Insect-expelling power panel in dish-washing machine

Abstract

The embodiment of the utility model discloses an insect-repelling power panel in a dish-washing machine, the insect-repelling power panel is arranged at the bottom of the dish-washing machine, and lighting equipment is arranged on the inner surface of the insect-repelling power panel and is electrically connected with the insect-repelling power panel; a micro-control unit is further arranged on the insect-repelling power panel and is electrically connected with the insect-repelling power panel; the micro-control unit is electrically connected with the lighting equipment; the micro-control unit comprises a turning-on unit and a turning-off unit of the lighting equipment; the opening unit and the closing unit are electrically connected with the lighting equipment; the lighting coverage area of the lighting device is larger than or equal to the area of the power panel. The lighting device is arranged on the power panel, so that night insects are effectively prevented from entering the power panel, the risk that the power panel breaks down is reduced, and the sanitation level is improved.

Description

Technical Field

[0001] This utility model relates to the field of kitchen and bathroom appliance technology, and in particular to an insect-repellent power board for a dishwasher. Background Technology

[0002] The advent of dishwashers has brought great convenience to our lives. Built-in dishwashers, once installed, are rarely moved. However, because dishwashers cannot be completely sealed, and their base is close to the ground, bacteria can easily grow, allowing nocturnal insects such as cockroaches and small cockroaches to enter the dishwasher's base or power supply. This can cause a short circuit in the power supply, re-contaminating the dishwasher, affecting the user experience, and potentially impacting the user's health.

[0003] Currently, in the kitchen appliance industry, electronic components are protected using AB glue, conformal coating, and UV adhesive to achieve dustproof and insulating protection. With the continuous development of potting technology and the increasing maturity of potting equipment, the previously used thick layers of AB glue, due to their high cost, are gradually being replaced by thinner layers of conformal and UV adhesives, significantly reducing costs and improving production efficiency. However, thinner layers of conformal or UV adhesives are not corrosion-resistant. Many defective products on the market indicate that power boards coated with conformal adhesive suffer long-term corrosion from insect excrement, damaging the conformal coating and subsequently corroding electronic components. This leads to damaged component solder pads, open circuits, increased repair rates, and a negative impression on users.

[0004] Therefore, it is particularly important to develop an insect-repellent power board for dishwashers that effectively prevents nocturnal insects from entering the power board, thereby reducing the risk of power board failure and improving hygiene. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides an insect-repelling power board for a dishwasher. By distributing lighting devices on the power board, sufficient light source is ensured, thereby achieving the purpose of repelling nocturnal insects. This effectively prevents nocturnal insects from entering the power board, thus reducing the risk of power board malfunction and improving hygiene.

[0006] The technical solution provided in this application is as follows:

[0007] On one hand, this application provides an insect repellent power board for a dishwasher, wherein the insect repellent power board is provided at the bottom of the dishwasher, and a lighting device is provided on the inner surface of the insect repellent power board, and the lighting device is electrically connected to the insect repellent power board.

[0008] The insect repellent power board is also equipped with a microcontroller unit, which is electrically connected to the insect repellent power board.

[0009] The microcontroller unit is electrically connected to the lighting device; the microcontroller unit includes an on / off unit and a off / on unit for the lighting device; both the on / off unit and the off / on unit are electrically connected to the lighting device.

[0010] The lighting coverage area of ​​the lighting device is greater than or equal to the area of ​​the power board.

[0011] In some alternative embodiments, a first lighting device is provided at the center of the inner surface of the insect repellent power board;

[0012] A second lighting device is provided in a predetermined direction on the inner surface of the insect repellent power board.

[0013] In some optional embodiments, a second lighting device is provided in a predetermined direction on the inner surface of the insect-repellent power board, including at least one of the following:

[0014] The second lighting device is provided in the horizontal direction passing through the center of the insect repellent power board;

[0015] The second lighting device is provided in the vertical direction passing through the center of the insect repellent power board;

[0016] The second lighting device is installed along the first preset direction, passing through the center of the insect repellent power board;

[0017] The second lighting device is installed along the second preset direction, passing through the center of the insect repellent power board;

[0018] The first preset direction and the second preset direction intersect at the center of the insect repellent power board.

[0019] In some optional embodiments, a plurality of second lighting devices are provided in a predetermined direction on the inner surface of the insect repellent power board, wherein the distance between two adjacent second lighting devices in one predetermined direction is the second lighting coverage diameter of the second lighting device.

[0020] In some alternative implementations, the sum of the first lighting coverage area of ​​the first lighting device and the second lighting coverage area of ​​a plurality of the second lighting devices is greater than or equal to the area of ​​the insect repellent power board.

[0021] In some optional embodiments, the first lighting coverage area of ​​the first lighting device is the area of ​​a circle with the center of the first lighting device as the center and the diameter of the first lighting coverage area of ​​the first lighting device as the diameter;

[0022] The second lighting coverage area of ​​the second lighting device is the area of ​​a circle with the center of the second lighting device as the center and the diameter of the second lighting coverage area of ​​the second lighting device as the diameter.

[0023] In some alternative embodiments, a first lighting device is provided at the center of the inner surface of the insect repellent power board;

[0024] A second lighting device is provided in a predetermined direction on the inner surface of the insect repellent power board;

[0025] The preset direction is a concentric circle with the center of the insect repellent power board as the center, and the radial spacing of the concentric circles is the second lighting coverage diameter of the second lighting device.

[0026] In some alternative implementations, the lighting device is electrically connected to the power board via a transistor circuit.

[0027] In some optional embodiments, the microcontroller unit includes a first on unit and a first off unit of the first lighting device and a second on unit and a second off unit of the second lighting device, wherein the first on unit, the first off unit, the second on unit, and the second off unit are all independent of each other.

[0028] On the other hand, this application provides a dishwasher that includes an insect-repellent power board as described in any one of the embodiments, and the lighting device is disposed at the bottom or side wall of the dishwasher.

[0029] By adopting the above technical solution, the insect-repellent power board in the dishwasher provided in this application has the following beneficial effects:

[0030] A lighting device is installed on the inner surface of the insect-repellent power board. The lighting device is electrically connected to the insect-repellent power board. A microcontroller unit is also installed on the insect-repellent power board, and the microcontroller unit is electrically connected to the lighting device. The microcontroller unit includes an on-off unit and an off-off unit for the lighting device. Both the on-off unit and the off-off unit are electrically connected to the lighting device. The lighting coverage area of ​​the lighting device is greater than or equal to the area of ​​the power board. By installing a lighting device on the power board, sufficient light source can be ensured to effectively prevent nocturnal insects from entering the power board, thereby reducing the risk of power board failure and improving hygiene. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the insect-repellent power board in a dishwasher according to an embodiment of the present invention;

[0033] Figure 2 This is a circuit diagram of the lighting device of the insect repellent power board in a dishwasher according to an embodiment of the present invention.

[0034] The following is supplementary explanation of the attached figures:

[0035] 1-Insect repellent power board; 2-Lighting equipment; 201-First lighting equipment; 202-Second lighting equipment. Detailed Implementation

[0036] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0037] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this application. In the description of this application, it should be understood that the terms "upper," "lower," "top," "bottom," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein.

[0038] When a numerical range is disclosed herein, the range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between the minimum and maximum values. Furthermore, when the range refers to an integer, it includes every integer between the minimum and maximum values ​​of the range. Additionally, when multiple ranges are provided to describe a feature or characteristic, the ranges may be combined. In other words, unless otherwise specified, all ranges disclosed herein should be understood to include any and all subranges to which they are included. For example, a specified range from “1 to 10” should be considered to include any and all subranges between the minimum value 1 and the maximum value 10. Exemplary subranges of the range 1 to 10 include, but are not limited to, 1 to 6.1, 3.5 to 7.8, 5.5 to 10, etc.

[0039] Currently, electronic components are protected using potting AB glue, conformal coating, and UV adhesive. However, conformal coatings and UV adhesives are not corrosion-resistant, and insect excrement can corrode and damage the conformal coating over time, subsequently corroding the electronic components and causing damage to the component solder pads. Therefore, to prevent nocturnal insects from entering the power board, thereby reducing the risk of power board failure and improving hygiene, this application provides an insect-repellent power board for a dishwasher.

[0040] Please see Figure 1 , Figure 1 This is a schematic diagram of an insect-repelling power board in a dishwasher according to an embodiment of the present invention. In one aspect, the insect-repelling power board in the dishwasher provided in this application has an insect-repelling power board 1 disposed at the bottom of the dishwasher, and a lighting device 2 disposed on the inner surface of the insect-repelling power board 1, the lighting device 2 being electrically connected to the insect-repelling power board 1;

[0041] The insect repellent power board 1 is also provided with a microcontroller unit, which is electrically connected to the insect repellent power board 1.

[0042] The microcontroller unit is electrically connected to the lighting device 2; the microcontroller unit includes an on / off unit and an off / off unit of the lighting device 2; both the on / off unit and the off / off unit are electrically connected to the lighting device 2.

[0043] The lighting coverage area of ​​the lighting device 2 is greater than or equal to the area of ​​the insect repellent power board 1.

[0044] Optionally, the insect repellent power board 1 is used to convert external power into the voltage required by the dishwasher, and can be located at the bottom or side of the dishwasher.

[0045] Optionally, the shape and area of ​​the insect repellent power board 1 can be set according to actual business needs, and are not limited here. For example, the shape of the insect repellent power board 1 can be rectangular or other shapes.

[0046] Optionally, a power board box can be installed at the bottom of the dishwasher, with the insect repellent power board 1 installed inside the power board box. Alternatively, the insect repellent power board 1 can be designed as an open power board box without a cover, allowing the light source of the lighting device 2 to diffusely illuminate a larger area of ​​the dishwasher base. At the same time, the power board box can effectively isolate live components, increasing safety, and can also protect the insect repellent power board 1 from external dust, moisture, etc., thus extending the service life of the insect repellent power board 1.

[0047] Optionally, the lighting device 2 and the microcontroller unit can be connected to the insect repellent power board 1 using surface mount technology. Solder paste is pre-applied to designated locations on the insect repellent power board 1, corresponding to the solder pads of the microcontroller unit. An automated machine precisely places the microcontroller unit onto the solder paste-coated insect repellent power board 1. The power board is then heated in a reflow oven, melting the solder paste and connecting the solder pads of the microcontroller unit to the solder joints on the power board. Using surface mount technology to electrically connect the lighting device 2 and the microcontroller unit to the insect repellent power board 1 facilitates automated assembly, improves production efficiency, reduces labor costs, and the electrical connection of surface mount connections is generally superior to through-hole connections, thus improving the performance of the microcontroller unit.

[0048] Optionally, the form of the lighting device 2 can be set according to actual business needs, and is not limited here. For example, the lighting device 2 can be a light-emitting diode.

[0049] Optionally, the microcontroller unit includes an on / off unit and an off / on unit for the lighting device 2. The microcontroller unit controls the on / off of the lighting device 2 through the program corresponding to the on / off unit. For example, the lighting device 2 can be kept on continuously by the program in the microcontroller unit, or the lighting device 2 can be turned on at a set time by the program in the microcontroller unit.

[0050] Optionally, the dishwasher may be integrated with a smart control panel, allowing users to control the switching on and off of the lighting equipment 2 via function buttons on the smart control panel.

[0051] Optionally, the lighting coverage area of ​​the lighting device 2 is greater than or equal to the area of ​​the insect repellent power board 1, which can ensure that there is sufficient light source on the entire insect repellent power board 1. Sufficient light source can play a repelling role, thereby preventing nocturnal insects such as cockroaches from entering the insect repellent power board 1, thereby reducing the risk of power board failure and improving the hygiene level.

[0052] In an optional embodiment, a first lighting device 201 is provided at the center of the inner surface of the insect repellent power board 1;

[0053] A second lighting device 202 is provided in a predetermined direction on the inner surface of the insect repellent power board 1.

[0054] Optionally, a first lighting device 201 is provided at the center of the insect repellent power board 1, and a second lighting device 202 is provided at other positions of the insect repellent power board 1, so as to ensure sufficient light source.

[0055] In an optional embodiment, a second lighting device 202 is provided in a predetermined direction on the inner surface of the insect repellent power board 1, including at least one of the following:

[0056] The second lighting device 202 is provided in the horizontal direction passing through the center of the insect repellent power board 1;

[0057] The second lighting device 202 is provided in the vertical direction passing through the center of the insect repellent power board 1;

[0058] The second lighting device 202 is provided along the first preset direction, passing through the center of the insect repellent power board 1;

[0059] The second lighting device 202 is provided along the second preset direction, passing through the center of the insect repellent power board 1;

[0060] The first preset direction and the second preset direction intersect at the center of the insect repellent power board 1.

[0061] In an optional embodiment, a plurality of second lighting devices 202 are provided in a predetermined direction on the inner surface of the insect repellent power board 1, and in one of the predetermined directions, the distance between two adjacent second lighting devices 202 is the second lighting coverage diameter of the second lighting device 202.

[0062] In an optional embodiment, the sum of the first lighting coverage area of ​​the first lighting device 201 and the second lighting coverage area of ​​a plurality of second lighting devices 202 is greater than or equal to the area of ​​the insect repellent power board 1.

[0063] Optionally, the preset direction can be set according to the shape and area of ​​the insect repellent power board 1, without limitation. For example, when the insect repellent power board 1 is rectangular, two preset directions can be set, namely the two angle bisectors of the horizontal line and the vertical line passing through the center. A first lighting device 201 is set at the center, and several second lighting devices 202 are set in the two preset directions. The distance between two adjacent second lighting devices 202 is the second lighting coverage diameter of the second lighting device 202.

[0064] Optionally, when the insect repellent power board 1 is rectangular, several preset directions intersecting the center of the insect repellent power board 1 can be set between the horizontal and vertical lines passing through the center. Several second lighting devices 202 are set in each of the several preset directions. The distance between two adjacent second lighting devices 202 is the second lighting coverage diameter of the second lighting device 202. The sum of the first lighting coverage area of ​​the first lighting device 201 and the second lighting coverage area of ​​the several second lighting devices 202 is greater than or equal to the area of ​​the insect repellent power board 1.

[0065] In an optional embodiment, the first lighting coverage area of ​​the first lighting device 201 is the area of ​​a circle with the center of the first lighting device 201 as the center and the first lighting coverage diameter of the first lighting device 201 as the diameter.

[0066] The second lighting coverage area of ​​the second lighting device 202 is the area of ​​a circle with the center of the second lighting device 202 as the center and the diameter of the second lighting coverage area of ​​the second lighting device 202 as the diameter.

[0067] Optionally, both the first lighting device 201 and the second lighting device 202 can be small light-emitting diodes, and the area covered by the illumination is circular. The distance between two adjacent second lighting devices 202 is the second illumination coverage diameter of the second lighting device 202, and the distance between the first lighting device 201 and the nearest second lighting device 202 is the first illumination coverage diameter of the first lighting device 201. This layout can ensure a more uniform light distribution, so that there are no unlit dead corners in the entire insect repellent power board area, and maximize the lighting effect of each lighting device to improve the effect of repelling nocturnal insects.

[0068] In an optional embodiment, a first lighting device 201 is provided at the center of the inner surface of the insect repellent power board 1;

[0069] A second lighting device 202 is provided in a predetermined direction on the inner surface of the insect repellent power board 1;

[0070] The preset direction is a concentric circle with the center of the insect repellent power board 1 as the center, and the distance between the concentric circles is the second lighting coverage diameter of the second lighting device 202.

[0071] Optionally, the lighting devices 2 can also be arranged in concentric circles. For example, when the insect-repellent power board 1 is circular, a first lighting device 201 can be placed at the center of the inner surface of the insect-repellent power board 1. The second lighting devices 202 are arranged in concentric circles with the center of the inner surface of the insect-repellent power board 1 as the center and the second lighting coverage diameter of the second lighting devices 202 as the spacing. The distance between two adjacent second lighting devices 202 on the same circumference is the second lighting coverage diameter of the second lighting device 202. By ensuring that the distance between the lighting devices is equal to their coverage diameter, the lighting effect of each lighting device can be maximized, resource waste can be avoided, costs can be saved, and the insect-repellent effect can be maximized.

[0072] In an optional embodiment, the lighting device (2) is electrically connected to the insect repellent power board (1) via a transistor circuit.

[0073] Please see Figure 2 , Figure 2 This is a circuit diagram of the lighting device of the insect repellent power board in a dishwasher according to an embodiment of the present invention. Optionally, each lighting device 2 can be electrically connected to the insect repellent power board 1 via a transistor circuit, which includes a light-emitting diode, a DC power supply, a transistor, and several resistors. The light-emitting diode is used to emit light when the circuit is turned on; the DC power supply provides the required DC current to the transistor circuit, including base current, collector current, and emitter current, and the magnitude of the current determines the conduction state of the transistor; the several resistors are used to adjust the bias current and protect the transistor from damage.

[0074] Optionally, a transistor requires a corresponding current to function properly and acts as a switch in the circuit, controlling the on / off state of the circuit. For example, when there is not enough current flowing into the base of the transistor, the transistor will not conduct, and the resistance between the collector and emitter is very large, which is equivalent to the switch being in the open state, and the current in the circuit is almost zero. When there is enough current flowing into the base of the transistor, the transistor will enter the saturation state. At this time, the resistance between the collector and emitter is very small, which is equivalent to the switch being in the closed state, and the current in the circuit can flow freely.

[0075] Optionally, when the microcontroller inputs a high-level control signal to the circuit, the transistor circuit is turned on, and the light-emitting diode, i.e., the lighting device 2, lights up; when the control signal is low-level, the transistor is turned off, the transistor circuit is not turned on, and the light-emitting diode, i.e., the lighting device 2, does not light up.

[0076] By setting up a transistor circuit to control the lighting device 2 to turn on and off, the switching control of the transistor usually only requires a current signal, which makes the control circuit design simple. At the same time, the power consumption of the transistor is very small when it is in the off state, and the transistor can quickly switch states, which can achieve precise control of the current and signal in the circuit.

[0077] In an optional embodiment, the microcontroller unit includes a first on unit and a first off unit of the first lighting device 201 and a second on unit and a second off unit of the second lighting device 202, wherein the first on unit, the first off unit, the second on unit, and the second off unit are all independent of each other.

[0078] Optionally, the first lighting device 201 and several second lighting devices 202 are independent of each other, and the microcontroller unit can control all lighting devices 2 individually. Independent lighting devices can be controlled individually as needed, providing greater flexibility. Users can turn specific lights on or off according to actual needs, and the failure of lighting device 2 will not affect the operation of other lighting devices 2, which reduces overall maintenance costs.

[0079] In an optional embodiment, this application proposes a dishwasher that includes an insect-repellent power board as described in any of the above embodiments, and the lighting device 2 is disposed at the bottom or side wall of the dishwasher.

[0080] The insect-repellent power board in the dishwasher provided in this application has an insect-repellent power board 1 located at the bottom of the dishwasher. A lighting device 2 is installed on the inner surface of the insect-repellent power board 1 and is electrically connected to it. A microcontroller unit is also installed on the insect-repellent power board 1 and is electrically connected to both the insect-repellent power board 1 and the lighting device 2. The microcontroller unit includes an on / off unit and a off / open unit for the lighting device 2. Both the on / off unit and the off / open unit are electrically connected to the lighting device 2. The lighting coverage area of ​​the lighting device 2 is greater than or equal to the area of ​​the insect-repellent power board 1. By installing a lighting device on the power board, the insect-repellent power board in the dishwasher provided in this application can effectively prevent nocturnal insects from entering the power board, thereby reducing the risk of power board malfunction and improving hygiene.

[0081] The above description is only an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pest-repellent power board for a dishwasher, characterized in that, The bottom of the dishwasher is provided with the insect repellent power board (1), and the inner surface of the insect repellent power board (1) is provided with a lighting device (2), which is electrically connected to the insect repellent power board (1). The insect repellent power board (1) is also provided with a micro control unit, which is electrically connected to the insect repellent power board (1); The microcontroller unit is electrically connected to the lighting device (2); the microcontroller unit includes an on-off unit and an off-off unit of the lighting device (2); both the on-off unit and the off-off unit are electrically connected to the lighting device (2); The lighting coverage area of ​​the lighting device (2) is greater than or equal to the area of ​​the insect repellent power board (1).

2. The insect-repellent power board in the dishwasher according to claim 1, characterized in that, A first lighting device (201) is provided at the center of the inner surface of the insect repellent power board (1); A second lighting device (202) is provided in a predetermined direction on the inner surface of the insect repellent power board (1).

3. The insect-repellent power board in the dishwasher according to claim 2, characterized in that, A second lighting device (202) is provided in a predetermined direction on the inner surface of the insect repellent power board (1), including at least one of the following: The second lighting device (202) is provided in the horizontal direction passing through the center of the insect repellent power board (1); The second lighting device (202) is provided in the vertical direction passing through the center of the insect repellent power board (1); The second lighting device (202) is provided in the first preset direction, passing through the center of the insect repellent power board (1); The second lighting device (202) is provided in the second preset direction, passing through the center of the insect repellent power board (1); The first preset direction and the second preset direction intersect at the center of the insect repellent power board (1).

4. The insect-repellent power board in the dishwasher according to claim 3, characterized in that, On the inner surface of the insect repellent power board (1), a plurality of second lighting devices (202) are provided in a predetermined direction. In one of the predetermined directions, the distance between two adjacent second lighting devices (202) is the second lighting coverage diameter of the second lighting device (202).

5. The insect-repellent power board in the dishwasher according to claim 4, characterized in that, The sum of the first lighting coverage area of ​​the first lighting device (201) and the second lighting coverage area of ​​a plurality of second lighting devices (202) is greater than or equal to the area of ​​the insect repellent power board (1).

6. The insect-repellent power board in the dishwasher according to claim 5, characterized in that, The first lighting coverage area of ​​the first lighting device (201) is the area of ​​a circle with the center of the first lighting device (201) as the center and the diameter of the first lighting coverage area of ​​the first lighting device (201) as the diameter; The second lighting coverage area of ​​the second lighting device (202) is the area of ​​a circle with the center of the second lighting device (202) as the center and the diameter of the second lighting coverage area of ​​the second lighting device (202) as the diameter.

7. The insect-repellent power board in the dishwasher according to claim 1, characterized in that, A first lighting device (201) is provided at the center of the inner surface of the insect repellent power board (1); A second lighting device (202) is provided in a predetermined direction on the inner surface of the insect repellent power board (1); The preset direction is a concentric circle with the center of the insect repellent power board (1) as the center, and the radial spacing of the concentric circles is the second lighting coverage diameter of the second lighting device (202).

8. The insect-repellent power board in the dishwasher according to claim 1, characterized in that, The lighting device (2) is electrically connected to the insect repellent power board (1) via a transistor circuit.

9. The insect-repellent power board in the dishwasher according to claim 2, characterized in that, The microcontroller unit includes a first on unit and a first off unit of the first lighting device (201) and a second on unit and a second off unit of the second lighting device (202), wherein the first on unit, the first off unit, the second on unit, and the second off unit are all independent of each other.

10. A dishwasher, characterized in that, The dishwasher includes an insect-repellent power board as described in any one of claims 1 to 9, and the lighting device (2) is disposed at the bottom or side wall of the dishwasher.

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