JP5376020B2 - Scallop - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a handwarmer that is convenient to carry because of the reduction in the size and weight and achieves an extended warming time by improving the temperature environment of a battery. <P>SOLUTION: In the handwarmer, a heat dissipating plate 4 is thermally coupled to a heater 3 to which a current is supplied by the battery 1 embedded in a case 2. The battery 1 is a box-shaped secondary battery 1A constituted of a box-shaped rechargeable lithium-ion battery or lithium polymer battery that has both flat surfaces 1a opposed to each other. The heater 3 is a heating element that is opposed to the flat surface 1a of the battery 1. A shielding plate 5 is provided between the heating element and the flat surface 1a of the battery 1. The heat dissipating plate 4 thermally coupled to the heating element stored in a dent part is provided on a surface of the case 2. In the handwarmer, the flat surface 1a of the box-shaped secondary battery 1A, the shielding plate 5, the heating element, and the heat dissipating plate 4 are arranged in a stack structure, and the heat dissipating plate 4 is heated by the heating element. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to a hood that heats a heater with a battery.

  A hood with a built-in battery and heating a heater with this battery has been developed and is described in Patent Document 1. FIG. 1 shows a firearm described in Patent Document 1. As shown in FIG. This pocket furnace includes a rechargeable battery 91, a heater circuit 94 having a heater 93 that generates heat when energized by the battery 91, and a case 92 that houses the heater circuit 94. In this pocket furnace, cylindrical batteries 91 are arranged in parallel and housed in a case 92, and a heater 93 built in the case 92 is energized to generate heat.

JP-A-11-70137

  The furnace of Patent Document 1 cannot be used to heat the heater for a long time by effectively using the battery, and if a large number of batteries are built in so that it can be used for a long time, the whole becomes larger and heavier and can be used conveniently. There is a disadvantage that cannot be done. It is important that the squirrel is light and small for convenient portability and can be used for a long time while maintaining a predetermined calorific value. Since a battery powered by a battery supplies electric power from the battery to the heater, it is important to use the battery efficiently in order to realize this. Japanese Patent Laid-Open No. 2003-260620 has a plurality of cylindrical batteries built in a case, and a heater is also built in the case. In this structure, the heater is heated from the inside of the case with a heater, so the battery is also heated. In particular, in this structure, the temperature inside the case is higher than the surface temperature of the case. Since the surface temperature of the case is such that the hands can be warmed up in the cold winter, the temperature inside the case becomes considerably high. Unfortunately, nickel-hydrogen batteries and nickel-cadmium batteries, which are cylindrical batteries built in the case, have the property that an increase in temperature reduces the electrical characteristics of the battery. For this reason, the bonfire of patent document 1 has the fault that a heater reduces the characteristic of a battery and cannot heat a heater efficiently.

  In addition, since the scallop is used in the cold season, it may be stored in a low temperature environment before use. Batteries not only have high temperatures but also have low electrical characteristics at low temperatures. When using a squirrel stored in a low temperature environment, if the temperature of the battery is low, the capacity that can be substantially discharged is significantly reduced, and the heater cannot be efficiently heated. This drawback can be prevented by heating the battery with a heater. However, in the hood of Patent Document 1, the battery heats the heater, the heater heats the air in the case, and the battery is heated via this air. Therefore, it takes time for the battery temperature to rise. For this reason, when the temperature which preserve | saves a flash oven is very low, there exists a fault which is discharged before a battery is heated and cannot be used.

  As described above, the hood of Patent Document 1 has a poor battery temperature environment and cannot efficiently discharge the battery. For this reason, there is a drawback that the heating time of the heater is shortened in various usage environments.

The present invention has been developed for the purpose of solving this drawback. An important object of the present invention is to provide a hood that can improve the temperature environment of the battery and extend the heating time considerably.
In addition, another important object of the present invention is to provide a squirrel furnace that is small and lightweight and convenient to carry by efficiently using a battery.

In order to achieve the above-mentioned object, the present invention has the following configuration.
The bonfire includes a battery 1, a case 2 containing the battery 1, a heater 3 that is energized and heated by the battery 1 built in the case 2, and a heat dissipation plate 4 that is thermally coupled to the heater 3. Is provided. The battery 1 is a prismatic secondary battery 1A composed of a prismatic lithium ion secondary battery or a lithium polymer battery having opposing flat surfaces 1a. The heater 3 is a heating element. The heating element is disposed to face the flat surface 1 a of the battery 1. A shielding plate 5 is disposed between the heating element and the flat surface 1 a of the battery 1. Furthermore, the case 2 has a heat radiating plate 4 made of a metal plate that is heated by being thermally coupled to the heating element on the surface. In the pocket heater, the flat surface 1a of the square secondary battery 1A, the shielding plate 5, the heating element, and the heat dissipation plate 4 are arranged in a laminated structure, and the heat dissipation plate 4 on the surface of the case 2 is heated by the heating element.

In the flash furnace of the present invention, the heating element can be made flat. Furthermore, in the pocket heater of the present invention, a planar heating element can be arranged in parallel with the flat surface 1 a of the battery 1.
However, in this specification, disposing the planar heating element and the flat surface in a parallel posture includes a state in which the planar heating element and the flat surface are disposed in a slightly inclined posture. Use in meaning.
Furthermore, in the flash furnace of the present invention, the heating element can be a planar PTC heater.

  In the squirrel of the present invention, the case 2 is composed of a plastic first case 2A and a second case 2B containing a square secondary battery 1A, and the second case 2B integrally forms the shielding plate 5. Thus, the heat radiation plate 4 can be fixed to the surface. Further, in the flash furnace, the square secondary battery 1 </ b> A can be disposed between the first case 2 </ b> A and the shielding plate 5, and the heating element can be disposed between the shielding plate 5 and the heat radiating plate 4.

  The firearm of the present invention includes a control circuit 6 that controls the power supplied from the prismatic secondary battery 1A to the heating element, and a temperature sensor 10 that detects the temperature of the heat radiating plate 4, and the control circuit 6 controls the supplied power. Thus, the temperature of the heat radiating plate 4 can be controlled.

  In the flash furnace of the present invention, the control circuit 6 can control the initial set temperature of the heat radiating plate 4 to be higher than the normal set temperature.

  In the squirrel furnace of the present invention, the control circuit 6 includes a switching element 11 connected between the battery 1 and the heating element, and a control unit 12 that controls the switching element 11, and the control unit 12 includes the switching element 11. The temperature of the heat radiating plate 4 can be controlled by controlling the duty for switching on and off at a predetermined cycle.

  According to the present invention, an outside air temperature sensor 16 is disposed on the opposite side of the heating element, and the power supply can be turned off by determining the unused state of the furnace based on the temperature detected by the outside air temperature sensor 16.

  The pocket furnace of the present invention can incorporate a vibrator 17 driven by the battery 1 in the case 2.

  The squirrel of the present invention incorporates a plurality of heating elements having different set temperatures, and can control the temperature of the heat radiation plate 4 by switching the heating elements to be energized.

  In the flash furnace of the present invention, the heating element and the heat radiating plate 4 can be provided on both surfaces of the battery 1 via the shielding plate 5.

  The firearm of the present invention includes a memory 13 in which the control circuit 6 stores a set temperature, and has a USB terminal 14 connected to the control circuit 6, and is connected to a computer via the USB terminal 14, The set temperature stored in the memory 13 can be changed.

  The flash furnace of the present invention includes a plurality of LEDs 15 provided in the case 2, and can incorporate a memory 13 in which the control circuit 6 stores the lighting state of the LEDs 15. Furthermore, the squirrel is provided with a USB terminal 14 connected to the control circuit 6 and can be connected to a computer via the USB terminal 14 to change the lighting state of the LED 15 stored in the memory 13.

  In the pocket furnace of the present invention, the surface of the heat radiating plate 4 can be covered with the elastomer 9. Furthermore, the pocket furnace of the present invention can be used together with a protection circuit of the battery 1 by connecting the planar PTC heater 3 </ b> A in series with the battery 1.

  In the squirrel furnace of the present invention, the control circuit 6 includes a temperature sensor 18 that detects the temperature of the battery 1, and the heating element can preheat the battery 1 in a state where the battery temperature is lower than the set temperature.

  In the present invention, the battery 1 can be a lithium polymer battery, and the heat dissipation plate 4 and the case 2 can be deformed.

  The rechargeable furnace of the present invention can incorporate the charging circuits 25 and 35 of the battery 1 in the case 2. Furthermore, in the squirrel furnace of the present invention, the charging circuit 35 can include a contactless charging circuit 25. Further, the squirrel of the present invention can charge the battery 1 from the USB terminal 14 by connecting the charging circuit 25 to the USB terminal 14. Furthermore, the squirrel of the present invention can be provided with an AC plug 31 connected to the charging circuit 25 in the case 2, and the battery 1 can be charged by connecting the AC plug 31 to an outlet.

  Furthermore, the flash furnace of the present invention can provide innumerable irregularities 4 a on the surface of the heat radiating plate 4.

  The pocket furnace of the present invention can be provided with a flat surface portion 84 </ b> A on the inner surface of the heat radiating plate 84, and the flat surface portion 84 </ b> A can be thermally coupled to the heater 3.

  According to the present invention, a metal plate 88 energizing the heater 3 is disposed between the heat radiating plate 84 and the heater 3, and the metal plate 88 can be brought into surface contact with the heat radiating plate 84 and thermally coupled. . The metal plate 88 can be electrically connected to the heater 3 through the protrusion 88a.

The bonfire of the present invention can incorporate a security buzzer 80 for supplying electric power from the battery 1 energized to the heater 3. Further, the flash furnace of the present invention detects the remaining capacity or voltage of the battery 1, and when the remaining capacity or voltage becomes smaller than a set value, the energization to the heater 3 is cut off and power is supplied only to the security buzzer 80. The control unit 12 for switching to can be incorporated.
The bonfire of the present invention is a battery 1, a case 2 containing the battery 1, a heater 3 that is energized and heated by the battery 1 contained in the case 2, and is thermally coupled to the heater 3. The battery 1 is a squirrel heater provided with a heat radiating plate 4. The battery 1 is a square secondary battery 1 </ b> A composed of a square lithium ion secondary battery or a lithium polymer battery with both opposing surfaces being flat surfaces 1 a, and the heater 3 is planar. The heating element is disposed opposite to the flat surface 1a of the battery 1, and the case 2 has a heat radiating plate 4 made of a metal plate that is heated by being thermally coupled to the heating element on the surface. The heating element heats the heat radiating plate 4 on the surface of the case 2.
The flash furnace of the present invention is further provided with a control unit 12 that detects the remaining capacity of the battery 1, a case 2, a power switch 19 for turning on / off the power, a case 2, and the remaining amount of the battery 1. It is possible to provide an LED 15 that can be lit in different lighting patterns determined in advance according to the capacity. When the power switch 19 is turned off, the flash unit can be configured so that the control unit 12 detects the remaining capacity of the battery 1 and lights the LED 15 with a lighting pattern corresponding to the detected remaining capacity. .

  The bonfire of the present invention is characterized by improving the temperature environment of the battery and extending the heating time. The present invention uses a prismatic secondary battery which is a square lithium ion secondary battery or a lithium polymer battery having a flat surface on both sides facing the battery for heating the heater, and the heater of the present invention. A heating element is used, and the heating element is disposed opposite to the flat surface of the battery, and a shielding plate is disposed between the heating element and the flat surface of the battery, and is thermally coupled to the heating element. This is because a heat radiating plate made of a metal plate to be heated is arranged on the surface of the case. In this structure, the shield plate is disposed between the heating element and the battery, and therefore, when the heating element heats the heat dissipation plate, the battery is not directly heated. For this reason, the heating element efficiently heats the heat dissipation plate and does not heat the battery to a high temperature. Therefore, the heat radiating plate can be efficiently heated by the heating element while preventing the battery temperature failure.

  In addition, the squirting furnace of the present invention can reduce the temperature trouble due to the low temperature of the battery, and can extend the usage time even in a severe cold usage environment. When the scallop is stored in a low temperature environment, the temperature of the battery is considerably reduced. Although the capacity of the battery is substantially reduced when the temperature is lowered, the squirting furnace of the present invention uses the battery as a square secondary battery, the heater as a heating element, and between the flat surface of the prismatic battery and the heating element. A shielding plate is provided. This structure is a state where the flat surface of the battery and the heating element are laminated. In the squirrel furnace arranged in this stacked state, the heat of the heating element is conducted to the battery through the shielding plate. For this reason, when the battery is in a state of heating the heating element, the battery is quickly heated by the heating element, and a low-temperature failure of the battery is prevented. The shielding plate prevents the heat of the heating element from being directly conducted to the prismatic battery and prevents the temperature of the battery from increasing, but conducts the heat of the heating element on the flat surface of the square battery. Since the heat energy conducted by the shielding plate is not so large, the battery is not heated. However, the prismatic battery in a low temperature environment is heated by heat conduction from the shielding plate, and a low temperature failure is prevented. The heat of the heating element is thermally conducted to the square battery through the shielding plate, but the flat surface on the opposite side of the square battery is outside the case and radiated. For this reason, it is not heated to such a high temperature that the heat is conducted from the shielding plate and the temperature of the battery causes a temperature failure. However, it is heated to such an extent that a low temperature failure of the battery is prevented.

  Therefore, the squirrel of the present invention can prevent both the high temperature failure and the low temperature failure of the battery, and can efficiently heat the heating element using the battery efficiently. Furthermore, since a square secondary battery comprising a lithium ion secondary battery or a lithium polymer battery is used as the battery, the discharge capacity with respect to the volume is large, and the heating element can be efficiently heated for a long time. For this reason, the squirrel of the present invention uses a high-capacity battery efficiently and realizes a feature that is small and light weight and convenient to carry.

  According to the second aspect of the present invention, since the heating element has a flat shape, it has a feature that the heat dissipation plate can be efficiently heated by contacting the heat dissipation plate over a wide area. Furthermore, the planar heating element can make a surface contact with the flat surface of the rectangular battery over a wide area, and the heat of the planar heating element is quickly conducted to the battery via the shielding plate, so that the low temperature battery can be promptly transmitted. There is also a feature that can be heated.

According to the fourth aspect of the present invention, since the heating element is a planar PTC heater, the planar PTC heater itself can be used safely by setting the temperature. This is because when the planar PTC heater is energized and the temperature rises to the set temperature, the electrical resistance increases rapidly and substantially cuts off the current. By controlling the temperature below a preset temperature with a flat PTC heater, this furnace can make the maximum temperature lower than the preset temperature with a simple structure without using a control circuit for controlling the temperature.

  According to a fifth aspect of the present invention, the case comprises a plastic first case and a second case in which a secondary battery is incorporated, and the second case integrally forms a shielding plate and is formed on the surface. Since the heat dissipation plate is fixed, and the square secondary battery is disposed between the first case and the shielding plate, and the heating element is disposed between the shielding plate and the radiation plate, it is useless. The square battery, the shielding plate, and the heating element are arranged in a stacked state so as not to save space, and a feature that enables easy assembly while realizing further miniaturization is also realized.

  Furthermore, the squirrel of claim 6 of the present invention comprises a control circuit for controlling the power supplied from the secondary battery to the heating element, and a temperature sensor for detecting the temperature of the heat radiating plate, and the control circuit controls the supplied power. Since the temperature of the heat radiating plate is controlled, the temperature of the heating element and the heat radiating plate can be controlled by the control circuit to warm up to the optimum temperature.

  Further, according to the seventh aspect of the present invention, the control circuit controls the initial set temperature of the heat radiating plate to be higher than the normal set temperature, so that it is warm when using the freezer, and when the user is cold, the temperature is low. It has the feature that it can quickly warm hands while preventing burns.

  Further, according to claim 8 of the present invention, the control circuit includes a switching element connected between the battery and the heating element, and a control unit that controls the switching element, and the control unit includes the switching element. Since the temperature of the heat radiating plate is controlled by controlling the duty to turn on / off at a predetermined cycle, there is a feature that the temperature of the heating element and the heat radiating plate can be freely controlled.

  According to the ninth aspect of the present invention, an outside air temperature sensor is arranged on the opposite side of the heating element, and the non-use state of the furnace is determined by the temperature detected by the outside air temperature sensor, and the power is turned off. There is a feature that can prevent wasteful consumption.

  Furthermore, the squirrel of claim 10 of the present invention has a feature that it can be comfortably used by massaging with a vibrator while heating a heat radiating plate, since a vibrator driven by a battery is built in the case.

  Further, according to the eleventh aspect of the present invention, a plurality of heating elements having different set temperatures are built in, and the temperature of the heat radiating plate is controlled by switching the heating elements to be energized. It has the feature that the temperature of the plate can be changed easily.

  Furthermore, in the squirrel according to claim 12 of the present invention, since the heating element and the heat radiating plate are provided on both surfaces of the battery via the shielding plates, for example, it is sandwiched between both hands, and both hands can be heated together. There is.

  According to a thirteenth aspect of the present invention, the control circuit includes a memory for storing the set temperature, and the set temperature stored in the memory can be changed by the computer from the USB terminal connected to the control circuit. Has the feature that you can use a computer to set the temperature of the squirrel to the optimum temperature for you.

  According to a fourteenth aspect of the present invention, a plurality of LEDs are provided in a case, the LEDs are stored in a memory of a control circuit, and a computer is connected to the control circuit via a USB terminal. Since the lighting state of the stored LED can be changed, the user can emit the LED in a lighting state that the user likes.

  Furthermore, in the fifteenth aspect of the present invention, since the surface of the heat radiating plate is coated with an elastomer, the impact shock can be absorbed and the drop resistance can be improved while preventing low temperature burns with the elastomer.

  In addition, since the flat PTC heater is connected in series with the battery and used together with the battery protection circuit, the short-circuit current of the battery flows through the flat PTC heater. Can be prevented.

  Further, according to a seventeenth aspect of the present invention, the control circuit includes a temperature sensor for detecting the temperature of the battery, and the heating element preheats the battery when the battery temperature is lower than the set temperature. The battery can be prevented from being damaged at low temperatures when stored in the battery.

  Further, according to claim 18 of the present invention, since the battery is a lithium polymer battery and the heat radiation plate and the case can be deformed, depending on the place of use, the battery can be deformed along the surface of the body for comfort. There are features that can be used.

  Furthermore, since the squirrel according to claim 19 of the present invention has a battery charging circuit built in the case, the built-in battery can be easily charged. In particular, the squirrel according to claim 20 includes a contactless charging circuit, so that the battery can be charged without connecting a connector or the like. In addition, since the squirrel of claim 21 can charge the battery from the USB terminal, the battery can be charged by connecting the squirrel to the USB terminal of the computer or the like. Further, in the squirrel according to claim 22, since the AC plug is connected to the charging circuit, the battery can be charged by connecting the AC plug to an outlet.

  Furthermore, the squirrel according to claim 23 of the present invention is provided with innumerable irregularities on the heat radiating plate, so that it is possible to prevent a low temperature failure.

  Further, according to claim 24 of the present invention, a flat portion is provided on the inner surface of the heat radiating plate, and this flat portion is thermally coupled to the heater, so that the heat of the heater can be effectively conducted to the heat radiating plate.

  Furthermore, in the stove according to claim 25 of the present invention, a metal plate for energizing the heater is disposed between the heat radiating plate and the heater, and this metal plate is brought into surface contact with the heat radiating plate and thermally coupled. There is a feature that can reduce the temperature change of the heat dissipation plate with respect to the temperature change. In particular, in this pocket furnace, the metal plate is electrically connected to the heater through a protrusion provided on the metal plate, so that the metal plate and the heater can be reliably electrically connected.

  Furthermore, the firearm of claim 26 of the present invention incorporates a security buzzer for supplying electric power from a battery energizing the heater. As described above, since the squirrel containing the security buzzer is carried by being held in a hand or in a pocket, the buzzer can be sounded quickly in an emergency on a winter night road or the like.

Further, according to claim 27 of the present invention, the remaining capacity or voltage of the battery is detected, and when it becomes smaller than the set value, the energization to the heater is cut off and power is supplied only to the security buzzer. It is possible to prevent the alarm from being cut off and to reliably operate the security buzzer.
According to claim 28 of the present invention, since the square secondary battery, the heating element as the flat heater 3 and the heat radiating plate are arranged, it is small and light in weight and is convenient to carry.
Furthermore, according to claim 29 of the present invention, the user can confirm the remaining battery capacity at that time from the lighting pattern of the LED by turning off the power switch of the furnace.

It is a perspective view which shows the internal structure of the conventional bonfire. 1 is a perspective view of a bonfire according to an embodiment of the present invention. FIG. 3 is a bottom view of the bonfire shown in FIG. 2. It is a longitudinal cross-sectional view of the bonfire shown in FIG. FIG. 3 is a transverse cross-sectional view of the bonfire shown in FIG. 2. It is the disassembled perspective view which looked at the pocket furnace shown in FIG. 2 from the bottom face. FIG. 3 is an exploded perspective view of the bonfire shown in FIG. 2. 1 is a block diagram of a bonfire according to an embodiment of the present invention. It is a longitudinal cross-sectional view of the flash furnace concerning the other Example of this invention. FIG. 10 is a cross-sectional view of the bonfire shown in FIG. 9. It is a longitudinal cross-sectional view of the flash furnace concerning the other Example of this invention. It is a side view of the flash furnace concerning the other Example of this invention. It is a side view of the flash furnace concerning the other Example of this invention. It is a graph which shows the temperature characteristic which a control circuit heats a heater. It is a graph which shows an example in which a control circuit controls a power switch with heater temperature and outside temperature. It is a longitudinal cross-sectional view of the flash furnace concerning the other Example of this invention. It is a side view of the flash furnace concerning the other Example of this invention. FIG. 6 is a circuit diagram of a bonfire according to another embodiment of the present invention. It is a side view which shows the state which charges the bonfire shown in FIG. 18 with a charging stand. It is the disassembled perspective view which looked at the pocket furnace concerning the other Example of this invention from the bottom face. It is a partially expanded longitudinal cross-sectional view of the pocket furnace shown in FIG. FIG. 21 is a block diagram of the bonfire shown in FIG. 20.

  Embodiments of the present invention will be described below with reference to the drawings. However, the following examples illustrate a furnace for embodying the technical idea of the present invention, and the present invention does not specify the furnace as follows.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  2 to 8 includes a battery 1, a case 2 containing the battery 1, a heater 3 as a heating element that is heated by energizing the battery 1 built in the case 2, A heat radiating plate 4 thermally coupled to the heater 3 and a control circuit 6 for controlling the power supplied to the heater 3 are provided. The heater 3 is a planar PTC heater 3A. As the heating element, in addition to the planar PTC heater 3A, a heating element using a transistor, a resistor, and the like can be used.

The battery 1 is a prismatic secondary battery 1A composed of a prismatic lithium ion secondary battery or a lithium polymer battery having opposing flat surfaces 1a. In the rectangular secondary battery 1A, an electrode and an electrolytic solution are put in an outer can formed by pressing aluminum or an aluminum alloy into a square shape and sealed. In this square secondary battery 1A, electrodes are in close contact with the inner surface of the flat surface 1a of the outer can. For this reason, in the low temperature state of winter, the electrode can be heated to a predetermined temperature via the flat surface 1a of the outer can, so that the electrical characteristics at a low temperature can be quickly improved. The square secondary battery 1A is a lithium ion secondary battery having a voltage of 3.7 V and a capacity of 2000 mAh. In this battery 1, the heat radiating plate 4 is heated to 42 ° C. to 46 ° C. with a planar PTC heater 3A, and about 8 to 1 is used.
Can be used for 0 hours. However, a lithium polymer battery can also be used as the battery.

  Case 2 has an elliptical overall planar shape. The cross-sectional shape is also a thin ellipse. The case 2 is made of plastic. The case 2 includes a first case 2A made of plastic and a second case 2B in which the square secondary battery 1A is built. In the second case 2B, the shielding plate 5 is integrally formed.

  The first case 2 </ b> A is formed to a size that incorporates a square secondary battery 1 </ b> A and a circuit board 7 on which electronic components of the control circuit 6 are mounted. Further, the first case 2A is integrally formed with a connecting rib 21 into which a set screw 20 for connecting the second case 2B is screwed. The connecting ribs 21 are provided so as to be positioned at the four corners of the prismatic secondary battery 1A.

  The second case 2 </ b> B is provided with a peripheral wall 22 that fixes the heat radiating plate 4 around the shielding plate 5. The shielding plate 5 closes the opening of the first case 2A that houses the prismatic secondary battery 1A. The shielding plate 5 is formed in a plate shape along the flat surface 1a of the square secondary battery 1A. An adjustment sheet 8 for controlling heat conduction is disposed on the flat surface 1a of the shielding plate 5 and the square secondary battery 1A, and heat conduction between the planar PTC heater 3A, which is the heater 3, and the square secondary battery 1A. Can be controlled. By using a sheet having a low thermal conductivity as the adjustment sheet 8, the thermal conduction between the planar PTC heater 3A and the square secondary battery 1A can be reduced. The heat conduction between the planar PTC heater 3A and the square secondary battery 1A can be controlled by the thickness of the shielding plate 5 and the heat conductivity.

  In the second case 2 </ b> B, the heat radiating plate 4 is fixed to the lower end edge of the peripheral wall 22, and the heat radiating plate 4 is disposed on the surface of the case 2. The heat radiating plate 4 closes the opening of the peripheral wall 22 provided in the second case 2B. The opening of the peripheral wall 22 is equal to the outer shape of the heat dissipation plate 4. Further, the peripheral wall 22 is provided with a step portion 23 for fitting the outer peripheral edge portion of the heat radiating plate 4 along the lower end edge thereof. The 2nd case 2B is made into the shape which connects the upper end edge of the surrounding wall 22 to the outer periphery of 1st case 2A. A planar PTC heater 3A is disposed between the shielding plate 5 and the heat radiating plate 4 in a state where the heat radiating plate 4 is fixed to the second case 2B. With this structure, the flash unit has a structure in which the flat surface 1a of the square secondary battery 1A, the shielding plate 5, the planar PTC heater 3A, and the heat dissipation plate 4 are laminated. The square secondary battery 1 </ b> A is disposed between the bottom plate 24 and the shielding plate 5 of the first case 2 </ b> A. The planar PTC heater 3A is disposed between the shielding plate 5 and the heat radiating plate 4, and directly heats the heat radiating plate 4 to heat the square secondary battery 1A via the shielding plate 5. .

  The planar PTC heater 3A has a substantially disc shape, and is disposed on the lower surface of the shielding plate 5 of the second case 2B so as to face the flat surface 1a of the square secondary battery 1A and in parallel with the flat surface 1a. Established. The heat radiation plate 4 is fixed by being thermally coupled to the planar PTC heater 3A, and the planar PTC heater 3A heats the heat radiation plate 4. When the planar PTC heater 3A is energized and the temperature rises to a set temperature, the electrical resistance increases rapidly and the current is substantially cut off. Accordingly, the planar PTC heater 3A has a function of controlling the temperature below the set temperature by itself, and the maximum temperature can be made lower than the set temperature without using a control circuit for controlling the temperature. However, the planar PTC heater 3A can also control the temperature by controlling the current to be applied. The planar PTC heater 3A has silver-plated electrodes formed on both surfaces thereof, and power is supplied by contacting the surfaces of the planar PTC heater 3A while the metal plates 37 and 38 are pressed. Although detailed explanation is omitted, the metal plates 37 and 38 are formed by extending bent pieces so as to penetrate the shielding plate 5, and these bent pieces are electrically connected to the circuit board 7.

The illustrated furnace includes a plurality of planar PTC heaters 3A. The plurality of planar PTC heaters 3A have the same set temperature or have different set temperatures. A squirrel containing a planar PTC heater 3A having a different set temperature can control the temperature of the heat radiation plate 4 by switching the planar PTC heater 3A to be energized. For example, in a squirrel containing two planar PTC heaters 3A, the set temperature of one planar PTC heater 3A is 45 ° C., and the set temperature of another planar PTC heater 3A is 48 ° C. In this pocket heater, the flat PTC heater 3A having a set temperature of 45 ° C. is energized to heat the heat radiating plate 4 to 45 ° C. In addition, the planar PTC heater 3A at 48 ° C. is energized to heat the planar PTC heater 3A to 48 ° C. Further, both the planar PTC heaters 3A are energized to quickly raise the temperature of the heat radiating plate 4 and warm up to 48 ° C.

  The heat radiating plate 4 is made of a metal plate having excellent heat conductivity such as aluminum or copper. As shown in the partially enlarged view of FIG. 4, the heat radiating plate 4 can be provided with innumerable irregularities 4 a on the surface to prevent low temperature burns. This is because the heat radiating plate 4 having the unevenness 4a does not come into close contact with the human body in surface contact. Moreover, as shown in FIG. 9 and FIG. 10, the surface of the heat radiating plate 4 can be covered with an elastomer 9 to prevent low temperature burns. Further, as shown in FIGS. 9 and 10, the hood that covers the periphery of the case 2 with the elastomer 9 can absorb the impact caused by dropping and improve the impact resistance strength.

  Further, as shown in FIG. 11, the flash unit can also be provided with planar PTC heaters 3 </ b> A and 3 </ b> A and heat radiation plates 4 and 54 via shielding plates 5 and 55 on both sides of the square secondary battery 1 </ b> A. In the pocket furnace shown in the drawing, the first case 52A and the second case 52B constituting the case 52 are integrally formed with the shielding plates 55 and 5, and the square secondary is interposed between the pair of shielding plates 55 and 5. A battery 1A is provided. That is, the case 52 is formed by sandwiching the prismatic battery 1A from both sides by the shielding plate 55 of the first case 52A and the shielding plate 5 of the second case 52B, so that the flat surfaces 1a on both surfaces of the prismatic secondary battery 1A are sandwiched. Shielding plates 55 and 5 are provided. Further, the case 52 has heat radiation plates 54 and 4 fixed to the surfaces of the first case 52A and the second case 52B, respectively. In the illustrated furnace, the heat dissipation plate 54 is fixed to the first case 52A, and the heat dissipation plate 4 is fixed to the second case 2B, and the planar PTC is interposed between the shielding plates 55 and 5 and the heat dissipation plates 54 and 4. Heaters 3A and 3A are arranged, respectively. With this structure, the shielding plates 55, 5 and the planar PTC heaters 3A, 3A and the heat radiating plates 54, 4 are laminated on the flat surfaces 1a on both sides of the square secondary battery 1A. 54 and 4 are provided. This hood has the feature that it can be heated from both sides.

  Further, as shown in FIG. 12 and FIG. 13, the squirrel can be structured so as to be deformable as a whole. 12 is provided with a bent portion 62 on both sides of the main body portion 61 so that it can be bent via a connecting portion 63. The main body 61 and the bent portion 62 are connected via a connecting portion 63 that can rotate with respect to each other. As such a connecting portion 63, various mechanisms such as a hinge, a ball joint, a rotation shaft and a bearing can be used. In the pocket furnace shown in the drawing, the battery 1 is built in the main body 61, and the planar PTC heater 3 </ b> A serving as a heating element is disposed in the main body 61 and the bent portion 62. Further, the main body 61 and the bent portion 62 are provided with a heat radiating plate 64 made of a metal plate on the lower surface facing the built-in planar PTC heater 3A. This structure has a feature that it can be used comfortably because the folding part 62 can be bent according to the place of use and can be deformed into a shape along the part of the body that is desired to be warmed. The illustrated furnace has a structure that can be bent at two locations by dividing the whole into a main body 61 and bent portions 62 on both sides. However, although not shown, the squirrel can be divided into two parts so that it can be bent at one place.

Furthermore, the squirrel shown in FIG. 13 has a structure that can be bent and deformed as a whole. In the pocket furnace shown in this figure, the battery 1 incorporated in the case 72 is a lithium polymer battery, and the case 72 is formed of a soft member that can be deformed by bending or bending. As such a soft member, for example, soft plastic or rubber can be used. Further, a metal plate or a metal foil having a thickness that can be bent is fixed to the surface of the case 72 as the heat dissipation plate 74. This structure has a feature that it can be used comfortably by curving the entire body along the shape of the body to be warmed. In addition, the case 72 formed of a soft member has a feature that the touch feeling can be improved.

  FIG. 8 shows a circuit diagram of the bonfire. In this circuit diagram, a squirrel furnace includes a control circuit 6 that controls power supplied from a square secondary battery 1A that is a battery 1 to a planar PTC heater 3A that is a heating element, and a temperature sensor 10 that detects the temperature of the heat radiating plate 4. With. The control circuit 6 controls the power supplied to the planar PTC heater 3A to control the temperature of the planar PTC heater 3A, that is, the temperature of the heat dissipation plate 4.

  The control circuit 6 includes a switching element 11 connected between the battery 1 and the planar PTC heater 3A, and a control unit 12 including a microcomputer that controls the switching element 11 on and off. Since the flat PTC heater 3A is connected in series with the battery 1 via the switching element 11, this flat PTC heater 3A is used in combination with the protection circuit of the battery 1. For example, even when the switching element 11 is internally short-circuited or welded and held in the on state, the planar PTC heater 3A has a suddenly large electrical resistance at a set temperature, and the current is substantially cut off, thereby Because it protects.

  The control unit 12 controls the duty of switching the switching element 11 on and off at a predetermined cycle, thereby controlling the temperature of the heat dissipation plate 4. It is possible to increase the temperature of the planar PTC heater 3 </ b> A, that is, to increase the temperature of the heat radiating plate 4 by increasing the time for which the control unit 12 turns on the switching element 11. In contrast, the control unit 12 can shorten the ON time of the switching element 11 to lower the temperature of the planar PTC heater 3 </ b> A and the heat dissipation plate 4. Further, the control unit 12 can control the duty of the switching element 11 with a signal from the temperature sensor 10 that detects the temperature of the heat radiating plate 4 to set the planar PTC heater 3 </ b> A and the heat radiating plate 4 to the set temperature. .

  The control circuit 6 has a memory 13 that stores the set temperature in the controller 12. The control unit 12 controls the duty for switching the switching element 11 on and off so that the planar PTC heater 3 </ b> A has a set temperature stored in the memory 13. The control unit 12 does not necessarily need to control the temperature with the duty by switching the switching element 11 on and off at a predetermined cycle. The control unit 12 switches off the switching element 11 when the planar PTC heater 3A becomes higher than the set temperature by a signal from the temperature sensor 10, and turns on the switching element 11 when the planar PTC heater 3A becomes lower than the set temperature. The planar PTC heater 3A can be kept at a set temperature by controlling to switch to.

  The memory 13 of the control circuit 6 stores an initial set temperature and a normal set temperature. The initial set temperature is higher than the normal set temperature. As shown in FIG. 14, the control circuit 6 first heats the planar PTC heater 3A to the initial set temperature when the power switch 19 of the squirrel is turned on, and then controls the normal set temperature. The warming furnace which heats the planar PTC heater 3A and the heat radiating plate 4 with this temperature curve can quickly warm in a short time and warm when the user cools. After that, since it is set to the normal set temperature, the average current of the planar PTC heater 3A can be reduced and used for a long time.

The control circuit 6 in FIG. 8 has a USB terminal 14 connected to the control unit 12. The USB terminal 14 is provided in the case 2 as shown by a chain line in FIG. The USB terminal 14 is connected to a computer. The control circuit 6 is connected to the computer via the USB terminal 14 so that the set temperature stored in the memory 13 can be changed by a control signal input from the computer. This hood is connected to a computer and allows the user to adjust the temperature to the optimum setting.

Further, the squirrel furnace in FIG. 8 has a plurality of LEDs 15 connected to the control circuit 6. As shown in FIGS. 4 and 7, the LED 15 is fixed to the circuit board 7 built in the case 2, and the blinking state is controlled by the control circuit 6. In the illustrated furnace, the first case 2A disposed above the LED 15 is made of light-transmitting plastic. This case 2 can transmit the light emitted from the LED 15 and display it outside without providing an opening window for exposing the LED 15. However, the case can be displayed on the outside by providing an opening window so that the LED is exposed from the case. The control circuit 6 stores a lighting pattern for lighting the LED 15 in the memory 13 of the control unit 12. The lighting pattern of the LED 15 stored in the memory 13 of the control unit 12 is changed by a computer connected via the USB terminal 14. This hood can be connected to a computer to control the lighting state of the LED 15 so that the user can change the lighting pattern to the user's preference.
One or more LEDs 15 can be provided in the case 2. Further, the lighting pattern of the LED can be changed according to the remaining capacity of the battery 1. That is, the LED is turned on at a predetermined timing, and the lighting pattern at this time is set in advance to a specific remaining capacity display lighting pattern determined according to the remaining capacity of the battery, so that the user can start from the LED lighting pattern. , Can know the remaining capacity of the battery of the bonfire. The predetermined timing can be set, for example, when the power switch 19 of the hood is turned on, turned off, or pressed for a predetermined number of seconds or longer. By executing the remaining capacity display lighting pattern when the power is turned off, the user can be urged to charge when the remaining capacity is low. Obtained and preferred. Further, the power switch can be used also as an execution switch for the remaining capacity display lighting pattern, and an increase in the number of parts can be avoided.
Further, the remaining capacity display lighting pattern can be configured from the number of flashing times and time of LEDs, the lighting color of LEDs, or a combination thereof. As an example of the remaining capacity display lighting pattern, after the power switch is switched from ON to OFF, the green LED 15 is displayed by lighting or blinking for 3 seconds. For example, when the remaining capacity of the battery is 70% or more, it is lit in green for 3 seconds as charging is not required, and when it is 40% to 70%, it is slowly flashed in green as usable (for example, blinking for 3 seconds at 1 second intervals) If it is 40% or less, it needs to be charged and flashes quickly in green (for example, flashes for 3 seconds at 0.5 second intervals). Moreover, the light emission color of the LED 15 is not limited to one color, but can be a plurality of light emission colors. For example, when the remaining capacity of the battery is 70% or more, it can be lit green for 5 seconds, when it is 40% to 70%, it blinks yellow for 5 seconds, when it is 40% or less, it blinks red for 8 seconds, etc. In particular, when the remaining capacity is small, it is preferable to combine red, which has a high effect of calling attention, and blinking at short time intervals. The control of the LED remaining capacity display lighting pattern is performed by the control unit 12 that detects the remaining capacity of the battery. The remaining capacity can be obtained by measuring the voltage of the battery 1. In addition to setting the remaining capacity display lighting pattern in advance, the user may change the computer from a computer connected via the USB terminal 14 as described above. The remaining capacity display lighting pattern is recorded in the memory 13. In addition, when changing the lighting color of LED, it cannot be overemphasized that one or more LED which can be changed into a different luminescent color, or several LED from which a lighting color differs is used.

  The control circuit 6 of FIG. 8 arranges an outside air temperature sensor 16 on the opposite side of the planar PTC heater 3A as shown in FIG. 4 in order to detect a state where the squirrel is not used. In this pocket furnace, a state where the pocket heater is not used at the detected temperature which is the outside temperature detected by the outside temperature sensor 16, that is, a non-use state is determined, and the power switch 19 is turned off. Here, an opening may be provided in the first case 2A in the vicinity of the outside air temperature sensor 16, so that outside air can be introduced into the case.

  The control circuit 6 determines the non-use state based on the temperature of the planar PTC heater 3A and the signal of the outside air temperature sensor 16, and switches the power switch 19 to OFF. FIG. 15 shows the area where the power switch 19 is turned off by hatching. When the temperature of the planar PTC heater 3A and the outside air temperature are in the hatched region in this figure, the control circuit 6 switches the power switch 19 off. This hatched area is a state in which the temperature of the planar PTC heater 3A is higher than the outside air temperature, in other words, a state in which the temperature detected by the outside air temperature sensor 16 is low, that is, a state where the hood is not inside the clothing. Is determined. Since the power switch 19 is automatically turned off when this squirting furnace is not used, useless consumption of the battery 1 can be eliminated.

  13 includes a vibrator 17 driven by the battery 1 in the case 2. This scallop is characterized by being able to massage the human body while heating the heat radiating plate 4. Moreover, even if it is in the state which is not heated with the thermal radiation plate 4, a human body can also be massaged. Furthermore, during operation of the furnace, the control unit 12 can confirm that the furnace is in operation by vibrating the vibrator 17 periodically (once every 10 minutes to 1 hour for about 10 seconds). .

  4 has a shielding plate 5 disposed along the flat surface 1a of the battery 1, and further a planar PTC heater 3A is disposed in parallel on the lower surface of the shielding plate 5. As shown in FIG. That is, the flat surface 1a of the battery 1, the shielding plate 5, and the planar PTC heater 3A are stacked in a parallel posture. The hood having this structure can conduct the heat of the planar PTC heater 3 </ b> A to the battery 1 through the shielding plate 5. Since the heat of the planar PTC heater 3A is not directly conducted to the battery 1, the battery 1 is not heated by the planar PTC heater 3A. However, part of the heat generated by the planar PTC heater 3 </ b> A is indirectly conducted to the battery 1 through the shielding plate 5. This warm furnace can preheat the battery 1 by energizing the planar PTC heater 3A in an extremely low temperature environment. As shown in FIG. 8, in this pocket furnace, a temperature sensor 18 that detects the temperature of the battery 1 is connected to the control unit 12. When the temperature sensor 18 detects that the battery temperature is lower than the set temperature, the control unit 12 switches on the switching element 11 and preheats the battery 1 with the planar PTC heater 3A. At this time, the control unit 12 controls the duty of switching the switching element 11 on and off, controls the temperature of the planar PTC heater 3A, and specifies the temperature at which the battery 1 is heated by the temperature of the planar PTC heater 3A. The battery 1 does not need to be heated to a high temperature like the heat dissipation plate 4. Therefore, the switching element 11 that preheats the battery 1 controls the duty to reduce the consumption of the battery 1 so that the ON time is shortened.

  8 has a charging circuit 25 for the battery 1 built in the case 2. The charging circuit 25 is mounted on the circuit board 7 built in the case 2. The charging circuit 25 includes a charge control unit 26 that charges a lithium ion secondary battery or a lithium polymer battery that is the square secondary battery 1A. The charging control unit 26 charges the square secondary battery 1A with constant current / constant voltage, detects full charge, and stops charging. Furthermore, the charging circuit 25 shown in the figure has a protective FET 27 connected in series with the square secondary battery 1A, and the protective FET 27 is controlled by the protective circuit 28. The protection circuit 28 detects overcharge or overdischarge of the battery 1 and controls the protection FET 27 to be turned on / off. When the charged battery 1 is fully charged and overcharged, the protection circuit 28 switches off the protection FET 27 and stops charging. When the discharged battery 1 is overdischarged, the protection circuit 28 switches off the protection FET 27 to stop the discharge of the battery 1.

8 is connected to an AC adapter 29, and direct current for charging the battery 1 is input from the AC adapter 29. The scallop is provided with a DC jack 30 for connecting an AC adapter 29, and the DC jack 30 is connected to the charging circuit 25. Since this pocket does not incorporate a circuit for converting the commercial power source into the charging voltage of the battery 1, the charging circuit 25 can be made small. However, the bonfire can be directly connected to a commercial power source to charge the battery. As shown in FIG. 17, this pocket furnace is provided with an AC plug 31 so that the case 2 can be folded. The AC plug 31 is connected to a charging circuit including a circuit for converting a commercial power source into a charging voltage for the battery 1 to charge the battery 1. This bonfire can charge the built-in battery 1 by connecting the AC plug 31 to a power outlet.

  Further, as shown in FIG. 18, the kaiseki can incorporate a non-contact charging circuit 32 in the charging circuit 35, and the built-in battery 1 can be charged by the non-contact charging circuit 32. As shown in FIG. 18, the charging circuit 35 including the contactless charging circuit 32 includes an induction coil 33 and a rectifier circuit 34 that rectifies the alternating current induced by the induction coil 33 and converts it into direct current. Yes. The output of the rectifier circuit 34 is input to the charge control unit 36 to charge the battery 1. As shown in FIG. 19, the squirrel containing the contactless charging circuit 32 is placed on the charging base 40 containing the output coil 41 to charge the battery 1. The charging stand 40 includes an output coil 41 that transmits high-frequency power to the contactless charging circuit 32 by electromagnetic induction, and a power supply circuit 42 that supplies the output coil 41 with high-frequency power. Thus, the squirrel which charges the battery 1 with the non-contact charging circuit 32 can be conveniently charged without any contact failure of the connector.

  Furthermore, the squirrel which charges the battery 1 by supplying DC power to the charging circuit 25 connects the charging circuit 25 to the USB terminal 14 and connects the USB terminal 14 to a computer or the like as shown by a chain line in FIG. The battery 1 can be charged.

  In addition, although not shown, the following functions can be added to the squirrel of this embodiment. For example, in the pocket furnace, the outer shape of the case may be a plate-shaped heart shape. It is heart-shaped and has a warm temperature as a squirrel, making it possible for the user to feel emotionally warm. In addition, when this heart-shaped furnace has the above-mentioned vibration function so that it can be vibrated as needed by operating the button, the heart-shaped vibrator vibrates and presents the furnace to other people. , The impression can be given to the recipient as if the heart of the passing person is pounding. Further, the outer shape of the case, the appearance of the pattern, etc., can be a plate-shaped smoldering mold. Tsuba-yaki is a well-known food in Japan, which has a fish outline, pattern, and other appearances, and is made by baking kneaded flour with sweet bean jam. . By giving the above-mentioned vibration function to such a firewood-type squirrel furnace, it is possible to give an impression that the firewood is moving dynamically and to give a pleasant impression to the user. Similarly, the appearance of the case, such as the outer shape and pattern, can be a plate-like animal, a character such as a manga, and the user can have a pleasant impression. Moreover, a fragrance | flavor can be appropriately spread | diffused according to the temperature of a squirrel by putting an fragrance | flavor in a case and providing an opening in a case. In addition, a digital music playback function using MP4 or the like can be added to the hood.

20 and 21 has one heater 3 built in a case 82. 20, 21, and 22, the description of the structures and configurations equivalent to the structures and configurations disclosed in the above-described embodiments is omitted. The case 82 includes a plastic first case 82A and a second case 82B in which the square secondary battery 1A is built. In the second case 2B, the shielding plate 85 is integrally formed, and the heat radiating plate 84 is fixed to the lower surface. The heater 3 is disposed between the shielding plate 85 and the heat radiating plate 84 in a state where the heat radiating plate 84 is fixed to the second case 82B. The heater 3 is disposed at the center of the heat dissipation plate 84 and uniformly heats the entire surface of the heat dissipation plate 84. The heat radiating plate 84 has a shape in which the surface side is curved in a central convex shape. The heat radiating plate 84 can radiate far infrared rays efficiently by applying a paint that emits far infrared rays to the surface. A flat surface portion 84 </ b> A is provided on the inner surface of the heat radiating plate 84 that is thermally coupled to the heater 3. The heat radiating plate 84 incorporates the heater 3 inside the flat surface portion 84 </ b> A, and effectively conducts heat of the heater 3 to the heat radiating plate 84. In particular, the heat conduction efficiency between the heater 3 and the heat dissipation plate 84 can be increased by applying a thermal bonding paste 89 such as silicon between the heat dissipation plate 84 and the heater 3.

  Furthermore, in the illustrated furnace, a metal plate 88 for energizing the heater 3 is disposed between the heater 3 and the heat radiating plate 84. This structure is suitable for a structure in which the heater 3 is a planar PTC heater 3A. The metal plate 88 is in contact with an electrode provided on the surface of the planar PTC heater 3A and energizes the planar PTC heater 3A. The metal plate 88 is provided with a protruding portion 88a that protrudes locally in order to ensure electrical connection with the planar PTC heater 3A. The protrusion 88a contacts the electrode on the surface of the planar PTC heater 3A and is electrically connected. Further, the metal plate 88 is thermally coupled to the planar portion 84A of the heat radiating plate 84 in a surface contact state with the entire shape being planar. Further, the flat portion 84A of the heat radiating plate 84 and the metal plate 88 are coated with a thermal bonding paste 89 such as silicon paste to increase the heat conduction efficiency.

  In this structure, the heat of the planar PTC heater 3A is not directly conducted to the heat radiating plate 84 but is conducted through the metal plate 88, so that the temperature change of the radiating plate 84 with respect to the temperature change of the planar PTC heater 3A is reduced. it can. As shown in FIG. 22, the planar PTC heater 3 </ b> A is controlled to a set temperature by turning on and off the switching element 11 connected to the battery 1 as a power source. The planar PTC heater 3A is heated when the switching element 11 is on, and the planar PTC heater 3A is not heated when the switching element 11 is off. Therefore, the temperature of the planar PTC heater 3 </ b> A changes depending on whether the switching element 11 is on or off. This temperature change can be eliminated by a structure in which the heat of the planar PTC heater 3 </ b> A is conducted to the heat radiating plate 84 through the metal plate 88. Further, the control circuit 6 that controls the duty of the switching unit 11 to turn on and off the switching element 11 and controls the temperature of the planar PTC heater 3A detects the temperature of the planar PTC heater 3A with the temperature sensor 10. The duty of the switching element 11 is controlled. As described above, in the squirrel whose temperature sensor 10 controls the duty of the switching element 11, a time delay occurs in the temperature detection of the planar PTC heater 3A, and the temperature of the planar PTC heater 3A becomes higher than the set temperature, or May be lower. This adverse effect can also be eliminated by a structure in which the heat of the planar PTC heater 3A is conducted to the heat radiating plate 84 through the metal plate 88.

  Further, the control circuit 6 for controlling the duty of controlling the switching element 11 to turn on and off to control the temperature of the planar PTC heater 3A is continuously planar when the power switch 19 of the hood is switched on. The PTC heater 3A can be energized and heated to the set temperature in a very short time. When the planar PTC heater 3A reaches the set temperature, the duty of switching the switching element 11 on and off is controlled to control the temperature of the planar PTC heater 3A.

  Furthermore, the bonfire of FIG. 22 incorporates a security buzzer 80. The security buzzer 80 supplies power from the battery 1 that energizes the heater 3. The security buzzer 80 built in the squirrel furnace includes a buzzer 80A and a security circuit 80B for controlling the alarm sound generation state of the buzzer 80A. The security circuit 80B is connected to an alarm switch 81. The alarm switch 81 is a switch that is turned on when a pin is pulled out by pulling a string, or is turned on and off by pulling a string, as used in a security buzzer 80 that is already on the market. However, this alarm switch may be structured such that a switch is provided outside the case and this switch is turned on and off.

When the alarm switch 81 is turned on, the security circuit 80B energizes the buzzer 80A with the power supplied from the battery 1 and generates an alarm sound from the buzzer 80A. The crime prevention circuit 80B is preferentially supplied with electric power over the heater 3 of the hood. Therefore, the control unit 12 is connected to the battery 1
When the remaining capacity or voltage of the battery 1 becomes smaller than the set value, the switching element 11 is turned off, the energization to the heater 3 is stopped, and only the security buzzer 80 is detected. The power can be supplied. This pocket can be used as a security buzzer 80 even when the heat dissipation plate 84 cannot be heated by the battery 1. In particular, the power consumption of the security buzzer 80 is small compared to the power consumption of the heater 3, and in particular, the power consumption when the buzzer 80 </ b> A does not generate an alarm sound is very small and the heater 3 is not energized. However, it can be used as the security buzzer 80 for a considerably long time.

The hood with built-in security buzzer 80 has the following excellent features.
(1) The buzzer can be quickly operated in an emergency.
There are many types of general security buzzers that are hung from a school bag or a bag. In an emergency, it is difficult to pull a string when turning on an alarm switch. On the other hand, as with the present invention, a hood with a built-in crime prevention buzzer is always used with the hand held in order to take advantage of the function of the hood, or carried in a pocket, so it can be quickly used in an emergency. Can be operated. In particular, there is a feature that criminals are not aware of possession of a security buzzer when held in their hands or in a pocket. For this reason, there is no fear that the crime prevention buzzer will be caught by criminals and cannot be used in an emergency.
(2) The buzzer can be operated reliably even on cold night roads.
In recent years, an increasing number of children and students go to night cram schools with security buzzers. The number of women carrying crime prevention buzzers at night is increasing due to the increase in molesters and stalking crimes. This is because if you encounter a criminal, you will not hear much fear. However, on cold night roads and the like, there is a possibility that the crime prevention buzzer cannot be operated in an emergency because the fingertip is pinched by the cold. As in the present invention, in a squirrel having a built-in crime prevention buzzer, the fingertip can be warmed by the function of the squirrel, so that it is possible to avoid a situation where the crime prevention buzzer does not sound even on a cold winter night. In addition, warming the fingertips and body also has the effect of relieving fear in dark and cold nights.
(3) The remaining battery capacity can be confirmed.
A general security buzzer has a drawback that it is difficult to check the remaining battery capacity. This is because it is necessary to turn on the alarm switch and sound the buzzer. In this state, since a loud alarm sound sounds around, it is impossible to always check the remaining capacity in consideration of inconvenience and attention to the surroundings. However, if the battery of the security buzzer runs out, it will be important in an emergency. On the other hand, in the squirrel of the present invention, the presence or absence of the remaining capacity of the battery can be determined by the warmth of the squirrel.

DESCRIPTION OF SYMBOLS 1 ... Battery 1A ... Square type secondary battery
1a ... Flat surface 2 ... Case 2A ... First case
2B ... 2nd case 3 ... Heater 3A ... Planar PTC heater 4 ... Radiation plate 4a ... Unevenness 5 ... Shield plate 6 ... Control circuit 7 ... Circuit board 8 ... Adjustment sheet 9 ... Elastomer 10 ... Temperature sensor 11 ... Switching element 12 ... Control unit 13 ... Memory 14 ... USB terminal 15 ... LED
DESCRIPTION OF SYMBOLS 16 ... Outside temperature sensor 17 ... Vibrator 18 ... Temperature sensor 19 ... Power switch 20 ... Set screw 21 ... Connecting rib 22 ... Peripheral wall 23 ... Step part 24 ... Bottom plate 25 ... Charging circuit 26 ... Charge control part 27 ... Protection FET
DESCRIPTION OF SYMBOLS 28 ... Protection circuit 29 ... AC adapter 30 ... DC jack 31 ... AC plug 32 ... Non-contact charge circuit 33 ... Inductive coil 34 ... Rectification circuit 35 ... Charging circuit 36 ... Charge control part 37 ... Metal plate 38 ... Metal plate 40 ... Charging Table 41 ... Output coil 42 ... Power supply circuit 52 ... Case 52A ... First case
52B ... 2nd case 54 ... Heat dissipation plate 55 ... Shielding plate 61 ... Body part 62 ... Bending part 63 ... Connecting part 64 ... Heat release plate 72 ... Case 74 ... Heat release plate 80 ... Security buzzer 80A ... Buzzer
80B ... Crime prevention circuit 81 ... Alarm switch 82 ... Case 82A ... First case
82B ... Second case 84 ... Heat dissipation plate 84A ... Plane portion 85 ... Shielding plate 88 ... Metal plate 88a ... Projection portion 89 ... Heat bonding paste 91 ... Battery 92 ... Case 93 ... Heater 94 ... Heater circuit

Claims (32)

A battery (1), a case (2) containing the battery (1), a heater (3) energized and heated by the battery (1) contained in the case (2), and the heater ( 3) a squirrel having a heat dissipation plate (4) thermally coupled to
The battery (1) is a prismatic lithium ion secondary battery or a prismatic secondary battery (1A) made of a lithium polymer battery with both opposing surfaces being flat surfaces (1a), and the heater (3) is a heating element. The heating element is disposed opposite the flat surface (1a) of the battery (1), and a shielding plate (5) is provided between the heating element and the flat surface (1a) of the battery (1). Arranged,
The case (2) is provided with a plastic first case (2A) and a second case (2B) containing a square secondary battery (1A), and the second case (2B) is integrated with the shielding plate (5). As well as molding
Furthermore, the case (2) has a heat radiating plate (4) made of a metal plate that is heated by being thermally coupled to the heating element by closing the opening of the second case (2B).
The flat surface (1a) of the rectangular secondary battery (1A), the shielding plate (5), the heating element and the heat dissipation plate (4) are arranged in a laminated structure, and the heating element is disposed on the surface of the case (2). Heating the heat radiating plate (4)
In the second case (2B), the bottom portion of the opening serves as the shielding plate (5) to form a recess, and the heating element is housed in the recess.   2. A furnace according to claim 1, wherein the heating element is planar.   3. A furnace according to claim 2, wherein the flat heating element is arranged in parallel with the flat surface (1a) of the battery (1).   The squirrel furnace according to claim 2 or 3, wherein the heating element is a planar PTC heater (3A).   A square secondary battery (1A) is disposed between the first case (2A) and the shielding plate (5), and a heating element is disposed between the shielding plate (5) and the heat dissipation plate (4). The hood according to claim 1.   The control circuit (6) includes a control circuit (6) for controlling the power supplied from the prismatic secondary battery (1A) to the heating element, and a temperature sensor (10) for detecting the temperature of the heat radiating plate (4). 2. A furnace according to claim 1, wherein the temperature of the heat radiating plate (4) is controlled by controlling the supplied power.   The squirrel furnace according to claim 6, wherein the control circuit (6) controls the initial set temperature of the heat radiation plate (4) to be higher than the normal set temperature.   The control circuit (6) includes a switching element (11) connected between the battery (1) and the heating element, and a control unit (12) for controlling the switching element (11). 7. A furnace according to claim 6, wherein 12) controls the temperature of the heat radiating plate (4) by controlling a duty for switching the switching element (11) on and off at a predetermined cycle.   The outside air temperature sensor (16) is arranged on the opposite side of the heating element, and the non-use state of the hood is determined based on the detected temperature of the outside air temperature sensor (16) to turn off the power. Scallop. 2. A furnace according to claim 1, wherein a vibrator (17) driven by the battery (1) is built in the case (2).   The furnace according to claim 1, wherein a plurality of heating elements having different set temperatures are incorporated, and the temperature of the heat radiating plate (4) is controlled by switching the heating elements to be energized. 2. A furnace according to claim 1, wherein a heating element and a heat radiating plate (4), (54) are provided on both surfaces of the battery (1) via shielding plates (5), (55).   The control circuit (6) includes a memory (13) for storing a set temperature, and has a USB terminal (14) connected to the control circuit (6), and is connected to the computer via the USB terminal (14). 7. A squirrel furnace according to claim 6, wherein the set temperature stored in the memory (13) is changed by being connected.   The case (2) includes a plurality of LEDs (15), and the control circuit (6) has a built-in memory (13) for storing the lighting state of the LEDs (15). ) Is connected to the computer via this USB terminal (14) so that the lighting state of the LED (15) stored in the memory (13) is changed. A squirrel furnace according to claim 6.   2. A furnace according to claim 1, wherein the surface of the heat radiating plate (4) is covered with an elastomer (9).   The squirrel furnace according to claim 4, wherein the planar PTC heater (3A) is connected in series with the battery (1) and used in combination with a protection circuit for the battery (1).   The control circuit (6) includes a temperature sensor (18) for detecting the temperature of the battery (1), and the heating element preheats the battery (1) when the battery temperature is lower than a set temperature. To be fired.   2. A furnace according to claim 1, wherein the battery (1) is a lithium polymer battery, and the heat dissipation plate (74) and the case (72) can be deformed.   2. A furnace according to claim 1, wherein a charging circuit (25), (35) for the battery (1) is built in the case (2).   20. A furnace according to claim 19, wherein the charging circuit (35) comprises a contactless charging circuit (32).   The squirrel furnace according to claim 19, wherein the charging circuit (25) is connected to the USB terminal (14), and the battery (1) is charged from the USB terminal (14).   An AC plug (31) connected to the charging circuit (25) is provided in the case (2), and the AC plug (31) is connected to an outlet to charge the battery (1). The squirrel described in   The squirrel furnace according to claim 1, wherein innumerable irregularities (4a) are provided on the surface of the heat radiating plate (4).   The hood according to claim 1, wherein the heat radiating plate (84) has a flat surface portion (84A) on the inner surface, and the flat surface portion (84A) is thermally coupled to the heater (3).   Between the heat radiating plate (84) and the heater (3), there is a metal plate (88) that energizes the heater (3), and the metal plate (88) is in surface contact with the heat radiating plate (84). 2. A squirrel furnace according to claim 1, which is thermally coupled and electrically connected to the heater (3) via a protrusion (88a).   The squirrel furnace according to claim 1, further comprising a security buzzer (80) for supplying electric power from a battery (1) for energizing the heater (3). When the remaining capacity or voltage of the battery (1) is detected, and the remaining capacity or voltage becomes smaller than the set value, the power to the heater (3) is cut off and the power is supplied only to the security buzzer (80). 27. A furnace according to claim 26, which includes a control unit (12). A battery (1), a case (2) containing the battery (1), a heater (3) energized and heated by the battery (1) contained in the case (2), and the heater ( 3) a squirrel having a heat dissipation plate (4) thermally coupled to
The battery (1) is a prismatic lithium-ion secondary battery or a prismatic secondary battery (1A) made of a lithium polymer battery with both opposing surfaces being flat surfaces (1a), and the heater (3) is a planar one. The heating element is disposed opposite the flat surface (1a) of the battery (1), and the case (2) is thermally coupled to the heating element by closing the opening of the case (2). A heat radiating plate (4) made of a metal plate that is heated
The heating element heats the heat radiating plate (4) on the surface of the case (2),
A hood with the opening having a bottom and forming a recess, and the heating element is housed in the recess. In addition,
A control unit (12) for detecting the remaining capacity of the battery (1);
A power switch (19) provided in the case (2) for turning the power ON / OFF;
The case (2) is provided with an LED (15) that can be lit with a different lighting pattern determined in advance according to the remaining capacity of the battery (1),
When the power switch (19) is turned off, the control unit (12) detects the remaining capacity of the battery (1), and the LED (15) is turned on in a lighting pattern corresponding to the detected remaining capacity. It is comprised so that it may light, The firearm described in Claim 1 or 28 characterized by the above-mentioned. A battery (1), a case (2) containing the battery (1), a heater (3) energized and heated by the battery (1) contained in the case (2), and the heater ( 3) a squirrel having a heat dissipation plate (4) thermally coupled to
The battery (1) has a surface in the extending direction,
The heater (3) is a flat heating element, and the heating element is arranged in parallel with the surface in the extending direction of the battery (1), and the case (2) has an opening of the case (2). A heat dissipating plate (4) made of a metal plate that is closed and thermally coupled to the heating element and heated is arranged on the surface,
The heating element heats the heat radiating plate (4) on the surface of the case (2),
A hood with the opening having a bottom and forming a recess, and the heating element is housed in the recess.   Between the heat radiating plate (84) and the heater (3), there is a metal plate (88) that energizes the heater (3), and the metal plate (88) is in surface contact with the heat radiating plate (84). The squirrel furnace according to any one of claims 1, 28 and 30, which is thermally coupled. The case (2) includes a first case (2A) and a second case (2B) made of plastic. The second case (2B) integrally forms a shielding plate (5) and a heat dissipation plate (on the surface). 4) is fixed, the battery (1) is placed between the first case (2A) and the shielding plate (5), and the heating element is placed between the shielding plate (5) and the radiation plate (4). 31. A squirrel according to claim 28 or 30, wherein

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