CN218387888U - Light guide key structure of conference loudspeaker - Google Patents
Light guide key structure of conference loudspeaker Download PDFInfo
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- CN218387888U CN218387888U CN202222316528.2U CN202222316528U CN218387888U CN 218387888 U CN218387888 U CN 218387888U CN 202222316528 U CN202222316528 U CN 202222316528U CN 218387888 U CN218387888 U CN 218387888U
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- circuit board
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model discloses a light guide key structure of a conference loudspeaker, which comprises an acoustic transmission mesh, a mesh shell, a touch induction flexible circuit board, a first reflecting sheet, a transparent light conductor, a second reflecting sheet, a light-emitting lamp bead, a PCBA circuit board and a touch induction control chip; the touch sensing flexible circuit board is positioned between the screen cloth shell and the transparent light guide body, the first light reflecting sheet is attached to the front surface of the transparent light guide body, the second light reflecting sheet is coated on the four side surfaces of the transparent light guide body, the front surface of the transparent light guide body is provided with a graphic symbol, and the graphic symbol penetrates through the first light reflecting sheet and is positioned in the first key graphic symbol profiling through hole of the screen cloth shell; the light-emitting lamp beads and the touch induction control chip are both arranged on the PCBA circuit board, and the light-emitting lamp beads extend into the reverse side of the transparent light guide body; borrow this, its leaded light efficiency is high, and luminance is high, and after the sound-transmitting screen cloth sheltered from its surface, the luminous figure of button showed clearly, and the printing opacity is regional even, separates the light well between the button, does not have the light problem of scurrying each other.
Description
Technical Field
The utility model belongs to the technical field of the conference speaker technique and specifically relates to indicate a conference speaker leaded light button structure.
Background
In the conference loudspeaker wrapped with the sound-transmitting mesh cloth in the market, after the surface of the transparent shell is sprayed with the light-tight coating, the graphic symbols of the light-transmitting touch keys below the sound-transmitting mesh cloth are engraved according to the shapes of the graphic symbols to expose the transparent shell below the sound-transmitting mesh cloth, or after the light-tight coating is printed on the surface of the transparent shell, the areas with the shapes of the graphic symbols are not coated, and the transparent shell below the graphic symbols is exposed. The light guide plate or the light emitting lamp is arranged under the transparent shell. The key touch induction structure is characterized in that a conductive foam is used between the transparent shell and the touch induction flexible circuit board to conduct a key touch induction area on the back of the transparent shell. The carving surface roughness of the structure has the advantages that a large amount of air exists between the luminous source and the light guide medium, the four side surfaces of the light guide medium are not provided with reflecting media, the light guide efficiency is low, the brightness of the graphic symbol-shaped area is dark, the key luminous graph is not clear after the sound-transmitting mesh cloth covers the surface of the graphic symbol-shaped area, the light-transmitting area is uneven, and the inner luminous points are easy to see. After the light emitting source in the conductive foam cotton area generates heat, hot air cannot be distributed, the temperature of the induction copper sheet on the touch induction flexible circuit board rises, and the induction capacitance value changes, so that the touch detection data drift. In addition, when the distance between the keys is short, light rays are refracted and reflected mutually within the thickness range of the transparent shell, and the key graphic symbols are easy to penetrate out of the light rays of the adjacent keys, so that the problem of light mixing is caused.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model discloses to the disappearance that prior art exists, its main objective provides a meeting speaker leaded light button structure, and it is low that it has solved meeting speaker radium carving button graphic symbol leaded light efficiency of parcel unvoiced sound screen cloth, and the light is scurried to easy reciprocal refraction between the luminous lamp pearl below the adjacent button, leads to button printing opacity symbol mixed light, and the cotton sealed lamp pearl of electrically conductive bubble leads to the response copper skin temperature rise on the touch-sensitive flexible circuit board, and the problem that the induction capacitance value changes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a light guide key structure of a conference loudspeaker comprises an acoustic transmission mesh, a mesh shell, a touch induction flexible circuit board, a first reflecting sheet, a transparent light guide body, a second reflecting sheet, a light emitting lamp bead, a PCBA circuit board and a touch induction control chip;
the sound-transmitting mesh cloth is adhered to the front side of the mesh cloth shell, the touch sensing flexible circuit board and the transparent light guide body are arranged on the back side of the mesh cloth shell, the touch sensing flexible circuit board is located between the mesh cloth shell and the transparent light guide body, the first light reflecting sheet is attached to the front side of the transparent light guide body, the second light reflecting sheet is coated on four side faces of the transparent light guide body, the front side of the transparent light guide body is provided with graphic symbols, the mesh cloth shell is provided with first key graphic symbol profiling through holes, and the graphic symbols penetrate through the first light reflecting sheet and are positioned in the first key graphic symbol profiling through holes; the light-emitting lamp beads and the touch induction control chip are both arranged on the PCBA circuit board and are respectively and electrically connected to the PCBA circuit board; the PCBA circuit board is arranged on the reverse side of the transparent light guide body; the light-emitting lamp beads extend into the reverse surface of the transparent light guide body and are arranged corresponding to the graphic symbols; touch-sensitive flexible circuit board electric connection is in PCBA circuit board.
As a preferred scheme, the touch-sensitive flexible circuit board is provided with a second key pattern symbol profiling through hole, the first reflector is provided with a third key pattern symbol profiling through hole, the second key pattern symbol profiling through hole and the third key pattern symbol profiling through hole are arranged in a right-to-right manner, and the pattern symbols sequentially pass through the third key pattern symbol profiling through hole and the second key pattern symbol profiling through hole and are positioned in the first key pattern symbol profiling through hole.
As a preferable scheme, the graphic symbol is provided with at least one, and correspondingly, the first key graphic symbol profiling through hole, the second key graphic symbol profiling through hole and the third key graphic symbol profiling through hole are all provided with at least one.
As a preferable scheme, at least two graphic symbols are arranged, and correspondingly, at least two of the first key graphic symbol profiling through hole, the second key graphic symbol profiling through hole and the third key graphic symbol profiling through hole are arranged; the two adjacent graphic symbols are arranged at intervals, and correspondingly, the two adjacent first key graphic symbol profiling through holes, the two adjacent second key graphic symbol profiling through holes and the two adjacent third key graphic symbol profiling through holes are arranged at equal intervals.
As a preferred scheme, the reverse side of the transparent light guide body corresponding to the graphic symbols is provided with a sunken counter bore, and the luminous lamp beads are positioned in the sunken counter bores.
As a preferred scheme, the second reflection of light piece includes the main part and upwards extends four lateral walls from the positive an organic whole of main part, and four lateral walls end to end in proper order, and four lateral walls are pasted respectively in four sides of transparent light conductor, the front of main part is pasted in the reverse side of printing opacity light conductor, the main part corresponds sunken counter bore and is provided with the hole of stepping down, luminous lamp pearl passes the hole of stepping down and stretches into in the sunken counter bore.
As a preferred scheme, the PCBA circuit board is connected with a screw, and one end of the screw passes through the PCBA circuit board, the second reflective sheet, the transparent light guide body, the first reflective sheet and the touch sensing flexible circuit board in sequence and is locked on the back surface of the mesh shell.
As a preferred scheme, the touch sensing flexible circuit board is adhered to the back surface of the mesh shell, and the front surface of the first reflective sheet abuts against the back surface of the touch sensing flexible circuit board.
Preferably, the leads of the touch sensitive flexible circuit board are inserted into a connector of the PCBA circuit board.
As a preferred scheme, the light-emitting lamp beads and the touch sensing control chip are respectively welded on the front surface and the back surface of the PCBA circuit board.
Compared with the prior art, the utility model has obvious advantages and beneficial effects, concretely speaking, can know from the above technical scheme, it mainly is through setting up the graphical symbol on the front of transparent light conductor, make the light-emitting lamp pearl stretch into the reverse side of transparent light conductor, thus can make the graphical symbol of printing opacity touch button as solitary transparent light conductor, the light-emitting source has reflection and refraction route in five directions in transparent light conductor, the light-guiding efficiency is high, the luminance is high, after the sound-transmitting screen cloth sheltered from its surface, the luminous graphical display of button is clear, the light-transmitting area is even; the transparent light guide body is assembled in the thickness range of the lightproof mesh fabric shell by penetrating the graphic symbols through the first light reflecting sheet and positioning the graphic symbols in the profiling through holes of the graphic symbols of the first keys, so that the keys can be well separated from each other and the problem of light fleeing among the keys is avoided; the touch sensing flexible circuit board is positioned between the screen cloth shell and the transparent light guide body, and the light-emitting lamp beads extend into the back side of the transparent light guide body, so that the light-emitting source and the touch sensing flexible circuit board can be assembled separately, and the temperature rise problem of the sensing copper sheet on the touch sensing flexible circuit board is avoided; and the lead of the touch induction flexible circuit board is inserted into the connector of the PCBA circuit board, so that the distance from the induction copper sheet lead on the touch induction flexible circuit board to the touch induction control chip is short, and the interference of other parts on the capacitance value of the induction copper sheet lead is effectively avoided.
To more clearly illustrate the structural features and technical means of the present invention and the specific objects and functions achieved thereby, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is an exploded view of an embodiment of the present invention;
fig. 2 is another exploded view of an embodiment of the present invention;
fig. 3 is a cross-sectional view of an embodiment of the invention.
The attached drawings indicate the following:
1. sound-transmitting mesh 2 and mesh shell
21. First key graphic symbol profiling through hole
3. Touch induction flexible circuit board 31 and second key pattern symbol profiling through hole
4. First reflector 41 and third key pattern symbol profiling through holes
5. Transparent light guide 51 and graphic symbol
52. Sunken counter bore 6, second reflector panel
61. Main body part 62, abdicating hole
7. Luminous lamp bead 8, PCBA circuit
9. Touch-sensitive control chip 10, screw.
Detailed Description
Fig. 1 to fig. 3 show specific structures of embodiments of the present invention.
A light guide key structure of a conference speaker comprises a sound-transmitting mesh 1, a mesh shell 2, a touch induction flexible circuit board 3, a first reflecting sheet 4, a transparent light guide body 5, a second reflecting sheet 6, a light-emitting lamp bead 7, a PCBA circuit board 8 and a touch induction control chip 9; wherein: the sound-transmitting mesh cloth 1 can be non-conductive porous objects such as woven cloth, leather, plastics and the like, and the first reflective sheet 4 and the second reflective sheet 6 can be foam, diffusing paper, reflective foil paper and the like.
The sound-transmitting screen cloth 1 is bonded on the front side of the screen cloth shell 2, the touch sensing flexible circuit board 3 and the transparent light guide body 5 are mounted on the back side of the screen cloth shell 2, the touch sensing flexible circuit board 3 is located between the screen cloth shell 2 and the transparent light guide body 5, the touch sensing flexible circuit board 3 is bonded on the back side of the screen cloth shell 2, and the front side of the first light reflecting sheet 4 abuts against the back side of the touch sensing flexible circuit board 3. The first light reflecting sheet 4 is attached to the front surface of the transparent light guide body 5, the second light reflecting sheet 6 is coated on four side surfaces of the transparent light guide body 5, the front surface of the transparent light guide body 5 is integrally connected with a graphic symbol 51, the screen cloth shell 2 is provided with a first key graphic symbol profiling through hole 21, and the graphic symbol 51 passes through the first light reflecting sheet 4 and is positioned in the first key graphic symbol profiling through hole 21; the light-emitting lamp beads 7 and the touch induction control chip 9 are both installed on the PCBA circuit board 8 and are respectively and electrically connected to the PCBA circuit board 8; preferably, in this embodiment, the light-emitting lamp bead 7 and the touch sensing control chip 9 are respectively welded on the front and back surfaces of the PCBA circuit board 8. The PCBA circuit board 8 is arranged on the reverse side of the transparent light guide body 5; the light-emitting lamp beads 7 extend into the reverse surface of the transparent light guide body 5 and are arranged corresponding to the graphic symbols 51; the touch sensing flexible circuit board 3 is electrically connected to the PCBA circuit board 8.
The touch-sensitive flexible circuit board 3 is provided with a second key pattern symbol copying through hole 31, the first reflector 4 is provided with a third key pattern symbol copying through hole 41, the second key pattern symbol copying through hole 31 is opposite to the third key pattern symbol copying through hole 41, and the pattern symbol 51 sequentially passes through the third key pattern symbol copying through hole 41 and the second key pattern symbol copying through hole 31 and is positioned in the first key pattern symbol copying through hole 21. In this manner, the graphic symbols 51 may be assembled within the thickness of the opaque mesh housing 2. The light guide key structure is suitable for one key or a plurality of keys. At least one graphic symbol 51 is provided, and correspondingly, at least one of the first key graphic symbol profiling through hole 21, the second key graphic symbol profiling through hole 31 and the third key graphic symbol profiling through hole 41 are provided.
Preferably, the graphic symbols 51 are provided with at least two, and correspondingly, the first key graphic symbol profiling through hole 21, the second key graphic symbol profiling through hole 31 and the third key graphic symbol profiling through hole 41 are provided with at least two; two adjacent graphic symbols 51 are arranged at intervals, and correspondingly, two adjacent first key graphic symbol profiling through holes 21, two adjacent second key graphic symbol profiling through holes 31 and two adjacent third key graphic symbol profiling through holes 41 are arranged at equal intervals. In this embodiment, there are four graphic symbols 51, and correspondingly, there are four first key graphic symbol profiling through holes 21, four second key graphic symbol profiling through holes 31, and four third key graphic symbol profiling through holes 41.
A sunken counter bore 52 is arranged on the reverse side of the transparent light guide body 5 corresponding to the graphic symbol 51, and the light-emitting lamp beads 7 are positioned in the sunken counter bores 52 so as to cover five surfaces of the light-emitting lamp beads 7. So, can make luminous lamp pearl 7 all have reflection and refraction route in five directions of transparent light conductor 5 inside. And, in this embodiment, the number of the sunken counterbores 52 is set corresponding to the number of the graphic symbols 51. One or more luminous beads 7 can be arranged corresponding to each graphic symbol 51.
The second reflective sheet 6 comprises a main body part 61 and four side walls integrally extending upwards from the front surface of the main body part 61, the four side walls are sequentially connected end to end, and the four side walls are respectively adhered to the four side surfaces of the transparent light guide body 5, so that the four side surfaces of the transparent light guide body 5 form a reflective design; the front of main part 61 pastes in the reverse side of printing opacity light guide body, main part 61 corresponds sunken counter bore 52 and is provided with the hole of stepping down 62, luminous lamp pearl 7 passes and steps down hole 62 and stretches into sunken counter bore 52 in to make luminous lamp pearl 7 stretch into sunken counter bore 52 smoothly.
The PCBA circuit board 8 is connected with a screw 10, one end of the screw 10 sequentially penetrates through the PCBA circuit board 8, the second reflective sheet 6, the transparent light guide body 5, the first reflective sheet 4 and the touch sensing flexible circuit board 3 and is fixedly locked on the reverse side of the mesh fabric shell 2, the screw 10 is fixedly locked in a lock hole of a fixed column on the reverse side of the mesh fabric shell 2, and the PCBA circuit board 8, the second reflective sheet 6, the transparent light guide body 5, the first reflective sheet 4 and the touch sensing flexible circuit board 3 are all provided with a position avoiding hole for the screw 10 to penetrate through, so that the PCBA board and the transparent light guide body 5 can be stably installed on the mesh fabric shell 2; in this embodiment, two screws 10 are provided.
Preferably, in this embodiment, the leads of the touch-sensitive flexible circuit board 3 are inserted into the connector of the PCBA circuit board 8; certainly, the conduction connection between the touch sensing flexible circuit board 3 and the PCBA circuit board 8 can also be an elastic metal sheet or thimble conduction, and only needs to be set according to actual production requirements; in this way, conduction between the touch-sensitive flexible circuit board 3 and the PCBA circuit board 8 can be achieved.
This light guide button constructional device light guide path is that luminous lamp pearl 7 is luminous on PCBA circuit board 8 passes through transparent light conductor 5 and refracts its top surface graphic symbol 51 region with light, and first reflector plate 4 and second reflector plate 6 reflect the light of luminous lamp pearl 7 to the inside of transparent light conductor 5. When pressing the printing opacity button of screen cloth casing 2, touch-sensitive control chip 9 detects that the response copper skin induction capacitance value changes on the touch-sensitive flexible circuit board 3, transmits for equipment main control chip through signal communication such as I2C and realizes the button function.
In summary, the design of the utility model is characterized in that the front of the transparent light conductor is provided with the graphic symbol, so that the luminous lamp bead extends into the back of the transparent light conductor, thereby the graphic symbol of the transparent touch key can be used as the single transparent light conductor, the luminous source has reflection and refraction paths in five directions in the transparent light conductor, the light guiding efficiency is high, the brightness is high, the luminous graph of the key is displayed clearly after the transparent mesh cloth covers the surface, and the transparent area is uniform; the transparent light guide body is assembled in the thickness range of the lightproof screen cloth shell by penetrating the graphic symbols through the first light reflecting sheet and positioning the graphic symbols in the first key graphic symbol profiling through holes, so that the keys can be well isolated from each other and have no problem of light channeling; the touch sensing flexible circuit board is positioned between the screen cloth shell and the transparent light guide body, and the light-emitting lamp beads extend into the back side of the transparent light guide body, so that the light-emitting source and the touch sensing flexible circuit board can be assembled separately, and the temperature rise problem of the sensing copper sheet on the touch sensing flexible circuit board is avoided; and the lead of the touch induction flexible circuit board is inserted into the connector of the PCBA circuit board, so that the distance from the induction copper sheet lead on the touch induction flexible circuit board to the touch induction control chip is short, and the interference of other parts on the capacitance value of the induction copper sheet lead is effectively avoided.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are all within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a meeting speaker leaded light button structure which characterized in that: the screen cloth comprises an acoustic mesh cloth, a mesh cloth shell, a touch induction flexible circuit board, a first reflecting sheet, a transparent light guide body, a second reflecting sheet, a light-emitting lamp bead, a PCBA circuit board and a touch induction control chip;
the sound-transmitting mesh cloth is adhered to the front side of the mesh cloth shell, the touch sensing flexible circuit board and the transparent light guide body are arranged on the back side of the mesh cloth shell, the touch sensing flexible circuit board is located between the mesh cloth shell and the transparent light guide body, the first light reflecting sheet is attached to the front side of the transparent light guide body, the second light reflecting sheet is coated on four side faces of the transparent light guide body, the front side of the transparent light guide body is provided with graphic symbols, the mesh cloth shell is provided with first key graphic symbol profiling through holes, and the graphic symbols penetrate through the first light reflecting sheet and are positioned in the first key graphic symbol profiling through holes; the light-emitting lamp beads and the touch induction control chip are both arranged on the PCBA circuit board and are respectively and electrically connected to the PCBA circuit board; the PCBA circuit board is arranged on the reverse side of the transparent light guide body; the light-emitting lamp beads extend into the reverse surface of the transparent light guide body and are arranged corresponding to the graphic symbols; the touch induction flexible circuit board is electrically connected to the PCBA circuit board.
2. The structure of claim 1, wherein: the touch-sensitive flexible circuit board is provided with a second key pattern symbol copying through hole, the first reflector is provided with a third key pattern symbol copying through hole, the second key pattern symbol copying through hole and the third key pattern symbol copying through hole are arranged just opposite to each other, and the pattern symbols sequentially pass through the third key pattern symbol copying through hole and the second key pattern symbol copying through hole and are positioned in the first key pattern symbol copying through hole.
3. A light guide key structure for conference speakers according to claim 2, wherein: the graphic symbols are provided with at least one, and correspondingly, the first key graphic symbol profiling through hole, the second key graphic symbol profiling through hole and the third key graphic symbol profiling through hole are provided with at least one.
4. A light guide key structure for conference speakers according to claim 3, wherein: the number of the graphic symbols is at least two, and correspondingly, the number of the first key graphic symbol profiling through holes, the number of the second key graphic symbol profiling through holes and the number of the third key graphic symbol profiling through holes are at least two; the two adjacent graphic symbols are arranged at intervals, and correspondingly, the two adjacent first key graphic symbol copying through holes, the two adjacent second key graphic symbol copying through holes and the two adjacent third key graphic symbol copying through holes are arranged at equal intervals.
5. The structure of claim 1, wherein: and a sunken counter bore is arranged on the reverse side of the transparent light guide body corresponding to the graphic symbols, and the light-emitting lamp beads are positioned in the sunken counter bores.
6. A light guide key structure for conference speakers according to claim 5, wherein: the second reflection of light piece includes the main part and upwards extends four lateral walls from the positive an organic whole of main part, and four lateral walls end to end in proper order, and four lateral walls are pasted respectively in four sides of transparent light conductor, the reverse side in printing opacity light conductor is pasted in the front of main part, the main part corresponds sunken counter bore and is provided with the hole of stepping down, it stretches into in the sunken counter bore to send out light lamp pearl to pass the hole of stepping down.
7. A light guide key structure for conference speakers according to claim 1, characterized in that: the PCBA circuit board is connected with a screw, and one end of the screw sequentially penetrates through the PCBA circuit board, the second reflective sheet, the transparent light guide body, the first reflective sheet and the touch induction flexible circuit board and is fixedly locked on the reverse side of the mesh shell.
8. A light guide key structure for conference speakers according to claim 1, characterized in that: the touch sensing flexible circuit board is adhered to the back surface of the mesh shell, and the front surface of the first reflection sheet abuts against the back surface of the touch sensing flexible circuit board.
9. The structure of claim 1, wherein: the lead of the touch sensitive flexible circuit board is inserted into a connector of the PCBA circuit board.
10. A light guide key structure for conference speakers according to claim 1, characterized in that: luminous lamp pearl, touch-sensitive control chip weld respectively in the tow sides of PCBA circuit board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222316528.2U CN218387888U (en) | 2022-08-31 | 2022-08-31 | Light guide key structure of conference loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222316528.2U CN218387888U (en) | 2022-08-31 | 2022-08-31 | Light guide key structure of conference loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218387888U true CN218387888U (en) | 2023-01-24 |
Family
ID=84970766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222316528.2U Active CN218387888U (en) | 2022-08-31 | 2022-08-31 | Light guide key structure of conference loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218387888U (en) |
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2022
- 2022-08-31 CN CN202222316528.2U patent/CN218387888U/en active Active
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