JP2013137155A - High-frequency heating device with range hood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance illuminance of a lighting device while life duration is rendered longer and thereby replacement work is rendered unnecessary in a high-frequency heating device with a range hood.SOLUTION: A high-frequency heating device with a range hood includes: a chamber lighting device 4 that is provided adjacent to the outer side of a wall surface of a heating chamber 1; an LED lighting device 5 that is provided in the lower part of a device body and lights a heating/cooking device; and a control means 12 that controls a magnetron 3, the chamber lighting device 4, and an LED lighting device 5. The LED lighting device 5 uses a light emitting diode element. Further, the LED lighting device 5 is power-supplied from a switching power source 13 controlled by the control means 12. The light of the LED lighting device 5 is condensed by a reflecting plate 20 with a plated surface such that illuminance thereof is enhanced. The cooling effect for the LED element is enhanced by an air ventilation hole provided between the LED element and the reflecting plane such that life duration of the LED lighting device 5 is rendered longer thereby capable of being used semipermanently, and thus replacement work thereof is rendered unnecessary and usability thereof is significantly improved.

Description

  The present invention is a high-frequency heating apparatus having a hood fan function for discharging generated gas generated from another cooking apparatus installed below the apparatus main body to the indoor circulation or outdoors, and cooked food of the cooking apparatus installed below It is related with the high frequency heating apparatus with a range hood which has an illuminating device which illuminates.

  2. Description of the Related Art Conventionally, an illumination device for a high-frequency heating device with a range hood includes a downward illumination lamp provided at the lower portion of the main body and a heating room illumination lamp (inside light) provided within the main body (for example, a patent) Reference 1).

  The downward illumination lamp has a cooking device such as a gas stove installed below the high-frequency heating device main body, and a function of illuminating the food being cooked by this cooking device, as well as a function of a kitchen illumination lamp as indirect illumination, Requested by customers (users). Therefore, the lamp as the lower lighting device is required to have illuminance as a lighting fixture in order to determine the quality of the food cooked on the lower gas stove.

  In addition, the lamp as the lower illumination device of the high-frequency heating device with a range hood is installed on the bottom surface of the main body, and the influence of the temperature due to the high temperature generated gas from the gas cooking and electric cooking equipment installed under the main body It has an easy to receive arrangement structure. Furthermore, the high insulation performance corresponding to a high temperature, high humidity environment is calculated | required with the voltage value of the household commercial power source supplied to the illuminating device.

JP 2003-28431 A

  However, on the other hand, in recent years, cooking devices using gas and electricity installed under the main body of the high-frequency heating device have been improved in function from the mainstream four-point stove to the five-point stove. As a lower illumination device, an improvement in illumination function is also required so that a wide area can be illuminated. And as the means, the downward illumination lamp is diversified from the incandescent bulb to the halogen bulb, and the power consumption is from 20 W to 40 W with the improvement in performance.

  As the output of the lower illumination device provided below the main body is increased in this way, the shape of the lamp and the amount of heat generation are increased, and the insulation structure is required to have high performance and is becoming more complicated.

  On the other hand, specifications such as incandescent bulbs, halogens, etc., mounting shapes, wattage, etc., varied depending on the manufacturer. For this reason, when the downward illumination lamp is broken, there is a problem that it is not easy for the customer to find an appropriate replacement product in the market with a lamp having the same pitch and shape of the mounting pins.

  Furthermore, when combining LED elements placed on a printed circuit board with a reflector plated with a conductive material that is mounted for light collection, there is a risk of electrical shorting due to contact between the soldered portion of the LED elements and the reflector. There is a problem that it is necessary to widen the gap between the plates, and the light collection efficiency decreases due to the gap.

  The present invention solves the above-mentioned conventional problems, realizes a compact lighting device, a simple insulation configuration, prolongs the service life, and eliminates the need for replacement work. An object is to provide a heating device.

  In order to solve the above-mentioned conventional problems, a high-frequency heating apparatus with a range hood according to the present invention is a high-frequency heating apparatus with a range hood provided above a cooking device for cooking an object to be heated. A heating chamber for storing heated objects, high-frequency generating means for supplying high-frequency power into the heating chamber, an interior lighting device provided adjacent to the outside of the wall surface of the heating chamber, and a lower portion of the apparatus body A lower illuminating device that illuminates the cooking device; and a control unit that controls the high-frequency generating means, the interior illuminating device, and the lower illuminating device, wherein the lower illuminating device is an LED illumination using a light emitting diode. A low voltage power supply lower than the commercial power supply is supplied from the switching power supply controlled by the control means, and the LED element of the LED lighting is directly on the printed circuit board or an aluminum plate. Mounted on the heat radiation plate has a configuration that defines the condensing irradiation direction by the reflecting plate plated on the surface.

  When combining the LED elements arranged on this printed circuit board with a reflector, in order to efficiently collect the irradiated light, as a method of bringing the gap between the reflector and the LED element as close as possible, a reflector made of a resin molded product is usually used. By having the shape of the foot and positioning pin on the board mounting part, the hole on the printed circuit board and the positioning hole of the LED element can be processed in the same process of the same component, realizing a highly accurate positioning configuration and increasing the brightness of the light source It can be used efficiently for lighting and can be used semi-permanently, eliminating the need for replacement work and greatly improving usability.

  The high-frequency heating device with a range hood of the present invention enables optimization of the fitting dimensions when combining the LED element and the reflecting plate, draws out the illuminance to the maximum, prevents the conductive part from being short-circuited, and is safe and reliable. The use of LED lighting that operates with a low-voltage power supply of about 40 V or less as the lower lighting device makes it possible to extend the lifetime of the lower lighting device and use it semipermanently. This eliminates the need for improved usability and improves the safety while simplifying the electrical insulation configuration.

Sectional drawing which shows the structure of the high frequency heating apparatus with a range hood in Embodiment 1 of this invention The figure which shows the optimal attachment structure of the LED lighting apparatus of the high frequency heating apparatus with a range hood in Embodiment 1 of this invention. (A) Schematic diagram in the case where the insulation space distance is large in the mounting configuration of the LED element and the reflector of the high-frequency heating device with a range hood having a conventional LED lighting device (b) High-frequency heating with a range hood having the conventional LED lighting device Schematic diagram in the case where the balance of the insulation space distance is not uniform in the mounting configuration of the LED element and the reflecting plate of the apparatus (c) The mounting configuration of the LED element and the reflecting plate of the high-frequency heating device with a range hood in Embodiment 1 of the present invention Schematic with optimal insulation space distance ensured

  1st invention is a high frequency heating apparatus with a range hood provided above the cooking apparatus which cooks to-be-heated material, the heating chamber which is provided in an apparatus main body and accommodates to-be-heated material, and high-frequency electric power in the said heating chamber High-frequency generating means for supplying the heating chamber, an interior lighting device provided adjacent to the outside of the wall surface of the heating chamber, and a lower lighting device for illuminating the cooked food and kitchen of the heating cooking device provided at the lower part of the device body And a control means for controlling the high-frequency generation means, the interior lighting device, and the lower lighting device, wherein the lower lighting device is LED lighting using a light emitting diode, and the switching power source controlled by the control means Power is supplied from the projector, and the reflector is plated to increase the light efficiency and collect light.

  A low voltage power supply of about 40 V or less is supplied to the LED lighting device as a lower lighting device, and the interior lighting device is an LED lighting with a small light source using a light emitting diode. It becomes possible to efficiently illuminate the food to be cooked over a wide area with the lower cooking device having a stove by providing a reflecting plate having a surface plated.

  An LED element serving as a light emission source is mounted on a printed circuit board and condenses light emitted from the LED element by a reflecting plate whose surface is plated, thereby improving the irradiation efficiency.

  Here, since the plating layer on the surface of the reflector flows electricity, when the LED element or its solder part touches the reflector, it is electrically short-circuited or opened, causing failure or damage.

  In the present invention, by increasing the positioning accuracy of individual components so that the insulation distance between the LED element and the reflection plate can be kept to a minimum, the electrical failure between the LED element and the reflection plate and the accompanying damage to the lighting device can be eliminated. A significant improvement in efficiency can be brought about.

  According to the second invention, in particular, in the reflecting plate structure of the first invention, a cooling air flow path can be secured by providing a foot shape at the joint portion with the printed circuit board, and the cooling effect of the LED element that emits high heat is enhanced. As a result, it is possible to increase the input current to the LED element that has an upper limit of the operating temperature for quality assurance. It can be stretched and the high-luminance LED illumination can be used semi-permanently, so that no replacement work is required, and usability can be significantly improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 shows a structural diagram of a high-frequency heating apparatus with a range hood according to the first embodiment of the present invention. FIG. 2 shows an attachment structure diagram of the LED lighting device of the high-frequency heating device with a range hood in the same embodiment. FIG. 3A is a schematic diagram in the case where the insulation space distance is large in the mounting configuration of the LED element and the reflector of the high-frequency heating device with a range hood having the conventional LED lighting device, and FIG. FIG. 3C is a schematic diagram when the balance of the insulation space distance is not uniform in the mounting configuration of the LED element and the reflector of the high-frequency heating device with a range hood having the illumination device, and FIG. 3C is the first embodiment of the present invention. It is the schematic where the optimal insulation space distance was ensured in the attachment structure of the LED element and reflecting plate in the high frequency heating apparatus with a range hood.

  In FIG. 1, a microwave oven 8 with a range hood (a high-frequency heating device with a range hood) is attached above a gas stove 11 (a heating cooking device). A circulating fan 10 is provided at the upper part of the microwave oven 8 with a range hood, and the generated gas generated from a gas stove 11 (heating cooking apparatus) taken from the generated gas inlet 7 opened at the lower part of the microwave oven 8 with a range hood. Is exhausted outside through an exhaust passage 9 provided on the back side of a microwave oven 8 with a range hood (a high-frequency heating device with a range hood).

  In the main body of the microwave oven 8 with a range hood, there is provided a heating chamber 1 in which a high-frequency cooked food 16 (a heated object) such as food is stored and cooked. Moreover, the inside lighting apparatus 4 which is LED lighting which illuminates the high frequency heating cooking thing 16 (to-be-heated object) in the heating chamber 1 is provided.

  Moreover, in the main body of the microwave oven 8 with a range hood, along with the heating chamber 1, a machine room 17 is provided, and a power supply device 2 and a magnetron 3 (high frequency generating means) are arranged.

  High-frequency radio waves in the 2.45 GHz band generated by the magnetron 3 propagate through the waveguide 14 and are supplied into the heating chamber 1.

  An LED illumination device 5 (downward illumination device) that illuminates the gas stove 11 (heating cooking device) is provided below the microwave oven 8 with a range hood. This LED illumination device 5 uses a light emitting diode (LED).

  A lower illumination light transmission window 18 is attached to the bottom wall surface of the microwave oven 8 with a range hood at the bottom of the LED lighting device 5, and the high-temperature and high-humidity generated gas generated from the gas stove 11 is generated in the LED lighting device 5. It prevents entry into the vicinity.

  The LED lighting device 5 is supplied with 12 VDC power from the switching power supply 13.

  In the present embodiment, the supply voltage to the LED lighting device 5 is 12V, but the present invention is not limited to this, and any low voltage power supply having a voltage value lower than about 40V may be used.

  The control means 12 is provided in the machine room 17 and performs ON / OFF control of the magnetron 3 and the LED lighting device 5 and ON / OFF control of the switching power supply 13.

  About the high frequency heating apparatus with a range hood comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  First, when cooking using the microwave oven 8 with a range hood, the high frequency heating cooking thing (to-be-heated object) 16 is accommodated in the heating chamber 1 of the microwave oven 8 with a range hood, the magnetron 3 is drive | operated, and a heating chamber is carried out. By supplying high-frequency radio waves to 1, the high-frequency heating food 16 in the heating chamber 1 is heated.

  At this time, regardless of whether the microwave oven 8 with a range hood is cooked or not, when the user cooks using the lower cooking device such as the gas stove 11, the LED lighting device 5 (lower lighting device) is turned on. The control means 12 turns on the switching power supply 13 to reduce the commercial voltage to 12 V and supplies the power to the LED lighting device 5.

  The LED illumination device 5 illuminates the cooked food on the gas stove 11, so that the user can obtain appropriate illuminance for cooking using the gas stove 11.

  And when cooking is complete | finished, the control means 12 turns off the switching power supply 13, and the LED lighting apparatus 5 turns off.

  The LED lighting device 5 is also used as indirect lighting or a kitchen lighting, and turns on the LED lighting device 5 regardless of the operation of the microwave oven 8 with a range hood or the gas stove 11.

  In addition, the brightness of the LED illumination device 5 (downward illumination device) is required to be higher than the interior illumination device 4. This is because the interior lighting device 4 illuminates the gas stove 11 below the microwave oven 8 with a range hood, while it is only necessary to know the progress of cooking of the high-frequency cooked food 16 being cooked in the heating chamber 1. The LED lighting device 5 (downward lighting device) as a device is used for illuminating a wide area of the gas stove 11 (heating cooking device) for a maximum of 5 mouths or lighting the interior of the kitchen as interior lighting. Brightness more than the internal lighting device 4 is required.

  Thus, since the LED lighting device 5 is required to have brightness as a lighting device, the amount of self-heating is also large. Further, the high-temperature and high-humidity generated gas generated from the gas stove 11 often operates in a high ambient temperature. The LED lighting device 5 has a characteristic that its life is shortened if it continues to operate in a high temperature state.

  Therefore, in this Embodiment, in order to irradiate the light which the LED illumination apparatus 5 (downward illumination apparatus) emits to a downward cooking efficiently, it has the reflecting plate 20 which gave the plating process 19 to the surface, and is the minimum necessary The power consumption is reduced.

  In FIG. 2, the effect produced by the spatial structure 22 of the portion in contact with the positioning pin 6 and the printed board 24 provided in the reflection plate 20 will be described.

  The reflecting plate 20 needs to be as close as possible to the LED element 25 in order to increase the light collection efficiency of the irradiation light 23 by the LED element 25. Since the irradiation light 23 of the LED elements 25 arranged on the printed circuit board 24 has a straight traveling property, the condensing efficiency of the reflecting plate 20 decreases if the insulating space 22 is large.

  On the other hand, the reflecting plate 20 has a cylindrical shape in consideration of the light collection efficiency, but the mounting positioning accuracy is difficult to be obtained. However, the positioning pin 6 is arranged on the reflecting plate 20 side, and the determination hole 27 of the printed circuit board 24 is provided. Thus, the position system of the reflector 20 can be enhanced.

  Further, the positioning pin 6 can be secured at a sufficient insulation distance 22 from the LED element 25 by being positioned away from the cylindrical LED element 25.

  In addition, the positioning pin 6 can sufficiently secure the positional accuracy of the reflecting plate 20 at three locations, and the portion in contact with the printed board 24 other than the periphery of the positioning pin 6 has an insulating space 22. A cooling air passage for cooling the LED element 25 to be heated at a high temperature can be provided.

  In FIG. 3, a comparison between the spatial structure of the portion in contact with the positioning pin 6 and the printed board 24 provided on the reflection plate 20 and the conventional structure will be described.

  In FIG. 3A, in the conventional structure, the insulation distance 22 is large in order to avoid contact between the LED element 25 and the reflection plate 20, the irradiation light 23 from the LED element 25 travels straight, and the light collection efficiency of the reflection plate 20 decreases. Indicates to do.

  FIG. 3B shows a situation in which the distance between the LED element 25 and the reflecting plate 20 is not balanced in the conventional structure, causing contact and causing an electrical failure.

  In FIG.3 (c), in this Embodiment, the positioning accuracy of LED element 25 and the reflecting plate 20 is high, the balance of the distance of a perimeter can be ensured, and the condensing efficiency of the reflecting plate 20 can be taken by taking the minimum distance. As a result, it becomes possible to provide a semipermanent lighting device with high efficiency as the LED lighting device 5 (downward lighting device).

  As described above, in the present embodiment, not only can the illumination efficiency of the LED illumination device 5 (downward illumination device) be maximized, but also a structure that prevents electrical problems can be realized. Since the service life is long and it can be used semi-permanently, the replacement work is unnecessary and the usability is remarkably improved.

  Moreover, since the lower lighting device can be operated with a low voltage power source by using the LED lighting device 5, the electrical insulation performance can be simplified and the safety can be improved with a simple structure.

  As described above, the high-frequency heating apparatus with a range hood according to the present invention can be used semipermanently because the life of the downward lighting device is extended, and thus the apparatus provided with a circulation fan that is used in the upper part of another cooker It is effective for.

1 Heating chamber 3 Magnetron (high frequency generation means)
4 Interior illumination device 5 LED illumination device (downward illumination device)
8 Microwave oven with range hood (high-frequency heating device with range hood)
11 Gas stove (heat cooking device)
12 Control means 13 Switching power supply 16 High frequency cooked food (object to be heated)
20 Reflector

Claims (2)

In a high-frequency heating apparatus with a range hood provided above a heating cooking apparatus for cooking an object to be heated, a heating chamber provided in the apparatus body for storing the object to be heated, and a high-frequency generating means for supplying high-frequency power to the heating chamber An interior lighting device provided adjacent to the outside of the wall surface of the heating chamber, a lower illumination device provided at a lower part of the device body for illuminating the cooked food or kitchen of the heating cooking device, and the high-frequency generating means And control means for controlling the interior lighting device and the lower lighting device, the lower lighting device is LED lighting using a light emitting diode, and is supplied with power from a switching power source controlled by the control means, A high-frequency heating device with a range hood equipped with a reflector that is plated to increase efficiency and collect light. The reflector is composed of a resin molded product that is mounted on a printed circuit board and plated on the surface in order to enhance the irradiation effect, collects light from the LED elements mounted on the printed circuit board, and increases the illuminance. The high-frequency heating apparatus with a range hood according to claim 1, further comprising a positioning pin, the printed circuit board having a predetermined hole, and securing an insulating space distance between the reflector and the LED element and the periphery.

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