CN107541903B

CN107541903B - Operation display device for household appliances and washing machine

Info

Publication number: CN107541903B
Application number: CN201610498218.3A
Authority: CN
Inventors: 杨林; 朱国防; 刘尊安; 纪虎; 逯迎; 庄儒营
Original assignee: Qingdao Haier Washing Machine Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd
Priority date: 2016-06-29
Filing date: 2016-06-29
Publication date: 2020-04-24
Anticipated expiration: 2036-06-29
Also published as: CN107541903A; WO2018001221A1

Abstract

The invention discloses an operation display device and a washing machine for household appliances, which have better structures, wherein the device comprises an operation panel, a capacitive sensor touch membrane and a light-emitting device, the corresponding light-emitting device comprises a substrate, a PCB (printed Circuit Board) and a filter membrane, the three components can be assembled in parallel, the substrate is integrally formed and is provided with a plurality of mutually-separated through holes, and the openings of the through holes correspond to functional symbols to be illuminated; the filter membrane is attached to the upper surface of the base body, a light-transmitting area is arranged corresponding to the through hole opening, and the rest light-tight areas are arranged; the PCB circuit board install in the base plate lower surface corresponds through-hole lower part opening on it and installs the luminous body, adopts SMD granule LED on the PCB circuit board, and whole processing is convenient, convenient assembling, through-hole and attached filter membrane, can effectual control illumination scope and can play better spotlight effect, have better function symbol display effect.

Description

Operation display device for household appliances and washing machine

Technical Field

The invention relates to the field of household appliance control and manufacturing, in particular to an operation display device for a household appliance and a washing machine.

Background

Along with the improvement of the living standard of people, household appliances are popularized and used in a large range, people have higher and higher requirements on the appearance and the use convenience of corresponding household appliances, and an operation display device formed by a capacitive touch key is widely used, so that the structural integrity of a product is ensured, and the moisture resistance of the product is improved; on the other hand, the problem of mechanical service life is avoided, and the long-term reliability of the key is ensured.

However, the existing capacitive touch key operation display device has a complex structure, particularly an assembly structure of an adopted light-emitting device, is high in production cost and not beneficial to large-scale production and manufacture, and an illumination area is not easy to control, so that the display effect of functional symbols on a panel is poor.

Disclosure of Invention

The technical problem solved by the invention is as follows: the operation display device for household appliance has simple assembling structure and easy manufacture, and has more function symbol display effect.

In order to achieve the purpose, the invention adopts the following technical scheme:

an operation display device for an electric home appliance, comprising:

an operation panel on which a function symbol is provided, having a surface for touch-sensitive manipulation,

a capacitive sensor touch diaphragm disposed below the operation panel, the capacitive sensor touch diaphragm having a sensor electrode disposed so as to overlap a function symbol and capable of changing capacitance by touching the surface of the operation panel corresponding to the function symbol,

a light-emitting device is arranged at the back of the touch membrane, after the light-emitting device is lightened, light rays pass through the touch membrane, corresponding function symbols can be distinguished from each other,

the light-emitting device comprises a substrate, a PCB (printed circuit board) and a filter membrane, wherein the substrate is provided with a plurality of mutually-separated through holes, and openings on the through holes correspond to functional symbols to be illuminated; the filter membrane is attached to the upper surface of the base body, a light-transmitting area is arranged corresponding to the through hole opening, and the rest light-tight areas are arranged; the PCB circuit board is arranged on the lower surface of the substrate, and a luminous body is arranged on the PCB circuit board corresponding to the opening at the lower part of the through hole.

Further, the filter film is a film made of plastic and transmitting light only corresponding to the through hole opening, has a light scattering effect, and is attached to the upper surface of the substrate of the display light source by gluing.

Preferably, the substrate is integrally injection molded and has upper and lower parallel surfaces.

Preferably, the touch membrane is a transparent ITO conductive film, and a plurality of sensor electrodes are etched on an ITO coating on the ITO conductive film.

Furthermore, the shape of the through hole is that the upper opening is larger than the lower opening is smaller.

Preferably, the longitudinal section of the through hole is in an inverted trapezoid shape.

Furthermore, a plurality of LED luminous particles are arranged in each through hole and used as a luminous body.

Preferably, the operation panel is a glass panel on which functional symbols are printed.

Further, the functional symbol is printed on the lower surface of the glass panel, and can be displayed on the upper surface of the glass panel by the light-emitting device.

There is also provided a washing machine having an operation display device as claimed in any one of the preceding claims.

The invention has the beneficial effects that: the corresponding light-emitting device comprises a substrate, a PCB (printed Circuit Board) and a filter membrane, wherein the three parts can be assembled in parallel, the substrate is integrally formed and provided with a plurality of mutually-separated through holes, and the openings of the through holes correspond to functional symbols to be illuminated; the filter membrane is attached to the upper surface of the base body, a light-transmitting area is arranged corresponding to the through hole opening, and the rest light-tight areas are arranged; the PCB circuit board install in the base plate lower surface corresponds through-hole lower part opening on it and installs the luminous body, adopts SMD granule LED on the PCB circuit board, and whole processing is convenient, convenient assembling, through-hole and attached filter membrane, can effectual control illumination scope and can play better spotlight effect, have better function symbol display effect.

Drawings

The invention is explained in more detail below with reference to the figures and examples.

Fig. 1 is a general view of an operation display device for home appliances according to the present invention;

fig. 2 is an exploded view of an operation display device for home appliances according to the present invention;

fig. 3 is a schematic view of an assembly structure of the light emitting device according to the present invention.

In the figure:

1. a glass panel; 2. a functional symbol; 3. a touch membrane; 4. a light filtering membrane; 5. a light-transmitting region; 6. a light-tight region; 7. a substrate; 8. a through hole; 9. a PCB circuit board; 10. LED light emitting particles.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Fig. 1 to 3 show a specific embodiment of an operation display device for home appliances according to the present invention, which is specifically applied to a washing machine, fig. 1 is an overall schematic view of a tub cover thereof, a front side of a glass panel 1 serves as an operation panel, which serves as a touch-sensitive control surface, and a plurality of function symbols 2 are disposed thereon, wherein the function symbols 2 may represent various washing procedures, such as "common use", "quick washing", "standard", "home textile", and the like, may also represent functions such as "air drying", "water retention", "detergent", and the like, and may also represent parameter items such as "water level", "soaking", "washing", "rinsing", "dewatering", and the like. In this embodiment, the corresponding functional symbols 2 are screen-printed on the lower surface of the glass panel 1, and a coating layer is disposed between the functional symbols and the glass panel, so that the user cannot see the contents of the functional symbols through the upper surface under normal conditions, and the contents of the corresponding functional symbols can be seen by the user through the glass panel 1 only under the condition of backlight, thereby maintaining the integrity and the aesthetic property of the panel (fig. 1 shows that all the functional symbols are visible corresponding to the backlight).

Fig. 2 shows an exploded view of the operation display device, as shown in the figure, a capacitive sensor touch membrane 3 is adhered below a glass panel 1, in this example, the touch membrane 3 is a transparent ITO conductive film, and a plurality of sensor electrodes (not shown in the figure) are etched on an ITO plating layer on the ITO conductive film; by touching the upper surface of the glass panel 1 corresponding to the function symbol 2, the capacitance of the sensor electrode provided on the touch film 3 in an overlapping manner corresponding to the function symbol can be changed, and further output to a control circuit connected thereto as a control signal.

The back of the touch membrane 3 is provided with a light-emitting device, after the light-emitting device is lightened, light rays pass through the touch membrane 3, and the corresponding function symbols 2 can be distinguished from one another so as to facilitate display and operation.

The light-emitting device comprises a substrate 7, a PCB (printed Circuit Board) 9 and a filter membrane 4, wherein the substrate 7 is provided with a plurality of mutually-separated through holes 8, and openings of the through holes 8 correspond to the functional symbols 2 to be illuminated; as shown in fig. 3, the filter membrane 4 is attached to the upper surface of the substrate 7, in this example, the filter membrane is attached to the upper surface of the substrate 7 by using an adhesive; the opening of the through hole is provided with a light-transmitting area 5, and the rest is a light-tight area 6; the PCB circuit board 9 is arranged on the lower surface of the base plate 7, and a luminous body is arranged on the PCB circuit board corresponding to the lower opening of the through hole. The shape of the through hole 8 is that the upper opening is larger than the lower opening is smaller, which is beneficial to the light gathering effect of the luminophor while enlarging the irradiation area, preferably, the longitudinal section of the through hole 8 can be set to be an inverted trapezoid.

The filter membrane 4 is a transparent film made of plastic and only corresponding to the through hole opening, has a light scattering effect, and can make the transmitted light uniform and soft.

The substrate 7 is integrally formed by injection molding and has a surface which is parallel up and down, so that the pasting of the filter membrane 4 and the positioning and installation of the PCB are more convenient.

A plurality of LED luminous particles 10 can be installed in each through hole 8 according to the irradiation area of the open hole and serve as a luminous body, the LED luminous particles 10 are installed in a patch mode, the size and the cost are less, and production and manufacturing are facilitated.

The operation display device can be applied to the washing machine of the embodiment, and can also be applied to other household appliances as a control panel.

In the invention, the substrate 7, the filter membrane 4 and the PCB 9 can be assembled in parallel, the assembly joint surfaces are planes, the substrate is integrally formed and can be integrally processed by injection molding, the LED light-emitting particles 10 are mounted by surface mounting, the integral processing and the assembly are convenient, and the processing and assembly cost can be greatly reduced; through the through hole and the attached filter membrane, the illumination range can be effectively controlled, a better light condensation effect can be achieved, and a better function symbol display effect is achieved.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention and the technical principles used, and any changes or substitutions which can be easily conceived by those skilled in the art within the technical scope of the present invention disclosed herein should be covered within the protective scope of the present invention.

Claims

1. An operation display device for an electric home appliance, comprising:

the LED illuminating device is characterized by comprising a substrate, a PCB (printed circuit board) and a filter membrane, wherein the substrate is provided with a plurality of mutually-separated through holes, the through holes are large in upper opening and small in lower opening, the longitudinal sections of the through holes are in an inverted trapezoid shape, and the upper openings of the through holes correspond to functional symbols to be illuminated; the filter membrane is attached to the upper surface of the substrate, a light-transmitting area is arranged corresponding to the through hole opening, and the rest light-tight areas are arranged; the PCB circuit board is arranged on the lower surface of the substrate, and a luminous body is arranged on the PCB circuit board corresponding to the opening at the lower part of the through hole.

2. The device according to claim 1, wherein the filter film is a film made of plastic that transmits light only in correspondence with the through-hole opening, has a light scattering effect, and is attached to the upper surface of the substrate of the display light source by gluing.

3. The operation display device according to claim 1, wherein the substrate is integrally injection-molded and has upper and lower parallel surfaces.

4. The operation display device according to claim 1, wherein the touch film is a transparent ITO conductive film, and a plurality of sensor electrodes are etched on an ITO plating layer on the ITO conductive film.

5. The operation display device according to any one of claims 1 to 4, wherein a plurality of LED light emitting particles are installed in each of the through holes as a light emitter.

6. The operation display device according to claim 1, wherein the operation panel is a glass panel on which functional symbols are printed.

7. The operation display device according to claim 6, wherein the functional symbol is printed on a lower surface of the glass panel, and is displayed on an upper surface of the glass panel by the light emitting device.

8. A washing machine characterized in that it has an operation display device as claimed in any one of the preceding claims.