JP2000075065A - Watch provided with thermal power generation unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a watch in which the power generation efficiency of a thermal power generation unit is good. SOLUTION: In a watch, an electricity storage member which can be charged is provided, an upper drum 220 which is made of a heat conductive material is provided, and a rear lid 226 which is made of a heat conductive material is provided. In a thermal power generation unit 180, one or more thermoelectric elements 140 are housed, a first heat conducting plate 120 which constitutes a heat absorbing plate is contained, and a second heat conducting plate 170 which constitutes a heat sink and which is constituted so as to be capable of transmitting heat to the upper drum 220 is contained, A heat conducting spacer 320 is made of a heat conductive material, and it is arranged so as to come into contact with the first heat conducting plate 120 and with the inside face of the rear lid 226. A lower drum 224 which constitutes a heat insulating member heat-insulates the rear lid 226 from the upper drum 220.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece provided with a thermoelectric generator unit containing a thermoelectric element for generating an electromotive force based on the Seebeck effect. In particular, the present invention is configured such that an electromotive force generated by a thermoelectric generator unit containing one or more thermoelectric elements is stored in a power storage member, operated by the electromotive force, and operated using the power storage member as a power source. Regarding the watch. Further, the present invention is configured such that an electromotive force generated by a thermoelectric generator unit containing one or more thermoelectric elements is stored in a power storage member, the power storage member operates using the electromotive force, and the power storage member operates using the power storage member as a power source. Portable electronic devices. The portable electronic device of the present invention includes an analog electronic clock, a digital electronic clock, an analog / digital combined electronic clock, a timer device, an alarm device, a timer and / or an analog electronic clock with an alarm, a timer and / or a digital with an alarm. Electronic watches, timers and / or analog / digital hybrid electronic watches with alarms.

[0002]

2. Description of the Related Art In a conventional thermoelectric wristwatch, for example, as disclosed in Japanese Patent Application Laid-Open No. 55-20483, a thermoelectric generator made up of a number of individual component parts is made of a metal casing. It is located between the bottom and the support ring. This thermoelectric generator (Peltier battery)
A hot pole is placed opposite the bottom of the casing and a cold pole is placed opposite the metal cover. In other structures,
The thermoelectric generator is held against the intermediate ring via a shock absorber. In other conventional electronic watches,
As disclosed in JP-A-8-43555,
With the first insulator as the heat absorbing side and the second insulator as the heat radiating side, an electromotive force is obtained at the output end, the electromotive force is stored in the power storage member, and the time display means is operated by the power storage member. I have.

In a timepiece having a conventional power generating element,
As disclosed in JP-A-9-15353,
Four thermoelectric elements are divided and arranged in a space inside the wristwatch other than the portion occupied by the movement. In this thermoelectric element, a p-type thermoelectric element and an n-type thermoelectric element are connected at an end to form a thermocouple. All the thermocouples are connected in series to form a thermoelectric element.
In a conventional thermoelectric power generation wristwatch, a real open flat 7-3259 is used.
As disclosed in Japanese Patent Publication No. 0, a thermoelectric generator is disposed between a back cover and a module cover. The thermoelectric generator includes a number of thermocouples.

[0004]

[0005] Any of the prior art documents,
It does not disclose a timepiece including a thermoelectric generator unit containing one or more thermoelectric elements. Thermoelectric elements have low resistance to external forces. In particular, in a thermoelectric element, since a large number of p-type thermoelectric elements and n-type thermoelectric elements in the form of elongated columns are arranged,
When a force in a direction perpendicular to the longitudinal direction is applied to the thermoelectric element and the n-type thermoelectric element, the thermoelectric element may be broken. Further, even when a force along the longitudinal direction is applied to the p-type thermoelectric element and the n-type thermoelectric element, if the force exceeds a certain magnitude, the thermoelectric element may be broken. Conventionally, the strength of the thermoelectric element could not be increased because the thermoelectric element was directly arranged in the space inside the wristwatch without mounting the thermoelectric element as a thermoelectric generation unit. When a plurality of thermoelectric elements are used, a means for connecting the thermoelectric elements is required.

Further, conventionally, the thermoelectric element is disposed inside the wristwatch with one surface of the thermoelectric element directly contacting the back cover of the wristwatch. Therefore, there is a possibility that a gap may be generated between the thermoelectric element and the back cover due to a dimensional tolerance of parts constituting the wristwatch (variation in dimensions of parts generated during manufacturing). Due to such a gap,
The power generation efficiency of the thermal power generation unit may be reduced.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a timepiece equipped with a thermoelectric generation unit, which has a structure in which the dimensional tolerance of the components constituting the timepiece is taken into consideration and which has a high power generation efficiency of the thermoelectric generation unit. It is in. Another object of the present invention is to provide a timepiece including a small and robust thermoelectric generator unit.

[0007]

In order to solve the above problems, a timepiece according to the present invention includes a chargeable power storage member constituting a power supply for operating the timepiece. A timepiece drive circuit for driving a timepiece is configured to be able to operate with a power storage member. A display member such as a pointer displays time-related information based on a time-related signal output from the clock drive circuit. The timepiece of the present invention has an upper body made of a thermally conductive material and a back cover made of a thermally conductive material. The thermoelectric generator unit houses one or more thermoelectric elements that generate an electromotive force based on the Seebeck effect, and includes a first heat transfer plate that forms a heat absorbing plate, forms a heat sink, and transfers heat to an upper body. Including a second heat transfer plate configured to be able to transfer.

[0008] A power supply operation control circuit is provided for storing the electromotive force generated by the thermoelectric generator unit in the power storage member. The heat conductive spacer is made of a material having heat conductivity. The heat conductive spacer is the first of the thermoelectric generator units.
The heat transfer plate and the inner surface of the back cover are arranged to be in contact with each other. A heat insulating member having heat insulating property is provided, and the heat insulating member is configured to insulate the back cover and the upper trunk. In the timepiece of the present invention, the heat conductive spacer is preferably made of a silicone rubber sheet. The heat conductive spacer is arranged such that one surface thereof contacts the first heat transfer plate of the thermoelectric generator unit and the other surface contacts the inner surface of the back cover. With this configuration, it is possible to realize a timepiece with good power generation efficiency of the thermoelectric generator unit, regardless of the tolerance of the components that make up the timepiece.

Further, in the timepiece of the present invention, the timepiece drive circuit is configured to be operated by the power storage member and to be directly operated by the electromotive force generated by the thermoelectric power generation unit. preferable. With this configuration, the electromotive force generated by the thermoelectric generator can be effectively used. Moreover, in the timepiece of the present invention, the heat conductor is configured to be able to contact the second heat transfer plate of the thermoelectric generator unit to transfer heat from the second heat transfer plate. It is preferable that the heat conductor is configured to be able to transmit heat to the upper body. Further, in the timepiece of the present invention, the thickness of the air layer existing between the component forming the driving portion of the timepiece and the back cover is such that the component forming the driving portion of the timepiece and the first heat transfer unit of the thermoelectric generator unit Preferably, it is configured to be larger than between the plate and the central portion of the opposite back lid.

With this configuration, it is possible to realize a timepiece having a high power generation efficiency of the thermoelectric power generation unit.
Further, the present invention provides a timepiece provided with a thermoelectric generator unit, wherein a first heat transfer plate forming a heat absorbing plate, a thermoelectric element generating an electromotive force by a Seebeck effect, and a second heat transfer plate forming a heat sink. And a back lid made of a thermally conductive material, a back lid made of a thermally conductive material, and arranged to conduct heat with the back lid and the first heat transfer plate. A heat conductive spacer, a heat conductor arranged to conduct heat with the second heat transfer plate, an upper body arranged to conduct heat with the heat conductor, and a power supply of the timepiece. A power storage member for storing the electromotive force generated by the thermoelectric generation unit, and a display member for displaying information on time or time by operating with the power storage member or the electromotive force generated by the thermoelectric generation unit. It was comprised so that it might have.

Further, the present invention provides a portable electronic device having a thermoelectric generator unit, wherein a first heat transfer plate constituting a heat absorbing plate, a thermoelectric element generating an electromotive force by a Seebeck effect, and a radiating plate. A thermoelectric generator unit including a second heat transfer plate, a back lid made of a thermally conductive material, and a heat transfer material made of a thermally conductive material and conducting heat with the back lid and the first heat transfer plate; A heat conductive spacer arranged so as to be capable of being disposed, a heat conductor arranged so as to be able to conduct heat with the second heat transfer plate, and an upper body arranged so as to be able to conduct heat with the heat conductor. , Constituting the power supply of the portable electronic device, and by the power storage member for storing the electromotive force generated by the thermoelectric generation unit, and by the power storage member, or by the electromotive force generated by the thermoelectric generation unit, time or time Display members for displaying information about Constructed as has.

Further, the present invention relates to a portable electronic device having a thermoelectric generation unit, wherein the thermoelectric generation unit includes a first heat transfer plate constituting a heat absorbing plate, a thermoelectric element for generating an electromotive force by a Seebeck effect, And a second heat transfer plate constituting a heat sink. The portable electronic device includes an outer case for housing components of the device including the thermoelectric generator unit. The outer case includes a heat absorbing member made of a heat conductive material, for example, a back cover, and a heat dissipating member made of a heat conductive material, for example, an upper body. Furthermore, in this portable electronic device, a heat conductive spacer made of a heat conductive and elastically deformable material, for example, a silicone rubber sheet can conduct heat between the heat absorbing member and the first heat transfer plate. It is arranged like that.
The heat-conducting spacer is a sheet-shaped component, and is compressed by the heat-absorbing member and the first heat transfer plate, so that heat can be reliably transmitted from the heat-absorbing member to the first heat transfer plate.

Further, in this portable electronic device, the second heat transfer plate is configured to be able to conduct heat to the heat radiating member. When such a portable electronic device is attached to an arm, heat of the arm is transferred to a heat absorbing member such as a back cover.
The heat transmitted to the back cover is transmitted to the first heat transfer plate of the thermoelectric generator unit via the heat conductive spacer. Due to this heat, the thermoelectric element of the thermoelectric generator generates an electromotive force due to the Seebeck effect. Then, the heat radiated by the second heat transfer plate of the thermoelectric generator unit is transmitted to a heat radiating member such as the upper body, and is released to the outside air. With this configuration, it is possible to realize a portable electronic device such as a timepiece having a high power generation efficiency of the thermoelectric generation unit.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. (1) Structure of a thermoelectric generation unit used in an embodiment of a timepiece including a thermoelectric generation unit of the present invention and a method of manufacturing the same A method of manufacturing a thermoelectric generation unit used in a timepiece including a thermoelectric generation unit of the present invention will be described. I do. Referring to FIG. 1, first, a first heat transfer plate 120 is prepared (Step 10).
1). Referring to FIGS. 2 and 3, the first heat transfer plate 120
Is made of a metal having good heat conductivity, for example, aluminum or copper. When the first heat transfer plate 120 is made of copper, its surface is preferably plated with nickel.

The first heat transfer plate 120 is a thin plate-like member having a substantially rectangular planar shape. The first heat transfer plate 120 includes a lead board base portion 120a for attaching a lead board.
A mounting guide hole 120b1 for guiding the lead substrate when mounting the lead substrate, and a processing guide hole 120b.
2 and a thermoelectric element base portion 120 for mounting the thermoelectric element
d1 and 120d2. When ten thermoelectric elements are used, five thermoelectric elements are used in the thermoelectric element base portion 12.
At 0d1, five thermoelectric elements are attached to the thermoelement stand portion 120d2. Therefore, the thermoelectric element base portion 1
The plane shapes of 20d1 and 120d2 are determined according to the plane shape of the thermoelectric element. Thermoelectric element stand part 120d1,
The thickness of 120d2 is smaller than the thickness of the lead board base portion 120a.

Referring to FIG. 4, the lead substrate 130 has a shape including an elongated portion. The lead substrate 130 may be a glass epoxy substrate or a polyimide film substrate. Lead patterns 130a1 to 130a for wiring ten thermoelectric elements in series
9 and two output terminal patterns 130t1 and 130t2 forming the output terminals of the thermoelectric generator unit.
30. Mounting guide holes 130b1 and 130b2 for positioning the lead substrate 130 when the lead substrate 130 is mounted on the first heat transfer plate 120 are provided in the lead substrate 130. Further, the assembly guide hole 130b
3, 130b4 are also provided on the lead substrate 130. The position of the guide hole 130b1 is determined corresponding to the position of the mounting guide hole 120b1 of the first heat transfer plate 120.

Referring to FIG. 1, next, the first heat transfer plate 12
Then, an adhesive is applied to the lead board base portion 120a (Step 102). This adhesive is preferably an epoxy-based adhesive. The adhesive may be another type of adhesive, such as a heat-sensitive adhesive, or may be a sheet adhesive. Referring to FIGS. 5 and 6, the mounting guide hole 120b1 of the first heat transfer plate 120 and the lead board 130 are next described.
And the mounting guide hole 130b1 of the lead board 1
30 is bonded to the first heat transfer plate 120 with an adhesive 132 (step 103). Referring to FIGS. 7 to 9, the thermoelectric element 140 of the thermoelectric generation unit used in the timepiece including the thermoelectric generation unit of the present invention includes an upper thermoelectric element substrate 142, a lower thermoelectric element substrate 144, and a plurality of P-type semiconductors. 146 and multiple N
Mold semiconductor 148. The upper thermoelectric element substrate 142
It has a plurality of conduction patterns 142a for conducting the type semiconductor 146 and the N-type semiconductor 148. The lower thermoelectric element substrate 144 includes a plurality of conduction patterns 144a for conducting the P-type semiconductor 146 and the N-type semiconductor 148,
Terminal pattern 144b1, 144b2 of thermoelectric element 140
And

Referring to FIGS. 7 to 10, a plurality of P-type semiconductors 146 and a plurality of N-type semiconductors 148 are arranged such that each P-type semiconductor 146 and each N-type semiconductor 148 are alternately connected in series. Are connected to the pattern of the upper thermoelectric element substrate 142 and the pattern of the lower thermoelectric element substrate 144. In the thermoelectric element 140 configured as described above, for example, if the side with the upper thermoelectric element substrate 142 is the heat radiation side and the side with the lower thermoelectric element substrate 144 is the heat absorption side, the N-type semiconductor 148
Inside, the electrons move toward the upper thermoelectric element substrate 142 on the heat dissipation side, and within the P-type semiconductor 146, the electrons move toward the lower thermoelectric element substrate 144 on the heat absorption side. The respective P-type semiconductors 146 and the respective N-type semiconductors 148 are electrically connected in series via the conductive pattern 142a of the upper thermoelectric element substrate 142 and the conductive pattern 144a of the lower thermoelectric element substrate 144. , P-type semiconductor 146
The heat transfer in the N-type semiconductor 148 is converted into a current, and an electromotive force is generated between the terminal patterns 144b1 and 144b2 of the lower thermoelectric element substrate 144.

Referring to FIGS. 1 and 2, the thermoelectric element base portions 120d1 and 120d2 of the first heat transfer plate 120 are next described.
Is applied with an adhesive (step 104). The adhesive used in this step 104 is, for example, a thermally conductive adhesive such as a silver paste. The adhesive may be an epoxy-based adhesive having thermal conductivity, or
Other types of adhesives having thermal conductivity may be used. Referring to FIGS. 1, 11 and 12, five thermoelectric elements 140a1 to 140a5 are fixed to one thermoelectric element base portion 120d1 of the first heat transfer plate 120, and five thermoelectric elements 140a6 to 140a10 are attached. Is fixed to the other thermoelectric element base portion 120d2 of the first heat transfer plate 120 (step 105).
In this step 105, each lower thermoelectric element substrate 144
In a state where the terminal patterns 144b1 and 144b2 are arranged near the lead substrate 130, the lower side surface of the lower thermoelectric element substrate 144 of the thermoelectric element 140 is placed on the thermoelectric element base portion 120d.
1 and 120d2 with a silver paste 134. Thereby, the lower thermoelectric element substrate 144 of the thermoelectric element 140 and the first heat transfer plate 120 can be thermally conducted.

Therefore, as shown in FIG. 11, the five thermoelectric elements 140a1 to 140a5 are arranged on one side (the right side in the figure) with respect to the lead substrate 130, and the five thermoelectric elements 1a
40a6 to 140a10 are arranged on the other side (left side in the figure) with respect to the lead substrate 130. In the above-described embodiment of the thermoelectric generator unit, the ten thermoelectric elements 140a1 to 140a1
Although 140a10 is used, the number of thermoelectric elements 140 is 1
The number may be one, or two or more. Further, the number of thermoelectric elements 140 is preferably an even number, but may be an odd number. Referring to FIG. 1, next, the silver paste used in Step 105 is dried (Step 106). In this step 106, for example, the drying temperature is 1
The temperature is preferably from 20 ° C to 150 ° C, and the drying time is preferably from 2 hours to 5 hours.

Next, a process inspection (1) is performed (Step 10).
7). In the process inspection (1), the resistance of each thermoelectric element 140 is measured. Referring to FIG. 1, FIG. 13 and FIG. 14, next, the terminal patterns 144b1 and 144b2 of the ten thermoelectric elements 140a1 to 140a10, the lead patterns 130a1 to 130a9 of the lead board 130, and the output terminal patterns 130t1 and 130t2, respectively. Are conducted by wire bonding 150 (step 108).
The wire bonding 150 includes a plurality of thermoelectric elements 14.
The thermoelectric elements 140 are wired so that 0 is connected in series. Referring to FIG. 13, conduction is established between the terminal pattern 144b1 of the thermoelectric element 140a1 and the output terminal pattern 130t1 of the lead board 130 by wire bonding 150. Terminal pattern 144b2 of thermoelectric element 140a1
And the lead pattern 130a1 of the lead substrate 130 is electrically connected by the wire bonding 150. Similarly, thermoelectric elements 140a1 to 140a5 are wired in series by wire bonding 150,
A thermoelectric element 140a10 is wired in series from a6. The thermoelectric element 140a5 and the thermoelectric element 140a10 are wired in series by the wire bonding 150 via the lead pattern 130a9 of the lead substrate 130.

Terminal pattern 144 of thermoelectric element 140a6
Conduction is made between b1 and the lead pattern 130a5 of the lead substrate 130 by wire bonding 150. Terminal pattern 140b2 of thermoelectric element 140a6 and lead substrate 1
The wire bonding 150 is conducted to the 30 output terminal patterns 130t2. By this step 108,
Ten thermoelectric elements 140a1 to 140a10 are connected in series, and the patterns 130t1 and 130t1 of the lead board 130 are connected.
30t2 constitutes an output terminal of the thermoelectric generator unit. Referring to FIG. 1, next, a process inspection (2) is performed (Step 1).
09). In the process inspection (2), ten thermoelectric elements 140
The resistance of a thermoelectric generation unit in which a1 to 140a10 are connected in series is measured.

Referring to FIGS. 15 and 16, the unit frame 160 of the thermoelectric generation unit used in the timepiece provided with the thermoelectric generation unit of the present invention is a member having a substantially rectangular outline, and has ten thermoelectric elements 140a1 to 140a1 to 140. It is configured in a shape that can surround the periphery of 140a10. The unit frame 160 includes a lower mounting portion 160d for mounting the first heat transfer plate 120, an upper mounting portion 160e for mounting the second heat transfer plate, and a lead board flap 160f for escaping the lead board 130. Having. Lower mounting portion 160d and upper mounting portion 1 of unit frame 160
When the first heat transfer plate 120 and the second heat transfer plate 170 are attached to the unit frame 160, the distance between the lower surface of the second heat transfer plate 170 and the upper
It is configured such that there is a gap with the upper surface of the.

The unit frame 160 is preferably made of a plastic such as ABS resin, polycarbonate and acrylic. Referring to FIG. 1 and FIG. 17, next, the unit frame 160 is composed of ten thermoelectric elements 140a1 to 140a1.
The unit frame 160 is fixed to the first heat transfer plate 120 so as to surround the periphery of 0 (step 110). At this time, the lead board protrusion 160f of the unit frame 160 is arranged so as to escape from the upper surface of the lead board 130. The unit frame 160 may be fixed to the first heat transfer plate 120 by fitting, bonding, or by welding a part of the unit frame 160 to the first heat transfer plate 120. Good. Referring to FIG. 1, next, grease is applied to the upper thermoelectric element substrate 142 of ten thermoelectric elements 140a1 to 140a10.
(Step 111).

The grease used in step 111 is preferably silicone grease having good thermal conductivity.
Use the product name "Toshiba Silicone Compound". FIG.
8 and FIG. 19, the second heat transfer plate 170 is fixed to the upper mounting portion 160e of the unit frame 160 (step 112). At this time, there is a gap between the lower surface of the second heat transfer plate 170 and the upper surface of the upper thermoelectric element substrate 142 of the thermoelectric element 140.
Is arranged. Therefore, the second heat transfer plate 170 and the upper thermoelectric element substrate 142 can be thermally conducted by the silicone grease 172. The second heat transfer plate 170 is made of a metal having good heat conductivity, for example, aluminum or copper. When the second heat transfer plate 170 is made of copper, its surface is preferably plated with nickel. The second heat transfer plate 170 is a thin plate-like member having a substantially rectangular planar shape. The outer shape of the second heat transfer plate 170 is formed in a size and a shape that can be attached to the upper attachment portion 160 e of the unit frame 160.

The second heat transfer plate 170 may be fixed to the unit frame 160 by fitting, bonding, or welding a part of the unit frame 160 to the second heat transfer plate 170. May be. By attaching the second heat transfer plate 170 to the unit frame 160, the thermoelectric generator unit 180
Thermoelectric elements 140a1 to 140 housed in
a10 can be reliably protected. Guide pins 170 c and 170 d for use when attaching the thermoelectric generation unit 180 to another member are provided on one surface of the second heat transfer plate 170. These guide pins 170c and 17
The second heat transfer plate 170 is attached to the unit frame 160 with 0d facing outward. The number of guide pins is preferably two, but may be one, or may be three or more.

Referring to FIG. 1, next, process inspection (3)
Is performed (step 113). In the process inspection (3), the resistance of the thermoelectric generation unit 180 is measured. Next, process inspection (4)
Is performed (step 114). In the process inspection (4), the power generation performance of the thermoelectric generation unit is measured. The power generation performance is measured by heating one heat transfer plate of the thermoelectric generation unit 180 with a heater and measuring the voltage output from the thermoelectric generation unit 180 with a voltmeter. When performing this measurement, the difference between the temperature in the room where the thermoelectric generator unit 180 is arranged and the heating temperature of the heater is kept constant. If necessary, any process inspection may be omitted, or an additional process inspection may be performed.

The following is an example of the thermoelectric generation unit 180 used in a timepiece provided with the thermoelectric generation unit of the present invention, and the sizes of components used in this thermoelectric generation unit. The longitudinal length of the thermoelectric unit: 15.2 mm The lateral width of the thermoelectric unit: 10.0 mm The thickness of the thermoelectric unit: 2.7 mm The longitudinal length of the thermoelectric element: 2.4 Mm Horizontal width of thermoelectric element: 2.2 mm Thickness of thermoelectric element: 1.3 mm Maximum thickness of first heat transfer plate: 0.5 mm Thickness of second heat transfer plate: 0.5 mm Distance between outer surface and inner surface of unit frame: 0.8 mm When voltage is generated using thermoelectric generator unit 180, first heat transfer plate 120 is used as heat absorbing plate and second heat transfer plate 1 is used as heat absorbing plate.
70 may be a heat radiating plate, or the first heat transfer plate 12
0 may be a heat radiating plate and the second heat transfer plate 170 may be a heat absorbing plate. The polarity of the voltage generated between the patterns 130t1 and 130t2 of the lead substrate 130 changes depending on how the heat absorbing plate and the heat radiating plate are determined.

The thermoelectric generation unit used in the timepiece of the present invention may be manufactured by the following steps. A first heat transfer plate is prepared, and an epoxy-based adhesive is applied to the lead board base portion 120a of the first heat transfer plate 120, and the lead board 1
30 is bonded to the first heat transfer plate 120, and the unit frame 160 is fixed to the first heat transfer plate 120. Next, the first heat transfer plate 120
A thermoconductive adhesive such as silver paste is applied to the thermoelectric element base portions 120d1 to 120d10, and ten thermoelectric elements 140a1 to 140a10 are respectively applied to the thermoelectric element base portions 120d1 and 120d2 of the first heat transfer plate 120. Stick. Next, the silver paste used in the above step 105 is dried, and the resistance of each thermoelectric element 140 is measured.

Next, the ten thermoelectric elements 140a1 to 140a14
0a10 respective terminal patterns 144b1, 144
b2 and the lead pattern 130a1 of the lead substrate 130
To 130a9 and output terminal patterns 130t1, 130
The wire bonding 150 is conducted to t2.
The wire bonding 150 includes a plurality of thermoelectric elements 14.
The thermoelectric elements 140 are wired so that 0 is connected in series. Next, ten thermoelectric elements 140a1 to 140a10
Are measured in series. Next, silicone grease was applied to ten thermoelectric elements 140a1.
140a10 is attached to the upper surface of the upper thermoelectric element substrate 142. Next, the second heat transfer plate 170 is fixed to the upper mounting portion 160e of the unit frame 160. Silicone grease 17
2 allows the second heat transfer plate 170 and the upper thermoelectric element substrate 142 to conduct heat.

Next, the resistance of the thermoelectric generation unit 180 is measured, and the power generation performance of the thermoelectric generation unit 180 is measured. (2) Structure of Embodiment of Watch Case with Thermoelectric Generation Unit of the Present Invention Next, the structure of a watch with a thermoelectric generation unit of the present invention will be described. Referring to FIG. 20 and FIG. 21, the completeness of a timepiece including the thermoelectric generator unit of the present invention, that is,
The clock body 200 includes an outer case 202 and a movement 2
04, a power generation block 206, a dial 208, a pointer 210, a frame 212, and a crown 214. The outer case 202 includes an upper body 220 and a decorative rim 22.
2, a lower body 224, a back cover 226, and a glass 228. Upper body 220 is made of a thermally conductive material. The upper body 220 is preferably made of brass, stainless steel or the like. The decorative rim 222 is preferably made of brass or stainless steel. The decorative edge 222 is attached to the upper body 220, but the decorative edge 222 need not be provided. The lower trunk 224 is
It is made of a material with good heat insulation. That is, the lower trunk 224
Is composed of a heat insulating member for insulating the upper trunk 220 and the back cover 226 from each other. Lower body 224 is made of U polymer or ABS
It is preferably made of plastic such as resin.

The back cover 226 is made of a thermally conductive material. The back cover 226 is preferably made of a metal such as stainless steel. The frame 212 is made of, for example, plastic. Glass 228 is attached to upper body 220. “Movement” means a mechanical body including a part that drives a timepiece. The movement 204 includes a power supply,
Operated by this power supply, a clock drive circuit for driving a clock, a converter such as a step motor operated by a signal output from the clock drive circuit, and a wheel train rotating based on the operation of the converter, A switching mechanism for correcting the position of the pointer 210 is provided. The hands 210 are attached to the train wheel, and display time or time information by rotating the train wheel. The hands 210 include, for example, an hour hand, a minute hand, and a second hand.

Regarding the “movement”, the back cover 226
Is referred to as the “back lid side” of the “movement”, and the side with the glass 228 is referred to as the “glass side” of the “movement”.
Called. The dial 208 is located on the “glass side” of the movement 204. The inner frame 212 is attached from the “back lid side” of the movement 204. (3) Structure of power generation block with thermoelectric generation unit used in embodiment of timepiece provided with thermoelectric generation unit of the present invention Referring to FIG. 22 to FIG. The power generation block 206 including the thermoelectric generation unit includes a thermoelectric generation unit 180, a booster circuit block 240, a circuit insulating plate 242, and a heat conductor 24.
4 and a power generation block frame 246.

Referring to FIG. 29, the heat conductor 244 is a plate-like member having a substantially circular outer peripheral shape, and is made of a material having heat conductivity. Preferably, the thermal conductor 244 is made of a metal such as copper, brass or the like. The heat conductor 244 is preferably formed in a flat shape and is not bent. With this configuration, the heat conductor 244 can be manufactured through a simple processing step. Referring to FIG. 30, the circuit insulating plate 242 is a thin plate-like member having a substantially circular outer peripheral shape, and is made of an electrically insulating material. The circuit insulating plate 242 is preferably made of a plastic such as polyimide or polyester. Referring to FIG. 31, the power generation block frame 246 is a member having a substantially circular outer peripheral shape, and is made of an electrically insulating material. The power generation block frame 246 is preferably made of a plastic such as polycarbonate or polyacetal. Three screw pins 246a to 246c are fixed to the power generation block frame 246.

Referring to FIG. 32, booster circuit block 2
40 includes a booster circuit board 250 having a substantially circular outer peripheral shape. The booster circuit board 250 is made of, for example, a glass epoxy board or a polyimide board. A boosting integrated circuit 252 for forming a boosting circuit, and a plurality of capacitors 2
60, a tantalum capacitor 262, and a plurality of diodes 264 are mounted on the booster circuit board 250.
The configuration of this booster circuit will be described later in detail.
Referring again to FIG. 22 to FIG. 28, the power generation block 2
06 is manufactured, the guide pins 170c and 170
d is inserted into the heat conductor 244, and the thermoelectric generator unit 180 is attached to the heat conductor 244 with the outer surface of the second heat transfer plate 170 in contact with the heat conductor 244. The thermoelectric generator unit 1 is connected to the thermoelectric generator unit
80 output terminal pattern 130t1 of the lead substrate 130
And 130t2 are brought into contact with the pattern of the booster circuit board 250, and the lead board 130 is fixed to the power generation block frame 246. In this state, the booster circuit board 250, the circuit insulating plate 242, and the heat conductor 244 are connected to the lead board 13
0 and the power generation block frame 246. As a result, the output terminal pattern 130t of the lead substrate 130
1 and 130t2 are conducted to the pattern of the booster circuit board 250. Further, the heat conductor 244 is fixed to the power generation block frame 246 by two heat conductor set screws 292. (4) Structure of Embodiment of Timepiece Equipped with Thermoelectric Generation Unit of the Present Invention Referring to FIG. 20, a movement 204 to which a dial 208 and hands 210 are attached is incorporated into an upper body 220,
The center frame 212 is incorporated into the back side of the movement 204. The power generation block 206 is arranged on the back cover side of the movement 204, and is fixed to the upper body 220 by a power generation block set screw 310.

The heat conductive spacer 320 is a heat generating unit 1
80 is located on the back cover side. Back lid 226 is lower trunk 22
Fixed to 4. In this state, the heat conductive spacer 320
Is one of the first heat transfer plates 12 of the thermoelectric generator unit 180.
0, and the other surface is in contact with the inner surface of the back cover 226. Referring to FIG. 33, in the embodiment of the timepiece including the thermoelectric generation unit of the present invention,
The movement 204 includes a circuit block 350 to which a clock driving integrated circuit for controlling the operation of the clock is mounted. A part of the back cover side surface of the circuit block 350 is disposed to face a part of the glass side surface of the power generation block frame 246. Referring to FIG. 34, the boost circuit lead terminal 216 is made of an elastic material such as spring steel and has the shape of a coil spring.

Referring again to FIG. 33, one end of the booster circuit lead terminal 216 is in contact with the pattern of the booster circuit board 250, and the other end is in contact with the pattern of the circuit block 350. The booster circuit lead terminal 216 is connected to the pattern of the booster circuit board 250 and the circuit block 350 in a compressed state.
Pattern is conducted. Referring to FIG.
In the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention, eight booster circuit lead terminals 216 are provided, each of which has a pattern of eight booster circuit boards 250 and a pattern of eight circuit blocks 350. Are conducted.
Two of these booster circuit lead terminals 216 are provided for transmitting a clock signal for the booster circuit, one is provided for transmitting a charge switching signal, and one is provided for transmitting a power generation detection signal. Two are provided for transmitting the secondary battery voltage detection signal, one is provided for the positive electrode, and one is provided for GND (ground).

Referring to FIG. 36, booster circuit block 2
40, the circuit board 250, the circuit insulating plate 242, and the heat conductor 244 are interposed between the lead board 130 and the power generation block frame 246.
Is fixed to the power generation block frame 246. Lead substrate 13
No. 0 indicates that the lead board holding plate 291 is arranged on the lead board 130 and the thermoelectric generator unit lead terminal set screw 29
0 is a screw pin 24 provided on the power generation block frame 246.
6a, the power generation block frame 2
It is fixed to 46. Referring to FIG. 37, the upper trunk 220
Has a convex portion 220a protruding in a direction with a back lid. The convex portion 220a is formed in a ring shape substantially along the circumference. That is, this convex portion 220a
It is located outside the movement, substantially along the circumference of the movement of the watch.

The heat conductor 244 has its glass side surface in contact with the convex portion 220 a of the upper body 220. Thermal conductor 2
Reference numeral 44 denotes a flat member, which is used for manufacturing the heat conductor 244.
Does not require bending. The heat conductor 244 is fixed to the upper body 220 by screwing the heat conductor set screw 292 to a female screw provided on the upper body 220. Since the heat conductor 244 is in contact with the upper body 220, heat transferred from the thermoelectric generator unit 180 is transmitted to the convex portion 220 a of the upper body 220 through the heat conductor 244. The heat conductor 244 used in the timepiece of the present invention has a smaller surface area than the conventional heat conductor that has been bent. As a result, by using such a heat conductor 244, heat can be extremely efficiently transmitted from the second heat transfer plate 170 to the convex portion 220a of the upper body 220.

Referring to FIG. 38, the heat conductive spacer 32
0 is the first heat transfer plate 1 of the thermoelectric generator unit 180 on one side.
20 and the other surface is in contact with the inner surface of the case back 226. 39, referring to FIG.
Is configured to have a shape obtained by partially removing a circle. The shape of the heat conductive spacer 320 is determined so as to correspond to the shape of the first heat transfer plate 120. Thermal conductive spacer 320
Is made of a material with good thermal conductivity. Heat conductive spacer 3
20 is preferably made of a silicone rubber sheet. Such a silicone rubber sheet is, for example, a “radiation silicone rubber sheet TC-
TH type ”,“ Gap pad ”by Kitagawa Industry Co., Ltd.
And "soft pads". Such a silicone rubber sheet is soft and compressible, and has good thermal conductivity.

Referring to FIG. 38, the thermoelectric generation unit 18
0 is attached to the timepiece, the surface 180 f on the back cover side of the thermoelectric generator unit 180 and the inner surface 226 f of the back cover 226
Is not a constant value due to variations in dimensions of related components. That is, the thickness of the upper body 220, the thickness of the heat conductor 244, the thickness of the thermoelectric generator unit 180, the position of the inner surface 226f of the back cover 226, the lower body 224
Have a tolerance (variation in manufacturing dimensions), so that the surface 18 on the back lid side of the thermoelectric generation unit 180
0f and an inner surface 226f of the back cover 226
3 also varies. Therefore, the back cover 226 cannot be fixed to the lower trunk 224 so that the back cover side surface 180f of the thermoelectric generator unit 180 and the inner surface 226f of the back cover 226 are in direct contact. However, the heat conductive spacer 3
Since the heat conductive spacer 20 is compressible, if the heat conductive spacer 320 is disposed between the surface 180 f on the back cover side of the thermoelectric generator unit 180 and the inner surface 226 f of the back cover 226, the heat conductive spacer 320 is compressed, so that the heat conductive spacer 320 is compressed. Power generation unit 1
The first heat transfer plate 120 of 80 and the back cover 226 can be made heat conductive.

In the present invention, the thickness of the heat conductive spacer 320 is determined by taking the tolerance of the related parts into consideration.
It is configured to be larger than the maximum value of the gap between the surface 180 f on the back lid side of 80 and the inner side surface 226 f of the back lid 226. For example, when the thickness of the heat conductive spacer 320 is 0.5 mm, the heat conductive spacer 320 is incorporated in a watch, and when the case back 226 is fixed to the lower body 224, the thickness of the heat conductive spacer 320 is reduced from 0.1 mm. 0.
The tolerance of the relevant parts can be determined to be 4 mm. With this configuration, heat can always be efficiently transmitted from the back cover 226 to the first heat transfer plate 120 of the thermoelectric generator unit 180 via the heat conductive spacer 320. Referring to FIG. 40, the back cover 226 is fixed to the lower body 224 by screwing a back cover set screw 372 into a female screw provided on the lower body 224. A plurality of back lid set screws 372, for example,
It is preferable to provide four. Pokkin 374 is the upper body 220
And the lower trunk 224, and the pad 376 is disposed between the back lid 226 and the lower trunk 224.

Referring to FIG. 41 and FIG. 42, a power supply for a timepiece, that is, a secondary battery 600 is provided in the movement 204. The secondary battery 600 includes a thermoelectric generation unit 180
Storage member 420 for storing the electromotive force generated by
Is configured. The secondary battery 600 is preferably formed of a rechargeable battery such as an ion lithium secondary battery, for example. Such a rechargeable battery is, for example, a “Titanium lithium ion secondary battery MT92” manufactured by Matsushita Battery Co., Ltd.
0 "(9.5 mm diameter x 2.0 mm thickness, nominal capacity of 3.0 mAh, nominal voltage of 1.5 volts). As a modified example, the secondary battery 6
Instead of 00, a chargeable capacitor can be used. Movement 204 includes circuit block 350. A clock driving integrated circuit 630 for controlling the operation of the clock is attached to the circuit block 350. The clock driving integrated circuit 630 includes a clock driving circuit 418.
The crystal oscillator 602 constituting the source oscillation is a circuit block 350
Mounted on The clock driving integrated circuit 630 includes a clock driving oscillation circuit, a clock driving frequency dividing circuit, and a motor driving circuit.

The movement 204 includes a switching mechanism including a winding stem 632, a shim (not shown), a bolt (not shown), and a ratchet (not shown), and the coil block 61.
0, the stator including the stator 612 and the rotor 614, the fifth wheel & pinion 616, the fourth wheel & pinion 618, the third wheel & pinion 620, and the second wheel & pinion 62
2, a wheel train including the minute wheel 624 and the hour wheel 626. The second hand 640 is attached to the fourth wheel & pinion 618. Minute hand 6
42 is attached to the center wheel & pinion 622. The hour hand 646 is attached to the hour wheel 626. The second hand 640, the minute hand 642 and the hour hand 646 constitute the hands 210. Referring to FIG. 20, the crown 214 is attached to the winding stem 632. (5) Configuration of Boosting Circuit Used in Embodiment of Timepiece Having Thermoelectric Generation Unit of the Present Invention Referring to FIG. 43, a boosting circuit 410 is provided to boost the voltage generated by thermoelectric generation unit 180. .
The oscillation circuit 412 is provided for driving the booster circuit 410. The Schottky diode 414 is provided to rectify the voltage generated by the thermoelectric generator unit 180 and the voltage boosted by the boost circuit 410. The power supply operation control circuit 416 sends the clock drive circuit 41 from the booster circuit 410 in accordance with the value of the voltage boosted by the booster circuit 410.
8 to the power storage member 420
It is provided for controlling the flow of power to the power storage device 420 and the flow of power from the power storage member 420 to the clock drive circuit 418. The power storage member 420 is provided to store the power boosted by the boost circuit 410 and supply the power to the timepiece drive circuit 418. The clock drive circuit 418 is configured to operate with the power boosted by the booster circuit 410 or the power stored in the power storage member 420.

The output terminal of the thermoelectric generation unit 180 is connected to the electromotive voltage input terminal of the booster circuit 410. The P-type electrode of the Schottky diode 414 is
0 output terminal. Schottky diode 4
The 14 N-type electrodes are connected to the oscillation circuit power supply terminal of the oscillation circuit 412. A boosted voltage output terminal of the booster circuit 410 is connected to an input terminal of the power supply operation control circuit 416.
The power storage terminal of the power supply operation control circuit 416
Is connected to the input terminal. An output terminal of the power supply operation control circuit 416 is connected to a power supply terminal of the timepiece drive circuit 418. The voltage at the output terminal of the thermoelectric generation unit 180 is Vp. The voltage of the boosted voltage output terminal of the booster circuit 410 is Vpp
And The voltage of the power supply terminal of the clock drive circuit 418 is Vic
And The voltage at the input terminal of power storage member 420 is Vca.

Referring to FIGS. 44, 46 and 47,
In the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention, the booster circuit 410 has a “switched capacitor type”.
Of the booster circuit. The booster circuit 410
It includes a first booster circuit 430, a second booster circuit 432, a third booster circuit 434, a fourth booster circuit 436, an inverter circuit 438, and smoothing capacitors 440, 442, 444. The electromotive voltage input terminal 450 of the booster circuit 410 is connected to the input terminal of the first booster circuit 430. The output terminal of the first booster circuit 430 is connected to the input terminal of the second booster circuit 432 and connected to one electrode of the smoothing capacitor 440. The other electrode of the smoothing capacitor 440 is G
Connected to ND terminal. An output terminal of the second booster circuit 432 is connected to an input terminal of the third booster circuit 434, and
Connected to one electrode of smoothing capacitor 442. The other electrode of the smoothing capacitor 442 is connected to the GND terminal. The output terminal of the third booster circuit 434 is connected to the fourth booster circuit 4.
36, and a smoothing capacitor 44
4 is connected to one of the electrodes. The other electrode of the smoothing capacitor 444 is connected to the GND terminal. Fourth booster circuit 4
36 output terminals are boosted voltage output terminals 4 of the booster circuit 410
52.

A pulse signal input terminal 454 for inputting a pulse signal from the oscillation circuit 412 is connected to an inverter circuit 438.
And the first pulse signal input terminal 494 of the first booster circuit 430, the first pulse signal input terminal 524 of the second booster circuit 432, and the first pulse signal input terminal 554 of the third booster circuit 434. , Is connected to the first pulse signal input terminal 554 of the fourth booster circuit 436. The output terminals of the inverter circuit 438 are the second pulse signal input terminal 498 of the first booster circuit 430, the second pulse signal input terminal 528 of the second booster circuit 432, the second pulse signal input terminal 558 of the third booster circuit 434, Connected to second pulse signal input terminal 558 of fourth booster circuit 436. Next, the operation of the booster circuit 410 will be described. A first booster circuit 430,
The second booster circuit 432, the third booster circuit 434, and the fourth booster circuit 436 receive a pulse signal from the oscillator circuit 412. The first booster circuit 430 boosts the voltage input from the electromotive voltage input terminal 450 about twice. Second booster circuit 432
Boosts the voltage output from the first booster circuit 430 approximately twice. The third booster circuit 434 includes the second booster circuit 43
2 is further increased by about twice. The fourth booster circuit 436 outputs the voltage output from the third booster circuit 434,
The pressure is further increased about twice. Therefore, the first booster circuit 430,
The second booster circuit 432, the third booster circuit 434, and the fourth booster circuit 436 perform boosting of about 16 times in total.

Next, the oscillation circuit 412 will be described.
Referring to FIG. 45, the output terminal of the inverter circuit 460 is connected to the input terminal of the inverter circuit 462 and to the first electrode of the capacitor 464. The output terminal of the inverter circuit 462 is connected to the inverter circuit 466.
And the first terminal of the capacitor 468
Connected to the electrodes. An output terminal of the inverter circuit 466 is connected to an input terminal of the inverter circuit 460 and an input terminal of the inverter circuit 470, and is connected to a first electrode of the capacitor 472. Inverter circuit 47
The 0 output terminal is connected to the input terminal of the inverter circuit 474. An output terminal of the inverter circuit 474 is connected to the pulse signal output terminal 476. The configuration is such that the pulse signal P1 is output from the pulse signal output terminal 476. The second electrodes of the capacitors 464, 468 and 472 are connected to the GND terminal 4 which is a low potential electrode of the power storage member 420.
78.

The power supply terminal of each inverter circuit is connected to the power supply terminal 480 of the oscillation circuit 412. The ground terminal of each inverter circuit is connected to GND terminal 478. With such a circuit configuration, a pulse signal having a duty of about 50% can be obtained. In the oscillation circuit 412, an N-channel transistor in the inverter circuit, P
The threshold voltage of the channel type transistor is, for example,
Assuming that the voltage is 0.3 V, the minimum drive voltage of the oscillation circuit 412 is 0.7 V. Next, the configuration of the first booster circuit 430 will be described. Referring to FIG. 46, the booster circuit 41
The zero electromotive voltage input terminal 450 is connected to the drain of the N-channel MOS transistor 490 and to the source of the N-channel MOS transistor 492.
The first pulse signal input terminal 494 is an N-channel type MOS
Connected to the gate of transistor 492 and to the gate of N-channel MOS transistor 496. The second pulse signal input terminal 498 is an N-channel type M
Connected to the gate of OS transistor 490 and N
Connected to the gate of channel type MOS transistor 502. The source of N-channel type MOS transistor 490 is connected to the drain of N-channel type MOS transistor 496 and to the second electrode of capacitor 504. The first electrode of the capacitor 504 is connected to the drain of the N-channel MOS transistor 492 and to the source of the N-channel MOS transistor 502. Output terminal 5 for outputting the boosted voltage
Reference numeral 06 is connected to the drain of the N-channel MOS transistor 502. GND terminal 508 is connected to the source of N-channel MOS transistor 496. Therefore, the first booster circuit 430 is configured to output the boosted voltage from the output terminal 506.

Next, the operation of the first booster circuit 430 will be described. First, when the first pulse signal input from the first pulse signal input terminal 494 is “HIGH”,
The second pulse signal input from the second pulse signal input terminal 498 becomes “LOW”, the N-channel MOS transistors 492 and 496 turn on, and the N-channel MOS
Transistors 490 and 502 turn off. The voltage supplied to the electromotive voltage input terminal 450 is supplied to the first electrode of the capacitor 504 via the N-channel MOS transistor 492, and the first electrode of the capacitor 504 rises to the voltage Va. The voltage of GND is supplied to the second electrode of the capacitor 504 via the N-channel MOS transistor 496, and the second electrode of the capacitor 504 becomes “LOW”.

Next, when the first pulse signal inputted from the first pulse signal input terminal 494 is "LOW", the second pulse signal inputted from the second pulse signal input terminal 498 becomes "HIGH". , N-channel MOS transistors 492 and 496 are turned off, and N-channel MOS
The transistors 490 and 502 are turned on. The voltage supplied to the electromotive voltage input terminal 450 is supplied to the second electrode of the capacitor 504 via the N-channel MOS transistor 490, and the second electrode of the capacitor 504 rises to the voltage Vb. The first electrode of the capacitor 504 rises to a voltage obtained by adding the voltages Va and Vb. This increased voltage is supplied to the output terminal 506 via the N-channel MOS transistor 502, and the voltage of the output terminal 506 becomes Vc
To rise.

The values of the voltages Va, Vb, and Vc are related to the maximum voltage that can flow between the source and the drain when the N-channel MOS transistor is turned on. When the voltage applied between the source and the drain of the N-channel MOS transistor is equal to or less than the maximum voltage value, any small voltage can be applied. However, if the voltage applied between the source and the drain of the N-channel MOS transistor is higher than the maximum voltage value, the voltage can be applied only up to the maximum voltage value no matter how large the voltage is applied.
That is, when the voltage supplied from the electromotive voltage input terminal 450 is equal to or less than the maximum voltage value of the N-channel MOS transistor 492, the voltage supplied from the electromotive voltage input terminal 450 and Va become the same voltage. Electromotive voltage input terminal 4
When the voltage supplied from 50 is higher than the maximum voltage value of N-channel MOS transistor 492, Va becomes N
It becomes the maximum voltage value of the channel type MOS transistor 492.

When the voltage supplied from the electromotive voltage input terminal 450 is equal to or less than the maximum voltage value of the N-channel MOS transistor 490, the voltage supplied from the electromotive voltage input terminal 450 and Vb become the same voltage. Become. The voltage supplied from the electromotive voltage input terminal 450 is an N-channel MOS
When the voltage is higher than the maximum voltage value of the transistor 490, V
b is the maximum voltage value of the N-channel MOS transistor 490. A voltage obtained by adding Va and Vb generated at the first electrode of the capacitor 504 is an N-channel MOS.
When the voltage is equal to or lower than the maximum voltage value of the transistor 502,
Vc is a voltage obtained by adding Va and Vb. When the voltage obtained by adding Va and Vb generated at the first electrode of the capacitor 504 is higher than the maximum voltage value of the N-channel MOS transistor 502, Vc becomes the maximum voltage value of the N-channel MOS transistor 502.

Here, the “maximum voltage value” of each of the N-channel MOS transistors described above is defined as the N-channel MOS transistor.
This is the “HIGH” voltage of each pulse signal input to the gate of the S transistor, that is, the voltage obtained by subtracting the threshold voltage from the voltage applied to the N-channel MOS transistor. By configuring first booster circuit 430 in this manner, first booster circuit 430 can efficiently boost this voltage even when the input voltage to be boosted is low. This configuration is particularly effective when the voltage at the electromotive voltage input terminal 450 is lower than the threshold voltage of the N-channel MOS transistor. The first booster circuit 430 is configured such that the turned-off MOS transistor is turned on at the same time as the turned-on MOS transistor is turned off. With such a configuration that the MOS transistor is turned on, the through current can be eliminated and the boosting efficiency can be increased.

Next, the configuration of the second booster circuit 432 will be described. Referring to FIG. 47, an input terminal 510 of the second booster circuit 432 connected to the output terminal 506 of the first booster circuit 430 is connected to the drain of the N-channel MOS transistor 520, and Connected to source. The first pulse signal input terminal 524 is connected to the N-channel MOS transistor 52
2 and to the gate of an N-channel MOS transistor 526, and to the gate of a P-channel MOS transistor 532. Second pulse signal input terminal 528 is connected to the gate of N-channel MOS transistor 520. The source of the N-channel MOS transistor 520 is an N-channel M transistor.
Connected to the drain of the OS transistor 526, and
Connected to the second electrode of capacitor 534. The first electrode of the capacitor 534 is connected to the drain of the N-channel MOS transistor 522, and is connected to the P-channel MOS transistor 522.
Connected to the drain of S transistor 536. An output terminal 536 for outputting the boosted voltage is connected to the substrate-grounded source of the P-channel MOS transistor 532. The GND terminal 538 is an N-channel MOS
Connected to the source of transistor 526. Therefore, in the second booster circuit 432, the boosted voltage is output from the output terminal 536.
It is configured to be output from.

Next, the operation of the second booster circuit 432 will be described. First, when the first pulse signal input from the first pulse signal input terminal 524 is “HIGH”,
The second pulse signal input from the second pulse signal input terminal 528 becomes “LOW”, the N-channel MOS transistors 522 and 526 are turned on, and the N-channel MOS
The transistor 520 and the P-channel MOS transistor 532 are turned off. The voltage supplied to the input terminal 510 is supplied to the first electrode of the capacitor 534 via the N-channel MOS transistor 522,
Of the first electrode rises to the voltage Va1. The voltage of GND is supplied to the second electrode of the capacitor 534 via the N-channel MOS transistor 526, and the second electrode of the capacitor 534 becomes “LOW”.

Next, when the first pulse signal inputted from the first pulse signal input terminal 524 is "LOW", the second pulse signal inputted from the second pulse signal input terminal 528 becomes "HIGH". , N-channel MOS transistors 522 and 526 are turned off, and N-channel MOS transistors 522 and 526 are turned off.
The transistor 520 and the P-channel MOS transistor 532 are turned on. The voltage supplied to the input terminal 510 is supplied to the second electrode of the capacitor 534 via the N-channel MOS transistor 520,
Of the second electrode rises to the voltage Vb1. Therefore, the first electrode of the capacitor 534 rises to a voltage obtained by adding the voltages Va1 and Vb1. This increased voltage is supplied to an output terminal 536 via a P-channel MOS transistor 532.
, And the voltage of the output terminal 536 rises to Vc1.

Here, the P-channel MOS transistor 532 has a configuration in which the voltage of the first electrode of the capacitor 534 is lower than the minimum voltage value at which a current can flow between the source and the drain of the P-channel MOS transistor 532. Has two operation modes. That is, when the voltage of the first electrode of the capacitor 534 is lower than 0.6 V (that is, a voltage at which a current flows in the forward direction from the drain of the P-channel MOS transistor 532 toward the substrate)
No voltage can be supplied to output terminal 536. The voltage of the first electrode of the capacitor 534 is 0.6 V or more;
In addition, when the voltage is less than the minimum voltage value at which current can flow between the source and the drain of the P-channel MOS transistor 532, the voltage of “(voltage of the first electrode of the capacitor 534) − (0.6V)” Is supplied to the output terminal 536.

On the other hand, when the voltage of the first electrode of the capacitor 534 is equal to or higher than the minimum voltage at which current can flow between the source and the drain of the P-channel MOS transistor 532, Whatever the voltage of one electrode is, the voltage can be supplied to the output terminal 536. Here, "P
The “minimum voltage value at which a current can flow between the source and the drain of the channel MOS transistor 532”
This is a value obtained by subtracting the threshold voltage of the P-channel MOS transistor 532 from the voltage of the gate of the P-channel MOS transistor 532. Therefore, FIG.
The “minimum voltage value” of the P-channel MOS transistor 532 shown in (1) is a value obtained by subtracting the threshold voltage from the “LOW” voltage value of the gate of the P-channel MOS transistor 532, that is, the threshold from the GND potential. This is a value obtained by subtracting the value voltage. As a result, the P-channel type M
The “minimum voltage value” of the OS transistor 532 is the “absolute value of the threshold voltage”. By configuring the second booster circuit 432 as described above, the second booster circuit 432 can efficiently boost the voltage when the voltage of the input terminal is equal to or higher than the minimum voltage value of the P-channel MOS transistor 532. It has the feature of being able to. The second booster circuit 432
At the same time when the ON MOS transistor turns off,
Although the off-state MOS transistor is configured to be turned on, the on-state MOS transistor is turned off, and thereafter, the off-state MOS transistor is turned on, thereby eliminating the through current. And boosting efficiency can be increased.

Next, the configuration of the third booster circuit 434 will be described. Referring to FIG. 48, an input terminal 540 of the third booster circuit 434 connected to the output terminal 536 of the second booster circuit 432 is connected to the substrate grounded source of the P-channel MOS transistor 550, and Connected to the drain of MOS transistor 552. The first pulse signal input terminal 554 is connected to the gate of the P-channel MOS transistor 550, is connected to the gate of the P-channel MOS transistor 562, and is connected to the gate of the N-channel MOS transistor 556. Second pulse signal input terminal 558 is connected to the gate of P-channel MOS transistor 552. The drain of P-channel MOS transistor 550 is connected to the drain of N-channel MOS transistor 556 and to the second electrode of capacitor 564. The first electrode of the capacitor 564 is connected to the substrate-grounded source of the P-channel MOS transistor 552, and is connected to the P-channel MOS transistor 562.
Connected to the drain of An output terminal 566 for outputting the boosted voltage is connected to the substrate-grounded source of the P-channel MOS transistor 562. GND terminal 568 is connected to the source of N-channel MOS transistor 556. Therefore, the third booster circuit 434 is configured so that the boosted voltage is output from the output terminal 566.

Next, the operation of the third booster circuit 434 will be described. First, when the first pulse signal input from the first pulse signal input terminal 554 is “HIGH”,
The second pulse signal input from the second pulse signal input terminal 558 becomes “LOW”, and the N-channel MOS transistor 556 and the P-channel MOS transistor 55
2 turns on, and the P-channel MOS transistors 550 and 562 turn off. The voltage supplied to the input terminal 540 is supplied to the first electrode of the capacitor 564 via the P-channel MOS transistor 552,
Of the first electrode rises to the voltage Va2. The voltage of GND is supplied to the second electrode of the capacitor 564 via the N-channel MOS transistor 556, and the second electrode of the capacitor 564 becomes “LOW”.

Next, when the first pulse signal input from the first pulse signal input terminal 554 is “LOW”, the second pulse signal input from the second pulse signal input terminal 558 becomes “HIGH”. , N-channel MOS transistor 556 and P-channel MOS transistor 55
2 turns off, and P-channel MOS transistors 550 and 562 turn on. The voltage supplied to the input terminal 540 is supplied to the second electrode of the capacitor 564 via the P-channel MOS transistor 550,
Of the second electrode rises to the voltage Vb2. Therefore, the first electrode of the capacitor 564 rises to a voltage obtained by adding the voltages Va2 and Vb2. The increased voltage is supplied to an output terminal 566 via a P-channel MOS transistor 562.
, And the voltage of the output terminal 566 rises to Vc2.

Here, when the voltage of the first electrode of the capacitor 564 is lower than the minimum voltage at which a current can flow between the source and the drain of the P-channel MOS transistor, efficient boosting is performed. Can not. On the other hand, when the voltage of the first electrode of the capacitor 564 is higher than the lowest voltage at which a current can flow between the source and the drain of the P-channel MOS transistor, the voltage of the first electrode of the capacitor 564 is Can be supplied to the output terminal 566. The third booster circuit 434 is configured so that the turned-off MOS transistor is turned on at the same time as the turned-on MOS transistor is turned off. However, the turned-on MOS transistor is turned off, and then turned off. With such a configuration that the MOS transistor is turned on, the through current can be eliminated, and the boosting efficiency can be improved.

Next, the configuration of the fourth booster circuit 436 will be described. Referring to FIG. 49, the input terminal 570 of the fourth booster circuit 436 is connected to the output terminal 56 of the third booster circuit 434.
6 is connected. An output terminal 596 for outputting the boosted voltage is a P-channel MOS transistor 56.
2 substrate connected to a grounded source. Therefore, the fourth
The booster circuit 436 is configured so that the boosted voltage is output from the output terminal 596. Fourth booster circuit 43
The configuration of the other parts of the sixth step is the same as the configuration of the third booster circuit 434 described above. Therefore, a detailed description of the configuration of the other parts of the fourth booster circuit 436 is omitted. Next, the operation of the fourth booster circuit 436 will be described. The operation of the fourth booster circuit 436 is similar to the operation of the third booster circuit 434 described above.

That is, first, the first pulse signal input from the first pulse signal input terminal 554 is “HIGH”.
, The second pulse signal input from the second pulse signal input terminal 558 becomes “LOW”, the N-channel MOS transistor 556 and the P-channel MOS transistor 552 turn on, and the P-channel MOS transistor 550 and 562 turns off. The voltage supplied to the input terminal 570 is a P-channel MOS transistor 552
To the first electrode of the capacitor 564, and the first electrode of the capacitor 564 rises to the voltage Va3. G
The voltage of ND is supplied to the second electrode of the capacitor 564 via the N-channel MOS transistor 556, and the second electrode of the capacitor 564 becomes “LOW”. Next, the first
When the first pulse signal input from the pulse signal input terminal 554 is “LOW”, the second pulse signal input terminal 5
The second pulse signal input from 58 becomes “HIGH”, the N-channel MOS transistor 556 and the P-channel MOS transistor 552 turn off, and the P-channel MOS transistors 550 and 562 turn on. The voltage supplied to the input terminal 570 is supplied to the second electrode of the capacitor 564 via the P-channel MOS transistor 550, and the second electrode of the capacitor 564 is connected to the voltage Vb3.
To rise. Therefore, the first electrode of the capacitor 564 rises to a voltage obtained by adding the voltages Va3 and Vb3. This increased voltage is supplied to the output terminal 596 via the P-channel MOS transistor 562, and the voltage of the output terminal 596 increases to Vc3.

Here, when the voltage of the first electrode of the capacitor 564 is lower than the minimum voltage at which a current can flow between the source and the drain of the P-channel MOS transistor, efficient boosting is performed. Can not. On the other hand, when the voltage of the first electrode of the capacitor 564 is higher than the lowest voltage at which a current can flow between the source and the drain of the P-channel MOS transistor, the voltage of the first electrode of the capacitor 564 is Can be supplied to the output terminal 596. The fourth booster circuit 436 is configured so that the turned-off MOS transistor is turned on at the same time as the turned-on MOS transistor is turned off. However, the turned-on MOS transistor is turned off, and then turned off. With such a configuration that the MOS transistor is turned on, the through current can be eliminated and the boosting efficiency can be increased.

As described above, the boosting circuit 410 shown in FIG.
2, a third booster circuit 434, and a fourth booster circuit 436. Boosting circuit 410 configured as above
, The voltage boosted by the first booster circuit 430 is
The voltage is further boosted by the booster circuit 432. Second booster circuit 4
The voltage boosted by 32 is further boosted by a third boosting circuit 434. The voltage boosted by the third booster circuit 434 is further boosted by the fourth booster circuit 436. In addition, in the booster circuit 410 configured as described above, the N-channel MOS transistor and the P-channel MOS transistor are arranged at appropriate locations according to the characteristics of the respective transistors. As a result, even when the voltage of the electromotive force terminal 450 is lower than or equal to the minimum drive voltage of the oscillation circuit 412, the voltage of the electromotive force terminal 450 is boosted by the first booster circuit 430, and the boosted voltage is Second booster circuit 432
, And the third booster circuit 434 and the fourth booster circuit 436 can further boost the voltage.

Referring again to FIG. 43 to FIG. 45, the output voltage Vp of the thermoelectric generator unit 180 changes with time from no output (output voltage = 0 V) to exceed the minimum drive voltage of the oscillation circuit 412. When the thermal power generation unit 1
The output voltage Vp of 80 is input to the oscillation circuit power supply terminal 480 of the oscillation circuit 412 through the Schottky diode 414. As a result, the oscillation circuit 412 starts operating,
Oscillation starts. The oscillation circuit 412 that has started oscillating outputs a pulse signal to the pulse signal output terminal 476, and the output pulse signal is input to a pulse signal input terminal of the booster circuit 410. The booster circuit 410 starts boosting the output voltage of the thermoelectric generator 180 by inputting the pulse signal. In this state, the booster circuit 41
Since the 0 boosted voltage output terminal 452 and the oscillation circuit power supply terminal 480 of the oscillation circuit 412 are connected, the boosted voltage becomes the power supply of the oscillation circuit 412. Since the Schottky diode 414 is connected between the output terminal of the thermoelectric generator unit 180 and the oscillation circuit power supply terminal 480, once the oscillation circuit 412 operates and starts boosting, the oscillation circuit 412 is turned on by the booster circuit 410. Use the boosted voltage as a power supply. Therefore, once the thermal power generation unit 1
If the output voltage Vp at 80 exceeds the minimum drive voltage of the oscillation circuit 412, even if the output voltage Vp of the thermoelectric generator 180 changes over time and becomes lower than the minimum drive voltage of the oscillation circuit 412, the voltage increases. Circuit 410 can continue boosting.

In this configuration, the voltage of power storage member 420 can be used as the oscillation start voltage of oscillation circuit 412. In this case, the voltage of power storage member 420 is supplied to oscillation circuit power supply terminal 480 through power supply operation control circuit 416, and oscillation of oscillation circuit 412 is started. Once the oscillating circuit 412 operates and starts boosting, the oscillating circuit 412 uses the voltage boosted by the boosting circuit 410 as a power supply, as in the above-described operation. The power supply operation control circuit 416 inputs the boosted voltage Vpp, and uses the value of the boosted voltage Vpp to supply electric power to the clock driving circuit 41.
8 and the power storage member 420. If the boosted voltage Vpp is equal to the voltage required to drive the clock drive circuit 418, the power supply operation control circuit 416 supplies the voltage boosted by the boost circuit 410 to the clock drive circuit 418.

If boosted voltage Vpp is higher than the voltage required to drive clock drive circuit 418, power supply operation control circuit 416 causes booster circuit 410 to operate.
Clock drive circuit 418 and power storage member 4
Feed to both 20. If the boosted voltage Vpp
Is smaller than the voltage required to drive the timepiece drive circuit 418, the power supply operation control circuit 416 supplies the voltage from the power storage member 420 to the timepiece drive circuit 418. By configuring the power supply operation control circuit 416 to operate in this manner, even when the boosted voltage Vpp becomes lower than the voltage at which the clock drive circuit 418 can be driven, the power supply operation control circuit 416 The clock driving circuit 418 can be continuously driven by the voltage. Therefore, with this configuration, the output voltage of the thermoelectric generator unit 180 can be used efficiently. (6) Operation of the embodiment of the timepiece including the thermoelectric generation unit of the present invention In the embodiment of the timepiece including the thermoelectric generation unit of the present invention, referring to FIG. 42, the output voltage of the thermoelectric generation unit 180 is: Boost circuit 410 or power supply operation control circuit 416
Is input to The voltage boosted by the booster circuit 410 is supplied to the clock drive circuit 418.

The clock driving circuit 418 includes a clock driving oscillation circuit, a clock driving frequency dividing circuit, and a motor driving circuit. The crystal oscillator 602 constitutes a source oscillation, for example, 3
It vibrates at 2,768 Hertz and outputs a reference signal to the clock drive oscillation circuit. The clock driving frequency dividing circuit performs a predetermined frequency dividing operation by inputting the output signal of the oscillation circuit.
Outputs hertz signal. The motor drive circuit receives the output signal of the clock drive frequency dividing circuit and outputs a drive signal for driving the step motor. Clock drive circuit 418
Operates with the voltage boosted by the booster circuit 410 or the voltage of the secondary battery 600. Power supply operation control circuit 41
6 controls the supply of the voltage boosted by the booster circuit 410 to the clock drive circuit 418 and the supply of the voltage of the secondary battery 600 to the clock drive circuit 418.

The coil block 610 receives a drive signal output from the motor drive circuit for driving the step motor, and magnetizes a plurality of poles of the stator 612. The rotor 614 is rotated by the magnetic force of the stator 612.
The rotor 614 rotates 180 degrees every second based on the above-mentioned one hertz signal. The fifth wheel & pinion 616 is rotated by the rotation of the rotor 614. The fourth wheel & pinion 618 rotates 6 degrees per second due to the rotation of the fifth wheel & pinion 616. The third wheel & pinion 620 is rotated by the rotation of the fourth wheel & pinion 618. The second wheel & pinion 622 is rotated by the rotation of the third wheel & pinion 620. The minute wheel & pinion 624 is rotated by the rotation of the second wheel & pinion 622. The hour wheel 626 is rotated by the rotation of the minute wheel 624. The second hand 640 attached to the fourth wheel & pinion 618 indicates “second”. "Minute" with minute hand 642 attached to the second wheel & pinion 622
Is displayed. "Hour" is displayed by the hour hand 646 attached to the hour wheel 626.

Referring to FIG. 20 and FIG. 50, when a watch equipped with the thermoelectric generator unit of the present invention is
Zero heat is transferred to the back cover 226. The heat of the back cover 226 is transferred to the thermoelectric generator unit 180 through the heat conductive spacer 320.
To the first heat transfer plate 120. That is, the first heat transfer plate 120 constitutes a heat absorption plate. The thermoelectric element 140 of the thermoelectric generation unit 180 generates an electromotive force by the Seebeck effect. Therefore, the second heat transfer plate 17 of the thermoelectric generation unit 180
0 constitutes a heat sink. The heat radiated by the second heat transfer plate 170 is transmitted to the upper body 220 via the heat conductor 244,
The air is released to the outside air 652. Referring to FIG. 20, the heat conductor 244 is in contact with the convex portion 220a of the upper body 220. In this configuration, as described above, the flat heat conductor 2
By using the heat transfer member 44, heat can be extremely efficiently transmitted from the second heat transfer plate 170 to the convex portion 220 a of the upper body 220. That is, such a flat heat conductor 24
With the configuration in which the contact member 4 is brought into contact with the convex portion 220a of the upper body 220, the thermal resistance in the heat radiation path can be reduced. Therefore, this configuration can improve the power generation efficiency of the thermoelectric power generation unit.

In the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention, the thermoelectric element 140 is, for example, a PN junction 5
The configuration is such that 10 pairs of modules including 0 pairs are connected in series, and the threshold voltages of the transistors included in the oscillation circuit 412 and the booster circuit 410 are 0.3. In the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention, the power generation amount of one thermoelectric material element constituting the thermoelectric element 140 is, for example, about 200 μV.
/ ° C. Therefore, assuming that the operating voltage of the timepiece is 1.5 V, in order to directly drive the timepiece by the thermoelectric generation unit, the temperature difference between the first heat transfer plate 120 and the second heat transfer plate 170 is 2 ° C. At some point, a thermoelectric element 140 having 18125 pairs of PN junctions is needed.

However, the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention employs the above-described booster circuit 4.
10, the oscillation circuit 412, and the power supply operation control circuit 416. Therefore, if the generated voltage immediately after the timepiece is put on the wrist exceeds the minimum drive voltage of the oscillation circuit 412, the operation in the steady state is continued. The generated voltage is the oscillation circuit 41
2. Even if the voltage becomes lower than the minimum drive voltage of
A boost by 10 is possible. For example, in an experiment on the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention, the generated voltage immediately after attaching the watch to the wrist was 2 V, and the generated voltage in the steady state thereafter was about 0.5 V. Was. In the embodiment of the timepiece including the thermoelectric generation unit of the present invention, when the threshold voltage of the transistor included in the oscillation circuit 412 is about 0.3 V, the minimum drive voltage of the oscillation circuit 412 is about 0.7 V Met.

For example, in the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention, as described above, the power supply operation control circuit 416 inputs the boosted voltage Vpp and calculates the value of the boosted voltage Vpp. , Power to the clock drive circuit 41
8 and the power storage member 420. If the boosted voltage Vpp is between 1.2 V and 1.5 V required to drive the clock drive circuit 418, the power supply operation control circuit 416 converts the voltage boosted by the boost circuit 410 to a clock. It is supplied to the drive circuit 418. If the boosted voltage V
If pp is a voltage higher than 1.5 V required to drive clock drive circuit 418, power supply operation control circuit 416 increases the voltage boosted by booster circuit 410 in both clock drive circuit 418 and power storage member 420. To supply.

If the boosted voltage Vpp is a voltage smaller than the voltage 1.2 V required to drive the clock driving circuit 418, the power supply operation control circuit 416 drives the voltage from the secondary battery 600 to the clock driving. The signal is supplied to a circuit 418. By configuring the power supply operation control circuit 416 to operate in this manner, even when the boosted voltage Vpp becomes lower than the voltage at which the timepiece drive circuit 418 can be driven, the power supply operation control circuit 416 The clock drive circuit 418 can be continuously driven by the voltage of. Therefore, with this configuration, the clock can continue to be driven even if the boosted voltage becomes lower than the voltage 1.2 V required to drive the clock drive circuit 418. (7) Structure of Embodiment of Electronic Device Equipped with Thermoelectric Generation Unit of the Present Invention Referring to FIGS. 51 and 52, an embodiment of a portable electronic device equipped with a thermoelectric generation unit of the present invention is a portable electronic device. The electronic device 700 includes a liquid crystal panel 710 and a speaker 712.
And a lamp 718.

The drive control circuit 720 controls the power supply operation circuit 41
6 is operated by the voltage supplied from. In this embodiment, the configuration and operation of the thermoelectric generation unit 180, the booster circuit 410, the oscillation circuit 412, the power supply operation circuit 416, the secondary battery 600, and the quartz oscillator are the same as those of the timepiece including the thermoelectric generation unit of the present invention described above. This is the same as the embodiment. Therefore,
A detailed description of them will be omitted. The drive control circuit 720 is configured to measure time information, alarm time information, and elapsed time information based on the vibration of the crystal oscillator 602. The display control circuit 730 outputs a signal for operating the liquid crystal panel 710 to the liquid crystal panel 710 based on a signal output from the drive control circuit 720. Therefore, the liquid crystal panel 710
Based on a signal output from the display control circuit 730, information on time or time is displayed.

The speaker control circuit 732 outputs a signal for operating the speaker 712 to the speaker 712 based on the signal output from the drive control circuit 720. The speaker 712 emits an alarm sound based on a signal output from the speaker control circuit 732 when it is time to generate an alarm sound. The sound emitted from the speaker 712 is
The user goes out of the portable electronic device 700 from 12a. Four buttons for operating the portable electronic device 700, that is, a first button 740, a second button 742, a third button 744, and a fourth button 746 are provided. FIG. 51 shows only the first button. A first switch terminal 750 is provided to perform a switch operation when the first button 740 is pressed. A second switch terminal 752 is provided so as to perform a switch operation when the second button 742 is pressed. The third switch terminal 754 is the third button 7
The switch is operated so as to be operated by pressing the switch 44. A fourth switch terminal 756 is provided to perform a switch operation by pressing the fourth button 746. The operation of the switch is performed by each switch terminal applying an input signal to a corresponding switch input terminal of the drive control circuit 720.

The lamp control circuit 738 includes the drive control circuit 7
A signal for lighting the lamp 718 is output to the lamp 718 based on the signal output from the lamp 20. For example, the lamp control circuit 738 is configured to operate by pressing the fourth button 746 to turn on the lamp 718. In the embodiment of the electronic device including the thermoelectric generation unit according to the present invention, the portable electronic device 700 includes a liquid crystal panel 710.
, A liquid crystal panel 710 and a speaker 712, a liquid crystal panel 710 and a lamp 718, or a liquid crystal panel 710.
And a speaker 712 and a lamp 718.
Further, the portable electronic device 700 may further include a clock driving circuit as shown in FIG. 42 and a pointer operated by the clock driving circuit. With this configuration, it is possible to realize a composite display type portable electronic device having both an analog display and a digital display.

In portable electronic device 700, liquid crystal panel 710 is configured to display time information.
A digital watch can be realized. Also, in the portable electronic device 700, at a preset time,
The speaker 712 is configured to emit an alarm sound,
An alarm or a clock with an alarm can be realized. Further, in the portable electronic device 700, the speaker 712 can be configured to emit an alarm sound when a preset time elapses, so that a timer or a clock with a timer can be realized. (8) Structure of Another Embodiment of Timepiece with Thermoelectric Generation Unit of the Present Invention Referring to FIG. 53, in another embodiment of a timepiece with the thermoelectric generation unit of the present invention, the back cover 226 has an outer peripheral surface. A portion 226a and a central recess 226b are included. The outer peripheral flat portion 226a is fixed to the lower trunk 224. The central concave portion 226b is formed so as to be disposed closer to the movement 204 than the outer peripheral flat portion 226a. The central concave portion 226b is preferably formed by drawing.

The heat conductive spacer 320 is arranged such that one surface thereof is in contact with the first heat transfer plate 120 of the thermoelectric generator unit 180 and the other surface thereof is in contact with the inner side surface of the central concave portion 226 b of the back cover 226. I have. When the timepiece equipped with the thermoelectric generation unit of the present invention is worn on the wrist, the outer surface of the central concave portion 226b of the back cover 226 contacts the arm, and heat can be transmitted from the arm to the thermoelectric generation unit 180. With the configuration of the timepiece shown in FIG. 53, the back cover 226 and the movement 204
Can be greater than the distance between the central recess 226 b of the back lid 226 and the movement 204. Therefore, the heat insulation efficiency between the back cover 226 and the movement 204 can be increased, and the power generation efficiency of the thermoelectric generator unit 180 can be increased.

Referring to FIG. 54, in still another embodiment of the timepiece provided with the thermoelectric generation unit of the present invention, a back cover 226 has an outer peripheral flat portion 226c and a central convex portion 226.
d. The outer peripheral flat portion 226c is fixed to the lower trunk 224. The central convex portion 226d is formed on the outer peripheral flat portion 226c.
It is formed so as to be located farther from the movement 204. The central convex portion 226d is preferably formed by drawing. The heat conductor 244 is provided on the outer peripheral support portion 24.
4a and a central contact portion 244b. The outer peripheral support portion 244a is fixed to the upper trunk 220. Central contact part 24
4b is the movement 204 from the outer peripheral support portion 244a.
It is formed so as to be located far from the camera. The center contact portion 244b is preferably formed by drawing. The central contact portion 244b of the heat conductor 244 contacts the second heat transfer plate 170 of the thermoelectric generator unit 180.

The heat conductive spacer 320 is arranged such that one surface thereof is in contact with the first heat transfer plate 120 of the thermoelectric generator unit 180 and the other surface is in contact with the inner surface of the central convex portion 226d of the back cover 226. I have. When the timepiece provided with the thermoelectric generation unit of the present invention is attached to the wrist, the outer surface of the central convex portion 226d of the back cover 226 contacts the arm, and heat can be transmitted from the arm to the thermoelectric generation unit 180. With the configuration of the timepiece shown in FIG.
Can be greater than between the central convex portion 226 d of the back cover 226 and the movement 204. In other words, the thickness of the air layer existing between the component forming the driving portion of the timepiece and the back cover 226 is different from the component forming the driving portion of the timepiece included in the movement 204 and the first portion of the thermoelectric generation unit 180. It is configured to be larger than between the heat transfer plate 120 and the central portion of the back cover 226 facing the heat transfer plate 120.

Therefore, with this configuration,
The heat insulation efficiency between the back lid 226 and the movement 204 can be increased, and the power generation efficiency of the thermoelectric generator unit 180 can be increased.

[0086]

According to the present invention, as described above, in a timepiece and a portable electronic device provided with a thermoelectric generator unit, the present invention has the following effects. (1) The watch and the portable electronic device are durable because the thermoelectric element is not likely to be broken. (2) The power generation efficiency of the thermal power generation unit is high.

[Brief description of the drawings]

FIG. 1 is a process diagram showing a process for manufacturing a thermoelectric generation unit used in an embodiment of a timepiece including a thermoelectric generation unit of the present invention.

FIG. 2 is a plan view of a first heat transfer plate of the thermoelectric generation unit used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.

FIG. 3 is a sectional view of the first heat transfer plate taken along line 3A-3A in FIG. 2;

FIG. 4 is a plan view of a lead board of the thermoelectric generation unit used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.

FIG. 5 is a plan view showing a state in which a lead substrate is adhered to a first heat transfer plate in a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.

FIG. 6 is a cross-sectional view taken along line 6A-6A in FIG. 5, showing a state in which the lead substrate is bonded to a first heat transfer plate.

FIG. 7 is a schematic side view of a thermoelectric element of the thermoelectric generation unit used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.

FIG. 8 is a plan view of a thermoelectric element upper substrate of the thermoelectric generation unit used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.

FIG. 9 is a plan view of a thermoelectric element lower substrate of the thermoelectric generation unit used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.

FIG. 10 is a cross-sectional view of the thermoelectric element taken along line 10A-10A in FIG. 7;

FIG. 11 is a plan view showing a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention, in which a thermoelectric element is bonded to a first heat transfer plate.

FIG. 12 is a cross-sectional view taken along line 12A-12A of FIG. 11, showing a state where the thermoelectric element is bonded to a first heat transfer plate.

FIG. 13 shows a state in which a terminal pattern of a thermoelectric element and a lead pattern of a lead substrate are electrically connected by wire bonding in a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention. It is a top view.

FIG. 14 is a cross-sectional view showing a state where conduction between the terminal pattern of the thermoelectric element and the lead pattern of the lead substrate is established by wire bonding along line 14A-14A in FIG. 13;

FIG. 15 is a plan view of a unit frame of the thermoelectric generation unit used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.

FIG. 16 is a cross-sectional view of a unit frame of the thermoelectric generation unit used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.

FIG. 17 is a plan view showing a state in which a unit frame is fixed to a first heat transfer plate in a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.

FIG. 18 is a plan view of a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.

FIG. 19 is a sectional view of a thermoelectric generation unit used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.

FIG. 20 is a sectional view of an embodiment of a timepiece body of a timepiece including the thermoelectric generator unit of the present invention.

FIG. 21 is a rear plan view of the embodiment of the timepiece body of the timepiece including the thermoelectric generation unit of the present invention, as seen from the back cover side with the back cover and the crown removed.

FIG. 22 is a rear plan view of the power generation block used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention, as viewed from the back cover side.

FIG. 23 is an enlarged partial rear plan view (part 1) of a power generation block used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention, as viewed from the back cover side.

FIG. 24 is an enlarged partial rear plan view (part 2) of the power generation block used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention, as viewed from the back cover side.

FIG. 25 is an enlarged partial rear plan view (part 3) of the power generation block used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention, as viewed from the back cover side.

FIG. 26 is an enlarged partial rear plan view (part 4) of a power generation block used in the embodiment of the timepiece including the thermoelectric generation unit of the present invention, as viewed from the back cover side.

FIG. 27 is a partial cross-sectional view (part 1) of a power generation block used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.

FIG. 28 is a partial cross-sectional view (part 2) of a power generation block used in an embodiment of a timepiece including a thermoelectric generation unit of the present invention.

FIG. 29 is a plan view of a heat conductor included in a power generation block used in an embodiment of a timepiece including the thermoelectric generation unit of the present invention.

FIG. 30 is a plan view of a circuit insulating plate included in a power generation block used in an embodiment of a timepiece including a thermoelectric generation unit of the present invention.

FIG. 31 is a plan view of a power generation block frame included in a power generation block used in an embodiment of a timepiece including a thermoelectric generation unit of the present invention.

FIG. 32 is a plan view of a booster circuit block included in a power generation block used in an embodiment of a timepiece including a thermoelectric generation unit of the present invention.

FIG. 33 is an enlarged partial cross-sectional view showing the electrical connection between the circuit block of the movement and the booster circuit block in the embodiment of the timepiece including the thermoelectric generator unit of the present invention.

FIG. 34 is a front view of a circuit lead terminal used for electrical connection between the circuit block of the movement and the booster circuit block in the embodiment of the timepiece including the thermoelectric generator unit of the present invention.

FIG. 35 is a view showing an embodiment of a timepiece including a thermoelectric generation unit according to the present invention, in which a pattern of a circuit block of a movement provided for electrical connection with a booster circuit block is arranged so as to be in contact with the pattern; FIG. 2 is an enlarged partial plan view of a circuit lead terminal shown in FIG.

FIG. 36 is an enlarged partial cross-sectional view of the electrical connection between the thermoelectric generation unit and the booster circuit block in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.

FIG. 37 is an enlarged partial cross-sectional view showing a portion where the heat conductor is fixed to the upper body in the embodiment of the timepiece including the thermoelectric generator unit of the present invention.

FIG. 38 is an enlarged partial cross-sectional view showing a back cover, a heat conductive spacer, and a part of the thermoelectric generation unit in the embodiment of the timepiece including the thermoelectric generation unit of the present invention.

FIG. 39 is a plan view of a heat conductive spacer used in an embodiment of a timepiece including the thermoelectric generator unit of the present invention.

FIG. 40 is an enlarged partial cross-sectional view showing a part of the timepiece provided with the thermoelectric generator unit of the present invention, in which the back cover is fixed to the lower body.

FIG. 41 is a plan view of a timepiece movement equipped with the thermoelectric generation unit according to an embodiment of the present invention, as viewed from the back cover side.

FIG. 42 is a schematic block diagram showing a driving part and a wheel train in an embodiment of a timepiece including a thermoelectric generator unit of the present invention.

FIG. 43 is a schematic block diagram showing a configuration of a circuit in an embodiment of a timepiece including a thermoelectric generator unit of the present invention.

FIG. 44 is a schematic block diagram illustrating a configuration of a booster circuit in an embodiment of a timepiece including a thermoelectric generator unit of the present invention.

FIG. 45 is a circuit diagram showing a configuration of an oscillation circuit used in a booster circuit in an embodiment of a timepiece including a thermoelectric generation unit of the present invention.

FIG. 46 is a circuit diagram showing a configuration of a first booster circuit in an embodiment of a timepiece including a thermoelectric generator unit of the present invention.

FIG. 47 is a circuit diagram showing a configuration of a second booster circuit in an embodiment of a timepiece including a thermoelectric generator unit of the present invention.

FIG. 48 is a circuit diagram showing a configuration of a third booster circuit in an embodiment of a timepiece including a thermoelectric generator unit of the present invention.

FIG. 49 is a circuit diagram showing a configuration of a fourth booster circuit in an embodiment of a timepiece including a thermoelectric generator unit of the present invention.

FIG. 50 is a schematic block diagram showing the principle of thermoelectric generation in the embodiment of the timepiece provided with the thermoelectric generation unit of the present invention.

FIG. 51 is a cross-sectional view illustrating an embodiment of a portable electronic device including the thermoelectric generator unit of the present invention.

FIG. 52 is a schematic block diagram of an embodiment of a portable electronic device including the thermoelectric generation unit of the present invention.

FIG. 53 is a cross-sectional view of another embodiment of a timepiece body of a timepiece including the thermoelectric generator unit of the present invention.

FIG. 54 is a cross-sectional view of still another embodiment of a timepiece body of a timepiece including the thermoelectric generator unit of the present invention.

[Explanation of symbols]

 120 1st heat transfer plate 120a Lead board base part 120b1 Lead board mounting guide hole 120b2 Processing guide hole 120d1 to 120d10 Thermoelectric element base part 130 Lead board 130a1 to 130a9 Lead pattern 130b1, 130b2 Mounting guide hole 130b3, 130b4 Assembly guide hole 130t1, 130t2 Output terminal pattern 140 Thermoelectric element 142 Upper thermoelectric element board 142a Conducting pattern 144 Lower thermoelectric element board 144a Conducting pattern 144b1, 144b2 Terminal pattern 146 P-type semiconductor 148 N-type semiconductor 150 Wire bonding 160 Unit frame 160d Lower mounting part 160e Upper Attachment part 170 Second heat transfer plate 172 Silicone grease 180 Thermal power generation unit 200 Clock body 202 Outer case 204 Move Ment 206 Power generation block 208 Dial 210 Pointer 212 Center frame 214 Crown 216 Boost circuit lead terminal 220 Upper body 222 Decorative edge 224 Lower body 226 Back cover 228 Glass 240 Boost circuit block 242 Circuit insulating plate 244 Heat conductor 246 Power generation block frame 250 Step-up circuit board 252 Step-up integrated circuit 260 Capacitor 262 Tantalum capacitor 264 Diode 290 Thermal power generation unit lead terminal set screw 291 Lead substrate holding plate 292 Thermal conductor set screw 310 Power generation block set screw 320 Thermal conductive spacer 350 Circuit block 372 Back cover set screw 374 Pakkin 376 Pakkin 410 Booster circuit 412 Oscillator circuit 414 Schottky diode 416 Power supply operation control circuit 418 Clock drive circuit 420 Storage Electrical member 430 First booster circuit 432 Second booster circuit 434 Third booster circuit 436 Fourth booster circuit 438 Inverter circuit 440 Smoothing capacitor 442 Smoothing capacitor 444 Smoothing capacitor 452 Boosted voltage output terminal 600 Secondary battery 602 Quartz oscillator 610 Coil block 612 Stator 614 Rotor 616 Fifth wheel 618 Fourth wheel 620 Third wheel 622 Second wheel 624 Date wheel 626 Hour wheel 630 Clock drive integrated circuit 632 Winding reel 640 Second hand 642 Minute hand 646 Hour hand 650 Arm 652 Outside air 700 Portable Electronic equipment 710 Liquid crystal panel 712 Speaker 718 Lamp 720 Drive control circuit 730 Display control circuit 732 Speaker control circuit 738 Lamp control circuit 740 First button 742 Second button 744 Third button 746 Fourth button 750 first switch terminal 752 second switch terminal 754 third switch terminal 756 fourth switch terminal

[Procedure amendment]

[Submission date] August 12, 1999 (1999.8.1)
2)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] Claim 6

[Correction method] Change

[Correction contents]

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] Claim 7

[Correction method] Change

[Correction contents]

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] Claim 8

[Correction method] Change

[Correction contents]

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction contents]

[0008] A power supply operation control circuit is provided for storing the electromotive force generated by the thermoelectric generator unit in the power storage member. The thermally conductive spacer is made of a thermally conductive and compressible sheet material. The heat conductive spacer is disposed so as to contact the first heat transfer plate of the thermoelectric generator unit and the inner surface of the back cover. The heat conductive spacer is arranged such that one surface thereof contacts the first heat transfer plate of the thermoelectric generator unit and the other surface contacts the inner surface of the back cover. A heat insulating member having heat insulating property is provided, and the heat insulating member is configured to insulate the back cover and the upper trunk. In the timepiece of the present invention, the heat conductive spacer is preferably made of a silicone rubber sheet. With this configuration, it is possible to realize a timepiece with good power generation efficiency of the thermoelectric generator unit, regardless of the tolerance of the components that make up the timepiece.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

With this configuration, it is possible to realize a timepiece having a high power generation efficiency of the thermoelectric power generation unit.
Further, the present invention provides a timepiece provided with a thermoelectric generator unit, wherein a first heat transfer plate forming a heat absorbing plate, a thermoelectric element generating an electromotive force by a Seebeck effect, and a second heat transfer plate forming a heat sink. A back cover made of a thermally conductive material, a back cover made of a thermally conductive and compressible sheet material, and one side of the first surface of the thermoelectric generation unit. A heat conductive spacer arranged so as to be in contact with the heat transfer plate and the other surface to be in contact with the inner surface of the back cover; and a heat conductor arranged so as to conduct heat with the second heat transfer plate, An upper body arranged so as to be able to conduct heat with a heat conductor, a power source of a timepiece, a power storage member for storing electromotive force generated by a thermoelectric power generation unit, and a power storage member, or Operate by the electromotive force generated by the unit, It was configured with a display element for displaying information about between.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

Further, the present invention provides a portable electronic device provided with a thermoelectric generator unit, wherein a first heat transfer plate constituting a heat absorbing plate, a thermoelectric element generating an electromotive force by a Seebeck effect, and a radiating plate. A thermoelectric generator unit including a second heat transfer plate; a back lid made of a thermally conductive material; a thermally conductive and compressible sheet material; A heat conductive spacer arranged so as to be in contact with the first heat transfer plate of the thermoelectric generator unit and the other surface to be in contact with the inner surface of the back cover; and a heat conductive spacer arranged so as to conduct heat with the second heat transfer plate. A heat conductor, an upper body arranged so as to conduct heat with the heat conductor, and a power storage member for forming a power supply of the portable electronic device and storing an electromotive force generated by the thermoelectric generator unit. Generated by a power storage member or by a thermoelectric generator unit Operated by the electromotive force, and configured as a display member for displaying information about the time or time.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction contents]

Further, the present invention relates to a portable electronic device having a thermoelectric generation unit, wherein the thermoelectric generation unit includes a first heat transfer plate constituting a heat absorbing plate, a thermoelectric element for generating an electromotive force by a Seebeck effect, And a second heat transfer plate constituting a heat sink. The portable electronic device includes an outer case for housing components of the device including the thermoelectric generator unit. The outer case includes a heat absorbing member made of a heat conductive material, for example, a back cover, and a heat dissipating member made of a heat conductive material, for example, an upper body. Further, in this portable electronic device, a heat conductive spacer made of a heat conductive and compressible sheet material has one surface in contact with the first heat transfer plate of the thermoelectric generator unit and the other surface. Are arranged so as to contact the inner surface of the heat absorbing member, so that heat can be conducted from the heat absorbing member to the first heat transfer plate. In this portable electronic device, the heat conductive spacer is made of a heat conductive and elastically deformable material, for example, a silicone rubber sheet. The heat-conducting spacer is a sheet-shaped component, and is compressed by the heat-absorbing member and the first heat transfer plate, so that heat can be reliably transmitted from the heat-absorbing member to the first heat transfer plate.

[Procedure amendment 10]

[Document name to be amended] Drawing

[Correction target item name] FIG.

[Correction method] Change

[Correction contents]

FIG. 48

[Procedure amendment 11]

[Document name to be amended] Drawing

[Correction target item name] Fig. 49

[Correction method] Change

[Correction contents]

FIG. 49

Continued on the front page (72) Inventor Akihiro Matoge 1-8-8 Nakase, Mihama-ku, Chiba-shi, Chiba Inside Seiko Instruments Inc. (72) Inventor Yoshifumi Yoshida 1-8-8 Nakase, Mihama-ku, Chiba-shi, Chiba (72) Inventor Fumiyasu Utsunomiya 1-8-8 Nakase, Mihama-ku, Chiba-shi, Chiba Co., Ltd. Inside SIIR-D Center (72) Inventor Matsuo Kishi Mihama-ku, Chiba-shi 1-8 Nakase FSI Term (Reference) 2F002 AA00 AB02 AB06 AC04 AE00 AE01 EA01 EA02 EB01 EC00 ED02 GB00 GC00 2F084 AA00 BB04 CC03 EE06 EE08 GG02 JJ02 JJ07 LL01LL03

Claims (8)

[Claims] 1. A chargeable power storage member (420) constituting a power supply for operating a timepiece, and a timepiece driven to operate by the power storage member (420). A clock driving circuit (418), and a display member (21) for displaying time-related information based on a signal output from the clock driving circuit (418).
0), an upper body (220) made of a thermally conductive material, and a back lid (226) made of a thermally conductive material.
And a first heat transfer plate (120) that houses one or more thermoelectric elements (140) that generate an electromotive force based on the Seebeck effect, and that forms a heat absorbing plate, forms a heat sink, and A thermoelectric generation unit (180) including a second heat transfer plate (170) configured to be capable of transmitting heat to the body (220); and an electromotive force generated by the thermoelectric generation unit (180). 420), a power operation control circuit (416) for storing electricity, a first heat transfer plate (120) of the thermoelectric power generation unit (180), and the back cover (2).
26) a heat-conducting spacer (320) arranged to be in contact with the inner side surface; and a heat-insulating member (224) for heat-insulating the back lid (226) and the upper trunk (220). A watch characterized by being. 2. The heat conductive spacer (320) is made of a silicone rubber sheet, one surface of which is in contact with the first heat transfer plate (120) of the thermoelectric generator unit (180), and the other surface of which is in contact with the first heat transfer plate (120). The timepiece according to claim 1, wherein the timepiece is arranged to contact an inner surface of the case back (226). 3. The timepiece drive circuit (418) can be operated by the power storage member (420), and
3. The timepiece according to claim 1, wherein the timepiece is configured to be able to operate directly by an electromotive force generated by the thermoelectric generation unit. 4. 4. The second of said thermoelectric generation unit (180)
A heat conductor (24) configured to contact the heat transfer plate and to transfer heat from the second heat transfer plate (170).
4), wherein the thermal conductor (244) is provided with the upper body (22).
The timepiece according to any one of claims 1 to 3, wherein the timepiece is configured to be capable of transmitting heat to the timepiece (0). 5. The thickness of an air layer existing between a component forming a driving portion of the timepiece and the back cover (226) is determined by a component forming a driving portion of the timepiece and the thermoelectric generator unit (180). 5) is configured to be larger than a gap between the first heat transfer plate (120) and a central portion of the back lid (226) opposed to the first heat transfer plate (120). The clock described in. 6. A timepiece including a thermoelectric generator unit, wherein a first heat transfer plate (120) forming a heat absorbing plate, a thermoelectric element (140) generating electromotive force by a Seebeck effect, and a second heat forming plate forming a heat sink. A thermoelectric generator unit (180) including two heat transfer plates (170); and a back lid (226) made of a thermally conductive material.
A heat conductive spacer (320) made of a thermally conductive material and arranged to conduct heat with the back lid and the first heat transfer plate (120); A heat conductor (244) arranged so as to conduct heat with the plate; an upper body (220) arranged so as to conduct heat with the heat conductor (244); And a power storage member (420) for storing the electromotive force generated by the thermoelectric generation unit, and an operation performed by the electromotive force generated by the thermoelectric generation unit (180) by the power storage member (420),
A display member (210) for displaying information on time or time. 7. A portable electronic device having a thermoelectric generator unit, comprising: a first heat transfer plate (120) constituting a heat absorbing plate; a thermoelectric element (140) for generating electromotive force by a Seebeck effect; A thermoelectric generation unit (180) including a second heat transfer plate (170) to be constituted; and a back lid (226) made of a thermally conductive material.
And made of a heat conductive material, and the back lid (22)
6) and a heat conductive spacer (320) arranged to conduct heat with the first heat transfer plate; and a heat conductor arranged to conduct heat with the second heat transfer plate (170). (244), an upper body (220) arranged to conduct heat with the heat conductor (244), and a power source of a portable electronic device, which is generated by the thermoelectric generator unit (180). Operating by an electricity storage member (420) for storing electromotive force, and by the electromotive force generated by the electricity storage member (420) or the thermoelectric generator unit (180),
A display member (710) for displaying information about time or time. 8. A portable electronic device having a thermoelectric generation unit, wherein the thermoelectric generation unit (180) includes a first heat transfer plate (120) constituting a heat absorption plate, and a thermoelectric element for generating an electromotive force by a Seebeck effect. (140) and a second heat transfer plate (170) constituting a heat sink, wherein the portable electronic device includes an outer case for housing components of the device including the thermoelectric generator unit (180). The outer case includes a heat absorbing member (226) made of a thermally conductive material, and a heat dissipation member (220) made of a thermally conductive material. A heat conductive spacer (320) made of an elastically deformable material is disposed so as to conduct heat with the heat absorbing member (226) and the first heat transfer plate (120), and the second heat transfer The plate (170) is provided with the heat dissipating member (22).
A portable electronic device configured to conduct heat to 0).