Double-light-source display unit, knob, display module and household appliance

Abstract

The utility model discloses a double light source display unit, knob, display module and household electrical appliance, the double light source display unit includes two light sources that provide light in different directions, one group of light sources provides background light for the display unit, and the other group of light sources provides indicating light. The knob comprises a control circuit board, a background light source, indication light sources, a light guide plate and a diaphragm, the background light source and the indication light sources are annularly arranged, each touch area on the diaphragm corresponds to each indication light source, when a certain touch area is touched and selected, the indication light source corresponding to the touch area is lightened, and other indication light sources are extinguished. According to the utility model, the brightness of the background light source is lower than that of the display light source, so that when a certain key area is touched and controlled, the display light source is highlighted or flickers, and a function position can be indicated more strikingly. And different shapes and arrangement forms can be made, so that the requirements of various use scenes are met. And the knob can freely and smoothly slide in the middle position, so that the display effect is enriched while the use feeling is considered.

Description

Technical Field

[0001] This utility model belongs to the field of display screen technology, specifically relating to a dual-light source display unit, a knob, a display module, and a home appliance. Background Technology

[0002] As upstream manufacturers and users continue to raise new requirements for the display effects and functions of displays, the display effects and functions of home appliance displays are also constantly being upgraded and improved.

[0003] For example, touch control knobs on washing machines have replaced mechanical knobs in many situations. How can touch control knobs be made thinner, more convenient to use, and have better display effects? In the design process, it is necessary to ensure that when a product's touch control knob displays a background pattern, a bright light spot can appear in the corresponding area of ​​a function button when the button is slid to the touch, without affecting the display of the background pattern.

[0004] The applicant's prior patents for dual-light source displays and the products already in use cannot meet the above design requirements. Therefore, a completely new product needs to be designed to meet these requirements. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a dual-light source display unit, knob, display module and home appliance that uses two sets of light sources that project light from different directions to achieve functional indication.

[0006] Technical solution: To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A dual-light source display unit includes two light sources that provide light from different directions, one set of light sources providing background light for the display unit and the other set of light sources providing indicator light.

[0008] Furthermore, one set of light sources is located on the side, emitting light horizontally and then being displayed as background light after passing through the light guide plate, while the other set of light sources emits light vertically and then being displayed as indicator light after passing through the light guide plate.

[0009] Furthermore, the display unit includes a PCB board, a light guide plate, and a film arranged sequentially from bottom to top. The light source is soldered onto the PCB board, the background light source is located on the side of the light guide plate, and the indicator light source is located below the light guide plate.

[0010] Furthermore, the indicator light source is a bottom-emitting light source, which is embedded in a through hole opened on the PCB board.

[0011] Furthermore, a light-blocking element is provided on the outer periphery, and a panel is provided above the film.

[0012] Furthermore, the background light source and the indicator light source are arranged in a ring, strip, rectangle, arc, matrix and / or irregular shape.

[0013] A knob employs a dual-light source display unit, including a control circuit board, a backlight source, an indicator light source, a light guide plate, and a diaphragm. The backlight source and the indicator light source are arranged in a ring. Each touch area on the diaphragm corresponds to each indicator light source. When a touch area is selected, the corresponding indicator light source lights up, while the other indicator light sources turn off.

[0014] A display module employs a dual-light source display unit and / or the aforementioned knob. The display module further includes a control circuit board, a light-blocking component, and a diaphragm. The light source is disposed on the control circuit board, and the light-blocking component is disposed on the outer periphery of each dual-light source display unit.

[0015] Furthermore, a panel is provided above the diaphragm, the panel being made of acrylic or glass, and a shell is provided on its outer periphery.

[0016] A home appliance that employs one or more dual-light source display units and / or the aforementioned knobs, or employs a display module, wherein the home appliance is a washing machine, dishwasher, refrigerator, water heater, or water purifier, etc.

[0017] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0018] (1) The dual-light source display unit of this utility model sets the background light source and the display light source in different directions and on different horizontal planes. The background light source emits light from the side and after the light is uniformly distributed by the light guide plate, it illuminates the film to present the background pattern. The light from the display light source is set in a different direction from the light from the background light source, so that the light from the indicator light source is not affected by the background light and can be clearly displayed.

[0019] (2) In the dual-light source display unit of this utility model, the background light source and the display light source are different in terms of setting position and light direction, and the brightness of the light source is also different. The brightness of the background light source can be lower than that of the display light source, so that when a certain button area is touched and controlled, the display light source is highlighted or flashes, which can more conspicuously indicate the function position.

[0020] (3) The dual-light source display unit of this utility model has holes on the PCB board to accommodate the display light source. The display light source is soldered to the back of the PCB board through the connecting part, which can make the thickness of the entire display unit smaller.

[0021] (4) The dual-light source display unit of this utility model can be made into different shapes and arrangements to meet the needs of various usage scenarios. It can be used not only as a knob but also as a touch control. For example, the strip-shaped dual-light source display unit can realize linear sliding selection buttons, which is convenient to use.

[0022] (5) The knob of this utility model is made of a dual light source display unit. The display light source can be used as a point light source for high brightness and eye-catching display, and can slide freely and smoothly in the middle position, enriching the display effect while taking into account the user experience. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the circular arrangement structure of the dual-light source display units;

[0024] Figure 2 This is a schematic diagram of the rectangular arrangement structure of the dual-light source display units;

[0025] Figure 3 This is a schematic diagram of the strip-shaped arrangement structure of the dual-light source display unit;

[0026] Figure 4 This is a schematic diagram of light projection from a dual-light source display unit. Figure 1 ;

[0027] Figure 5 This is a schematic diagram of light projection from a dual-light source display unit. Figure 2 ;

[0028] Figure 6 This is a schematic diagram of the knob structure;

[0029] Figure 7 This is a schematic diagram of the display module's appearance and structure;

[0030] Figure 8 This is a schematic diagram of the back structure of the display module;

[0031] Figure 9 This displays an exploded view of the module. Detailed Implementation

[0032] The present invention will be further illustrated below with reference to specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0033] Example 1

[0034] like Figure 1-3 As shown, a dual-light source display unit includes a PCB board 1, a light guide plate 2, a film 3, a panel 4, a backlight source 5, an indicator light source 6, and a light-blocking component 7. The backlight source 5 and the indicator light source 6 are disposed on the PCB board 1, and the light-blocking component 7 is disposed on the upper surface of the PCB board 1 and located around the light source and the light guide plate 2. The film 3 covers the upper surface of the light guide plate 2 and the light-blocking component 7, and the panel 4 may also be disposed above the film 3.

[0035] The dual-light source display unit has two sets of light sources that provide light from different directions. One set of light sources provides the background light for the display unit, and the other set provides the indicator light. One set of light sources is located on the side, emits light horizontally, and is displayed as the background light after passing through the light guide plate 2. The other set of light sources emits light vertically and is displayed as the indicator light after passing through the light guide plate 2.

[0036] like Figure 4 and 5 As shown, the red line indicates the direction of light projection. In this embodiment, the background light source 5 is located on the side of the light guide plate 2 and is a side-emitting device. The light direction is horizontal. The light enters the light guide plate 2, and after being evenly distributed by the light guide plate 2, it illuminates the background pattern of the film 3. The light from the background light source 5 is directed upwards, passing through the light guide plate 2 and projecting upwards.

[0037] The indicator light source 6 and the background light source 5 are not on the same horizontal plane and have different light emission directions. The indicator light source 6 is located below the light guide plate 2 and is a bottom-emitting light source, embedded in the through hole 11 opened in the PCB board 1. The indicator light source 6 needs to penetrate the light guide plate 2 and be clearly displayed; therefore, the brightness, light, and direction of the indicator light source 6 need to be different from the background light source 5. To meet the installation requirements of the indicator light source 6, in this embodiment, a through hole 11 is opened in the PCB board 1 to accommodate the indicator light source 6. The indicator light source 6 is soldered to the back PCB board 1 through a connecting part 12.

[0038] The diaphragm 3 is an integrated touch-sensitive film, which is a composite of a touch film and a color film, and is attached to the upper surface of the background light guide plate 2 and the light blocker 7; alternatively, the touch film and color film of the diaphragm 3 are separate, with the color film attached to the upper surface of the light guide plate and the light blocker 7, and the touch film located on the inner surface of the panel 4. The touch film is electrically connected to the PCB board 1 via a ribbon cable. Background graphics and text are set on the color film, and the background pattern can be set according to the user's design requirements, such as a colorful background like the moon.

[0039] The background pattern and the portion corresponding to the indicator light source on diaphragm 3 are translucent, while the rest are opaque. An opaque layer can be formed on the back of the diaphragm using opaque ink printing, or an additional opaque film can be bonded onto the translucent diaphragm. Ink printing is preferred due to its simplicity and low cost.

[0040] The background light source 5 and the indicator light source 6 can be arranged in various shapes, such as rings, stripes, rectangles, arcs, matrices, and irregular shapes, to meet the needs of different scenarios. They also enable sliding touch control with different movement paths.

[0041] The working principle of the dual-light source display unit in this embodiment:

[0042] The light from the side-emitting background light source 5 is uniformly incident on the light guide plate 2 and then projected towards the diaphragm 3. After passing through the diaphragm 3, the light from the background light source 5 illuminates the background graphics. To distinguish between the background graphics and the indicator light source 6, the brightness of the background light source 5 is controlled to be lower than that of the indicator light source 6. The touch portion on the touch film corresponds to the position of the indicator light source 6. When the user touches a position of the indicator light source 5, the indicator light source lights up or flashes, and the brightness is relatively high.

[0043] Example 2

[0044] This embodiment provides a knob that employs the dual-light source display unit of Embodiment 1, including a control circuit board 12, a background light source 5, an indicator light source 6, a light guide plate 2, and a diaphragm 3. The background light source 5 and the indicator light source 6 are arranged in a ring. Each touch area on the diaphragm corresponds to each indicator light source 6. When a touch area is selected, the corresponding indicator light source 6 lights up, while the other indicator light sources 6 turn off. Each indicator light source 6 corresponds to a function button area. When the user slides and touches a function button area, the corresponding indicator light source 6 lights up or flashes to indicate that the current function is being operated.

[0045] A text or pattern layer 13 can be set on the outer periphery of the knob to indicate the currently selected function, such as washing, spin-drying, and drying of the washing machine.

[0046] Example 3

[0047] This embodiment provides a display module that uses the dual-light source display unit of Embodiment 1 and / or the knob of Embodiment 2. The display module also includes a control circuit board, a light blocking component, and a diaphragm. The light source is disposed on the control circuit board, and the light blocking component is disposed on the outer periphery of each dual-light source display unit.

[0048] A panel 4 is provided above the diaphragm. The panel 4 is made of acrylic or glass, and a shell 14 is provided on its outer periphery.

[0049] Example 4

[0050] This embodiment provides a home appliance that uses one or more dual-light source display units and / or the aforementioned knob, or uses a display module. The home appliance includes, but is not limited to, washing machines, refrigerators, dishwashers, water purifiers, tea dispensers, range hoods, water heaters, ovens, robot vacuums, air conditioners, or other home appliances.

[0051] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A dual-light source display unit, characterized in that: It includes two light sources that provide light from different directions. One set of light sources provides the background light of the display unit, and the other set of light sources provides the indicator light. One set of light sources is located on the side and emits light in the horizontal direction. After passing through the light guide plate (2), it is displayed as the background light. The other set of light sources emits light from the vertical direction and after passing through the light guide plate (2), it is displayed as the indicator light.

2. The dual-light source display unit according to claim 1, characterized in that: The display unit includes a PCB board (1), a light guide plate (2) and a diaphragm (3) arranged sequentially from bottom to top. The light source is soldered on the PCB board (1), the background light source (5) is located on the side of the light guide plate (2), and the indicator light source (6) is located below the light guide plate (2).

3. The dual-light source display unit according to claim 2, characterized in that: The indicator light source (6) is a bottom-emitting light source, which is embedded in the through hole opened in the PCB board (1).

4. The dual-light source display unit according to claim 1, characterized in that: A light-blocking element (7) is provided on the outer periphery, and a panel (4) is provided above the diaphragm (3).

5. The dual-light source display unit according to claim 1, characterized in that: The background light source (5) and the indicator light source (6) are arranged in a ring, strip, rectangle, arc, matrix and / or irregular shape.

6. A knob, characterized in that: The dual-light source display unit described in claims 1 to 5 includes a control circuit board, a background light source (5), an indicator light source (6), a light guide plate (2), and a diaphragm (3). The background light source (5) and the indicator light source (6) are arranged in a ring. Each touch area on the diaphragm (3) corresponds to each indicator light source (6). When a certain touch area is selected by touch, the corresponding indicator light source (6) is lit, and the other indicator light sources (6) are turned off.

7. A display module, characterized in that: The display module employs one or more dual-light source display units as described in any one of claims 1 to 5 and / or the knob as described in claim 6. The display module further includes a control circuit board, a light-blocking component, and a diaphragm (3). The light source is disposed on the control circuit board, and the light-blocking component is disposed on the outer periphery of each dual-light source display unit.

8. The display module according to claim 7, characterized in that: A panel (4) is provided above the diaphragm (3), the panel (4) being made of acrylic or glass, and a shell is provided on its outer periphery.

9. A household appliance, characterized in that: The appliance may be a washing machine, dishwasher, refrigerator, water heater or water purifier, and may employ one or more dual-light source display units as described in any one of claims 1 to 5 and / or the knob as described in claim 6, or the display module as described in claim 7.

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