JP6240894B2 - Electric warmer controller - Google Patents

Description

  The present invention relates to a temperature detection sensor of a controller of an electric warmer.

  Conventionally, a controller of this type of electric warming tool is provided with a room temperature sensor for detecting a room temperature in order to control energization to the heater. The controller includes a control chamber and a storage chamber, and a storage chamber separated from the storage chamber and provided with a vent hole communicating with the outside air, the room temperature sensor is installed in the separate chamber, and a connection line is connected to the control board. By using a configuration connected via the control board, it is possible to suppress the heat generation of the control board from affecting the temperature detection of the room temperature sensor and accurately detect the room temperature (see, for example, Patent Document 1).

  FIG. 9 is a partial cross-sectional perspective view in which a part of a controller of a conventional electric warming tool described in Patent Document 1 is cut out, and FIG. 10 is a cross-sectional view of the controller.

  As shown in the figure, a controller 2 is installed at a corner of the main body 1 of the electric warming tool, and a storage chamber 3 and a compartment 4 are provided inside the controller 2. A control board 5 is installed in the storage chamber 3, a room temperature sensor 6 is installed in the compartment 4, and the control board 5 and the room temperature sensor 6 are connected via a connection line 7. The compartment 4 is disposed at the corner of the controller 2 that is farthest from the main body 1, and vent holes 8 are provided on the front and top surfaces.

JP-A-6-45052

  However, in the conventional configuration, since the room temperature sensor and the control board are configured as separate bodies and connected via a connection line, the room temperature sensor may be inadvertently disconnected and cause a failure. It is done. Moreover, since it manufactures as a separate body, a lot of labor is required for manufacturing, leading to an increase in cost.

  In addition, since the vents provided in the compartments have a structure in which the front and top surfaces are open, there is a high possibility that dust and water will enter the compartments through the vents and the vents will be blocked. This is a configuration in which the sensor may be damaged or an error may occur in temperature detection, and there is room for improvement in terms of temperature detection reliability and manufacturing cost.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a controller for an electric warmer that is low in cost and high in reliability by installing a temperature sensor with a simple configuration.

In order to solve the above-described conventional problems, the controller of the electric warming device of the present invention includes a substantially box-shaped upper case having an opening on the lower surface, a substantially box-shaped lower case having an opening on the upper surface, and an upper case A control board interposed between the upper case and the lower case, and a temperature detection sensor installed in the vicinity of the outer periphery of the control board. Inside the upper case, a partition wall forming an isolation area is connected to the peripheral wall. In the lower case, a partition wall that forms an isolation area is provided continuously to the peripheral wall, and the peripheral wall corresponding to the isolation area of the lower case communicates with the inner side and the outer side of the lower case. In the state where the upper case, the control board, and the lower case are stacked and combined, the upper case isolation area and the lower case isolation area are isolated from other internal spaces in the case. Forms an integrated isolation space and part of the control board Degree detection sensor is characterized in that it is accommodated in the isolated space.

  As a result, since the temperature detection sensor is housed in an isolated space having a vent hole communicating with the outside, it is possible to accurately detect the room temperature without being affected by the heat generated by the control board installed inside the controller. It becomes possible, and detection accuracy and reliability can be improved. In addition, since the temperature detection sensor is integrally installed on the control board, it is possible to suppress inadvertent damage and be manufactured at a low cost.

  The controller of the electric warming tool of the present invention can accurately perform room temperature detection, and can improve detection accuracy and reliability.

The perspective view which shows the external appearance of the electric heating tool in Embodiment 1 of this invention The perspective view which shows the external appearance of the controller in Embodiment 1 of this invention Top view of the lower case of the controller Bottom view of the upper case of the controller Bottom view with control board attached to the upper case of the controller 2 is a cross-sectional view of the controller indicated by CC in FIG. 6 is a longitudinal sectional view showing details of room temperature detection of the controller indicated by D in FIG. FIG. 7 is a cross-sectional view showing details of the room temperature detector of the controller indicated by EE Partial sectional perspective view of a controller of a conventional electric warmer Sectional view of a controller for a conventional electric warmer

  The first invention includes a substantially box-shaped upper case having an opening on the lower surface, a substantially box-shaped lower case having an opening on the upper surface, and a control interposed between the upper case and the lower case. Including a substrate and a temperature detection sensor installed in the vicinity of the outer periphery of the control substrate, and in the upper case, a partition wall that forms an isolation area is continuously provided on the peripheral wall, and in the lower case The partition wall forming the isolation area is continuously provided on the peripheral wall, and the peripheral wall corresponding to the isolation area of the lower case is provided with a vent hole communicating the inner side and the outer side of the lower case, In the state where the upper case, the control board, and the lower case are stacked and combined, the isolation area of the upper case and the isolation area of the lower case are isolated from other internal spaces in the case. Forming an integrated isolation space, Wherein the temperature sensor and a portion of the substrate is accommodated inside the isolated space, a controller of the electric Todan tool.

  As a result, since the temperature detection sensor is housed in an isolated space having a vent hole communicating with the outside, it is possible to accurately detect the room temperature without being affected by the heat generated by the control board installed inside the controller. It becomes possible, and detection accuracy and reliability can be improved. In addition, since the temperature detection sensor is integrally installed on the control board, it is possible to suppress inadvertent damage and be manufactured at a low cost.

  According to a second aspect of the invention, in the first aspect of the invention, the vent hole is provided near the lower end of the peripheral wall.

  Thereby, since it can prevent that water approachs from a vent hole, the misdetection and damage of a temperature detection sensor can be suppressed, and reliability can be improved more.

  According to a third aspect of the invention, particularly in the first or second aspect of the invention, a restraining piece is provided in the lower case at a position facing the vent hole, and from the outside of the vent hole to the isolation space, It is characterized by being unable to go straight ahead and enter.

  Thereby, since it can suppress more reliably that dust and water penetrate | invade into the compartment space where the temperature detection sensor is arrange | positioned, damage to a room temperature sensor can be suppressed and an error arises in temperature detection. This can be suppressed.

  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 is a perspective view showing an external appearance of the electric warming tool according to Embodiment 1 of the present invention. FIG. 2 is a perspective view showing an appearance of a controller of the electric warming tool.

<1> Configuration of Electric Heater As shown in FIG. 1, the electric warmer 100 has a controller 200 disposed at a corner of a substantially rectangular main body 110 formed of a plurality of sheet-like members. A power cord 201 for supplying power to the electric warming tool 100 is connected to the surface. It is a warming tool that is used by being installed on a floor surface of a house by heating the main body 110 by supplying power with a power cord 201 connected to the controller 200.

  The main body 110 of the electric warming tool 100 is composed of a laminate in which sheet-like constituent members such as a surface material 111, a heater unit (not shown), a heat insulating sheet (not shown), and a back material (not shown) are laminated. Has been.

  The heater unit is a heat source of the electric heating device 100, and a heater wire (not shown) is arranged in a meandering shape on one side of a soaking sheet (not shown) whose main component is aluminum, and is fixedly bonded. Is.

  The soaking sheet is a member for the purpose of uniformly diffusing the heat generated by the heater wire over the entire surface of the main body 110, and is an aluminum having a thickness of about 0.01 mm whose main component is aluminum which is a metal sheet having high thermal conductivity. It is a sheet.

  The heater wire is spirally wound with a temperature detection wire (not shown) for detecting the temperature around a central glass fiber (not shown), and an insulating layer (not shown) is formed of nylon resin on the outer periphery. Then, a heating wire (not shown) is spirally wound on the outer periphery of the insulating layer, a PVC insulating layer (not shown) is formed on the outer periphery, and an adhesive layer (not shown) made of polyethylene resin is formed on the outer periphery of the insulating layer. Z).

  As shown in FIG. 1, the heater unit is arranged so that the heating range is divided into two areas, area A and area B, and heats approximately half the area of the main body 110. Two areas can be selected, and the controller 200 can selectively operate heating of both areas and heating of only one of the areas.

  A heating line and a temperature detection line of the heater unit are connected to the controller 200 installed at the corner of the main body 110. Electric power is supplied from the controller 200 to the heating line, and a change in resistance of the temperature detection line is detected by the controller. Thus, the temperature change of the main body 110 can be detected.

<2> Controller Configuration FIG. 2 is a perspective view showing the appearance of the controller, FIG. 3 is a top view of the lower case of the controller, and FIG. 4 is a bottom view of the upper case of the controller. 5 is a bottom view of the controller with the control board attached to the upper case, FIG. 6 is a cross-sectional view of the controller indicated by CC in FIG. 2, and FIG. FIG. 8 shows a detailed cross-sectional view of the room temperature detector of the controller shown in FIG. 8, and FIG. 8 shows a detailed cross-sectional view of the temperature detector shown by EE in FIG.

  The controller 200 includes a substantially box-shaped upper case 210 formed of a resin material, a substantially box-shaped lower case 220 that opposes the upper case 210, and a built-in control that is interposed between the upper case 210 and the lower case 220. The upper case 210 is provided with a plurality of operation knobs, operation buttons, and indicator lamps for operating the controller 200.

  As shown in FIG. 2, a power operation knob 241 for operating the power on / off of the electric warming tool 100 by sliding in the lateral direction at the corner between the front surface and the upper surface of the controller 200, and the temperature A temperature setting knob 242 for setting is provided. By sliding the power operation knob 241 and the temperature setting knob 242 in the horizontal direction, a power switch (not shown) and a slide resistance (not shown) installed on the control board 230 built in the controller 200 are operated. It is the composition to do.

  In the present embodiment, as shown in FIG. 2, the side on which the power operation knob 241 and the temperature setting knob 242 are arranged is the front, the opposite direction is the rear, the right side is the front, the right side is the right side, and the rear. The arrangement of each component will be described with the left side as the left side.

  Further, on the upper surface of the controller 200, an area switching button 243 for selecting and switching the heating area of the main body 110, a cut timer button 244 for setting a cut timer, and the temperature of the main body 110 are set lower than the set temperature. An energy saving button 245 for saving energy by controlling and an energy saving button 246 for setting an energy saving function for automatically changing the set temperature according to a change in room temperature are installed.

  When these buttons are pressed from above, a push-type switch (not shown) installed on the control board 230 built in the controller 200 is driven to perform a switching operation.

  Two area indicator lamps 251 for displaying the heating area in the vicinity of the area switching button 243, two timer indicator lamps 252 for displaying the set time of the off timer in the vicinity of the off timer button 244, and the energy saving button 246 An energy saving indicator lamp 253 is installed in the vicinity of.

  The control board 230 built in the controller 200 is provided with a plurality of switches operated by operation knobs and operation buttons, an indicator lamp composed of LEDs, and a plurality of circuit components forming a control function. In particular, a temperature detection sensor 231 including a thermistor that detects the room temperature is installed near the front end of the control board 230.

  In the present embodiment, as shown in FIG. 2, the upper surface side where the operation knob and operation buttons are arranged is the upper side, the side where the power operation knob 241 and the temperature setting knob 242 are arranged is the front side, and the opposite direction is the rear side. The arrangement of each component will be described with the right side from the front to the rear as the right side and the left side from the rear as the left side.

As shown in FIG. 3, the lower case 220 has a substantially box-like shape with an open top surface, and a substantially rectangular bottom surface 221 and a peripheral wall 222 formed along the outer periphery of the bottom surface 221 are integrally molded with a resin material. It is a thing.

  A substantially U-shaped partition wall 223 formed by a rib standing from the bottom surface 221 is installed on the front left side of the lower case 220, and both end portions of the partition wall 223 are formed to be connected to the front peripheral wall 222. In the lower case 220, an isolation area 224 defined by a peripheral wall 222 and a partition wall 223 is formed.

  As shown in FIGS. 2 and 3, a vent hole 225 that communicates the outside of the peripheral wall 222 and the isolation area 224 is formed below the front surface of the peripheral wall 222.

  As shown in FIGS. 7 and 8, the vent hole 225 has a plurality of vertically-shaped vent holes 225 that are spaced from each other in the vicinity of the lower end of the peripheral wall 222 and the front end of the bottom surface 221 (five in this embodiment). ) Is provided.

  Inside the vent hole 225, a restraining piece 226 that restrains the straight movement of air and water entering from the vent hole 225 is formed.

  The restraining piece 226 is disposed in a substantially horizontal direction on the inner upper part of the vent hole 225 and is formed in a substantially rectangular shape having a width substantially the same as the width of the vent hole 225, and passes through so as to correspond to all the vent holes 225. The same number of pores 225 is provided. A ventilation opening 227 is formed between the adjacent restraining pieces 226, and the isolation area 224 communicates with the outside through the ventilation hole 225 and the ventilation opening 227.

  As shown in FIG. 4, the upper case 210 has a substantially box-like shape with an opening on the lower surface, and a substantially rectangular top surface 211 and a peripheral wall 212 formed along the outer periphery of the top surface 211 are integrated with a resin material. It is molded into

  A substantially U-shaped partition wall 213 formed by ribs hanging from the top surface 211 is installed on the front left side of the upper case 210, and both ends of the partition wall 213 are formed to be connected to the front peripheral wall 212. In the upper case 210, an isolation area 214 defined by a peripheral wall 212 and a partition wall 213 is formed.

  FIG. 5 shows a state in which the control board 230 is installed on the upper case 210, and the control board 230 is arranged so that the vicinity of the front left end covers a part of the isolation area 214.

  As shown in FIG. 6, in a state where the lower case 220 is combined with the upper case 210 on which the control board 230 is installed, the control board 230 is installed in a state of being interposed between the upper case 210 and the lower case 220. The

  As shown in FIGS. 7 and 8, the partition wall 223 of the lower case 220 and the partition wall 223 of the upper case 210 are installed so as to overlap each other, and the isolation area 214 of the upper case 210 and the isolation area 224 of the lower case 220 are The communication space is established, and an integrated isolation space 260 is formed.

  The isolation space 260 is a space that is isolated from the other internal space 270 of the controller 200 by the partition wall 213 of the upper case 210 and the partition wall 223 of the lower case 220, and blocks heat generated inside the controller 200. The isolation space 260 is configured to communicate with the outside through a vent hole 225 and a vent opening 227 formed in the lower case 220.

Inside the isolation space 260, a temperature detection sensor 231 made of a thermistor installed on the upper surface near the outer periphery of the control board 230 is arranged. The temperature detection sensor 231 is configured to be able to accurately detect the temperature outside the controller 200 through the vent hole 225 and the vent opening 227 without being affected by the heat generation inside the controller 200.

<3> Operation and Action of Electric Heating Tool By connecting the power cord 201 to a power outlet and sliding the power knob 241 to the left, energization of the heater of the main body 110 is started, and the temperature at which the main body 110 is set is set. The temperature rises to The temperature of the main body 110 can be adjusted by sliding the temperature setting knob 241.

  The heater of the main body 110 is divided into two parts, and two heating areas of area A and area B are provided. Normally, both areas are heated at the same time. However, when the electric warming tool 100 is used by one person, for example, when heating in a narrow range is sufficient, when the area switching button 243 is pressed, the heating area is heated. Can be switched. When the area switching button 243 is pushed once, only the area A is heated, when pushed twice, only the area B is heated, and when pushed three times, both areas are heated again. Further, the display of the two area indicator lamps 251 is switched in accordance with the switching of the heating area.

  When it is desired to automatically stop the electric warming tool 100, the timer can be set by operating the off timer button 244. When the cut timer button is pressed once, the setting is automatically stopped after 2 hours. When the push button is pressed twice, the setting is automatically stopped after 4 hours. When the push button is pressed three times, the cut timer is not set. Further, the display of the two timer indicator lamps 252 is switched according to the setting of the off timer.

  When used by a plurality of people, it may be desired to change the set temperature for each heating area depending on the preference of the user. In such a case, the surface temperature of the selected area can be lowered by 3 ° C. from the set temperature by operating the hide button 245. Pressing the Hikame button 245 once makes the surface temperature of the area A 3 ° C lower than the set temperature, and pressing it twice makes the surface temperature of the area B 3 ° C lower than the set temperature and makes the push operation three times. Then, the surface temperature of both areas is 3 ° C. lower than the set temperature, and when the pushing operation is performed four times, the surface temperature of both areas returns to the set temperature. Further, in accordance with the operation of the hide button 245, the color of the area indicator lamp 251 corresponding to the area where the surface temperature is lowered changes from red to green.

  Also, when used in combination with an air conditioner or hot air blower, or when used at a relatively high room temperature, such as early spring or autumn, the temperature will be higher even at the same set temperature, so that a temperature equivalent to that at low temperatures can be obtained. For this, it is effective to lower the set temperature, and an energy saving effect can be obtained.

  The electric warmer in the present embodiment has an energy saving function that detects a change in room temperature and automatically adjusts the set temperature, and the energy saving function can be activated by operating the energy saving button 246. When the energy saving button 246 is pushed once, the energy saving function is activated and the energy saving indicator lamp 253 is turned on. When the energy saving button 246 is pushed twice, the energy saving function is stopped and the energy saving indicator lamp 253 is turned off.

  In the state where the energy saving function is activated, the controller 200 accurately detects the room temperature by the temperature detection sensor 231, and when the room temperature is high, the temperature is about 2 to 6 degrees lower than the temperature set by the temperature setting knob 242. Adjust as follows. Thereby, an energy saving effect of about 10% to 20% can be obtained.

  As described above, since the electric warming tool in the present embodiment has an energy saving function, an energy saving effect can be obtained when other heating appliances are used in combination or when the room temperature is relatively high.

  In addition, the temperature detection sensor installed on the control board is placed in the isolation space formed inside the controller, and the temperature detection sensor is stabilized at low cost by providing a vent hole that connects the isolation space and the outside. The room temperature can be accurately detected without being affected by the heat generated inside the controller. Thereby, an energy saving function can be made to act effectively.

  In addition, by providing the ventilation hole near the lower end of the peripheral wall of the lower case of the controller, it is possible to prevent water from entering from the ventilation hole, so that erroneous detection and damage of the temperature detection sensor can be suppressed. , Reliability can be improved.

  In addition, by providing a restraining piece inside the vent hole, it is possible to more reliably prevent water from entering, so that erroneous detection and damage of the temperature detection sensor can be further suppressed, and reliability can be further improved. Can be improved.

  As described above, the controller of the electric warmer according to the present invention can prevent water from entering from the operation opening, and therefore can be applied to applications such as controllers of electric devices other than the electric warmer.

DESCRIPTION OF SYMBOLS 100 Electric heating device 200 Controller 210 Upper case 212 Perimeter wall 213 Partition 214 Isolation area 220 Lower case 222 Perimeter wall 223 Partition 224 Isolation area 225 Vent hole 226 Stopping piece 230 Control board 231 Temperature detection sensor 260 Isolation space 270 Internal space

Claims (3)

A substantially box-like upper case with an opening on the lower surface;
A substantially box-shaped lower case with an opening on the top surface;
A control board interposed between the upper case and the lower case;
A temperature detection sensor installed near the outer periphery of the control board,
Inside the upper case, a partition wall forming an isolation area is continuously provided on the peripheral wall,
Inside the lower case, a partition wall forming an isolation area is continuously provided on the peripheral wall,
The peripheral wall corresponding to the isolation area of the lower case includes a vent hole that communicates the inside and the outside of the lower case,
In the state where the upper case, the control board, and the lower case are stacked and combined, the isolation area of the upper case and the isolation area of the lower case are other internal spaces in the case. Form an isolated, isolated space,
A part of the control board and the temperature detection sensor are accommodated in the isolation space,
Electric warmer controller. The vent hole is provided near the lower end of the peripheral wall,
The controller of the electric warming tool of Claim 1. Inside the lower case, a restraining piece is provided at a position facing the vent hole,
From the outside of the vent hole, it is not possible to go straight into the isolation space,
The controller of the electric warming tool according to claim 1 or 2.

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