JPH0528992U - Wristwatch with thermometer - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a wristwatch with a thermometer that is relatively resistant to static electricity and has a temperature-sensitive plate with a design width to improve temperature measurement accuracy. [Arrangement] An insulating member is provided which covers the temperature sensing element temperature sensing portion except the temperature sensing plate side and which keeps the distance between the temperature sensing plate and the temperature sensing element sensing element to a certain value or more. A wristwatch with a thermometer, wherein the insulating member is made of a material having a thermal conductivity smaller than that of the temperature sensitive plate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the structure of a wristwatch with a thermometer.

[0002]

[Prior Art]

 FIG. 2 shows an example of the structure of a conventional wristwatch with a thermometer. In FIG. 2, reference numeral 1 denotes a thermistor which is a temperature detecting element for electrically sensing the temperature, and its temperature sensing portion 1-1 is brought into contact with the temperature sensing plate 2 made of aluminum incorporated in the outer case 4. There is. The outer case 4 is made of a plastic material to avoid the influence of body temperature. 3 is a waterproof packing. Reference numeral 5 is a circuit board on which circuit elements such as a temperature conversion circuit for converting an electric signal detected from the temperature sensing section 1-1 of the thermistor 1 into a temperature value are mounted. The terminal portion 1-2 of the thermistor 1 is connected to the circuit board 5 by soldering. 6 is a case back. Reference numeral 7 is an earth spring that grounds the static electricity that has entered the temperature sensitive plate to the back cover 6.

[0003]

[Problems to be solved by the device]

 A wristwatch with a thermometer can measure the temperature that is closely related to daily life anywhere, and by combining with the functions possessed by the watch, such as the function to notify with a buzzer that the set temperature matches the measured temperature, It is a convenient item.

However, when the wristwatch is worn on the wrist, the body temperature of the wristwatch is different from the temperature due to the influence of the body temperature. Therefore, in order to improve the temperature measurement accuracy when carrying the wristwatch as much as possible, the temperature sensing part 1-1 of the thermistor 1 is brought into close contact with the temperature sensing plate 2 as shown in FIG. 2 to detect the temperature outside the wristwatch. The structure is general.

In the case of the structure as shown in FIG. 2, when static electricity enters the temperature sensitive plate 2 from the outside, the temperature sensitive portion 1-1 of the thermistor 1 is in close contact with the temperature sensitive plate 2, so that the static electricity is generated by the thermistor. It will enter the watch module via 1 and lead to problems such as product damage and malfunction.

In order to prevent the problem of static electricity, the temperature sensing plate 2 is brought into contact with the ground spring 7 and the back cover 6 is grounded. In that case, however, there are the following problems.

(1) In order to color the temperature-sensitive plate 2 to have a design width, anodizing treatment may be performed. However, the alumite treatment causes the surface to be electrically insulated. I will end up. Therefore, an alumite treatment cannot be performed in order to electrically connect with the earth spring 7, which imposes a design restriction. Also, because of the design priority, if alumite treatment is applied, the product will be vulnerable to static electricity.

(2) Since the body temperature affects the temperature sensing section 1-1 of the thermistor 1 from the back cover 6 via the earth spring 7 and the temperature sensing plate 2, the temperature measurement accuracy is somewhat affected.

Therefore, the present invention solves the above-mentioned problems, and its purpose is to (1) to be relatively strong against static electricity, and (2) to perform alumite treatment on aluminum, which is a temperature-sensitive plate, Allowing a wide range of design (3) Improving temperature measurement accuracy We are providing a wristwatch with a thermometer.

[0010]

[Means for Solving the Problems]

 The wristwatch with a thermometer according to the present invention covers the surroundings of the temperature sensing element except the temperature sensing plate side, and keeps the distance between the temperature sensing plate made of aluminum and the temperature sensing part of the temperature sensing element above a certain level. A wristwatch with a thermometer, characterized in that an insulating member for keeping the temperature is arranged, and the insulating member is made of a material having a smaller thermal conductivity than the temperature sensitive plate.

[0011]

【Example】

 The present invention will be described according to examples.

FIG. 1 is a sectional view showing an embodiment of a wristwatch with a thermometer according to the present invention.

Hereinafter, the present invention will be described with reference to FIG.

In FIG. 1, the thermistor 1, the temperature sensitive plate 2, the waterproof packing 3, the outer case 4, the circuit board 5, and the back cover 6 are the same as those in the conventional example shown in FIG. An insulating member 8 covers the periphery of the temperature sensitive portion 1-1 of the thermistor 1 except for the temperature sensitive plate 2 side. Further, the insulating member 8 is formed and arranged so that the temperature sensitive part 1-1 of the thermistor 1 and the temperature sensitive plate 2 do not contact at the same time.

A material whose thermal conductivity of the insulating member 8 is smaller than that of the temperature sensitive plate 2 is selected.

As described above, since the distance between the temperature sensitive portion of the thermistor 1 and the temperature sensitive plate 2 is kept constant by the insulating member 8, the static electricity that has entered the temperature sensitive plate 2 is not shown in the conventional example. Compared to item 2, it is more difficult to enter the inside of the watch, so it is relatively strong against static electricity.

Further, as a result, since the earth spring 7 shown in FIG. 2 can be eliminated, the temperature-sensitive plate 2 made of aluminum can be anodized, and the temperature-sensitive plate 2 is colored. It becomes possible and it becomes possible to increase the degree of freedom in design.

Further, since the temperature sensitive portion 1-1 of the thermistor 1 is covered with an insulating member having a small thermal conductivity, the influence of body temperature via the case back is blocked. Although the distance between the temperature sensing part 1-1 of the thermistor 1 and the temperature sensing plate 2 is longer than that of the conventional example shown in FIG. 2, since the influence of the body temperature is blocked by the insulating member 8 as described above, The measurement accuracy is improved compared to the conventional example shown in FIG.

[0019]

As described above, according to the wristwatch with a thermometer according to the present invention, the temperature sensing element covers the periphery of the temperature sensing part except the temperature sensing plate side, and the temperature sensing plate and the temperature sensing element. The following effects can be obtained by arranging an insulating member made of a material having a smaller thermal conductivity than that of the temperature sensing plate, which keeps a distance from the temperature sensing portion to a certain value or more.

(1) Relatively strong against static electricity (2) Alumite treatment is applied to aluminum, which is a temperature-sensitive plate, to give it a design width (3) Improve temperature measurement accuracy Needless to say, it will improve the product value of the product.

[Brief description of drawings]

FIG. 1 is a sectional view of a wristwatch with a thermometer according to an embodiment of the present invention.

FIG. 2 is a sectional view of a conventional wristwatch with a thermometer.

[Explanation of symbols]

 1. Temperature detection element (thermistor) 1-1. Temperature sensing part 1-2. Terminal 2. Temperature plate 3. Waterproof packing 4. Outer case 5. Circuit board 6. Case back 7. Earth spring 8. Insulation member

Claims (1)

[Scope of utility model registration request] 1. A timepiece having at least a temperature detecting element such as a thermistor for electrically sensing the temperature and a circuit element such as a temperature converting circuit for converting an electric signal obtained from the temperature detecting element into a temperature value. In the wristwatch with a thermometer, which comprises a module, an outer case for housing the timepiece module, and a temperature sensing plate incorporated in the outer case and having a temperature sensing part of the temperature detecting element disposed therein. An insulating member that covers the periphery of the element temperature-sensitive portion except the temperature-sensitive plate side and that keeps the distance between the temperature-sensitive plate and the temperature-sensitive portion of the temperature detecting element to a certain value or more is provided, and the insulating member is A wristwatch with a thermometer, which is made of a material having a smaller thermal conductivity than the temperature sensitive plate.