CN201054315Y - Film light-guiding keyboard - Google Patents

Abstract

The utility model is a thin film light-guiding keyboard, which is a light-guiding membrane assembled in a thin keyboard device; a plurality of light-emitting diodes (LEDs) are connected correspondingly at the top of the thin film circuit board, a plurality of key reflective areas are distributed on the light-guiding membrane corresponding to the plurality of key positions of the keyboard, and a plurality of ring concave holes with different depths and densities are arranged in an array on the bottom surface of each reflective area, and the depth of each ring concave hole increases from shallow to deep in proportion to the distance between the key and the light-emitting diode (LED) light source, and a pressing end is convexly provided downward on the bottom surface of each key reflective area, and the thin film circuit board can be triggered and turned on by pressing. The utility model can adjust to produce uniform and identical vertical reflected light brightness in response to different distances between the key and the LED light source, and can specifically enhance the uniform light-guiding effect of the overall light-transmitting keyboard.

Description

Film light guide keyboard

technical field

The utility model relates to a thin-film light-guiding keyboard, in particular to a thin-film light-guiding keyboard in which a light-guiding diaphragm is assembled in a thin keyboard device.

Background technique

At present, notebook computers and mobile phone devices are widely recognized and adopted by market operators and users because they are easy to carry around, process documents and communicate in real time. However, the keys of notebook computer keyboards or mobile phone devices currently use thin key structures. Regarding the notebook computer keyboard, it is mainly assembled and connected with a bridging support structure between the keycap and the bottom plate of the word key, and the interlocking structure of the bridging button has been disclosed in China Taiwan Patent Announcement No. 319438 and No. 282857 Patent case (applicant's application was approved), as for the button of the mobile phone device, a thin elastic keyboard is used to trigger the key dial signal, but although the thin bridging keyboard structure of these known notebook computers has the advantages of ultra-thin volume and light weight and the advantages of precise operation, but the keyboard itself does not have a light-transmitting structure design that provides auxiliary lighting, so the keyboard can only be operated in brightly lit places, but cannot be operated in dark places, resulting in its failure in special occasions. It is inconvenient to use and operate, so the applicant company developed and applied for a patent case: light guide plate and backlight module of luminous keyboard (China Taiwan Patent Certificate No. M306689), which is mainly raised on the light guide plate There is a snap-fit structure to facilitate the direct assembly of bridging components, but there is no design to strengthen the light guide for the distance between the individual buttons and the LED light source, so the buttons that are far away from the LED light source appear to have insufficient light transmission and brightness. Although the thin keypad of the known mobile phone device has an LED light source so that the key has a light-transmitting effect, because each key is also due to the different distance factors from the LED light source, it will cause the situation that the light-transmitting brightness of each key is different, and even cause Disadvantages of inconvenient use;

In view of this, the inventor has been engaged in the manufacture and design of computer keyboards for many years, and actively researched and improved them, and made and tested many physical samples, and then specifically improved the above-mentioned shortcomings of known computer keyboards and mobile phone keypads. , finally complete the utility model.

Contents of the invention

The purpose of this utility model is to provide a thin-film light-guiding keyboard, which is mainly assembled with a light-guiding diaphragm in a thin bridging keyboard or a mobile phone device, and it is designed with a structure that reinforces the brightness of remote light reflection to achieve overall The light-transmitting keyboard has a uniform light-transmitting effect.

The main structure of the utility model is to assemble a light guide film in a thin keyboard device; wherein the keyboard device is composed of a keyboard and a thin film circuit board, and several light emitting diodes (LEDs) are connected correspondingly on the top of the thin film circuit board. ), a plurality of key reflective areas are distributed on the light guide film corresponding to the plurality of key positions of the keyboard, and the bottom surface of each of the reflective areas is respectively arrayed with a plurality of annular recesses of different depths and densities, and each of the The depth of the ring recess increases from shallow to deep according to the distance between it and the light-emitting diode (LED) light source. There is a pressing end protruding downward on the bottom surface of each key reflective area, so that it can be activated by pressing. The thin film circuit board.

The keyboard includes several bridges, several light-transmitting keycaps, several elastic elements, a key frame plate and a bottom plate; The pivot and the sliding shaft are pivotally connected to the top edge of the bridging bridge, and the sliding shaft and the pivoting shaft at the bottom edge of the bridging bridge are correspondingly pivotally connected to the sliding guide groove and the receiving groove on the key frame plate, and the light-transmitting The elastic element is pushed against the pressing part of the bottom surface of the keycap, and the elastic element is located at the position of the key reflective area on the top surface of the light guide film. terminal, so as to achieve the performance of touching and conducting the thin film circuit board.

The light guide film is a film-shaped light guide element assembled between the key frame board and the thin film circuit board, and it uses a plurality of ring recesses in the key reflective area to reflect and guide the LED light source to the top position of the translucent keycap.

The keyboard device belongs to a mobile phone device, which includes an upper cover shell and a base, and the thin film circuit board is assembled in the base, and the keyboard is a light-transmitting keyboard sheet, and the light-guiding film is assembled on the transparent Film-shaped light guide element between the optical keyboard sheet and the film circuit board.

The upper cover shell has a plurality of keyholes, and the plurality of keyholes correspond to accommodate and assemble a plurality of light-transmitting keys on the light-transmitting keyboard sheet. terminal, and then the film circuit board can be touched and turned on to send a dial signal.

From the above, the thin film light guide keyboard of the present invention can be adjusted to produce uniform and identical vertical reflection light brightness in response to the different distances between the keys and the LED light source, and can specifically improve the uniform light guide effect of the overall light-transmitting keyboard, so , the utility model can improve the use efficiency of the light guide keyboard.

Description of drawings

Fig. 1: A three-dimensional exploded view of the first embodiment of the computer keyboard of the present invention, which shows that the light guide film is applied to the computer keyboard.

Fig. 2: A partially enlarged three-dimensional exploded view of the computer keyboard of the present invention, which shows the assembly structure of a single key.

FIG. 3 is a combined cross-sectional schematic view of the single button in FIG. 2 .

Fig. 4: A partial top view of the light guide diaphragm of the computer keyboard of the present invention.

Figure 5: Schematic diagram of the assembly of the elastic element, the light guide film and the thin film circuit board of the computer keyboard of the present invention, which shows the structure of the corresponding key reflective area on the light guide film according to the different distances between each key and the LED light source design.

FIG. 6 : An exploded perspective view of the second embodiment of the mobile phone device of the present invention, which shows that the light guide film is applied to the mobile phone device.

Fig. 7: The top view of the light guide film of the mobile phone device of the present invention.

Figure 8: Schematic diagram of the assembly of the light-guiding membrane and the thin-film circuit board of the mobile phone device of the present invention, which shows the structural design of the corresponding button reflective area on the light-guiding membrane according to the different distances between each button and the LED light source.

Figure number:

10: Keyboard 11: Bridge

111: Pivot 112: Sliding shaft

113: sliding shaft 114: pivot

12: Translucent keycap 122: Guide chute

121: Pivot slot 125: Pressing part

13: Button frame plate 133: Guide chute

134: Accepting groove 15: Elastic element

151: Press column 20: Light guide film

221, 231, 241, 251: ring recess 22, 23, 24, 25: reflective area

30: Thin film circuit board 28: Press end

35: LED 40: Bottom plate

50: Mobile phone device 60: Thin film circuit board

65: LED 70: Light guide film

721, 731, 741, 751: ring cavity 72, 73, 74, 75: reflective area

78: Press end 80: Translucent keyboard sheet

90: Upper cover shell 81: Translucent button

95: Base 91: Keyhole

Detailed ways

First, please refer to the first embodiment shown in Fig. 1 to Fig. 5, the film light-guiding keyboard of the present invention is to assemble a light-guiding film 20 in a bridge-type keyboard 10; wherein:

The keyboard 10 is integrally assembled on a bottom plate 40 by several bridges 11, several light-transmitting keycaps 12, several elastic elements 15, a key frame plate 13 and a thin film circuit board 30; The cap 12 is a square light-transmitting pressing element. Two symmetrical pivot grooves 121 and two guide grooves 122 are formed on the bottom surface of the keycap 12, and a pressing portion 125 is formed at its central position. The connecting groove 121 and the two guide grooves 122 are correspondingly pivotally connected to the pivot 111 and the two sliding shafts 112 on the top edge of the bridge 11, and the two sliding shafts 113 and the pivot 114 on the bottom edge of the bridge 11 are correspondingly pivotally connected to the bridge 11. In the two guiding grooves 133 and the receiving groove 134 on the key frame plate 13, the light-transmitting elastic element 15 is pushed against the pressing part 125 on the bottom surface of the light-transmitting keycap 12, and the elastic element 15 is arranged on the light-guiding The top surface of the diaphragm 20, and the pressing column 151 in the hollow elastic element 15 can be pressed down to touch and conduct the thin film circuit board 30;

The light guide film 20 belongs to a thin film made of transparent silicone material, and it is provided with a thin film light guide element assembled between the key frame plate 13 and the thin film circuit board 30, and it is composed of a light emitting diode (LED) 35 The light source is used to reflect and guide the light to the position of the light-transmitting keycap 12 on the top, and a plurality of key reflective areas 22, 23, 24, 25 are distributed on the light guide film 20 corresponding to the positions of the plurality of elastic elements 15, and Each of the reflective areas 22, 23, 24, and 25 is set correspondingly according to its different vertical distances from the LED 35 light source, and the bottom surfaces of each of the reflective areas 22, 23, 24, and 25 are respectively arrayed with a plurality of rings of different depths. The recesses 221, 231, 241, 251, that is, the plurality of arrayed annular recesses 221, 231, 241, 251 have different depths and layout densities respectively, so as to suitably adjust the distance between them and the LED35 light source. The adjustment produces the same vertical reflection brightness, that is, because the plurality of ring recesses 251 are far away from the LED 35 light source, the brightness of the horizontal projected light of the LED 35 light source is reduced, so the plurality of ring recesses 251 are designed to have The deeper outer ring surface is used to increase the brightness of its upward vertical reflection. Similarly, according to the relationship between the brightness of the light and the distance from the light source, the depth of each ring cavity 221, 231, 241, 251 is in response to the distance from the light source. And the ratio from shallow to deep is increased, so as to be able to adjust to make each button reflective area 22, 23, 24, 25 have a uniform vertical reflection brightness, so as to specifically improve the uniform light guide effect of the overall light-transmitting keyboard, and in each button The central positions of the bottom surfaces of the reflective areas 22, 23, 24, and 25 respectively protrude downwards with a pressing end 28, and the pressing end 28 corresponds to the pressing column 151 of the elastic element 15 up and down, so that the light-transmitting keycap 12 can be pressed. To move the elastic element 15 and the pressing end 28 of the light guide film 20 downward, and then touch and conduct the thin film circuit board 30;

The thin film circuit board 30 is a long sheet thin film circuit board structure that conducts key signals, and several light-emitting diodes (LEDs) 35 are correspondingly connected at its top to provide a light-guiding light source for the keyboard;

The bottom plate 40 is a plate body supporting the key frame plate 13 and the thin film circuit board 30, so that it is assembled into a complete keyboard key structure;

For the second embodiment of the thin film light-guiding keyboard of the present invention, please refer to FIGS. 6 to 8 , in which a light-guiding film 70 is assembled in a mobile phone device 50; wherein:

The mobile phone device 50 includes an upper cover shell 90, a base 95, a light-transmitting keyboard sheet 80, and a film circuit board 60; wherein the upper cover shell 90 has a plurality of key holes 91, which can accommodate and assemble the transparent A plurality of light-transmitting buttons 81 on the optical keyboard sheet 80, and the thin film circuit board 60 processes the conduction button signal, and several light-emitting diodes (LED) 65 light sources are connected at its top, which can provide a light-guiding light source for the mobile phone keyboard;

The light guide film 70 is a thin film made of transparent silicone material, and it is a light guide element assembled between the light-transmitting keyboard sheet 80 and the thin film circuit board 60, and it is lighted by a light emitting diode (LED) 65 as a light source. The light is reflected and guided to the position of the light-transmitting key 81 on the top surface, and a plurality of key reflective areas 72, 73, 74, 75 are distributed on the light-guiding film 70 corresponding to the positions of the plurality of light-transmitting keys 81, and each of the The reflective areas 72, 73, 74, and 75 are arranged correspondingly according to their different vertical distances from the LED 65 light source, and the bottom surfaces of each of the reflective areas 72, 73, 74, and 75 are respectively arrayed with a plurality of annular recesses of different depths. 721, 731, 741, 751, that is, the plurality of array-shaped annular recesses 721, 731, 741, 751 have different depths and layout densities respectively, which can be appropriately adjusted in response to different distances from the LED 65 light source. Evenly and the same vertical reflection brightness, that is, because the plurality of ring recesses 751 are far away from the LED 65 light source, the horizontal projection light brightness of the LED 65 light source is reduced, so the plurality of ring recesses 751 are designed to have a higher Deep outer ring surface to increase the brightness of its upward vertical reflection. Similarly, the depth of each of the ring recesses 721, 731, 741, 751 is gradually increased in proportion to the distance from the light source, so that it can be adjusted. To make each key reflective area 72, 73, 74, 75 have uniform vertical reflection light brightness, to specifically enhance the uniform light guide effect of the overall light-transmitting keyboard, and in the center of the bottom surface of each key reflective area 72, 73, 74, 75 A pressing end 78 is respectively protruding downwards at the position, and the pressing end 78 is a pressing part (not shown) corresponding to the bottom surface of the light-transmitting button 81 up and down, so that the light-transmitting button 81 can be pressed downward to touch the The pressing end 78 of the light guide film 70 can touch and conduct the thin film circuit board 60 to send a dial signal;

The main structural features and practical performance of the present utility model are briefly explained as follows: the light guide film 20, 70 of the present utility model can be assembled in a bridge type keyboard 10 or a mobile phone device 50, and it is composed of a light-emitting diode (LED) light source to guide the light to the light-transmitting keycap 12 or the light-transmitting key 81, that is, a plurality of key reflective areas are distributed on the light-guiding film 20, 70 so that the light is concentrated in the required direction, and Each of the reflective areas is respectively arrayed with a plurality of annular recesses of different depths and densities, which can be adjusted to produce uniform and identical vertical reflection brightness according to the different distances between them and the LED light source, that is, the depth of each annular recess According to the distance between it and the LED light source, the ratio increases from shallow to deep, so as to specifically improve the uniform light guiding effect of the overall light-transmitting keyboard.

In summary, the utility model is a thin-film light-guiding keyboard, which is mainly assembled with a light-guiding diaphragm in a thin bridging keyboard or a mobile phone device, and it is designed with a structure that reinforces the brightness of remote light reflection. In order to achieve the overall light-transmitting keyboard has a uniform light-transmitting effect.

Claims (5)

1. A thin-film light-guiding keyboard, characterized in that: the thin-film light-guiding keyboard is assembled with a light-guiding diaphragm in a thin keyboard device; wherein: The keyboard device is composed of a keyboard and a thin-film circuit board, and several light-emitting diodes are correspondingly connected to the top of the thin-film circuit board; The light guide film is a thin film made of transparent silicone material, and a plurality of key reflective areas are distributed on the light guide film corresponding to the plurality of key positions of the keyboard, and a plurality of key reflective areas are respectively arrayed on the bottom surface of each light reflective area. There are ring recesses of different depths and densities, and the depth of each ring recess increases in proportion to the distance from the light source of the light-emitting diode from shallow to deep. A push-button is provided on the bottom of each key reflective area. Therefore, the pressing end of the film circuit board can be touched and turned on. 2. The film light guide keyboard according to claim 1, characterized in that: the keyboard comprises several bridges, several light-transmitting keycaps, several elastic elements, a key frame plate and a bottom plate; the keycap is A light-transmitting pressing element, the keycap is pivotally connected to the pivot and the sliding shaft of the top edge of the bridging bridge via the pivot joint groove and the sliding guide groove, and the sliding shaft and the pivot shaft of the bottom edge of the bridging bridge are correspondingly pivoted to the pivoting shaft of the bridging bottom edge The sliding guide groove and the receiving groove on the key frame plate, and the light-transmitting elastic element pushes against the pressing part of the bottom surface of the keycap, and the elastic element is located at the position of the key reflective area on the top surface of the light guide film. The pressing column in the elastic element presses downwards correspondingly to the pressing end of the bottom surface of the light guide film. 3 . The film light-guiding keyboard as claimed in claim 2 , wherein the light-guiding film is a film-shaped light-guiding element arranged and assembled between the key frame board and the thin-film circuit board. 4 . 4. The thin-film light-guiding keyboard according to claim 1, wherein the keyboard device belongs to a mobile phone device, which includes an upper cover shell and a base, and the thin-film circuit board is assembled in the base, and the keyboard It is a light-transmitting keyboard sheet, and the light-guiding membrane is a film-shaped light-guiding element assembled between the light-transmitting keyboard sheet and the film circuit board. 5. The thin-film light-guiding keyboard according to claim 4, wherein the upper cover shell has a plurality of keyholes, and the plurality of keyholes correspond to accommodating a plurality of light-transmitting keys on the light-transmitting keyboard sheet, the The pressing part on the bottom surface of the light-transmitting key corresponds up and down to the pressing end of the light-guiding film.

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