CN220290393U

CN220290393U - Display device, touch display system, man-machine interaction system and household appliance

Info

Publication number: CN220290393U
Application number: CN202321801377.8U
Authority: CN
Inventors: 祁聪; 刘爱成; 石林; 李忠科
Original assignee: Diehl Abuck Fund Co ltd
Current assignee: Diehl Abuck Fund Co ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2024-01-02
Anticipated expiration: 2033-07-10

Abstract

The present utility model relates to a display device comprising: a first display unit; a second display unit perpendicular to the first display unit; at least one transmissive and reflective plate disposed to be inclined with respect to the first display unit and the second display unit such that light emitted from the first display unit and the second display unit can be emitted from the same side of the display device after being reflected or transmitted by the transmissive and reflective plate, respectively; and at least one first support and at least one second support for the plate having both transmission and reflection functions at the side of the display device, the first support having a first support slope parallel to the plate having both transmission and reflection functions, the second support having a second support slope corresponding to the first support slope such that the plate having both transmission and reflection functions is partially engaged between the first support slope and the second support slope. The utility model also relates to a touch display system, a man-machine interaction system and a household appliance.

Description

Display device, touch display system, man-machine interaction system and household appliance

Technical Field

The utility model relates to a display device, a touch display system, a human-computer interaction system and a household appliance.

Background

The display device mentioned at the outset is known, for example, from CN217386614U of the applicant itself. Wherein the superposition of the display contents of at least two display units is realized by a layer which is sandwiched between two prisms and has both transmission and reflection effects. However, practice has shown that such a solution is costly to manufacture and the production and assembly processes are complex.

Accordingly, a solution is needed that reduces manufacturing costs while simplifying production and assembly processes.

Disclosure of Invention

The object of the present utility model is to provide a display device, a touch display system, a man-machine interaction system and a household appliance, which enable a reduction in the production costs and a simplification of the production and assembly processes.

The object is achieved by a display device according to the utility model, a touch display system, a man-machine interaction system according to the utility model and a household appliance according to the utility model.

A first aspect of the utility model relates to a display device comprising: a first display unit; a second display unit disposed perpendicular to the first display unit; at least one transmissive and reflective plate disposed to be inclined with respect to the first and second display units such that light emitted from the first display unit and light emitted from the second display unit can be emitted from the same side of the display device after being reflected or transmitted by the transmissive and reflective plate, respectively; and at least one first support and at least one second support for the transmissive and reflective plate located at a side of the display device, wherein the first support has a first support slope parallel to the transmissive and reflective plate, and the second support has a second support slope corresponding to the first support slope such that the transmissive and reflective plate is partially nested between the first and second support slopes.

Within the scope of the present utility model, a plate having both transmission and reflection is understood to be a plate whose thickness is significantly smaller than its length and width, said plate being capable of light transmission and of light reflection. It should be noted that the plate having both transmission and reflection functions may be a plate beam splitter, which is exemplified by a plate beam splitter that performs both light transmission and light reflection functions, that is, an incident light portion is transmitted by the plate having both transmission and reflection functions and a light portion is reflected by the plate. The flat spectroscope may be made of, for example, a coated glass plate or a plastic plate, for example, a half-mirror glass or a half-mirror acrylic plate, etc. The plate having both the transmission and reflection functions may also realize the light transmission and reflection functions in different states thereof, and examples thereof may be a glass plate or a plastic plate coated with an electrochromic film capable of realizing the total reflection function, the total transmission function, or the partial transmission and partial reflection function, respectively, under the application of different voltages. It is to be understood that the plate having both transmission and reflection functions may not be limited to the above-listed examples, and that all the plate members capable of achieving light transmission and capable of achieving light reflection functions may be used as the plate having both transmission and reflection functions according to the present utility model.

The utility model provides that the plate with both transmission and reflection effects is arranged obliquely with respect to the first display unit and the second display unit, so that the light emitted by the first display unit and the light emitted by the second display unit can be emitted from the same side of the display device after being reflected or transmitted by the plate with both transmission and reflection effects, respectively. Specifically, on the one hand, light emitted by the first display unit is emitted from a side of the display device opposite to the first display unit after being transmitted by the plate having both transmission and reflection effects, and light emitted by the second display unit is emitted at least partially from a side of the display device opposite to the first display unit after being reflected by the plate having both transmission and reflection effects. On the other hand, light emitted by the second display unit is emitted from the side of the display device opposite to the second unit after being transmitted by the plate having both transmission and reflection effects, whereas light emitted by the first display unit is also emitted at least partially from the side of the display device opposite to the first unit after being reflected by the plate having both transmission and reflection effects. Thus, the user can see both the display content of the second display unit and the display content of the first display unit when looking at the respective side of the display device from which the light emitted by the first display unit and the second display unit is at least partly emitted after being reflected or transmitted by the plate having both transmission and reflection effects, respectively. By properly using the plate having both transmission and reflection functions, the user can observe the display contents of the second display unit when only the second display unit is lit; when only the first display unit is lighted, the user can observe the display content of the first display unit; and when the first display unit and the second display unit are simultaneously lighted, the user can also simultaneously observe the display contents of the first display unit and the second display unit. Thereby enabling the user to be provided with more and more abundant, somewhat variable display content.

In order to fix and hold the plate with both transmission and reflection functions, the utility model provides that: the display device comprises at least one first support and at least one second support for the plate with both transmission and reflection on the side of the display device, wherein the first support has a first support slope parallel to the plate with both transmission and reflection, and the second support has a second support slope parallel to the plate with both transmission and reflection, corresponding to the first support slope, which is partly engaged between the first support slope and the second support slope. The first support and the second support are in this case partially or sectionally clamped between them in such a way that the first support bevel and the second support bevel face each other, the plate having both transmission and reflection effects. That is, the first support slope of the first support member is abutted against one side of the plate having both transmission and reflection effects in the thickness direction thereof, and the second support slope of the second support member is abutted against the other side of the plate having both transmission and reflection effects in the thickness direction thereof, so that the plate having both transmission and reflection effects is partially sandwiched between the first support slope and the second support slope (i.e., the section of the plate having both transmission and reflection effects corresponding to the first support slope and the second support slope). The other parts of the plate with both transmission and reflection are freely cantilevered, that is to say, the other parts of the plate with both transmission and reflection are not blocked by the first and second support members except for the section of the plate with both transmission and reflection which is engaged between the first and second support inclined surfaces, so that light energy emitted from the first or second display unit is reflected or transmitted on the non-blocked section of the plate with both transmission and reflection. It will be appreciated that by the planar abutment of the first and second bearing bevels against the plate having both transmissive and reflective effects, localized stress spikes can be avoided while ensuring retention of the plate having both transmissive and reflective effects, which are often undesirable for plate members, particularly glass plates, as localized stress spikes can cause damage or even breakage of relatively fragile plate members. By the first support and the second support according to the present utility model, it is possible to omit a prism as a carrier of a layer having both transmission and reflection effects, and to secure holding and fixing of a plate having both transmission and reflection effects while reducing manufacturing costs and overall weight of the display device.

According to one embodiment of the utility model, the transmissive and reflective plates are arranged at 45 ° to the first and second display units, respectively, such that light emitted by the first display unit is co-directional with light emitted by the second display unit after being reflected by the transmissive and reflective plates. Here, the light emitted from the first display unit is in the same direction as the light emitted from the second display unit after being reflected by the plate having both transmission and reflection effects, and the light emitted from the second display unit is emitted after being transmitted by the plate having both transmission and reflection effects. Thereby, the first display unit and the second display unit may in particular have substantially equal areas. When looking at the second display unit, the user can see both the transmitted complete non-deformed display content of the second display unit and the reflected complete non-deformed display content of the first display unit. Similarly, the user can see both the transmitted complete non-distorted display of the first display unit and the reflected complete non-distorted display of the second display unit when looking at the first display unit.

According to one embodiment of the utility model, the first support is assigned to the first display unit and the second support is assigned to the second display unit. Thereby, the first support is integrated with the first display unit and the second support is integrated with the second display unit. By having the support members assigned to the respective display units, the number of overall parts of the display device can be effectively reduced. For example, the first support may be produced as a separate part and pre-assembled in the first display unit, while the second support may be produced as a separate part and pre-assembled in the second display unit. In the final assembly of the display device, the first display unit together with the associated first support can be provided as an integral module, while the second display unit together with the associated second support can be provided as an integral module. Therefore, compared with the case that the first supporting piece and the second supporting piece are respectively provided as independent parts, the number of parts in final assembly can be reduced, so that the assembly process is simplified, the time cost is reduced, and the manufacturing efficiency is improved. In addition, since the first display unit and the second display unit should be disposed on both sides of the plate having both transmission and reflection effects, and the first support and the second support also sandwich the plate having both transmission and reflection effects partially therebetween in a manner facing each other, the disposition relationship of the display unit and the support on the same side of the plate having both transmission and reflection effects particularly meets the assembly logic and modularization requirements.

According to an embodiment of the present utility model, the first display unit and the second display unit respectively include a display assembly for generating display contents and a stand for the display assembly, the first support is integrally constructed with the stand of the first display unit, and the second support is integrally constructed with the stand of the second display unit. The respective support is thus constructed as an integral part of the holder of the respective display unit. For example, the support and the corresponding bracket may be integrally manufactured via an injection molding process or an additive manufacturing process. In general, there is a corresponding stand for the display assembly itself in the display unit in order to provide protection or support for the display assembly or to facilitate the mounting positioning of the display assembly in the display device. By the integrated construction of the support with the respective stand inherent to the display unit, the support can be manufactured at the same time as the stand of the display unit, whereby the separate manufacturing steps of the support are further omitted, further simplifying the production and assembly process.

According to one embodiment of the utility model, a receptacle for receiving a part of the plate having both transmission and reflection functions is formed between the first support and the second support. Here, the receiving portion means that it has a size and shape corresponding to the portion of the plate having both transmission and reflection functions. For example, in the case where the end portions in the longitudinal direction of the plate having both the transmissive and reflective effects are held by the first support and the second support, the receiving portion may have a size corresponding to the width and thickness of the plate having both the transmissive and reflective effects. The plate having both transmission and reflection effects may be held in the receptacle, for example by a form fit. Alternatively or additionally, the plate having both transmission and reflection effects can also be fixed in the receptacle, for example, in a material-locking manner. For example, the plate having both transmission and reflection effects can be fixed in the receptacle, for example by means of an adhesive or by means of an ultrasonic welding process, and can thus be connected to the first support and the second support.

According to one embodiment of the utility model, the first bearing is configured with a first step on the first bearing ramp, and the second bearing is flat on the second bearing ramp; or the second support is configured with a second stepped portion on the second support ramp and the first support is flat on the first support ramp; or the first support member is configured with a first step on the first support ramp and the second support member is also configured with a second step on the second support ramp. The support structure of the first support element on the first support slope (for example a step or a plane) and the support structure of the second support element on the second support slope together form a receptacle for receiving a part of the plate having both transmission and reflection effects. Since the two-piece configuration of the receiving portion helps to simplify the assembly of the display apparatus, for example, one of the first support and the second support may be placed first with a stepped portion, and then the plate having both transmission and reflection effects may be placed in the stepped portion such that the plate having both transmission and reflection effects is held in the stepped portion without sliding down along the support slope due to the inclination angle of the support slope with respect to the horizontal plane. Subsequently, the other of the first support and the second support may be disposed on the plate having both transmission and reflection effects, thereby holding the plate having both transmission and reflection effects between the first support and the second support. This embodiment is particularly advantageous when the display unit is provided as a one-piece module with the associated support, since in this module the support slope of the support is 45 ° relative to the plane of extension of the display unit or display assembly, so that when the display unit or display assembly is placed horizontally, the support slope of the support naturally tilts relative to the horizontal, whereby there is the possibility that the plate with both transmission and reflection effects slides down the flat support slope. By providing the step, the positioning of the plate with both transmission and reflection on the supporting ramp can be ensured by the side walls of the step, on the other hand the assembly process of the display device is also optimized, since no additional hand or other auxiliary tool is required to hold the plate with both transmission and reflection on the support of the display unit located below before pressing the support of the display unit located above against the plate with both transmission and reflection.

According to one embodiment of the utility model, the holder of the first display unit is configured with a receiving groove flush with the first step and/or the holder of the second display unit is configured with a receiving groove flush with the second step. In this embodiment, a receiving groove is formed on the support of the display unit flush with the step, so that a plate having both transmission and reflection effects can be additionally held and fixed by means of the support. In particular, the receiving groove may also extend in the entire longitudinal direction of the bracket of the first display unit and/or the bracket of the second display unit, thereby providing support for the freely overhanging portion of the plate having both transmissive and reflective effects, effectively improving the stability of the plate having both transmissive and reflective effects in the display device.

According to one embodiment of the utility model, the first support and the second support are arranged in pairs on both end sides of a plate having both transmission and reflection effects. In this embodiment, the support members at both ends of the plate having both transmission and reflection functions can hold and fix the plate having both transmission and reflection functions, and a large area at the center of the plate having both transmission and reflection functions is not shielded by the support members, so that the entire display contents can be displayed in a large area as much as possible. In other embodiments, additional support members may be provided in the region between the two ends of the plate that both transmit and reflect. For example, in case the display content of the display unit is presented in the form of icons or virtual "keys", the support may be arranged in an area between two adjacent icons or "keys", which area is not used by the icons or "keys" and thus does not affect the display effect of the display device. In this way, in the case of a relatively large length of the plate with both transmission and reflection, it is possible to additionally hold and support the plate with both transmission and reflection in the central region thereof by means of the support, so that a reliable fixing and holding action is provided over the entire length of the plate with both transmission and reflection.

According to one embodiment of the utility model, the display device has the basic shape of a cuboid, the first display unit forms a bottom surface of the cuboid, the second display unit forms a rear surface of the cuboid, i.e. a surface facing away from the user, and the first and second support elements arranged in pairs are respectively spliced into two opposite side surfaces of the cuboid perpendicular to the bottom surface and the rear surface. In the present utility model, a rectangular parallelepiped is understood to be a straight quadrangular prism having a rectangular bottom surface. In particular, the rectangular parallelepiped also includes a regular square (i.e., a square-based regular square) and a cube (i.e., a square or a regular hexahedron). The plate with both transmission and reflection effects and therefore the first bearing inclined surface of the first bearing and the second bearing inclined surface of the second bearing form an angle of 45 ° with the bottom surface and the rear surface of the cuboid. Here, six faces of a rectangular parallelepiped are defined as opposing bottom and top faces, opposing front and back faces, and opposing two side faces. Such a definition refers only to the positions of the first display unit and the second display unit and is not related to the spatial arrangement of the rectangular solid.

According to one embodiment of the utility model, the front face of the cuboid opposite the second display unit serves as a display face and/or the top face of the cuboid opposite the first display unit serves as a display face. Here, both a surface of the rectangular parallelepiped opposite to the first display unit and a surface opposite to the second display unit may be used as the display surface. Thus, in addition to the technical advantages that the display device itself can provide, flexibility or convenience is further provided for the installation and use of the display device. For example, when the display device is incorporated into an industrial product, in particular a household appliance, the front side opposite the second display unit and/or the top side opposite the first display unit can be exposed according to its own layout plan. For example, in a range hood or in a household appliance such as a washing machine, dryer, refrigerator, etc., the display is provided on a vertically extending surface of the housing of the household appliance, while in a range-up surface the display is provided on a range-up surface. Since the bottom side opposite the first display unit and/or the side opposite the second display unit adjoins the same edge of the cuboid, it is also possible to use either one of the two faces adjoining the edge as the display face in the case of a display device arranged at the edge of an industrial product, in particular a household appliance. In particular, it is also possible to use both sides adjoining the edge as display sides.

According to one embodiment of the utility model, a cover plate is provided on the front side of the cuboid opposite the second display unit and/or a cover plate is provided on the top side of the cuboid opposite the first display unit. The cover plate can effectively prevent the display equipment from entering ash and water, thereby effectively improving the functional reliability and the service life of the display equipment. The cover plate can be made of transparent or opaque material. For example, if a front surface of the display device opposite to the second display unit is used as the display surface, the display device may provide a cover plate only on the top surface opposite to the first display unit; if the top surface of the display device opposite to the first display unit is used as the display surface, the display device may be provided with a cover plate only on the front surface opposite to the second display unit. And if both the front surface of the display device opposite to the second display unit and the top surface opposite to the first display unit are used as display surfaces, the display device may not have a cover plate. In this case, for example, in the mounted state of the display device in the household appliance, the display device can be directly attached to the panel of the household appliance, so that the display device can be closed off from the outside in the region of the display surface by the panel of the household appliance, so that no cover plate has to be provided on the display surface.

In a further embodiment, a transparent cover plate may also be provided on the display surface in order to improve the tightness of the display device itself. In contrast to the installation of the display device from the interior of the household appliance with the display surface in close contact with the panel of the household appliance, the embodiment in which a transparent cover plate is provided on the display surface of the display device is particularly suitable for the following installation of the display device: at least a portion of the display device, in particular the display surface of the display device, is directly exposed to the outside of the household appliance. Examples of this may be that an opening is provided in a housing or panel of the household appliance, with a display surface of the display device being aligned with the opening, or that at least a part of the display device protrudes from the interior of the household appliance through the opening, so that the display device is partly exposed to the external environment. In this case, providing a transparent cover plate on the display surface of the display device can reliably protect the internal elements of the display device from contamination and damage while not affecting the display effect.

According to one embodiment of the utility model, the cover plate is integrally formed with the carrier. For example, the cover plate located at the front surface may be integrally formed with the bracket of the first display unit or manufactured by means of two-shot molding; and the cover plate on the top surface can be integrally formed with the bracket of the second display unit or manufactured by means of two-shot molding. Furthermore, the cover plate and the carrier can be manufactured from the same or different materials, so that the materials for the cover plate and the carrier can be selected specifically according to the actual requirements. For example, the cover plate may be made of a transparent material, while the bracket may be made of an opaque material.

In other embodiments, the cover plate can be produced separately and preassembled, for example, in a form-fitting, material-fitting or force-fitting manner, on the respective display unit.

According to an embodiment of the utility model, the at least one plate having both transmissive and reflective effects is a first plate and a second plate, the display device comprising a third display unit arranged on a face of the display device opposite to the first display unit, and the first plate being arranged at 45 ° to the first display unit and the second display unit, respectively, and the second plate being arranged at 45 ° to the second display unit and the third display unit, respectively, such that light emitted by the first display unit and the third display unit after reflection by the first plate and the second plate, respectively, is co-directional with light emitted by the second display unit. Here, the third display unit may be disposed parallel to the first display unit and facing each other, and the second display unit may extend between the first display unit and the third display unit perpendicular to the first display unit and the third display unit. Thus, the first plate and the second plate may be at 90 ° to each other. In order to fix and hold the second plate, the display apparatus may include a third support having a third support slope parallel to the second plate, and the second support further having another support slope corresponding to the third support slope, so that the second plate may be held between the second support and the third support by the another support slope and the third support slope.

According to one embodiment of the utility model, the display device comprises a housing frame, the first display unit and the second display unit being mounted on the housing frame such that the housing frame at least partially encloses the first display unit and the second display unit.

According to one embodiment of the utility model, the housing frame is made of metal and/or the housing frame comprises a display device mounting part configured for mounting a display device on a household appliance.

According to an embodiment of the present utility model, a display assembly of at least one of the first display unit and the second display unit includes a circuit board integrated with an LED element and a display film with display icons, and the stand is disposed between the circuit board and the display film. Here, one or both of the first display unit and the second display unit can be realized in a simple and low-cost manner, that is, the display icons on the display film are illuminated by the LED elements, and the illuminated display icons can be observed from the corresponding display surfaces by the user after being transmitted or reflected by the plate having both transmission and reflection effects, so that the related functions or states and the like can be known. The display icon may be configured as a transparent area or a hollowed-out area corresponding to the display content. Preferably, the display icons are printed on the display film by screen printing or ink-jet printing. The transparent region refers to a region that is transparent to light on the substrate of the display film, and may be colored, while the hollowed-out region is a region hollowed out in the substrate of the display layer. The transparent region or hollow region may transmit light emitted by the LED element and present icons conforming to the display content, which may include, for example, text, numbers, patterns, symbols, and the like. Further, in order to sufficiently diffuse light emitted from the point light source of the LED element into a surface light to achieve uniform light efficiency, it is conceivable to integrate a light diffusion layer into the display film or print light diffusion ink onto the display film. However, it is also possible to use a separate light-diffusing film, which can be combined with the display film in a superimposed manner, in particular to connect, for example by adhesion, the light-diffusing film to the display film.

According to one embodiment of the utility model, the holder comprises a plurality of cavities, each cavity accommodating at least one of the LED elements for illuminating a display icon arranged on the display film corresponding to the cavity. In this embodiment, a plurality of LED elements may be arranged on one circuit board at intervals, and the LED elements are respectively divided into a plurality of groups by the bracket and a plurality of cavities thereof, and each group of LED elements may include one or more LED elements. A display icon may be disposed on the display film corresponding to each cavity. In this way, when a group of LED elements is illuminated, the display icons above the cavity can be illuminated correspondingly through the vertically extending cavity in the support. Advantageously, in case a group of LED elements comprises a plurality of LED elements, only one or a few of the LED elements may be lit accordingly. For example, in the case where four LED elements are accommodated in one cavity, one, two, three, or four LED elements may be lit, respectively, whereby information can be conveyed to the user with the brightness of the lit icon. It is also possible to illuminate the individual LED elements of a group of LED elements separately in a sequence, such as a row of LED elements in a running light, a number of LED elements arranged in a ticker-type illumination cycle or a number of LED elements in a breathing light. It is also possible that the plurality of LED elements have different colors, respectively, to be lit separately or in combination as desired.

According to one embodiment of the utility model, the display component of at least one of the first display unit and the second display unit is a nixie tube display or a dot matrix display screen. The nixie tube display is especially a segment type LED nixie tube. A dot matrix display screen is understood here to mean a screen composed of regularly arranged pixels, which is capable of displaying graphical display contents. In the simplest case, the dot matrix display may be an array of LEDs. In particular, the dot matrix display screen is a TFT display screen, an OLED display screen or a monochromatic LCD display screen, etc. Thus, the icon display in addition to the conventional display by means of turning on and off the LEDs can also be useful in providing the user with more rich dynamic information, in particular graphical display content.

A second aspect of the present utility model relates to a touch display system including: a display device according to the first aspect of the utility model; and at least one touch film for detecting a user operation, the touch film being disposed on a top surface of the display device opposite to the first display unit and/or on a front surface of the display device opposite to the second display unit. In addition to the technical advantages brought about by the display device according to the present utility model, by providing a touch film, the operation of the user can be advantageously detected. In addition, the touch display system can avoid the arrangement of keys or buttons around the surface of the display device, improve the integration level of the system and enable the touch display system to have a concise appearance.

According to one embodiment of the utility model, the touch film is arranged on a transparent cover plate of the display device. Therefore, a user can conveniently and directly operate the touch display system or the cover plate of the display device thereof, particularly the cover plate configured to the display surface, particularly the display content of the corresponding display surface is subjected to targeted operation, so that the user can obtain visual and convenient interaction, and the use experience is optimized.

According to one embodiment of the present utility model, the touch display system outputs a control instruction and/or changes the display of the display device according to a user operation detected by the touch film. The touch display system may be used as an input/output device of an industrial product, in particular, a household appliance, display functions and states of the industrial product, in particular, the household appliance to a user, and provide control instructions from the user to the industrial product, in particular, the household appliance, according to an operation detected by the touch film. Further, the display of the display device may also be changed by an operation detected in accordance with the touch film, for example, by sliding to switch whether the first display unit performs display or the second display unit or the third display unit performs display as necessary.

A third aspect of the utility model relates to a human-machine interaction system comprising: a display device according to the first aspect of the utility model; and at least one infrared operation unit for detecting a user operation, wherein the infrared operation unit is provided in at least one of the respective display units of the display device or replaces one of the respective display units of the display device with the infrared operation unit. In some embodiments, in the human-computer interaction system, the infrared operation unit may be provided in one or more display units of the display device. In other embodiments, it is also possible to replace one of the display units in the display device with an infrared operating unit. For example, the first display unit may be replaced with an infrared operation unit, so that the human-computer interaction system includes a second display unit and an infrared operation unit disposed perpendicular to the second display unit. The second display unit may also be replaced by an infrared operation unit, so that the human-computer interaction system comprises a first display unit and an infrared operation unit arranged perpendicular to the first display unit. By providing an infrared operation unit, the operation of the user can be advantageously detected. In addition, the man-machine interaction system can avoid the situation that keys or buttons are arranged around the surface of the display equipment in a consuming mode, improves the integration level of the system, and enables the man-machine interaction system to have a concise appearance.

According to one embodiment of the utility model, the at least one infrared operating unit is configured as a gesture operating unit and/or as a touch operating unit. The infrared operating unit can be constructed in various ways. For example, in the man-machine interaction system, only the gesture operation unit may be provided, only the touch operation unit may be provided, or both the gesture operation unit and the touch operation unit may be provided, and it is also possible to provide an infrared operation unit having both the gesture operation and the touch operation functions. Here, the user may perform a touch operation by touching a certain position on the display surface of the display device in a contact manner; and/or the user may gesture contactlessly over the display surface of the display device. The gesture may include, for example, a swipe, a swing, a hover, a slap, a lift, etc. In this case, the human-computer interaction system can be kept clean and sanitary and pollution-free by using non-contact gestures.

According to one embodiment of the utility model, each infrared operating unit comprises at least two infrared transmitting tubes, at least one infrared receiving tube, a control circuit and a signal processor, the control circuit alternately switching on and off the infrared transmitting tubes and/or the infrared receiving tubes, and the signal processor receiving and processing signals generated by the infrared receiving tubes. Examples of the infrared operation unit are described in patent documents CN111487878A and CN113495615A disclosed by the present applicant.

According to one embodiment of the utility model, the plurality of infrared transmitting tubes and the plurality of infrared receiving tubes are alternately arranged along the direction of extension of the infrared operating unit. In particular, in the simplest embodiment variant, the infrared operating unit may comprise two infrared transmitting tubes, an infrared receiving tube, a control circuit and a signal processor, wherein the two infrared transmitting tubes are arranged alternately with respect to the infrared receiving tube in the direction of extension of the infrared operating unit at a distance from one another. Here, the respective infrared elements may be arranged in the direction of the long side of the display device in the order of one infrared emitting tube, one infrared receiving tube, and one infrared emitting tube. In this case, the two infrared transmitting tubes are alternately switched on by the control circuit during operation and emit infrared radiation which can be reflected when the user's hand approaches and received by the intermediate infrared receiving tube. The infrared emitting tube may be an infrared light emitting diode and the infrared receiving tube may be configured as an infrared photodiode or an infrared phototransistor. The signal processor can process and analyze signals generated when the infrared receiving tube receives the reflected infrared rays, so that gestures and/or touches of a user can be detected. The signal processor may include a signal conditioning circuit for an infrared receiver tube and a microprocessor unit for analyzing the signals. For example, by analyzing the timing and signal amplitude of the reflected infrared light, it can be determined that the user's hand is first present over one infrared emitting tube and then immediately over the other infrared emitting tube, thereby determining that the user's hand is slipping or waving from over one infrared emitting tube to over the other infrared emitting tube.

In a further, more complex embodiment, the infrared operating unit comprises a plurality of infrared transmitting tubes, which can be arranged alternately with the plurality of infrared receiving tubes at a distance from one another in the direction of extension of the infrared operating unit, a control circuit which can be used to control the switching on and off of the individual infrared transmitting tubes and the individual infrared receiving tubes, and a signal processor which can be used to receive and process the signals generated by the plurality of infrared receiving tubes and to determine the coordinate position of the user's hand above the infrared operating unit in the direction of extension. In particular, the control circuit controls the switching on and off of the respective infrared transmitting tube and the respective infrared receiving tube in a time-division multiplexed manner. For example, the control circuit may turn on all infrared receiving tubes simultaneously while turning on each infrared transmitting tube in turn; or one or more infrared receiving and transmitting groups are sequentially connected, and each infrared receiving and transmitting group comprises at least one infrared transmitting tube and at least one infrared receiving tube which are adjacent; or a plurality of non-adjacent infrared receiving and transmitting groups are connected in a staggered manner in time, and each infrared receiving and transmitting group comprises at least one infrared transmitting tube and at least one infrared receiving tube which are adjacent.

In particular, in this embodiment, whether the infrared operation unit is a gesture operation unit or a touch operation unit can be manipulated by setting or adjusting the light emission intensity of the infrared emission tube. Since the infrared ray needs to undergo refractive loss at the interface between the solid and the air twice when detecting the gesture operation, the infrared transmitting tube needs to provide a larger luminous intensity to make the infrared receiving tube receive the reflected infrared ray, and a larger driving current should be provided for the infrared transmitting tube. In contrast, if the infrared operation unit detects only a touch operation, only a smaller light emission intensity and thus a smaller driving current are required. It is also advantageous to drive the infrared emitting tube at different currents at different times. It is particularly advantageous if both touch and gesture operations are detected by the same infrared control unit in a time-multiplexed manner.

It should be noted that the at least two infrared transmitting tubes and the at least one infrared receiving tube do not have to be arranged parallel to one side of the infrared operating unit, do not have to be arranged along a straight line, and do not have to be alternately arranged. The infrared transmitting tubes and the infrared receiving tubes are preferably arranged alternately in this order of one infrared transmitting tube and one infrared receiving tube. This means that the infrared emitting tubes and the infrared receiving tubes may be located on a straight line parallel to the long sides of the infrared operating unit, on a straight line along the diagonal of the infrared operating unit or also on a fold line. The infrared transmitting tube and the infrared receiving tube can be flexibly arranged. Preferably, the distance between these infrared transmitting tubes and the infrared receiving tubes is between 5mm and 50 mm.

According to one embodiment of the present utility model, at least one of the display units of the display device includes a circuit board integrated with an LED element, a display film with a plurality of display icons, each of which can be spatially configured with an infrared transmitting tube and an infrared receiving tube for detecting a user's operation of the display icon, and a stand between the circuit board and the display film. In this case, in a cost-effective embodiment of the display device, a pair of infrared transmitting and infrared receiving tubes is assigned to each display icon, so that the operation for each display icon can be detected in a targeted manner. For example, a pair of infrared transmitting tubes and infrared receiving tubes may be provided on one side of one display icon, the upper side. Here, in order to better distinguish the received signals, a pair of infrared transmitting tubes and infrared receiving tubes, which are provided to another display icon adjacent to the display icon, may be provided at the lower side of the other display icon. The order in which the infrared transmitting tubes and the infrared receiving tubes are arranged along the display unit may not be limited in these embodiments.

However, the number of icons displayed need not be exactly equal to the logarithm of the infrared transmitting and receiving tubes. This means that only a pair of infrared transmitting tubes and infrared receiving tubes need to be present around each display icon, and that one or both of the pair of infrared transmitting tubes and infrared receiving tubes may also be multiplexed to an adjacent display icon. In this case, a plurality of infrared transmitting tubes and a plurality of infrared receiving tubes are required to be alternately arranged along the extending direction of the display unit in which the infrared operating unit is located. This means that, for the case of four display icons, only five infrared elements may be provided in the order of transmit-receive-transmit-receive-transmit, with the middle three tubes being provided in the area between the two icons, in which case the operation for each display icon can be detected as well.

According to one embodiment of the utility model, the infrared operating unit is mounted on the circuit board integrated with the LED element, and a light limiting structure for an infrared emitting tube and for an infrared receiving tube is formed in the holder. This embodiment can provide a highly integrated arrangement in which the respective electronic components of the display device and the infrared operation unit are integrated on one circuit board, thereby facilitating manufacturing and assembly. Meanwhile, the bracket for the display unit can be also used for limiting light of the infrared transmitting tube and the infrared receiving tube. The light limiting structure may advantageously be a cavity housing an infrared transmitting tube or an infrared receiving tube, such that light leakage from the infrared transmitting tube to the infrared receiving tube may be isolated by the light limiting structure and the angle of transmission and reception may be limited to reduce interference of ambient light. Preferably, the height of the light limiting structure can be equal to or exceed the top ends of the infrared transmitting tube and the infrared receiving tube.

According to an embodiment of the present utility model, the human-computer interaction system outputs a control instruction and/or changes the display of the display device according to the user operation detected by the infrared operation unit. The man-machine interaction system may be used as an input/output device for industrial products, in particular household appliances, to display functions and states of the industrial products, in particular household appliances, to a user, and to provide control instructions from the user to the industrial products, in particular household appliances, in accordance with operations detected by the infrared operation unit, such as gesture operations or touch operations. In addition, the display of the display device can also be changed by an operation detected by the infrared operation unit, for example by switching whether the first display unit displays or the second display unit or, if necessary, the third display unit displays by a swipe gesture.

A fourth aspect of the utility model relates to a household appliance, characterized in that the household appliance comprises a display device according to the first aspect of the utility model and/or a touch display system according to the second aspect of the utility model and/or a human-machine interaction system according to the third aspect of the utility model.

According to one embodiment of the utility model, the display device is mounted within the household appliance such that the display device rests against a panel of the household appliance from the inside of the household appliance. In this embodiment, the touch film of the touch display system may preferably be integrated on a panel of the home appliance. In particular, the touch film may be disposed in an area of a panel of the home appliance corresponding to a display surface of the display device. Thereby, the detection of the user operation may be achieved by a touch film located on a panel of the home appliance.

According to one embodiment of the utility model, the touch display system and/or the human-machine interaction system is mounted inside the household appliance and/or at least partially exposed outside a panel of the household appliance.

According to one embodiment of the utility model, the household appliance is a range hood, a stove, a refrigerator, an oven, a dishwasher, a food processor, a washing machine, a clothes dryer, a sound, a television, a smart tap or a smart toilet.

Other features of the utility model will be apparent from the accompanying drawings and from the detailed description. All of the features and feature combinations mentioned above in the description and those which are mentioned below in the description and/or which are shown individually in the drawings can be used not only in the respectively given combination but also in other combinations or in isolation.

Drawings

Fig. 1 shows a perspective view of a first embodiment of a display device according to the utility model;

FIG. 2 shows a perspective view, partially cut away, of the display device of FIG. 1;

FIG. 3 shows a schematic diagram of the display device of FIG. 1;

FIG. 4 shows an exploded view of the display device of FIG. 1;

FIG. 5 shows a schematic cross-sectional view of one embodiment of a first support, a second support and a plate with both transmissive and reflective effects of a display device according to the utility model;

FIG. 6 shows in exploded view the first support, the second support and the plate of FIG. 5 with both transmissive and reflective effects;

fig. 7 shows a schematic cross-sectional view of another embodiment of a first support, a second support and a plate with both transmissive and reflective effects of a display device according to the utility model;

FIG. 8 is an exploded view of the first support, the second support and the plate of FIG. 7 with both transmissive and reflective effects;

Fig. 9 shows a cross-sectional view of a bracket of a first display unit of the display device according to fig. 1 together with a plate having both transmissive and reflective effects;

fig. 10 shows a perspective view looking into the underside of the display device of fig. 1, wherein the second display unit has not yet been mounted to the housing frame;

fig. 11 shows a perspective view looking into the back side of the display device of fig. 1, wherein the second display unit has not yet been mounted to the housing frame;

fig. 12 shows a perspective view of a second embodiment of a display device according to the utility model;

FIG. 13 shows a perspective view, partially cut away, of the display device of FIG. 12;

FIG. 14 shows an exploded view of the display device of FIG. 12;

fig. 15 shows a schematic view of a third embodiment of a display device according to the utility model;

fig. 16 shows a schematic view of a fourth embodiment of a display device according to the utility model;

FIG. 17 shows a schematic diagram of a touch display system in accordance with the present utility model;

FIG. 18 shows a schematic diagram of a human-machine interaction system according to the present utility model;

fig. 19 shows a schematic view of a household appliance according to the present utility model.

Detailed Description

In the various embodiments described differently, identical elements are provided with the same reference numerals or the same element names, wherein the disclosure contained throughout the specification may be transferred in a meaning to elements provided with the same reference numerals or the same element names. Furthermore, in various embodiments, the number, implementation, and/or arrangement of elements is not limited to the examples shown, but other numbers, implementations, and/or arrangements can be selected as desired.

Fig. 1 and 2 show a first embodiment of a display device 100 according to the utility model. The display device 100 shown here comprises a first display unit 1, a second display unit 2 arranged perpendicularly to the first display unit 1 and at least one, here a plate 3 with both transmission and reflection effects. The plate 3 having both transmission and reflection functions is disposed to be inclined with respect to the first display unit 1 and the second display unit 2 such that light emitted from the first display unit 1 and light emitted from the second display unit 2 can be emitted from the same side of the display device 100 after being respectively reflected or transmitted by the plate 3 having both transmission and reflection functions. .

The display principle of the display device 100 is explained in more detail below in connection with fig. 3. In fig. 3, a plate 3 having both transmission and reflection functions is marked with hatching between the first display unit 1 and the second display unit 2, which are perpendicular to each other, which is understood to be a plate that is capable of light transmission and also of light reflection. The plate 3 with both transmission and reflection functions can be a flat spectroscope, such as a half-transparent half-reflecting glass or a half-transparent half-reflecting acrylic plate. The plate 3 having both transmission and reflection functions may be a glass plate or a plastic plate coated with an electrochromic film capable of realizing a total reflection function, a total transmission function or a partial transmission and partial reflection function, respectively, under the application of different voltages. The electrochromic films may be controlled accordingly in order to observe the display contents of the respective display units 1, 2.

Here, the plate 3 having both transmission and reflection functions is disposed between the first display unit 1 and the second display unit 2 such that the plate 3 having both transmission and reflection functions makes an angle of 45 ° with the first display unit 1 and the second display unit 2, respectively. As shown in fig. 3, the light 11 emitted by the first display unit 1 is emitted leftward in fig. 3 after being reflected by the plate 3 having both transmission and reflection effects, and the light 21 emitted by the second display unit 2 is emitted leftward after being transmitted by the plate 3 having both transmission and reflection effects. So that both the transmitted display content of the second display unit 2 and the reflected display content of the first display unit 1 can be seen when looking from the left side towards the second display unit 2. Accordingly, due to the presence of the plate 3 having both transmission and reflection effects, light emitted by the first display unit 1 may also be emitted upward in fig. 3 after being transmitted by the plate 3 having both transmission and reflection effects, and light emitted by the second display unit 2 may also be emitted upward after being reflected by the plate 3 having both transmission and reflection effects. So that both the transmitted display content of the first display unit 1 and the reflected display content of the second display unit 2 can be seen when looking at the first display unit 1 from above. The optical path of this case is not shown in fig. 3 for clarity. By providing the plate 3 having both transmission and reflection functions, more display contents can be displayed on a limited size without increasing significant cost.

In a further embodiment, not shown, the angle of the plate 3, which has both transmissive and reflective effects, to the first display unit 1 and the second display unit 2 may be other than 45 °. Illustratively, in contrast to the embodiment shown in fig. 3, in the case where the angle of the plate 3 having both transmission and reflection effects with the first display unit 1 is greater than 45 ° and the angle of the plate 3 having both transmission and reflection effects with the second display unit 2 is less than 45 °, the light emitted by the first display unit 1 is deflected upwards with respect to the light 21 emitted by the second display unit 2 after being reflected by the plate 3 having both transmission and reflection effects, but still exits from the left side substantially together with the light 21 emitted by the second display unit 2. Thus, when looking toward the second display unit 2 from the left side, not only the transmitted display content of the second display unit 2 but also the reflected display content of the first display unit 1 can be seen. In the same case, the light emitted by the second display unit 2 is deflected rightward with respect to the light emitted upward by the first display unit 1 after being reflected by the plate 3 having both transmission and reflection effects, so that the light emitted by the second display unit 2 may be only partially emitted from the upper side and seen by the user after being reflected by the plate 3 having both transmission and reflection effects. For positioning and holding the plate 3 with both transmissive and reflective effects, the display device 100 further comprises at least one first support 4 and at least one second support 5, here a total of two first supports 4 and a total of two second supports 5, for the plate 3 with both transmissive and reflective effects, located at the side of the display device 100, as shown in fig. 1, 2 and 4. The first support 4 has a first support slope 41 parallel to the plate 3 having both transmission and reflection effects, and the second support 5 has a second support slope 51 corresponding to the first support slope 41 and also parallel to the plate 3 having both transmission and reflection effects. The first support 4 and the second support 5 cooperate such that the plate 3 having both transmission and reflection functions is partially (here, both left and right end portions of the plate 3 having both transmission and reflection functions are respectively) engaged between the first support slope 41 and the second support slope 51. As can be seen well from fig. 2, the first support slope 41 is in planar abutment against one side of the plate 3 having both transmission and reflection effects, and the second support slope 51 is in planar abutment against the other side of the plate 3 having both transmission and reflection effects, so that the first support 4 and the second support 5 sandwich the plate 3 having both transmission and reflection effects therebetween in such a manner that the first support slope 41 and the second support slope 51 face each other. Thus, by providing the first support 4 and the second support 5, it is possible to omit a prism as a carrier of a layer having both transmission and reflection, reduce the manufacturing cost and the overall weight of the display apparatus 100, and secure stable holding and fixing of the plate 3 having both transmission and reflection.

Fig. 4 shows an exploded view of the display device 100 of fig. 1. The first display unit 1 and the second display unit 2 comprise a display component for generating display content and brackets 12, 22 for the display component, respectively. The brackets 12, 22 may provide protection or support for the respective display assembly or to facilitate the mounting and positioning of the display assembly in the display device 100. The respective display module here comprises a circuit board 13, 23 integrated with LED elements and a display film 14, 24 with display icons, the respective support 12, 22 being arranged between the respective circuit board 13, 23 and the display film 14, 24. The display icons on the display films 14, 24 can be illuminated with LED elements located on the circuit boards 13, 23. The display icons illuminated by the LED elements can be observed by the user by reflection or transmission of the plate 3 having both transmission and reflection effects. The display icon may be configured to correspond to a transparent area or a hollowed-out area of the display content. The transparent region or hollow region may transmit light emitted by the LED element and thus present icons conforming to the display content, which may include, for example, letters, numbers, patterns, symbols, etc. Further, in order to sufficiently diffuse light emitted from the point light sources of the LED elements into surface light to achieve uniform light efficiency, it is conceivable to integrate a light diffusion layer into the display film or print light diffusion ink onto the display films 14, 24. However, it is also possible to use separate light-diffusing films which can be combined with the display films 14, 24 in a superimposed manner, in particular to connect, for example adhere, the light-diffusing films to the display films 14, 24.

As shown in fig. 1, 2 and 4, the brackets 12, 22 of the first display unit 1 and the second display unit 2 respectively comprise a plurality of cavities 121, 221, each cavity being associated with at least one LED element for illuminating a display icon (not shown) arranged corresponding to the cavity on the display film 14, 24. Thus, with the respective LED element illuminated, light emitted by the LED element may pass through the respective through-up-down cavity in the bracket 12, 22 to illuminate the respective display icon.

In other embodiments, the display assembly of the first display unit 1 and/or the second display unit 2 may comprise a nixie tube display or a dot matrix display screen. Thus, the icon display in addition to the conventional display by means of turning on and off the LEDs can also be useful in providing the user with more rich dynamic information, in particular graphical display content.

As can be clearly seen in fig. 4, the first support 4 is assigned to the first display unit 1 and the second support 5 is assigned to the second display unit 2. More specifically, the first support 4 may be integrally configured with the stand 12 of the first display unit 1, and the second support 5 may be integrally configured with the stand 22 of the second display unit 2. Thereby, it is possible to easily manufacture the corresponding support while manufacturing the bracket of the corresponding display unit, thereby simplifying the production and assembly processes of the display apparatus 100. In other embodiments, the support members may also be produced as separate parts and preassembled in the respective display units. With this arrangement, the first display unit 1 together with the associated first support 4 can be provided as an integral module and the second display unit 2 together with the associated second support 5 can be provided as an integral module when the display device 100 is finally assembled. This reduces the number of parts at the time of final assembly, thereby simplifying the assembly process, reducing the time cost, and improving the manufacturing efficiency, as compared with the case where the first support 4 and the second support 5 are provided as separate parts. In addition, since the first display unit 1 and the second display unit 2 should be disposed on both sides of the plate 3 having both transmission and reflection effects, and the first supporting member 4 and the second supporting member 5 also sandwich the plate 3 having both transmission and reflection effects on both sides of the plate 3 having both transmission and reflection effects in a manner facing each other, the arrangement relationship of the display unit and the supporting member on the same side of the plate 3 having both transmission and reflection effects particularly meets the assembly logic and modularization requirements of the display apparatus 100.

Fig. 5 to 8 show schematic cross-sectional views of the plate 3 having both transmission and reflection effects, the first support 4, and the second support 5, wherein fig. 5 and 7 show a state in which the plate 3 having both transmission and reflection effects is installed between the first support 4 and the second support 5, and fig. 6 and 8 show the plate 3 having both transmission and reflection effects, the first support 4, and the second support 5 separated from each other. In order to ensure positioning of the plate 3 having both transmission and reflection effects and simplify the assembly process of the display apparatus 100, a receiving portion 6 for receiving a portion of the plate 3 having both transmission and reflection effects may be formed by the first support 4 and the second support 5. The receptacle 6 is in the form of a receptacle groove and is formed by the first support 4 and the second support 5 being joined together. In the mounted state of the plate 3 with both transmission and reflection, a part of the plate 3 with both transmission and reflection can be received in the receiving portion 6 in such a way that one side abuts against the first support inclined surface 41 of the first support 4 and the other side abuts against the second support inclined surface 51 of the second support 5.

In the schematic diagrams shown in fig. 5 and 6, the first support 4 may be configured with a first step 42 on the first support slope 41, and the second support 5 may be flat on the second support slope 51. The first step 42 and the flat second bearing slope 51 form the receptacle 6 for the plate 3 having both transmission and reflection effects. Whereas in the embodiment shown in fig. 7 and 8, the first support 4 may be configured with a first step 42 on the first support ramp 41 and the second support 5 with a second step 52 on the second support ramp 51. The first step 42 and the second step 52 form a receptacle 6 for the plate 3 having both a transmissive and a reflective effect. Such an embodiment of constituting the receiving portion 6 by the first support 4 and the second support 5 helps to simplify the assembly of the display apparatus 100. For example, the first support 4 having the first stepped portion 42 may be placed first at the time of assembly, and then the plate 3 having both transmission and reflection functions may be placed on the first stepped portion 42. Here, the side wall of the first stepped portion 42 may form a stopper structure for the plate 3 having both transmission and reflection functions to prevent the plate 3 having both transmission and reflection functions from sliding down along the first supporting inclined surface 41 due to the inclination of the first supporting inclined surface 41 with respect to the horizontal plane. Subsequently, the second support 5 may be disposed on the plate 3 having both transmission and reflection effects, thereby holding the plate 3 having both transmission and reflection effects between the first support 4 and the second support 5. This embodiment is particularly advantageous when the display unit is provided as an integral module with associated support members to the assembly station, since in such an integral module the support slope of the support members is 45 ° relative to the plane of extension of the display unit or display assembly (see for example fig. 1, 2 and 4), so that when the display unit or display assembly is placed horizontally the support slope of the support members naturally tilts relative to the horizontal plane, whereby there is the possibility that the plate 3 with both transmission and reflection effects slides down along the flat support slope. By providing the step, on the one hand, the positioning of the plate 3 with both transmission and reflection on the supporting slope can be ensured by the side walls of the step, and on the other hand, the assembly process of the display device 100 is also optimized, since no additional hand or other auxiliary tool is required to hold the plate 3 with both transmission and reflection on the first display unit 1 before pressing the support 5 of the second display unit 2 against the plate 3 with both transmission and reflection.

In an embodiment not shown, the second support 5 can also be configured with a second step 52 on the second support ramp 51, while the first support 4 is flat on the first support ramp 41. The receiving portion 6 is constituted by the second stepped portion 52 and the flat first support slope 41. In such an embodiment, the assembly sequence of the display device 100 may also be exchanged accordingly, so that it is possible, for example, to first place the plate 3 with both transmission and reflection on the second stepped portion 52 of the second support 5 and then press the first support 4 against the plate 3 with both transmission and reflection.

Fig. 9 shows a cross-sectional view of the bracket 12 of the first display unit 1 together with the plate 3 having both transmissive and reflective effects. The carrier 12 of the first display unit 1 is formed with a receiving groove 15 which is flush with the first step 42 on the support 4 of the first display unit 1. As can be seen from fig. 4, the receiving groove 15 extending on the bracket 12 of the first display unit 1 forms an additional receiving portion extending in the length direction of the plate 3 having both transmission and reflection functions. The additional receiving portion serves to receive and hold the lengthwise extending edges of the plate 3 having both transmission and reflection effects, so that the plate 3 having both transmission and reflection effects can be reliably held and fixed not only at both end sides of the plate 3 having both transmission and reflection effects but also over the entire length of the plate 3 having both transmission and reflection effects. Similarly, the bracket of the second display unit may also be configured with a receiving groove flush with the second stepped portion.

In some embodiments, the plate 3 having both transmission and reflection effects can be fixed between the first display unit 1 and the second display unit 2 in a form-fitting, material-fitting or force-fitting manner. For example, the plate 3 having both transmission and reflection functions may be held between the first display unit 1 and the second display unit 2 by an adhesive or connected to the first display unit 1 and/or the second display unit 2 by ultrasonic welding.

In the embodiment shown in fig. 1, 2 and 4, the first support 4 and the second support 5 are provided in pairs on both end sides of the plate 3 having both transmission and reflection effects. Alternatively or additionally, further support elements can also be provided in the region between the two end sides of the plate 3 which have both transmission and reflection effects.

As shown in fig. 10 and 11, the display apparatus 100 includes a housing frame 7, and the first display unit 1 and the second display unit 2 are mounted on the housing frame 7. The first and second display units 1 and 2 and the plate 3 having both transmission and reflection functions between the first and second display units 1 and 2 may be fixed with respect to each other by the housing frame 7, thereby forming the integrated display device 100. The housing frame 7 is made of metal. The housing frame 7 has a substantially concave shape and thus has a horizontal frame portion 71 and two end frame portions 72 extending vertically upwards from the horizontal frame portion 71. Here, the first display unit 1 may be connected with the horizontal frame portion 71 of the housing frame 7, for example, via a screw hole 73. The second display unit 2 may be positioned with respect to the housing frame 7 via the bottom positioning pins 25 being inserted into the corresponding positioning holes 74 of the horizontal frame portion 71, and then the second display unit 2 may be fixed to the housing frame 7 via the screw holes 75 located on the end side frame portion 72 of the housing frame 7. Naturally, the connection manner of the first display unit 1 and the second display unit 2 with the housing frame 7 is not limited thereto, but a wide range of possible connection manners may be adopted. Further, the housing frame 7 further includes a display device fitting portion 76 for fitting the display device 100 in a home appliance not shown. The display device assembly 76 is in this case formed as two lugs, each of which protrudes outwardly from the end frame part 72, on which lugs mounting holes 77 are provided for fastening the display device 100 in a household appliance, not shown, for example on a corresponding mounting bracket of the household appliance.

The display device 100 as shown in fig. 1 has a rectangular parallelepiped basic shape. The first display unit 1, in particular the display assembly of the first display unit 1, forms the bottom surface of the cuboid, and the second display unit 2, in particular the display assembly of the second display unit 2, forms one rear surface of the cuboid. The first support 4 and the second support 5 have a triangular basic shape, respectively, and the respective first support 4 and second support 5 are assembled into two side faces of the rectangular parallelepiped, which are perpendicular to the bottom face and the rear face, opposite to each other. The plate 3 having both transmission and reflection functions is located on the diagonal surface of the rectangular parallelepiped. As already described above in connection with fig. 3, the remaining two faces of the cuboid, namely the top face opposite the first display unit 1 and the front face opposite the second display unit 2, can both be used as display faces. Here, for example, the front side of the display device 100 opposite to the second display unit 2 is used as a display surface. In the state in which the display device 100 is mounted in a home appliance, not shown, by means of the display device mounting 76 of the housing frame 7, the display surface of the display device 100 (here the front surface opposite the second display unit 2) can be directly attached to and thus closed by a panel of the home appliance. In order to protect the internal components of the display apparatus 100, the display apparatus 100 may have a cover plate 8 on a top surface opposite to the first display unit 1, which is not a display surface. The cover 8 can be embodied integrally with the holder 22 of the second display unit 2. In other embodiments, the cover plate 8 can also be produced separately and then mounted on the respective display unit 1, 2, for example in a form-fitting, material-fitting or force-fitting manner. In other embodiments, the display device 100 may additionally have a cover plate on the display surface (in this case, the surface opposite to the second display unit 2), so that the display device 100 itself forms a structure closed to the outside. The cover plate located on the display surface can be transparent, so that the influence of the cover plate on the display effect is reduced.

In still other embodiments, if both the top surface of the display device 100 opposite to the first display unit 1 and the front surface opposite to the second display unit 2 are used as display surfaces, and the display device 100 is arranged at the edge of the home appliance such that the surface of the display device 100 opposite to the first display unit 1 and the surface opposite to the second display unit 2 are respectively covered by the corresponding panels of the home appliance, the display device 100 may also have no cover plate.

Fig. 12 to 14 show a second embodiment of a display device 100 according to the utility model. In the first embodiment as shown in fig. 1, 2 and 4, the display apparatus 100 can be assembled in such a manner that the first display unit 1 is down and the second display unit 2 is up, and is also mounted on the home appliance in such a manner that the first display unit 1 is down. While the second embodiment as shown in fig. 12 to 14 differs from the first embodiment described above in that the display device 100 according to the second embodiment is assembled with the first display unit 1 down and the second display unit 2 up as in the first embodiment, the display device 100 according to the second embodiment is mounted on a household appliance with the second display unit 2 down and the first display unit 1 up "upside down" with respect to fig. 1. This can provide various assembly modes. Whether the display device 100 is mounted on the home appliance in such a manner that the first display unit 1 is downward (see fig. 1) or the first display unit 1 is upward (see fig. 12) may be decided, for example, according to a general mounting height of the home appliance and a user's viewing angle when viewing the display device 100 positioned in the home appliance. For example, if the home appliance is a washing machine, a user generally looks at the display device 100 in a top view when in use. In this case, the display apparatus 100 is preferably mounted on the home appliance in such a manner that the first display unit 1 is on the upper side (see fig. 12) to avoid the user from directly seeing the first display unit 1 located below when looking at the display apparatus 100.

Fig. 15 shows a schematic view of a third embodiment of a display device 100 according to the utility model. Unlike the first and second embodiments in which the plate 3 having both transmission and reflection functions is located on the diagonal surface of the display device 100, in the third embodiment, the first display unit 1 is disposed on the right side of the second display unit 2, and the plate 3 having both transmission and reflection functions extends only over a part of the lateral length of the second display unit 2, so that a superposition of a part of the display content of the second display unit 2 (i.e., the display content on the right side) and the display content of the first display unit 1 is displayed in the right side region 91 of the display surface (here, the surface opposite to the second display unit 2), and only the other part of the display content of the second display unit 2 (i.e., the display content on the left side) is displayed in the left side region 92 of the display surface. Here, the first support 4 and the second support 5 still carry both end portions of the plate 3 having both transmission and reflection functions on both end sides (here, upper end side and lower end side) of the plate 3 having both transmission and reflection functions. Since the plate 3 having both transmissive and reflective effects extends only over part of the lateral length of the second display unit 2, the second support 5 has a substantially trapezoidal shape here, whereas the first support 4 has a substantially triangular shape, and the first support 4 and the second support 5 are jointly stitched into the top and bottom surfaces of the display device 100. Furthermore, the second display unit 2 has a cover plate 8 on the side opposite to the first display unit 1.

Fig. 16 shows a schematic diagram of a fourth embodiment of a display device 100 according to the utility model. In comparison with the third exemplary embodiment according to fig. 15, the display device 100 according to fig. 16 additionally has a third display unit 10 and a further plate 30, which is associated with the third display unit 10 and has both transmission and reflection effects, on the left. Thus, the superposition of the display content on the right portion of the second display unit 2 and the display content of the first display unit 1 can be displayed in the right region 91 of the display surface (in this case, the surface opposite to the second display unit 2), the superposition of the display content on the left portion of the second display unit 2 and the display content of the third display unit 10 can be displayed in the left region 92 of the display surface, and only the display content on the middle portion of the second display unit 2 can be displayed in the middle region 93 of the display surface. Here, in order to carry and hold the other plate 30 having both transmission and reflection effects, the third display unit 10 may have a third support 31, the third support 31 having a third support slope 32 for the other plate 30 having both transmission and reflection effects, and the second support 5 of the second display unit 2 may have another support slope 33 for the other plate 30 having both transmission and reflection effects. The other plate 30 having both transmission and reflection functions is held between the second support 5 of the second display unit 2 and the third support 31 of the third display unit 10. Here, the cover plate 8 is not required to be provided on the face opposite to the first display unit 1 due to the presence of the third display unit 10, but in some embodiments, the display unit 100 may still have a transparent cover plate on the display face (i.e., the front face opposite to the second display unit 2).

Fig. 17 shows a schematic diagram of a touch display system 200 according to the present utility model. Here, the touch display system 200 includes not only the display device 100 as shown above, but also at least one touch film 210 for detecting a user operation. In order to provide an intuitive human-computer interaction experience for the user, the touch film 210 is preferably disposed on an area of the display surface of the display device 100. For example, if the front surface of the display device 100 opposite to the second display unit 2 is taken as a display surface, the display device 100 may be provided with a transparent cover plate 8 on the front surface opposite to the second display unit 2, and the touch film 210 may be disposed on the transparent cover plate 9. The cover 8 on the side opposite the first display unit 1 can be configured to be transparent or opaque. Similarly, in an embodiment not shown, if the top surface opposite to the first display unit 1 is taken as the display surface, the touch film 210 may also be provided on the cover plate 8 opposite to the first display unit 1.

Fig. 18 shows a schematic cross-sectional view of a human-machine interaction system 400 according to the utility model. The man-machine interaction system 400 shown here has the display device 100 shown above and the infrared operation unit 410 provided in the first display unit 1. The infrared rays emitted by the infrared operation unit 410 may be transmitted to the face opposite to the first display unit 1 or reflected to the face opposite to the second display unit 2 via the plate 3 having both transmission and reflection functions. When the emitted infrared light is reflected by the user, in particular his hand, the reflected infrared light is transmitted and/or reflected again in the display device onto the infrared operating unit 410 on the basis of a reversible light path in the display device, whereby the user's operation can be detected by the human interaction system. Therefore, through the man-machine interaction system, a user can not only obtain excellent visual impression and visual experience provided by the display device, but also can conveniently and directly operate on the surface of the man-machine interaction system or the display device thereof, so that the user can obtain intuitive and convenient interaction, and the use experience is optimized. Meanwhile, the man-machine interaction system can avoid the situation that keys or buttons are set around the surface of the display device in a consuming mode, the integration level of the system is improved, and the man-machine interaction system has a concise appearance.

The human-machine interaction system 400 shown in fig. 18 is exemplarily built into the household appliance 300. The household appliance 300 is, for example, a range hood having a flat shape, wherein the human-computer interaction system 400 is provided in a region close to the user. The human-computer interaction system 400, in particular the cover plate 8 on the side opposite to the second display unit 2, may be used as a front panel of a range hood from which a user can see the display content of the first display unit 1 and/or the second display unit 2, and on which operations, in particular touch and/or gesture operations, may also be performed to control the respective functions of the range hood. To this end, the user may touch on the cover 8 or make a gesture at a distance from the cover 8.

Fig. 18 shows in particular that the circuit board 13 in the first display unit 1 is provided with not only LED elements 18 but also infrared emitting tubes 16 and infrared receiving tubes 17. Accordingly, a cavity 121 for the LED element 18 and a cavity 122 for the infrared emission tube 16 or for the infrared receiving tube 17 are provided in the holder 12. The chambers are each provided as hollow areas with a slightly flared mouth. However, without being limited thereto, the cavity may have a uniform cross section up and down. In addition, the cavity 122 for the infrared transmitting tube 16 or for the infrared receiving tube 17 is formed as a light-limiting structure. Advantageously, it can also be provided that the cross section of infrared transmitting tube 16 and/or infrared receiving tube 17 occupies 40% to 90% of the cross section of cavity 122. Preferably, the height of cavity 122 exceeds the top of infrared emitting tube 16 and/or infrared receiving tube 17 so that the light emission/receiving angle thereof can be limited, thereby allowing the use of infrared emitting tube 16 and infrared receiving tube 17 that are less costly but have a greater light emission/receiving angle.

Fig. 18 also depicts the infrared rays emitted by infrared emitting tube 16 and the infrared rays received by infrared receiving tube 17. Since the face of the display device 100 opposite the first display unit 1 faces the roof in the mounted position of the range hood without being seen or used by the user, only the light path shown by the solid arrow in fig. 18 is shown here, in which the infrared rays emitted by the infrared emission tube 16 are reflected by the plate 3 having both transmission and reflection effects toward the face opposite the second display unit 2 serving as a display face and an operation face. When the user performs a touch operation or a gesture operation, the infrared rays reflected by the user's hand are reflected by the plate 3 having both transmission and reflection functions toward the adjacent infrared receiving tube 17, as the optical path shown by the outline arrow in fig. 18.

Fig. 19 shows a schematic view of an embodiment of a household appliance 300 according to the present utility model. The home appliance 300 may include the display device 100 as described above and/or the touch display system 400 as described above and/or the human-machine interaction system 200 as described above. Here, the home appliance 300 exemplarily includes the display device 100 as described above. The display device 100 is mounted, for example, within the household appliance 300 such that the display surface of the display device 100 (i.e. the surface opposite the second display unit 2) is close to the panel 310 of the household appliance 300 from the inside of the household appliance 300, in particular such that the display surface of the display device 100 is abutted against the panel 310 of the household appliance 300. In order to implement the man-machine interaction function, the home appliance 300 may integrate a touch film 320 for detecting a user operation on a panel 310 thereof, particularly on an area corresponding to a display surface of the display device 100.

The utility model is not limited to the embodiments shown, but includes or extends to all technical equivalents which fall within the effective scope of the appended claims. The positional references selected in the description, such as, for example, up, down, left, right, etc., refer to the direct description and the drawings shown and can be transferred to new positions in the sense of a change in position.

The features disclosed in this document can be essential for the implementation of the embodiments in different embodiments and can be implemented not only individually but also in any combination.

Although the present utility model has been described with respect to the preferred embodiments, it is not intended to be limited thereto, and any person skilled in the art can make any possible variations and modifications to the technical solution of the present utility model by using the technical matters disclosed above without departing from the spirit and scope of the present utility model, so any simple modifications, equivalent variations and modifications to the above embodiments according to the technical matters of the present utility model fall within the scope of the technical solution of the present utility model.

Claims

1. A display device, characterized in that the display device comprises:

a first display unit;

a second display unit disposed perpendicular to the first display unit;

at least one transmissive and reflective plate disposed to be inclined with respect to the first and second display units such that light emitted from the first display unit and light emitted from the second display unit can be emitted from the same side of the display device after being reflected or transmitted by the transmissive and reflective plate, respectively; and

at least one first support and at least one second support for the transmissive and reflective plate located on a side of the display device, wherein the first support has a first support slope parallel to the transmissive and reflective plate, and the second support has a second support slope corresponding to the first support slope such that the transmissive and reflective plate is partially nested between the first and second support slopes.

2. A display device according to claim 1, wherein the transmissive and reflective plates are arranged at 45 ° to the first display unit and the second display unit, respectively, such that light emitted by the first display unit is co-directional with light emitted by the second display unit after being reflected by the transmissive and reflective plates.

3. A display device according to claim 1 or 2, wherein the first support is arranged to the first display unit and the second support is arranged to the second display unit.

4. A display device according to claim 3, wherein the first display unit and the second display unit respectively include a display component for generating display content and a stand for the display component, the first support is integrally constructed with the stand of the first display unit, and the second support is integrally constructed with the stand of the second display unit.

5. A display device according to claim 1 or 2, wherein a receiving portion for receiving a portion of the plate having both transmission and reflection functions is formed between the first support member and the second support member.

6. A display device according to claim 5, wherein,

the first support is configured with a first step on the first support ramp and the second support is flat on the second support ramp; or alternatively

The second support is configured with a second step on the second support ramp and the first support is flat on the first support ramp; or alternatively

The first support is configured with a first step on the first support ramp and the second support is also configured with a second step on the second support ramp.

7. A display device according to claim 6, characterized in that the brackets of the first display unit are configured with receiving grooves flush with the first step and/or the brackets of the second display unit are configured with receiving grooves flush with the second step.

8. A display device as claimed in claim 1 or 2, characterized in that the first support and the second support are arranged in pairs on both end sides of a plate having both transmissive and reflective effects.

9. The display apparatus according to claim 8, wherein the display apparatus has a basic shape of a rectangular parallelepiped, the first display unit forms one bottom surface of the rectangular parallelepiped, the second display unit forms one rear surface of the rectangular parallelepiped, and the first support member and the second support member provided in pairs are respectively joined into two side surfaces of the rectangular parallelepiped perpendicular to the bottom surface and the rear surface, which are opposite to each other.

10. A display device according to claim 9, wherein a front face of the rectangular parallelepiped opposite to the second display unit is used as a display face, and/or a top face of the rectangular parallelepiped opposite to the first display unit is used as a display face.

11. A display device according to claim 9 or 10, characterized in that a cover plate is provided on the front face of the cuboid opposite the second display unit and/or a cover plate is provided on the top face of the cuboid opposite the first display unit.

12. The display device of claim 11, wherein the cover plate is integrally constructed with the stand.

13. A display device according to claim 1 or 2, wherein the display device comprises a housing frame, the first display unit and the second display unit being mounted on the housing frame such that the housing frame at least partially encloses the first display unit and the second display unit.

14. The display device according to claim 13, wherein the housing frame is made of metal and/or the housing frame includes a display device mounting portion configured for mounting the display device on a household appliance.

15. The display device according to claim 4, wherein a display assembly of at least one of the first display unit and the second display unit includes a circuit board integrated with an LED element and a display film with display icons, and the stand is disposed between the circuit board and the display film.

16. A display device as claimed in claim 15, characterized in that the holder comprises a plurality of cavities, in each of which at least one of the LED elements is accommodated for illuminating a display icon arranged on the display film corresponding to that cavity.

17. The display device of claim 4, wherein the display component of at least one of the first display unit and the second display unit is a nixie tube display or a dot matrix display screen.

18. A display device according to claim 1 or 2, characterized in that the at least one plate having both transmissive and reflective effects is a first plate and a second plate, the display device comprising a third display unit, which third display unit is arranged on a side of the display device opposite to the first display unit, and the first plate is arranged at 45 ° to the first display unit and the second display unit, respectively, and the second plate is arranged at 45 ° to the second display unit and the third display unit, respectively, such that light emitted by the first display unit and the third display unit after reflection by the first plate and the second plate, respectively, is co-directional with light emitted by the second display unit.

19. A touch display system, the touch display system comprising:

display device according to one of claims 1 to 18; and

at least one touch film for detecting a user operation, the touch film being disposed on a top surface of the display device opposite to the first display unit and/or on a front surface of the display device opposite to the second display unit.

20. The touch display system of claim 19, wherein the touch film is disposed on a transparent cover plate of the display device.

21. A touch display system according to claim 19 or 20, wherein the touch display system outputs control instructions and/or changes the display of the display device in accordance with a user operation detected by the touch film.

22. The man-machine interaction system is characterized in that the man-machine interaction system comprises:

display device according to one of claims 1 to 18; and

at least one infrared operation unit for detecting user operation, wherein,

the infrared operation unit is provided in at least one of the respective display units of the display device, or one of the respective display units of the display device is replaced with the infrared operation unit.

23. A human-machine interaction system according to claim 22, wherein the at least one infrared operating unit is configured as a gesture operating unit and/or a touch operating unit.

24. A human-machine interaction system according to claim 23, wherein each infrared operating unit comprises at least two infrared transmitting tubes, at least one infrared receiving tube, a control circuit and a signal processor, the control circuit alternately switching the infrared transmitting tubes and/or the infrared receiving tubes on and off, and the signal processor receiving and processing signals generated by the infrared receiving tubes.

25. A man-machine interaction system as claimed in claim 24, wherein the plurality of infrared emitting tubes and the plurality of infrared receiving tubes are alternately arranged along the direction of extension of the infrared operating unit.

26. A human-machine interaction system according to claim 24 or 25, wherein at least one of the display units of the display device comprises a circuit board integrated with LED elements, a display membrane with a plurality of display icons, each display icon of the plurality of display icons being spatially configurable with an infrared transmitting tube and an infrared receiving tube for detecting user operation of the display icon, and a bracket between the circuit board and the display membrane.

27. A human-machine interaction system according to claim 26, wherein the infrared operating unit is mounted on the LED element integrated circuit board and a light limiting structure for an infrared transmitting tube and for an infrared receiving tube is formed in the holder.

28. A human-machine interaction system according to any one of claims 22 to 25, wherein the human-machine interaction system outputs control instructions and/or changes the display of the display device in dependence on user operations detected by the infrared operation unit.

29. Household appliance, characterized in that it comprises a display device according to one of claims 1 to 18 and/or a touch display system according to one of claims 19 to 21 and/or a human-machine interaction system according to one of claims 22 to 28.

30. The household appliance according to claim 29, wherein the display device is mounted within the household appliance such that the display device is abutted against a panel of the household appliance from the inside of the household appliance.

31. The household appliance of claim 29 or 30, wherein the household appliance is a range hood, a stove, a refrigerator, an oven, a dishwasher, a food processor, a washing machine, a clothes dryer, a sound, a television, a smart tap or a smart toilet.