CN210516560U

CN210516560U - Luminous film switch

Info

Publication number: CN210516560U
Application number: CN201921758895.XU
Authority: CN
Inventors: 张爱民
Original assignee: Xiamen Mingcai Electronic Technology Co Ltd
Current assignee: Xiamen Mingcai Electronic Technology Co Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-05-12
Anticipated expiration: 2029-10-18

Abstract

The utility model discloses a luminous membrane switch relates to an electronic components, and its technical scheme main points include circuit board, adhesion on the circuit board and the leaded light layer of making by light-tight material and the panel layer of adhesion in leaded light layer upper surface, the panel layer towards one side on leaded light layer has the button icon in the button position printing, every button position on the circuit board all be equipped with the light-emitting component that the circuit board is independently connected, the leaded light groove has been seted up in the button position on leaded light layer, install the leaded light piece of making by the printing opacity material in the leaded light groove, the utility model discloses an every button can independently give out light and have good button indicating effect.

Description

Luminous film switch

Technical Field

The utility model relates to an electronic components, more specifically says that it relates to a luminous membrane switch.

Background

The membrane switch is an operation system integrating a key function, an indicating element and an instrument panel, and is widely applied to the fields of electronic communication and electronic measurement instruments, industrial control, medical equipment, automobile industry, intelligent toys, household appliances and the like. The general membrane switch can not clearly see the position of the switch in a dark place, and the use is very inconvenient.

In the prior art, the light-emitting membrane switch is to place the light-emitting bodies below the panel layer, and turn on all the light-emitting bodies while the circuit is turned on, so as to illuminate the whole panel layer. However, when the light-emitting body emits light, the light source is inevitably unevenly distributed, and the light source cannot be used as an instruction for key operation, and therefore, there is room for improvement.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a luminous membrane switch, its advantage lies in that every button is independent luminous, has good button indicating effect.

In order to achieve the above purpose, the utility model provides a following technical scheme: including circuit board, adhesion on the circuit board and by the leaded light layer that the light-tight flexible material made and adhesion in the panel layer of leaded light layer upper surface, the panel layer towards one side on leaded light layer has the button icon in the printing of button position, every button position on the circuit board all be equipped with circuit board independent connection's illuminating part, the leaded light groove has been seted up in the button position on leaded light layer, install the light guide piece of making by the printing opacity material in the light guide inslot.

By adopting the technical scheme, when the key position on the membrane switch is pressed, the light-emitting component at the key position emits light, and the light is emitted into the panel layer through the light guide block to illuminate the key icon on the panel layer, so that each key can independently emit light; wherein, because the leaded light layer is light-tight, therefore the light that the illuminating part sent can't see through leaded light layer entering adjacent leaded light piece, can avoid leading to adjacent button icon to be lighted because of the light leak to can make the good button indicating effect of this membrane switch.

The utility model discloses further set up to: the outer wall of the light guide block is tightly attached to the inner wall of the light guide groove.

Through adopting above-mentioned technical scheme, the design of inseparable laminating can improve the stability of being connected of light guide block and light guide groove, prevents to receive the lateral extrusion and damage because of the light guide block is not hard up or slides and lead to the light-emitting part.

The utility model discloses further set up to: and a chamfer is arranged on a side line of one side, facing the circuit board, of the light guide block.

Through adopting above-mentioned technical scheme, the setting of chamfer is conveniently installed the leaded light piece in the leaded light groove.

The utility model discloses further set up to: the panel layer comprises a light-transmitting area which is positioned at the key icon and is used for light to pass through and a light-blocking area which is positioned at the outer side of the key icon and is not light-transmitting

Through adopting above-mentioned technical scheme, directly see through the panel layer for light, set up the light blocking region on the panel, display button icon that can be more obvious to further strengthen button indicating effect.

The utility model discloses further set up to: the upper surface of the panel layer is a frosted surface.

Through adopting above-mentioned technical scheme, the frosting can the scattering penetrate the light on panel layer, makes light more soft, improves and uses the travelling comfort.

The utility model discloses further set up to: the light-emitting piece is a sheet-shaped LED, a groove is formed in one side, facing the circuit board, of the light guide block, and the light-emitting piece is embedded into the groove.

Through adopting above-mentioned technical scheme, for illuminating part and leaded light piece looks butt, set up the recess on the leaded light piece, can reduce the extrusion of leaded light piece to the illuminating part when pressing membrane switch to avoid the illuminating part to receive the extrusion and damage.

The utility model discloses further set up to: and a color layer is arranged in the light guide block along the length direction of the light guide block.

Through adopting above-mentioned technical scheme, the setting on colour layer can be categorised different types of button, and the person of facilitating the use distinguishes the button type through the button colour, can further strengthen button indicating effect.

The utility model discloses further set up to: and the circuit board is provided with an adjusting key for adjusting the brightness of the luminous piece.

Through adopting above-mentioned technical scheme, because the membrane switch service environment has the difference, adjust the luminance of illuminating part through adjusting the button, can adapt to different operating modes to further improve button indicating effect.

To sum up, the utility model has the advantages of it is following:

1. when the membrane switch is pressed, the light-emitting component at the key position emits light, penetrates through the light guide block and enters the panel layer, and the key icons on the panel layer are illuminated, so that each key can independently emit light; moreover, because the light guide layer is light-tight, light emitted by the light-emitting piece cannot enter the adjacent light guide block through the light guide layer, and the adjacent key icons can be prevented from being illuminated due to light leakage, so that the membrane switch has a good key indication effect;

2. the light blocking area is arranged, so that the key indication effect is further enhanced;

3. through setting up the recess, in the illuminating part embedding recess, can reduce the extrusion of leaded light piece to the illuminating part when pressing membrane switch to avoid the illuminating part to damage because of the extrusion.

Drawings

FIG. 1 is a schematic view of an explosive structure of the present embodiment;

fig. 2 is a partial sectional structural schematic diagram of the present embodiment.

Description of reference numerals: 1. a circuit board; 2. a light guide layer; 3. a panel layer; 31. a key icon; 32. a light blocking area; 4. a light emitting member; 5. a light guide groove; 6. a light guide block; 7. a groove; 8. chamfering; 9. a color layer; 10. and adjusting the key.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model provides a luminous membrane switch, as shown in figure 1, including circuit board 1, the adhesion is on circuit board 1 and the leaded light layer 2 and the panel layer 3 of adhesion in leaded light layer 2 upper surface made by black polyester film, panel layer 3 just is located to correspond the printing of button position and has button icon 31 towards one side of leaded light layer 2, every button position on the circuit board 1 all installs with the luminous piece 4 that corresponds button position electric connection, leaded light groove 5 has been seted up at the button position to leaded light layer 2, install the leaded light piece 6 of being made by white polyester film in the leaded light groove 5. The light that illuminating part 4 jetted out can penetrate light guide block 6 and jet out, and because light guide layer 2 is light-tight, has the limit between the adjacent light guide groove 5, therefore light can not get into in the adjacent light guide block 6 to can make this membrane switch have good button indicating effect.

As shown in fig. 1, the panel layer 3 includes a light-transmitting area at the key icon 31 and a light-blocking area 32 outside the key icon 31 and printed with black ink. When the light-emitting member 4 emits light, the light blocking area 32 can block the light emitted from the light guide block 6, so that the light can be emitted out of the panel layer 3 in the form of the key icon 31, and the key indication effect is further enhanced.

Further, in order to improve the comfort of use, the upper surface of the panel layer 3 is frosted in this embodiment.

As shown in fig. 1, due to differences in the use environments of the membrane switch, the circuit board 1 is provided with an adjusting key 10 for adjusting the brightness of the luminous element 4, so that the brightness of the luminous element 4 can be adjusted according to the external light intensities with different intensities, and the key indication effect is further improved.

As shown in fig. 2, the light emitting element 4 is a chip LED, a groove 7 is formed on one side of the light guide block 6 facing the circuit board 1, and the light emitting element 4 is embedded in the groove 7. For light guide block 6 and luminous 4 looks butt, with luminous 4 embedding light guide block 6 in the recess 7, when pressing membrane switch, can reduce the extrusion of light guide block 6 to luminous 4 upper surface, avoid luminous 4 to receive the extrusion and damage to the life of extension luminous 4.

Further, in order to improve the connection stability between the light guide block 6 and the light guide groove 5 and avoid the damage of the light emitting element 4 caused by the transverse extrusion due to the looseness or slippage of the light guide block 6, the outer wall of the light guide block 6 is tightly attached to the inner wall of the light guide groove 5 in the embodiment.

Further, in order to facilitate the installation of the light guide block 6 into the light guide groove 5, a chamfer 8 is provided on a side line of the side of the light guide block 6 facing the circuit board 1 in the present embodiment.

As shown in fig. 2, in order to further improve the key indication effect and classify different types of keys, a color layer 9 is installed in the light guide block 6 along the length direction of the light guide block 6 in the present embodiment.

The utility model discloses a working process and beneficial effect as follows: when the key position is pressed, the circuit corresponding to the key position is conducted, the light-emitting part 4 starts to emit light, light penetrates through the light guide block 6 and then enters the panel layer 3, and then passes through the light-transmitting area, so that the key icon 31 emits light, and each key can independently emit light; and because light guide layer 2 is light-tight, therefore the light that luminous element 4 sent can't penetrate light guide layer 2 and get into adjacent light guide block 6, can avoid leading to adjacent key icon 31 to be lighted because of the light leak to can make the good key indicating effect of this membrane switch.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, any modification, equivalent replacement, or improvement made within the design concept of the present invention should be included within the protection scope of the present invention.

Claims

1. A light emitting membrane switch characterized by: including circuit board (1), adhesion on circuit board (1) and leaded light layer (2) and adhesion in panel layer (3) of leaded light layer (2) upper surface made by light-tight material, panel layer (3) towards one side of leaded light layer (2) has button icon (31) in the button position printing, every button position on circuit board (1) all be equipped with circuit board (1) independent connected luminous member (4), leaded light groove (5) have been seted up in the button position on leaded light layer (2), install in leaded light groove (5) and lead light piece (6) of being made by the printing opacity material.

2. The luminescent membrane switch of claim 1, wherein: the outer wall of the light guide block (6) is tightly attached to the inner wall of the light guide groove (5).

3. The luminescent membrane switch of claim 2, wherein: and a chamfer (8) is arranged on the side line of the light guide block (6) facing one side of the circuit board (1).

4. The luminescent membrane switch of claim 1, wherein: the panel layer (3) comprises a light-transmitting area corresponding to the key icon (31) and allowing light to pass through, and a light-blocking area (32) located outside the key icon (31) and not transmitting light.

5. The luminescent membrane switch of claim 1, wherein: the upper surface of the panel layer (3) is a frosted surface.

6. The luminescent membrane switch of claim 1, wherein: the LED light source is characterized in that the light emitting piece (4) is a sheet-shaped LED, a groove (7) is formed in one side, facing the circuit board (1), of the light guide block (6), and the light emitting piece (4) is embedded into the groove (7).

7. The luminescent membrane switch of claim 1, wherein: and a color layer (9) is arranged in the light guide block (6) along the length direction of the light guide block (6).

8. The luminescent membrane switch of claim 1, wherein: and the circuit board (1) is provided with an adjusting key (10) for adjusting the brightness of the luminous piece (4).