CN110534018B - Transparent display device - Google Patents
Transparent display device Download PDFInfo
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- CN110534018B CN110534018B CN201910818929.8A CN201910818929A CN110534018B CN 110534018 B CN110534018 B CN 110534018B CN 201910818929 A CN201910818929 A CN 201910818929A CN 110534018 B CN110534018 B CN 110534018B
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- transparent display
- display panel
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
- H05K7/20972—Forced ventilation, e.g. on heat dissipaters coupled to components
Abstract
The embodiment of the invention discloses a transparent display device. The transparent display device includes: the display device comprises a shell structure, a display module and a display module, wherein the shell structure comprises a transparent display panel used for carrying out transparent display; the heating part heats the interior of the shell structure and generates infrared band light, and the infrared absorber plate is arranged on one side of the transparent display panel, which is far away from the light-emitting surface; the infrared absorber plate absorbs the infrared band light and penetrates through the visible band light. The embodiment of the invention solves the problem that the transparent display panel in the existing transparent display device is easy to damage due to temperature rise caused by infrared radiation energy absorption, realizes isolation of infrared band light to a certain extent on the basis of not influencing the normal transparent display function, avoids the transparent display panel absorbing infrared radiation energy, and ensures the display quality and the service life of the transparent display panel.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a transparent display device
Background
The existing transparent display panel is widely applied to daily life because of high transparency. For example, in the field of kitchen appliances, a transparent door panel structure is generally adopted for observing the internal conditions of the appliances, and a transparent display panel is integrated on the door panel structure to realize the display function.
To inside heat production's household electrical appliances such as oven, its inside can produce high temperature, when transparent display panel high temperature, can influence normal demonstration, simultaneously because the stove temperature is higher, its inside infrared thermal radiation that still can produce, infrared band's light sees through the insulating layer easily and incides to transparent display panel in, transparent display panel can absorb the thermal radiation energy of this part of light. Moreover, the transparent display panel has no heat conduction and heat dissipation functions, so that after infrared heat radiation energy is absorbed for a long time, the display panel is easily damaged due to overhigh temperature, and the display effect is influenced.
Disclosure of Invention
The invention provides a transparent display device, which is used for absorbing and blocking infrared band light generated in the transparent display device and avoiding damage of a transparent display panel arranged on a shell due to overhigh temperature.
In a first aspect, an embodiment of the present invention provides a transparent display device, including:
the display device comprises a shell structure, a display module and a display module, wherein the shell structure comprises a transparent display panel used for carrying out transparent display;
a heating part which heats the interior of the shell structure and generates infrared band light,
the infrared heat absorption plate is arranged on one side of the transparent display panel, which is far away from the light emitting surface; the infrared absorber plate absorbs the infrared band light and penetrates through the visible band light.
Optionally, the infrared absorber plate is doped with a near-infrared dye, and/or a metal oxide film is disposed on a surface of the infrared absorber plate parallel to the light exit surface of the transparent display panel, and an absorption band of the near-infrared dye and an absorption band of the metal oxide film are located in an infrared band.
Optionally, the infrared absorber plate comprises a polymethylmethacrylate PMMA plate or a polycarbonate PC plate.
Optionally, a diversion cavity is arranged inside the infrared absorber plate, and transparent cooling liquid is contained in the diversion cavity.
Optionally, the transparent cooling liquid and the infrared absorber plate have the same refractive index.
Optionally, the transparent cooling liquid comprises an acid-base salt solution or a sucrose solution.
Optionally, the flow guide cavity is of a snake-shaped channel structure or a return-shaped channel structure, and the snake-shaped channel structure and the return-shaped channel structure are both provided with a liquid inlet and a liquid outlet.
Optionally, the diversion cavity includes at least two layers of diversion channels stacked along the light exit direction, and the vertical projection of the at least two layers of diversion channels on the plane where the transparent display panel is located completely covers the transparent display panel.
Optionally, the display device further comprises a cooling liquid accommodating box, and the cooling liquid accommodating box and the transparent display panel are not overlapped in the light emitting direction;
the cooling liquid containing box is communicated with the flow guide cavity in the infrared absorber plate, and the transparent cooling liquid circulates in the cooling liquid containing box and the flow guide cavity.
Optionally, the system further comprises a flow rate control unit, a pressure pump and a temperature sensor, wherein the flow rate control unit is electrically connected with the temperature sensor and the pressure pump respectively;
the temperature sensor is used for detecting the real-time temperature of the transparent display panel; the pressure pump is arranged on a communication channel between the cooling liquid accommodating box and the flow guide cavity; the flow rate control unit is used for adjusting the flow rate of the transparent cooling liquid by controlling the pressure pump according to the real-time temperature of the transparent display panel.
Optionally, the display panel further comprises an air cooling device and at least one heat insulation plate arranged on one side of the transparent display panel, which is far away from the light emitting surface, an air cooling channel is arranged between the heat insulation plates and between the transparent display panel and the cooling liquid containing box, the cooling liquid containing box is arranged at an air inlet of the transparent display device, and the air cooling device is used for blowing air to the air cooling channel to cool the heat insulation plates and the cooling liquid containing box.
Optionally, the infrared absorber plate is attached to the transparent display panel through a transparent adhesive layer.
Optionally, a gap is formed between the infrared heat absorbing plate and the transparent display panel.
Optionally, the transparent display panel further includes backlight light bars disposed on two sides of the infrared absorber plate along a first direction, where the first direction is parallel to the light exit surface of the transparent display panel.
Optionally, the transparent display device is an oven or a microwave oven.
According to the transparent display device provided by the embodiment of the invention, the shell structure is arranged, the transparent display panel is arranged on the shell structure to carry out transparent display, the heating part is arranged in the shell, and the heating part can be used for heating the interior of the shell structure. The infrared absorber plate is arranged on the side, away from the light emitting surface, of the transparent display panel, and infrared band light generated when the heating part heats can be blocked and absorbed. The embodiment of the invention solves the problem that the transparent display panel in the existing transparent display device is easy to damage due to temperature rise caused by infrared radiation energy absorption, realizes isolation of infrared band light to a certain extent on the basis of not influencing the normal transparent display function, can avoid overhigh temperature caused by infrared radiation energy absorption of the transparent display panel, and ensures the display quality and the service life of the transparent display panel.
Drawings
Fig. 1 is a schematic structural diagram of a transparent display device according to an embodiment of the present invention;
FIG. 2 is a top view of a partial structure of a transparent display device according to an embodiment of the present invention;
FIG. 3 is a graph of transmittance of a PMMA plate doped with NIR1 dye according to an embodiment of the present invention;
FIG. 4 is an absorption curve diagram of a PC board coated with an ITO film according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of another transparent display device provided in an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of another transparent display device according to an embodiment of the present invention;
FIG. 7 is a schematic view of an infrared absorber plate in the transparent display device shown in FIG. 6;
FIG. 8 is a schematic structural diagram of another transparent display device according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of another transparent display device according to an embodiment of the present invention;
fig. 10 is a schematic structural view of another infrared heat-conducting plate provided by the embodiment of the present invention;
fig. 11 is a schematic structural diagram of another infrared heat-conducting plate provided by the embodiment of the invention;
fig. 12 is a cross-sectional view along AA' of the infrared thermally conductive plate of fig. 11.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a transparent display device according to an embodiment of the present invention, and referring to fig. 1, the transparent display device includes: a housing structure 10, wherein the housing structure 10 includes a transparent display panel 11, and the transparent display panel 11 is used for transparent display; the heating portion 20 heats the inside of the housing structure 10 and generates infrared band light, and the infrared absorber plate 30 is disposed on a side of the transparent display panel 11 away from the light exit surface; the infrared absorber plate 30 absorbs the infrared band light and transmits the visible band light.
The transparent display device is an electric appliance or an apparatus having a transparent display function, and the transparent display device is not simply used for transparent display, but the transparent display function may be only an auxiliary function, and may be, for example, an oven or an oven having a transparent display function. The transparent display device is a closed housing structure 10 in a closed state, and a transparent display panel 11 is disposed on the housing structure 10. The case structure 10 may be provided with a single-door structure or a double-door structure, and the transparent display panel 11 may be provided on the single-door structure or the double-door structure. In addition, the oven or the oven is further provided with a heating part 20, and the heating part 20 is used for directly or indirectly heating the inside of the housing structure 10, and it should be noted that the heating part provided in the drawings is only an illustration and can be provided at different positions according to the requirement of the transparent display device, and the heating is implemented by the transparent display device. The transparent display panel 11 can display image information, and/or the transparent display panel 11 is provided with an adjusting knob, and when the film layer structure with the touch function is arranged in the area of the transparent display panel 11 corresponding to the adjusting knob, the adjusting function of the whole transparent display device can be realized. Illustratively, the heating temperature or time may be controlled. During heating or after a temperature rise, thermal radiation is generated inside the housing structure 10, and the thermal radiation energy propagates to the outside of the housing structure 10 through infrared band light, wherein the infrared band light is non-visible light with a wavelength within 760nm-1 mm. The transparent display device is further provided with an infrared heat absorption plate 30 positioned on the back of the transparent display panel 11, so that the infrared band light inside is absorbed and blocked to a certain extent, and the infrared band light is prevented from being transmitted to the transparent display panel 11. Of course, in order to ensure that the transparent display panel 11 can observe the inside of the housing structure 10, the infrared heat absorbing plate 30 needs to be transparent, i.e. transmit light in the visible light band.
According to the transparent display device provided by the embodiment of the invention, the shell structure is arranged, the transparent display panel is arranged on the shell structure to carry out transparent display, the heating part is arranged in the shell, and the heating part can be used for heating the interior of the shell structure. The infrared absorber plate is arranged on the side, away from the light emitting surface, of the transparent display panel, and infrared band light generated when the heating part heats can be blocked and absorbed. The embodiment of the invention solves the problem that the transparent display panel in the existing transparent display device is easy to damage due to temperature rise caused by infrared radiation energy absorption, realizes isolation of infrared band light to a certain extent on the basis of not influencing the normal transparent display function, can avoid overhigh temperature caused by infrared radiation energy absorption of the transparent display panel, and ensures the display quality and the service life of the transparent display panel.
Fig. 2 is a top view of a partial structure of a transparent display device according to an embodiment of the present invention, referring to fig. 2, in the transparent display device, a transparent display panel 11 further includes backlight light bars 111, the backlight light bars 111 are disposed on two sides of the infrared heat absorbing plate 30 along a first direction 100, and the first direction 100 is parallel to a light exit surface of the transparent display panel 11. Here, the infrared absorber plate 30 may also be configured as a light guide plate in addition to having a function of absorbing infrared light. The backlight light bar 111 emits backlight into the transparent display panel 11 through the infrared heat absorbing plate 30, so as to realize display of the transparent display panel 11, and it should be noted that the backlight light bar 111 herein may provide illumination brightness for the transparent display device, that is, illumination brightness is provided in a hollow cavity formed by the housing structure, in addition to providing a light source for the transparent display panel 11.
In the above embodiments, the infrared absorber plate may be made of polymethyl methacrylate PMMA or polycarbonate PC, that is, the infrared absorber plate includes a polymethyl methacrylate PMMA plate and a polycarbonate PC plate. The absorption band of PMMA is 2800nm-25000nm, so that infrared rays with the wavelength of 2800nm-25000nm can be absorbed and isolated, and the absorption of infrared radiation energy by the transparent display panel is reduced to a certain extent. The absorption band of the PC is between 700nm and 1600nm, and similarly, it can absorb and isolate infrared light having a wavelength between 700nm and 1600nm, thereby reducing the absorption of this portion of the infrared radiation energy by the transparent display panel. The PMMA and the PC are made of transparent materials, and the transmission of visible light is not affected while infrared light is absorbed, so that the inside of the housing structure can be observed through the transparent display panel.
On the basis that the absorption band of the infrared absorber plate is only located in a partial region of the infrared band, in order to further increase the absorption of the infrared absorber plate for infrared radiation energy, a person skilled in the art can reasonably perform doping or mixing according to different infrared absorption band characteristics of various materials and absorption capacities in different absorption bands to obtain a wider infrared absorption band and a stronger infrared absorption capacity, and the method is not limited herein.
In addition, the embodiment of the invention also designs various improving means aiming at the problem that the absorption wave band of the infrared heat absorption plate is narrow. Specifically, near-infrared dyes may be doped in the infrared absorber plate, wherein the near-infrared dyes are uniformly distributed in the infrared absorber plate, or a metal oxide film may be disposed on the surface of the infrared absorber plate parallel to the light-emitting surface of the transparent display panel, and the absorption band is widened by using the infrared band absorption capability of the infrared dyes and the metal oxide film. It should be noted that, the selection of the infrared dye and the metal oxide film needs to be matched with the infrared absorber plate body material, so that the absorption bands of the infrared dye and the metal oxide film are not only located in the infrared band, but also are complementary with the absorption band of the infrared absorber plate body material in the infrared band, and the transmission band of the infrared absorber plate body material in the infrared band is effectively compensated.
Illustratively, the embodiment of the invention also provides two infrared heat absorbing plate structures, including a PMMA plate doped with NIR1 dye and a PC plate coated with ITO film. Fig. 3 is a graph showing transmittance of a PMMA plate doped with NIR1 dye according to an embodiment of the present invention, and referring to fig. 3, the PMMA plate doped with NIR1 dye has transmittance of approximately 60% in visible light region and strong absorption in the 650nm-930nm band. Fig. 4 is an absorption curve diagram of the PC board with the ITO film plated thereon according to the embodiment of the present invention, and it is obvious that the PC board with the ITO film plated thereon has a significant absorption intensity in the 1200nm-1600nm band with reference to fig. 4.
As shown in fig. 1 and 2, the infrared heat absorbing plate 30 may be attached to the transparent display panel 11 through a transparent adhesive layer, and at this time, the infrared heat absorbing plate 30 may absorb heat of the transparent display panel 11 at the same time, so as to achieve auxiliary heat dissipation of the transparent display panel 11. In addition, the embodiment of the invention also provides a transparent display device. Fig. 5 is a schematic structural diagram of another transparent display device according to an embodiment of the present invention, and referring to fig. 5, in the transparent display device, a gap is formed between the infrared heat absorbing plate 30 and the transparent display panel 11, that is, the infrared heat absorbing plate 30 is fixedly bonded to the transparent display panel 11 through a sealant. At this time, an air layer exists between the infrared heat absorbing plate 30 and the transparent display panel 11, and the air layer may serve as a thermal insulation layer on a path from the inside of the case structure 10 to the transparent display panel 11 to insulate heat from being transferred from the inside to the transparent display panel 11.
Furthermore, in order to make the infrared absorber plate absorb the infrared band light, the heat can be dissipated. Optionally, a diversion cavity can be arranged inside the infrared absorber plate. Fig. 6 is a schematic structural diagram of another transparent display device according to an embodiment of the present invention, fig. 7 is a schematic structural diagram of an infrared absorber plate in the transparent display device shown in fig. 6, and referring to fig. 6 and 7, a diversion cavity 31 is disposed inside an infrared absorber plate 30 in the transparent display device, and a transparent cooling liquid is contained in the diversion cavity 31. Transparent coolant liquid can be with through the water conservancy diversion with the heat absorption on the infrared absorber plate 30 and discharge in order to reduce the temperature of infrared absorber plate 30 itself, at this moment, infrared absorber plate 30 not only can realize the light of effective absorption infrared band, reduce the infrared radiation energy that reachs on the transparent display panel 11, can also cool off transparent display panel 11 and dispel the heat, guarantee that transparent display panel 11 has lower temperature, prevent that the high temperature from causing the influence to showing.
With reference to fig. 6, it should be noted that, in order to conduct and cool the transparent cooling liquid, a cooling liquid accommodating box 40 is further disposed in the transparent display device, and the cooling liquid accommodating box 40 and the transparent display panel 11 are not overlapped in the light emitting direction; the cooling liquid containing box 40 is communicated with the flow guide cavity 31 in the infrared absorber plate 30, that is, a liquid inlet and a liquid outlet of the flow guide cavity are communicated with the cooling liquid containing box 40, and the transparent cooling liquid circulates in the cooling liquid containing box 40 and the flow guide cavity 31. In addition, in consideration of the transparent display function of the transparent display device, it is necessary to ensure that the infrared heat absorbing plate 30 has uniform transmittance. Therefore, the transparent cooling liquid and the infrared absorber plate 30 may be provided with the same refractive index, and at this time, the transparent cooling liquid and the infrared absorber plate 30 have the same light refraction to the light inside the case structure 10, so that the image observed from the outside is not distorted. Illustratively, the transparent cooling fluid may be an acid-base salt solution or a sucrose solution. In addition, taking the infrared absorber plate as a PMMA plate as an example, the transparent cooling liquid may be a sodium chloride solution with a mass fraction of 96.4%, or may be a magnesium chloride solution with a mass fraction of 75.4%, or may be a sucrose solution with a mass fraction of 95.4%. The refractive indices of the transparent coolant and the PMMA plate were 1.49. It should be noted that there may be errors in the refractive index of the PMMA plate, and in order to ensure the uniformity of the light transmission, the mass fraction of the acid-base salt solution or the sucrose solution may be adjusted to meet the requirement of the uniform refractive index. For the PC board with a refractive index of 1.584, the mass fraction of the acid-base salt solution or the sucrose solution can be adjusted to obtain the transparent cooling liquid with the same refractive index, which is not described herein again.
Fig. 8 is a schematic structural diagram of another transparent display device according to an embodiment of the present invention, and referring to fig. 8, the transparent display device further includes a flow rate control unit 51, a pressure pump 52 and a temperature sensor 53, wherein the flow rate control unit 51 is electrically connected to the temperature sensor 53 and the pressure pump 52 respectively; the temperature sensor 53 is used for detecting the real-time temperature of the transparent display panel 11; the pressure pump 52 is arranged on a communication channel between the cooling liquid accommodating box 40 and the diversion cavity 31; the flow rate control unit 51 is used to adjust the flow rate of the transparent cooling liquid by controlling the pressure pump 52 according to the real-time temperature of the transparent display panel 11.
The flow rate of the transparent cooling liquid indicates the cooling capacity of the transparent cooling liquid to a certain extent, and when the temperature of the transparent display panel 11 rises to the threshold temperature, the flow rate of the transparent cooling liquid can be increased through the pressure pump 52, so that the cooling capacity of the transparent cooling liquid is increased, and the transparent display panel 11 is cooled, wherein the temperature rise of the transparent display panel 11 mainly refers to the heat generated when part of heat generated by infrared radiation reaches the transparent display panel 11 and the transparent display panel 11 is in the working state.
Fig. 9 is a schematic structural diagram of another transparent display device according to an embodiment of the present invention, and referring to fig. 9, the transparent display device is further provided with an air cooling device 61 and at least one heat insulating board 62 disposed on a side of the transparent display panel 11 away from the light emitting surface, air cooling channels 63 are disposed between the heat insulating board 62 and the transparent display panel 11 and between the transparent display panel 11 and the cooling liquid accommodating box 40, the cooling liquid accommodating box 40 is disposed at an air inlet of the transparent display device, and the air cooling device 61 is configured to blow air to the air cooling channels 63 to cool the heat insulating board 62 and the cooling liquid accommodating box 40. The air cooling device 61 may be a blower fan, and the strong air circulation is realized by the driving of a motor, so that the heat in the air cooling channel 63 is taken away, and the integral cooling is realized. In addition, with the coolant liquid holding box 40 set up at the air intake, can realize the cooling to coolant liquid holding box 40 through the lower air of ambient temperature, and then guarantee transparent coolant liquid to the cooling effect of infrared absorber plate 30.
Fig. 10 is a schematic structural view of another infrared heat conducting plate according to an embodiment of the present invention, in the above embodiment, the flow guiding cavity of the infrared heat absorbing plate may adopt a serpentine channel structure shown in fig. 7, and refer to fig. 10, the flow guiding cavity may also be a zigzag channel structure, and the serpentine channel structure and the zigzag channel structure are both provided with a liquid inlet 311 and a liquid outlet 312. The snakelike channel structure and the square-shaped channel structure can more uniformly cover the whole infrared heat absorbing plate, and the heat absorption and the temperature cooling of the transparent cooling liquid on the whole infrared heat absorbing plate are guaranteed.
Further, on the basis of the above embodiments, the embodiment of the present invention further provides an infrared absorber plate. In the infrared absorber plate, the flow guide cavity comprises at least two layers of flow guide channels which are arranged in a stacking mode along the light emitting direction, and the transparent display panel is completely covered by the vertical projection of the at least two layers of flow guide channels on the plane where the transparent display panel is located. At the moment, the flow guide channel can cover the whole transparent display panel, so that all areas of the transparent display panel covered by the infrared heat absorbing plate can be cooled, and the transparent display panel can be cooled. Fig. 11 is a schematic structural diagram of another infrared heat-conducting plate according to an embodiment of the present invention, and fig. 12 is a cross-sectional view along AA' of the infrared heat-conducting plate shown in fig. 11, referring to fig. 11 and 12, in the infrared heat-absorbing plate 30, the flow-guiding cavity 31 includes two layers of serpentine channel structures 310 stacked in the light-emitting direction, the sub-channel structures of the two layers of serpentine channel structures 310 are staggered from each other, and the sub-channels of the two layers of serpentine channel structures 310 are respectively located in the gaps of the sub-channels of the other layer of serpentine channel structure 310, so that the vertical projection of the two layers of serpentine channel structures 310 on the plane of the transparent display panel 11 completely covers the transparent display panel 11.
It should be noted that the transparent display device provided by the embodiment of the present invention may be an oven, a toaster, a microwave oven, or the like, wherein the heating portion of the toaster is a heating wire, and the heating portion of the microwave oven is a microwave generator. Further, the transparent display device includes a circuit structure for performing heating control and the like in addition to the respective structures provided in the above-described embodiments.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (13)
1. A transparent display device, comprising:
the display device comprises a shell structure, a display module and a display module, wherein the shell structure comprises a transparent display panel used for carrying out transparent display;
a heating part which heats the interior of the shell structure and generates infrared band light,
the infrared heat absorption plate is arranged on one side of the transparent display panel, which is far away from the light emitting surface; the infrared absorber plate absorbs the infrared band light and transmits the visible band light;
a flow guide cavity is arranged inside the infrared heat absorption plate, and transparent cooling liquid is contained in the flow guide cavity;
the refractive indexes of the transparent cooling liquid and the infrared heat absorption plate are the same.
2. The transparent display device according to claim 1, wherein the infrared absorber plate is doped with a near-infrared dye, and/or a metal oxide film is disposed on a surface of the infrared absorber plate parallel to a light-emitting surface of the transparent display panel, and an absorption band of the near-infrared dye and an absorption band of the metal oxide film are located in an infrared band.
3. The transparent display device according to claim 1, wherein the infrared absorber plate comprises a Polymethylmethacrylate (PMMA) plate or a Polycarbonate (PC) plate.
4. The transparent display device of claim 1, wherein the transparent cooling liquid comprises an acid-base salt solution or a sucrose solution.
5. The transparent display device of claim 1, wherein the flow guiding cavity is a serpentine channel structure or a zigzag channel structure, and the serpentine channel structure and the zigzag channel structure each have a liquid inlet and a liquid outlet.
6. The transparent display device according to claim 5, wherein the flow guide cavity comprises at least two layers of flow guide channels stacked along the light exit direction, and a vertical projection of the at least two layers of flow guide channels on a plane of the transparent display panel completely covers the transparent display panel.
7. The transparent display device according to claim 1, further comprising a cooling liquid containing tank that does not overlap with the transparent display panel in a light exit direction;
the cooling liquid containing box is communicated with the flow guide cavity in the infrared absorber plate, and the transparent cooling liquid circulates in the cooling liquid containing box and the flow guide cavity.
8. The transparent display device according to claim 7, further comprising a flow rate control unit, a pressure pump and a temperature sensor, the flow rate control unit being electrically connected to the temperature sensor and the pressure pump, respectively;
the temperature sensor is used for detecting the real-time temperature of the transparent display panel; the pressure pump is arranged on a communication channel between the cooling liquid accommodating box and the flow guide cavity; the flow rate control unit is used for adjusting the flow rate of the transparent cooling liquid by controlling the pressure pump according to the real-time temperature of the transparent display panel.
9. The transparent display device according to claim 8, further comprising an air cooling device and at least one heat insulating board disposed on a side of the transparent display panel facing away from the light emitting surface, wherein an air cooling channel is disposed between the heat insulating board and the transparent display panel and between the transparent display panel and the cooling liquid containing box, the cooling liquid containing box is disposed at an air inlet of the transparent display device, and the air cooling device is configured to blow air to the air cooling channel to cool the heat insulating board and the cooling liquid containing box.
10. The transparent display device according to claim 1, wherein the infrared absorber plate is attached to the transparent display panel by a transparent adhesive layer.
11. The transparent display device according to claim 1, wherein a gap is provided between the infrared heat absorbing plate and the transparent display panel.
12. The transparent display device of claim 1, wherein the transparent display panel further comprises backlight light bars disposed on two sides of the infrared absorber plate along a first direction, and the first direction is parallel to the light exit surface of the transparent display panel.
13. The transparent display device according to claim 1, wherein the transparent display device is an oven or a microwave oven.
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