitted to the display glass 1; while ensuring the backlight effect of the backlight device 10, the touch circuit board 2 is placed in front.
[0022] As a new implementation method, combined with the Figure 1 , the opening groove 51 is provided on the outer surface 52 of the cover 5. The cover 5 is a hollow cylinder with an opening at one end, and the opening groove 51 is provided at the end of the cover 5 provided with the outer cylindrical surface 521; the display glass 1 is embeddedly installed in the opening groove 51. The beneficial effect of this embodiment is that the display glass 1 is embeddedly installed, which facilitates the installation or removal of the backlight device 10.
[0023] As a new implementation method, combined with the Figure 4 , the depth of the opening groove 51 is slightly larger than the thickness of the display glass 1. The opening groove 51 is a rectangular groove body, and the display glass 1 is a rectangular flat plate. The size of the display glass 1 is adapted to the size of the opening groove 51. The back of the display glass 1 is tightly attached to the opening groove 51 by dispensing glue, and the opening groove 51 reserves a space for dispensing glue. Preferably, the depth of the opening groove is about 0.2 mm greater than the thickness of the display glass. The beneficial effect of this embodiment is that when the display glass 1 is installed in the opening groove 51, the outer surface of the display glass 1 and the outer circular surface 521 of the cover 5 tend to the same plane; so that the display glass 1 and the cover 5 form a whole, which looks more simple and beautiful.
[0024] As a new implementation method, combined with theFigure 1 , attached Figure 3 and attached Figure 4 , it is shown that the display glass 1 is provided with a touch key area 11 having the same number as and corresponding to the colorful light-emitting areas 42 one by one in position; each colorful light-emitting area 42 is configured to illuminate its corresponding touch key area 11. The display glass 1 is provided with a display area 12 corresponding to the display screen 41, and the touch key area 11 is located below the display area 12. The touch key area 11 on the display glass 1 includes a rectangular outer frame and characters, wherein the background color of the outer frame and the characters is a background color with better light transmittance; except for the characters, the background color of the area surrounded by the outer frame is black. The colorful light-emitting areas 42 are located below the display screen 41 and are installed on the back of the light-blocking cotton 3. When the touch key area of the traditional backlight device is in the triggered state or the non-triggered state, only the overall lighting effect can be displayed. Optionally, when the touch key area 11 of the present utility model is in different states, different lighting effects will be presented. For example, when the touch key area 11 is in the non-triggered state, all the colorful light-emitting areas 42 do not light up or only light up the same color; when the touch key area 11 is in the triggered state, the colorful light-emitting areas 42 corresponding to the triggered touch key area 11 selectively emit light independently or change to different colors of light, and the colorful light-emitting areas 42 corresponding to the other non-triggered touch key areas 11 do not emit light or the lighting color remains unchanged. It can be understood that when the touch key area 11 is in different states, there can also be other lighting transformation effects. For example, when the touch key area 11 is in the non-triggered state, the lighting state of the colorful light-emitting areas 42 is a breathing light mode of several different colors. The beneficial effect of this embodiment is that it can more intuitively display the pressed touch key area 11, and when the touch key area 11 is in the triggered state, the advanced function that when the user touches a specific touch key area 11, only the lighting effect of that touch key area 11 changes while the lighting effects of the other touch key areas 11 remain unchanged can be realized.
[0025] Based on the above content, in this embodiment, in combination with attached Figure 1, the colorful light-emitting area 42 includes a number of LED lamp beads 421 of different colors. The colorful light-emitting area 42 is rectangular, and three LED lamp beads 421 of different colors are distributed in a triangular shape around the center of the rectangle; the colors of the LED lamp beads 421 are white, blue, and green respectively. When different trigger instructions are input, the colorful light-emitting area 42 changes to different colors according to the instructions; for example, when the touch button area 11 is in a non-triggered state, the multiple colorful light-emitting areas 42 emit light of the same color, and the light displayed on the touch button area 11 is also of the same color; when the touch button area 11 is in a triggered state, the colorful light-emitting area 42 corresponding to the triggered touch button area 11 changes to emit light of other colors, and the color of the corresponding touch button area 11 also changes accordingly, and so on. It can be understood that the colorful light-emitting area 42 can also be other LED lamp beads 421 with different numbers and different colors, and there can also be other different light-emitting effects when trigger instructions are input. The beneficial effect of this embodiment is that when the touch button area 11 of the backlight device 10 is in different states, the corresponding colorful light-emitting area 42 emits light of different colors, and the transformation of the lights is more abundant.
[0026] As a new embodiment, in combination with the attached Figure 1 and the attached Figure 2 , the light-blocking cotton 3 is a cuboid, and it is provided with light-passing holes two 31 having the same number and coaxial with the light-passing holes one 21, and the size of the light-passing holes two 31 is larger than that of the light-passing holes one 21. Both the light-passing holes two 31 and the colorful light-emitting area 42 are rectangular and have the same size; the light-passing holes one 21 are the same size as the touch button area 11, and the size of the light-passing holes two 31 is larger than that of the light-passing holes one 21, so that the light emitted by the colorful light-emitting area 42 is accurately irradiated within the touch button area 11. The beneficial effect of this embodiment is that the light-blocking cotton 3 is located in front of the colorful light-emitting area 42 to prevent the light emitted by two adjacent colorful light-emitting areas 42 from interfering with each other.
[0027] As a new embodiment, in combination with the attached Figure 1 , the touch circuit board 2 also includes an induction area 22, and the induction area 22 is located at the outer edge of the light-passing holes one 21. The touch circuit board 2 is provided with a plurality of light-passing holes one 21, and the light-passing holes one 21 correspond to the touch button areas 11 one by one. The touch circuit board of the traditional backlight device does not adopt the hollow design of the light-passing holes, and the touch circuit board is installed behind the light guide plate provided with a light source. The touch circuit board 2 of the present utility model adopts the hollow design of the light-passing holes one 21, and the touch circuit board 2 is placed in front; making it located between the colorful light-emitting area 42 and the display glass 1, so that the induction area 22 is closer to the display glass 1. The beneficial effect of this embodiment is that the touch circuit board 2 with a hollow design is adopted, and when the user inputs a touch instruction in the touch button area opposite to the hollow light-passing hole one, the induction of the corresponding touch button area 11 is also very sensitive.
[0028] Based on the above, in this embodiment, in combination with the attached Figure 1 , the sensing area 22 is a rectangular frame. The touch key area 11 is also rectangular, and the sensing range of the sensing area 22 is slightly larger than the outer frame of the touch key area 11; the sensing area 22 is located between the touch circuit board 2 and the display glass 1 and is in close contact with the display glass 1, making the sensing effect of the backlight device 10 more sensitive. The beneficial effect of this embodiment is that the sensing range is slightly larger than that of the touch key area 11, which not only increases the sensing range of the touch key area 11; moreover, compared with the traditional backlight device that can only sense the central area of the touch key area, the sensing range of the present invention includes the entire touch key area 11. That is, pressing the edge of the touch key area 11 can also trigger the corresponding lighting effect.
[0029] Based on the above, in this embodiment, in combination with the attached Figure 1 and the attached Figure 4 , one side of the touch circuit board 2 is in close contact with the display glass 1, and the other side is in close contact with the light-blocking cotton 3; one side of the light-blocking cotton 3 is in close contact with the front surface of the colorful light-emitting area 42. A plurality of touch key areas 11 are provided on the display glass 1, which are in one-to-one correspondence and coaxial with the light-passing holes one 21 on the touch circuit board 2 and the light-passing holes two 31 on the light-blocking cotton 3; and the light-blocking cotton 3 covers the colorful light-emitting area 42. The beneficial effect of this embodiment is that the close installation makes the structure of the backlight device 10 more compact and the volume smaller.
Claims
1. A backlight device for a lamp display panel, characterized in that , including an opening groove, and also including a display glass located in the opening groove, a surface cover provided with the opening groove, a touch circuit board for sensing external touch input, light-shielding cotton, and a display circuit board assembly in sequence; the display circuit board assembly includes a display screen and a plurality of spaced-apart colorful light-emitting areas located below the display screen; the touch circuit board is provided with a plurality of light-through holes adapted to the plurality of spaced-apart colorful light-emitting areas; the light-shielding cotton for preventing the plurality of spaced-apart colorful light-emitting areas from mutually transmitting light is located between the touch circuit board and the colorful light-emitting areas.
2. A lamp display panel backlight device according to claim 1, characterized in that: The opening groove is arranged on the outer surface of the surface cover.
3. The lamp display panel backlight device according to claim 1, characterized in that: The depth of the opening groove is slightly greater than the thickness of the display glass.
4. The lamp display panel backlight device according to claim 1, characterized in that: The display glass is provided with touch key areas having the same number as the multi-colored light-emitting areas and corresponding positions.
5. The lamp display panel backlight device according to claim 4, characterized in that: The colorful light-emitting area includes a plurality of LED lamp beads of different colors.
6. The lamp display panel backlight device according to claim 4, characterized in that: Each of the multi-colored light-emitting areas is configured to illuminate its corresponding touch key area.
7. The lamp display panel backlight device according to claim 1, characterized in that: The light-blocking cotton is a rectangular parallelepiped, and is provided with two light-through holes which are the same in number and coaxial with the first light-through hole, and the size of the second light-through hole is larger than that of the first light-through hole.
8. The lamp display panel backlight device according to claim 1, characterized in that: The touch circuit board also includes a sensing area, and the sensing area is located at the outer edge of the light through hole.
9. The lamp display panel backlight device according to claim 8, characterized in that: The sensing area is a rectangular frame.
10. The lamp display panel backlight device according to claim 1, characterized in that: One side of the touch circuit board is in close contact with the display glass, and the other side is in close contact with the light-shielding cotton; one side of the light-shielding cotton is in close contact with the front surface of the colorful light-emitting area.