JP7588348B2 - Display device and cooking device equipped with said display device - Google Patents

Description

The present invention relates to a display device having a display window. It also relates to a cooking device equipped with the display device.

Induction heating cookers have a heating device and its control circuitry. To cool these components, the main body is usually provided with intake and exhaust vents. This can allow insects to enter from the outside and take up residence. If insects get in, there is a risk of short circuits occurring in the heating device and its control circuitry.

In addition, because the operating status of the heating device is displayed through a light-emitting display window on the top plate, there is a risk that users may be uncomfortable seeing insects through this display window.

In conventional induction cooking devices, the control circuit and the operation unit connected by a cable are housed in a sealed box with the operation switch surface covered by a panel sheet, and the cable outlet of the box housing the operation circuit is sealed with a packing or bushing (see, for example, Patent Document 1). This prevents pests, water, etc. from entering the control circuit and operation circuit.

JP 2000-82577 A

However, the induction cooking device requires the provision of parts such as a sealed box or gasket, which increases the number of components.

Therefore, the present invention aims to provide a display device that prevents insects from entering without the need for a sealed structure.

The display device according to the present invention comprises a top plate having a display window on the top surface of the main body for displaying the operating state, etc., a display sheet provided below the display window of the top plate, and a light-emitting display device provided below the display sheet and emitting light through the display sheet and the display window, and an ink layer containing an insect repellent is provided on the top or back surface of the display sheet.

The display device according to the present invention has an ink layer containing an insect repellent on the top or back surface of the display sheet, so that it is possible to prevent insects from entering without providing an airtight structure.

1 is a schematic cross-sectional view showing a cross-sectional configuration of a display device according to a first embodiment. FIG. 2 is a plan view of the display sheet of FIG. 1 . FIG. 11 is a schematic perspective view showing an overview of a heating cooker according to a second embodiment. FIG. 11 is a plan view of the cooking device according to the second embodiment, as viewed from above the top plate. 3B is an exploded perspective view showing each member provided on the lower surface of the top plate of the cooking device of FIG. 3A. FIG.

The display device according to the first aspect comprises a top plate having a display window on the top surface of the main body for displaying the operating state, etc., a display sheet provided below the display window of the top plate, and a light-emitting display device provided below the display sheet for emitting light through the display sheet and the display window, and an ink layer containing an insect repellent is provided on the top or back surface of the display sheet.

According to the above configuration, an ink layer containing an insect repellent is provided on the upper or rear surface of the display sheet, so that the intrusion of insects can be suppressed without providing an airtight structure.

The display device according to the second aspect is the display device according to the first aspect, wherein the ink layer is made of UV-curable ink.

The above configuration allows for improved processing speed.

The display device according to the third aspect is the display device according to the first or second aspect, in which the ink layer is disposed on the outer periphery directly below the display window.

The above configuration can avoid light from the display window, which can prevent the repellent from deteriorating and provide a repellent effect at the entrance where insects enter.

The display device according to the fourth aspect is any one of the first to third aspects, in which the ink layer may be provided in an area that cannot be seen through the display window.

With the above configuration, the repellent can be mixed into the area without worrying about aesthetics, as it is not visible.

The display device according to the fifth aspect is any one of the first to fourth aspects described above, in which the ink layer may be disposed on the outer periphery of the area facing the light-emitting display unit of the light-emitting display device.

The above configuration can prevent unevenness in the liquid crystal portion.

The display device according to the sixth aspect is any one of the first to fifth aspects, in which the upper surface of the display sheet on which the ink layer is provided may have greater irregularities than the rear surface.

The above configuration has the effect that unevenness is difficult to notice even if the amount of repellent increases due to the unevenness of the upper surface.

The seventh aspect of the display device is any one of the first to sixth aspects described above, and includes an intake and exhaust port for cooling and a cooling fan inside the main body, and the display sheet may include an air passage to the intake and exhaust port on the outer periphery.

The above configuration allows heat-generating components to be cooled.

The display device according to the eighth aspect is any one of the first to seventh aspects described above, in which the side or back surface of the main body does not have to be a repellent steel plate to which a repellent is attached.

The heating cooker according to the ninth aspect includes a display device according to any one of the first to eighth aspects and a heating device provided inside the main body for heating an object to be heated that is placed on the top plate.

The following describes a display device according to an embodiment and a cooking device equipped with the display device with reference to the accompanying drawings. Note that substantially identical components in the drawings are given the same reference numerals.

(Embodiment 1)
Fig. 1 is a schematic cross-sectional view showing a cross-sectional configuration of a display device 20 according to embodiment 1. Fig. 2 is a plan view of a display sheet 2 in Fig. 1 .
This display device 20 comprises a top plate 10, a display sheet 2, and a light-emitting display device 4. The top plate 10 has a display window 1 on the top surface of the main body for displaying the operating state and the like. The display sheet 2 is provided below the display window of the top plate 10, and an ink layer 3 containing an insect repellent is provided on the upper or rear surface of the display sheet 2. The light-emitting display device 4 is provided below the display sheet 2, and emits light to display through the display sheet 2 and the display window 1.
According to this display device 20, since the ink layer 3 containing an insect repellent is provided on the upper or rear surface of the display sheet 2, the intrusion of insects can be suppressed without providing an airtight structure.

The components that make up this display device 20 are described below.

<Top plate>
The top plate 10 includes a glass plate 8. The glass plate 8 is transparent and is made of crystallized glass so that it can withstand heat. The top plate 10 also has a display window 1 for displaying the operating state and the like. Furthermore, the top plate 10 has a reverse printed portion 5 on the reverse side, for example, to define the display window 1.

<Display sheet>
The display sheet 2 is provided below the display window 1. Meanwhile, the display sheet 2 is disposed above the light-emitting display device. An ink layer 3 containing an insect repellent is provided on the upper or rear surface of the display sheet 2. A color layer having a black color or a desired color tone is provided on the rear surface of the display sheet 2. The display sheet 2 may be made of paper or resin. Furthermore, the upper or rear surface of the display sheet 2 may be provided with irregularities. Even if there are uneven spots in the application of the repellent, they are less noticeable when there are irregularities. Furthermore, by providing the ink layer 3 on the irregularities, the volume of the ink layer 3 can be increased, and the amount of repellent applied to the display sheet 2 can be increased. The upper surface of the display sheet 2 on which the ink layer 3 is provided may be more uneven than the rear surface.
The display sheet 2 may have an opening 6 corresponding to the display window 1, as shown in Fig. 2, for example. The opening 6 may be an actual opening formed by providing a through hole in the display sheet 2, or may be an opening as a transparent portion defined by an opaque printed layer on the back surface side. In the latter case, the opening 6 is a transparent portion, and an ink layer 3 may be provided on the upper surface or back surface thereof. In addition, for example, printing may be provided around the opening 6. The ink layer 3 may be provided around the opening 6.

<Ink Layer>
The ink layer 3 is provided on the upper or rear surface of the display sheet 2 and contains an insect repellent. The ink layer 3 is formed on the upper or rear surface by, for example, applying a UV-curable ink made of a UV-curable resin containing a repellent, and then irradiating the ink with UV light to cure the ink. Since it is a UV-curable ink, compared to the time required for solvent evaporation when using ink containing a normal solvent, the UV curing can be performed in a short time, and the speed of surface processing can be improved.

The ink layer 3 can be formed, for example, by UV printing. Alternatively, a repellent may be mixed into a matte ink and applied to the upper or rear surface of the display sheet 2. Also, a tape containing a repellent may be attached to the upper or rear surface of the display sheet 2.

The ink layer 3 may be disposed on the outer periphery directly below the display window 1. This can avoid light from the display window 1, thereby suppressing deterioration of the repellent and providing a repellent effect at the entrance where insects enter. Also, as shown in Figures 1 and 2, the ink layer 3 may be disposed on the upper surface of the display sheet 2. Since the upper surface of the display sheet 2 has an area visible from the display window 1, by disposing the ink layer 3 on the upper surface, it is possible to more efficiently prevent insects from entering the upper surface. Furthermore, the ink layer 3 may be disposed on the outer periphery of the area facing the light-emitting display unit of the light-emitting display device 4. This can suppress the occurrence of unevenness in the area of the display sheet 2 facing the light-emitting display unit (e.g., the liquid crystal portion). Similarly, the ink layer 3 may be disposed on the outer periphery directly below the display window 1, avoiding the area directly below the display window 1. This can suppress the occurrence of unevenness in the area of the display sheet 2 facing the light-emitting window 1, improving the visibility of the display. The ink layer 3 may be disposed on the back surface. In that case, by providing the ink layer 3 in an area that cannot be seen through the display window 1, the repellent can be blended without worrying about aesthetics.

The repellent may be, for example, a pyrethroid-based repellent, which is usually used to repel insects such as cockroaches and mosquitoes. The repellent is not limited to pyrethroid-based, and may be any repellent that repels target insects. The repellent effect on insects by the repellent is not limited to the volatilization of the repellent, but may be the repellent effect caused by contact of the insects with the repellent. Many repellents may deteriorate due to UV light, but a larger amount may be included in consideration of the amount that is deactivated by deterioration. The content of the repellent is, for example, in the range of 5% to 20% by weight, assuming that the entire ink other than the repellent is 100% by weight. If the content of the repellent is too high, the surface condition of the ink layer will deteriorate. If the content of the repellent is too low, a sufficient repellent effect on insects will not be obtained.

<Light-emitting display device>
The light-emitting display device 4 is provided below the display sheet 2. For example, the light-emitting display device 4 may be disposed in contact with the rear surface of the display sheet 2. The light-emitting display device 4 is, for example, a liquid crystal display device. The light-emitting display device 4 is not limited to a liquid crystal display device, and may be, for example, an inorganic EL display device, an organic EL display device, or the like.

(Embodiment 2)
<Cooking appliance>
Fig. 3A is a schematic perspective view showing an overview of the cooking device 30 according to embodiment 2. Fig. 3B is a plan view seen from the upper surface of the top plate 10 of the cooking device 30 according to embodiment 2. Fig. 4 is an exploded perspective view showing each member provided on the lower surface of the top plate 10 of the cooking device 30 of Fig. 3A.
This cooking appliance 30 includes the display device 20 according to the first embodiment and a heating device 14. In addition to the heating device 14, the cooking appliance 30 may include a control unit 16, a main body case 12, an intake and exhaust port (not shown), and a cooling fan (not shown).

<Heating device>
In the case where the cooking appliance is an induction cooking appliance, the heating device 14 is a coil for induction heating, and a mica layer 15 is provided as a heat insulating material or an insulating material or the like at the portion facing the glass plate 8. The coil has a size that matches the diameter of a pot, frying pan, or the like to be placed on the top plate 10. For example, as shown in FIG. 2, three heating devices 14 may be provided. Also, the diameters of the coils may be different. Specifically, in the example of FIG. 3B, the coil at the back is the smallest, the coil on the left is of intermediate size, and the coil on the right is the largest. Also, a grill or the like for heating with a heater or the like may be provided at the bottom.
The cooking device of the present disclosure is not limited to an induction cooking device. For example, in the case of a cooking device using a heater or a gas cooking device, a heating portion is provided on the upper surface of the glass plate.

<Control Unit>
When the cooking device is an induction cooking device, it has a control unit 16 for controlling a heating device 14 such as a coil.

<Intake and exhaust vents>
An intake/exhaust port (not shown) for supplying and discharging outside air may be provided inside the main body. There may be one intake/exhaust port, or two or more. If there are two or more intake/exhaust ports, the intake/exhaust port may be divided into an intake port and an exhaust port. In this case, an air path is formed from the intake port to the exhaust port.

<Cooling fan>
A cooling fan (not shown) may be provided to cool the heating device 14. The cooling fan can cool heat-generating components such as the heating device 14. The cooling fan may generate air so as to form an air path from the intake port to the exhaust port. The number of cooling fans is not limited to one, and multiple fans may be provided.

<Main body case>
The heating device 14, the control unit 16, etc. are stored in the main body case 12. The steel plates of the main body case 12 include a first steel plate 12a constituting the side surface and a second steel plate 12b which forms the front surface and is disposed below the display sheet 2. For example, the first steel plate 12a may be a so-called repellent steel plate coated with a repellent. Since the second steel plate 12b is a display sheet 2 on which a repellent is printed, it is not necessary to use a repellent steel plate.
In addition to the above, the cooking device may be provided with, for example, a power supply unit and an operation unit such as an operation panel. In addition, a portion for intake and exhaust for cooling the power supply unit, the control unit, etc. In addition, in the cooking device according to the second embodiment, Fig. 1 is a schematic cross-sectional view showing, for example, a cross-sectional structure seen in the direction A-A in Fig. 3B.

Note that, although the case where the cooking device is equipped with a heating device in addition to a display device has been described here, the present invention is not limited to this. Anything that includes a display device may be used, for example, an electric heater, rice cooker, toaster oven, oven, refrigerator, washing machine, microwave oven, television, video, etc.

Note that this disclosure includes appropriate combinations of any of the various embodiments and/or examples described above, and can achieve the effects of each embodiment and/or example.

According to the display device of the present invention, an ink layer containing an insect repellent is provided on the upper or rear surface of the display sheet, so that the intrusion of insects can be suppressed without providing an airtight structure. Therefore, this display device can be used in various electrical appliances such as cooking appliances, electric heaters, rice cookers, toaster ovens, ovens, refrigerators, washing machines, microwave ovens, televisions, and videos.

Reference Signs List 1 Display window 2 Display sheet 3 Ink layer 4 Light-emitting display device 5 Backside print section 6 Opening 8 Glass plate 10 Top plate 12 Body case 12a First steel plate 12b Second steel plate 14 Heating device 15 Mica layer 16 Control unit 20 Display device 30 Cooking device

Claims (7)

a top plate having a display window for displaying the operating state of the heating device on an upper surface of the main body;
An intake and exhaust port for cooling inside the main body;
A cooling fan,
a display sheet provided below the display window of the top plate;
a light-emitting display device provided below the display sheet and emitting light through the display sheet and the display window;
Equipped with
A display device in which an ink layer containing an insect repellent is provided on the outer periphery of the upper surface or the outer periphery of the back surface of the display sheet, the display sheet is positioned with a gap between it and the top plate, and the gap is part of an air path formed by the intake and exhaust port and the cooling fan. The display device according to claim 1 , wherein the ink layer is made of a UV-curable ink. The display device according to claim 1 , wherein the ink layer is disposed on an outer periphery immediately below the display window. The display device according to claim 1 , wherein the ink layer is provided in an area that cannot be seen through the display window. The display device according to claim 1 , wherein the upper surface of the display sheet on which the ink layer is provided has greater irregularities than the rear surface. The display device according to claim 1 , wherein the side surface or the back surface of the main body is not a repellent steel plate having a repellent agent attached thereto. A display device according to any one of claims 1 to 6 ,
A heating device provided inside the main body and configured to heat an object to be heated placed on the top plate;
A heating cooker equipped with

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