JPH0345155Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to an electronic thermometer, and in particular to the structure of a temperature measuring part that prevents unnecessary heat radiation and has high temperature measuring efficiency.

(Conventional example) As an electronic thermometer, as shown in FIG.
A device that measures body temperature by inserting it into the mouth A is widely used. This type of temperature measurement section 42
is a bottomed cylindrical case 4 made of a highly thermally conductive material such as aluminum or beryllium oxide.
A temperature measuring element 42 such as a temperature resistance element is installed inside 2a.
The circumferential body surface of the case 42a is placed in close contact with the underside of the tongue B, the skin surface of the axilla, etc., and the temperature is measured by capturing body heat from the circumferential body surface. There is. However, this kind of case 42a
has a shape that protrudes forward from the tip of the probe case 41, so as shown in the figure, the central portion 421 of its peripheral body surface tends to come into close contact with the surface to be measured such as the tongue B or the skin surface. portion 422 and base end portion 42
3 is difficult to adhere to, and the heat captured by the case 42a is transferred to the distal end 422 and proximal end 423 of the case 42a.
There was a problem in that the body temperature could escape outward from the surface of the body, making it take longer to measure the body temperature.

(Summary of the invention) The present invention was developed against the background of the above-mentioned circumstances, and the present invention prevents the heat captured by the thermometer from radiating unnecessary heat from the case of the thermometer, thereby dissipating the heat. The purpose of the present invention is to provide an electronic thermometer that can conduct heat efficiently to a temperature measuring element. To this end, the present invention houses a temperature measuring element inside a cylindrical case made of a highly thermally conductive material such as aluminum or beryllium oxide, and attaches a heat insulating material such as foamed resin to the tip of the cylindrical case. The temperature measuring part is formed by By attaching the heat insulating member to the tip of the temperature measuring section in this manner, unnecessary radiation of heat captured by the temperature measuring section from the tip is prevented.

(Example) Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 shows an electronic thermometer 1 according to the present invention, in which 2 is a main body case, and the main body case 2 includes a box-shaped base portion 2a and a tapered rod-like structure connected to the tip of the base portion 2a. It consists of a probe part case 2b. 3 is a body temperature display section, and 4 is a switch button. Reference numeral 5 denotes a temperature measuring section attached to the tip of the probe case 2b, and its detailed structure will be explained next with reference to FIG.

Reference numeral 7 denotes a cylindrical case of the temperature measuring unit 5, which is made of a material with good thermal conductivity such as aluminum or beryllium oxide, and a temperature measuring element 10 consisting of a temperature resistance element is housed inside the case. . 8,
Reference numeral 9 denotes a heat insulating member attached to the tip and base portion of the case 7, and is made of a material with low thermal conductivity such as foamed resin. 8a and 9a are protective films for the heat insulating members 8 and 9, which are formed by coating with a synthetic resin having low thermal conductivity, and prevent the heat insulating members 8 and 9 from absorbing water and becoming dirty. 11, 11 are lead wires connected to the temperature measuring element 10. 12 is a filling material made of a highly thermally conductive material filled inside the case 7,
Temperature measuring element 10 quickly detects body heat captured by case 7
conduct to. 13, 13 are partition membrane plates. The inside of the temperature measuring section 5 formed as described above is completely filled with the heat insulating members 8 and 9 and the filler 12, and there is no void, thereby preventing the generation of unnecessary heat convection around the temperature measuring element 10. Moreover, the strength of the temperature measuring section 5 is reinforced.

This electronic thermometer 1 consists of the above configuration,
To measure body temperature, as shown in FIG. 3, the thermometer 5 is inserted into the mouth A and brought into close contact with the underside of the tongue B, or with the skin surface of the axilla. Then, body heat is absorbed by the case 7 and transmitted to the temperature measuring element 10 through the filling material 12. In this case, the heat of the case 7 is hardly transmitted to the heat insulating members 8 and 9, which have low thermal conductivity, and is concentratedly transmitted to the temperature measuring element 10 through the filler material 12, which has high thermal conductivity, so that the heat is quickly transmitted. You can take your temperature.

By the way, when measuring temperature in this manner, the distal end and the proximal end of the temperature measuring section 5 are difficult to come into close contact with the tongue B, the skin surface of the axilla, etc., as described above, and therefore, the temperature measuring section 5 does not capture the temperature. The generated heat tends to be radiated unnecessarily from the surface of the distal end and the base end, but since the heat insulating members 8 and 9 are attached to the distal end and the base end of the thermometer 5, unnecessary heat radiation is suppressed as much as possible. It will be done. In this way, the thermometer 5 has only the parts that are in close contact with the tongue B and the skin of the axilla with the case 7, which has high thermal conductivity.
Since the tip and base portions that are difficult to come into close contact with are formed of the heat insulating members 8 and 9, unnecessary heat radiation can be prevented and the body temperature can be measured quickly. In addition, in this embodiment, since the case 7 is provided only in the portions excluding the distal end and the proximal end, the case 7 can be made as small as possible, and therefore the temperature will rise in a short period of time and the measurement It is possible to shorten the warm-up time. Furthermore, a heat insulating member 8 is provided at the tip of the temperature measuring section 5.
By wearing the thermometer 5, it is possible to prevent the distal end of the temperature measuring section 5 from being damaged due to contact with the instrument, etc., and also to improve the contact with the tongue B and the skin surface.

The present invention is not limited to the above-mentioned embodiments, and various design modifications are possible. Unnecessary heat dissipation is also small, so it is not necessarily necessary to provide the heat insulating member 9 on the proximal end side.

(Effect of the invention) As explained above, the electronic thermometer 1 according to the invention
The temperature measuring unit 5 attached to the tip of the probe case 2b is housed inside a cylindrical case 7 made of a material with high thermal conductivity, and the temperature measuring element 10 is housed in the tip of the cylindrical case 7. Since the heat insulating member 8 is attached, it is possible to prevent unnecessary heat radiation from the tip of the temperature measuring section 5, which is difficult to come into close contact with the tongue B or the skin surface, and to quickly measure body temperature. This can prevent the tip from being damaged by hitting objects, etc.

[Brief explanation of drawings]

The figure shows an embodiment of the present invention.
The figure is a perspective view of an electronic thermometer, FIG. 2 is a sectional view of the temperature measuring section, FIG. 3 is a side view during temperature measurement, and FIG. 4 is a side view of a conventional thermometer. DESCRIPTION OF SYMBOLS 1...Electronic thermometer, 2b...Probe unit case, 5...Temperature measuring unit, 7...Tylindrical case, 8...Insulating member, 10...Temperature measuring element.

Claims (1)

[Scope of utility model registration request] The temperature measuring unit 5 attached to the tip of the probe case 2b is housed in a cylindrical case 7 made of a material with high thermal conductivity, and the temperature measuring element 10 is housed inside the cylindrical case 7. 8. An electronic thermometer characterized by being formed to be worn.