CN2759381Y

CN2759381Y - Improved ear thermometer

Info

Publication number: CN2759381Y
Application number: CN 200420116627
Authority: CN
Inventors: 陈坤松; 林瑛钊; 欧阳兴; 欧阳瑶; 陈俊男; 萧静勤; 黄弘昌; 邱丞璘
Original assignee: HAOZHAN MEDICAL TECH Co Ltd
Current assignee: HAOZHAN MEDICAL TECH Co Ltd; Avita Corp
Priority date: 2004-12-10
Filing date: 2004-12-10
Publication date: 2006-02-22
Anticipated expiration: 2014-12-10

Abstract

The utility model relates to an improved ear thermometer, which improves aiming at a detecting head of an infrared ear thermometer. The detecting head protrudes from a main body of the ear thermometer. The utility model comprises a casing, a sensor and a plastic sleeve pipe, wherein the sensor is arranged inside the casing; the plastic sleeve pipe is arranged between the sensor and the casing; the sensor is positioned inside the casing; within the range of the front end of the detecting head, which is entered by infrared radiation, is formed into a permeable part without any object which is not to be detected. Thereby, the sensor can measure the most real heat radiated by an object to be detected and the utility model reduces or prevent as far as possible a distortion or an error caused by the sensor which detects an object other than the object to be detected.

Description

The ear thermometer of improvement

Technical field

This utility model relates to a kind of ear thermometer of improvement, especially the pick off that refers to a kind of infrared temperature measuring device, this pick off can measure the radiating heat of the most real determinand, reduce as much as possible or avoid sensor measurement beyond the determinand object and cause distortion or error.

Background technology

Known contact tehermometer, can not satisfy the demand of user as hydrargyrum formula or electronic type thermometer, so the dealer further pursues accurately and fast invariably, measures easily, interpretation easily, tool injury and more meet the thermometry and the device of hommization.Utilize at present the non-contact type temperature measurement devices of measuring infrared radiation just having above-mentioned advantage, thereby come into one's own gradually and being developed successively.

As shown in Figure 1, it is one outstanding and can insert the detecting head 1 of human body external auditory meatus from the ear thermometer body that known infrared ear temp gun is provided with, this detecting head 1 has a housing 11, be provided with a pick off (Sensor) 12 and the conduction of heat that will accept from external auditory meatus or tympanum etc. waveguide pipe (copper pipe) 13 in this housing 11 to infrared ray sensor 12, this pick off 12 places waveguide pipe 13 rears, can utilize waveguide pipe 13 that infrared ray is conducted to pick off 12, just the temperature survey of determinand can be come out.

The inwall of above-mentioned waveguide pipe 13 need be near 100% to ultrared reflectance, and reaching needs near 0 ultrared absorbance, otherwise can produce the accumulated temperature phenomenon.So-called " accumulated temperature phenomenon " is meant that waveguide pipe 13 because of absorbing infrared ray, causes body temperature to rise, and pick off 12 is produced secondary radiation again, makes the energy that detects secondary radiation that pick off 12 is extra, the therefore temperature drift of measuring.

Therefore, another kind of known infrared ear temp gun arises at the historic moment, as shown in Figure 2, in the housing 21 of its detecting head 2, dispose a pick off 22, this pick off 22 has a critesistor and a thermoelectric pile (comprising a plurality of thermocouple) is formed dual sensor, in order to the temperature of sensing one determinand, this pick off 22 places and can directly detect the thermal-radiating position of this determinand, needs between this determinand and this pick off 22 waveguide pipe to be set and conducts so as to saving.In addition, in order to completely cut off the conduction of heat that temperature difference caused of 21 of pick off 22 and detecting head housings, in this pick off 22 and 21 of detecting head housings a metallic insulation radiating part 23 is set, it is that the good metal material of heat conductivity is made, heat can be conducted to the rear, in order to postpone the influence that ambient temperature is floated and produced, produce the error of temperature measuring because of the influence of detecting head 2 when measuring temperature to reduce.

Above-mentioned metallic insulation radiating part 23 is made with metal material, and metallic insulation radiating part 23 protrudes in pick off 22 front ends, so pick off 22 can detect metallic insulation radiating part 23, and detects the rub-out signal of secondary radiation.

Obviously, the pick off of the device (ear thermometer) that above-mentioned two kinds of known infrared temperatures are measured all can cause distortion or error because of measuring determinand object (as waveguide pipe, metallic insulation radiating part) in addition.

As from the foregoing, above-mentioned known ear thermometer on reality is used, obviously has inconvenience and exists with defective, and can wait to be improved.

Summary of the invention

Main purpose of the present utility model is to provide a kind of ear thermometer of improvement, and its pick off energy measurement is to the radiating heat of the most real determinand, reduce as much as possible or avoid sensor measurement to determinand in addition object and cause distortion or error.

In order to achieve the above object, this utility model provides a kind of ear thermometer of improvement, is improved at the detecting head of infrared ear temp gun, and this detecting head is outstanding from the ear thermometer body, and this detecting head comprises: a housing, and its front end forms the opening shape; One pick off is arranged at this enclosure interior; And a plasticity sleeve pipe, it is arranged between this pick off and this housing, and this pick off is positioned enclosure interior; Form the hollow part of no any non-determinand in the scope that the infrared radiation of above-mentioned detecting head front end enters.

According to above-mentioned conception, wherein this pick off has a substrate, and this substrate is provided with the thermoelectric pile that a critesistor and is composed in series by a plurality of thermocouple, forms a kind of dual sensor, and this sensor front end is provided with an infrared ray filter.

According to above-mentioned conception, wherein this plasticity sleeve pipe is to make with elastomeric material.

According to above-mentioned conception, wherein this plasticity sleeve pipe is to make with silica gel material.

According to above-mentioned conception, wherein be provided with support member in this housing, this support member is replaced this plasticity sleeve pipe rear end, to oppress this plasticity sleeve pipe.

Whereby, the pick off energy measurement is to the radiating heat of the most real determinand, reduce as much as possible or avoid sensor measurement to determinand in addition object and cause distortion or error.

Description of drawings

Fig. 1 is the cutaway view of known infrared ear temp gun detecting head.

Fig. 2 is the cutaway view of another kind of known infrared ear temp gun detecting head.

Fig. 3 is the cutaway view of this utility model ear thermometer detecting head.

Fig. 4 is the A part detail drawing of Fig. 3.

Wherein, description of reference numerals is as follows:

1 detecting head, 11 housings

12 pick offs, 13 waveguide pipe

2 detecting heads, 21 housings

22 pick offs, 23 metallic insulation radiating parts

3 detecting heads, 31 housings

32 pick offs, 321 substrates

322 critesistor, 323 thermoelectric piles

324 infrared ray filters, 33 plasticity sleeve pipes

34 first support members, 35 second support members

36 hollow parts

The specific embodiment

See also Fig. 3 and Fig. 4, this utility model provides a kind of ear thermometer structural improvement, especially refer to a kind of improvement of doing at the detecting head of infrared ear temp gun, this detecting head 3 is outstanding and can insert human body external auditory meatus from ear thermometer body (figure slightly), include a housing 31, a pick off 32 and 33 compositions of a plasticity sleeve pipe, wherein this housing 31 is that these housing 31 front ends also form the opening shape from the outstanding plastic hollow housing of ear thermometer body (figure slightly).

This pick off 32 is arranged at this housing 31 inside, this pick off 32 has a substrate 321, and be provided with the thermoelectric pile (Thermopile) 323 that a critesistor (Thermistor) 322 and is composed in series by a plurality of thermocouple (Thermocouple) in this substrate 321, form a kind of dual sensor whereby, these pick off 32 front ends are provided with an infrared ray filter 324.Can utilize the critesistor 322 of pick off 32 inside to record pick off 32 body temperatures, utilize the thermoelectric pile 323 of pick off 32 inside to record the infrared ray amount of temperature difference between measured object and the pick off 32 again, can record the temperature value of determinand according to this.This pick off 32 places the thermal-radiating position of energy this determinand of direct sensing, needs be provided with the usefulness that a waveguide pipe is done conduction so as to saving between this determinand and this pick off 32.

This plasticity sleeve pipe 33 is to make with plastic materials such as rubber or silica gel, this plasticity sleeve pipe 33 is sheathed on pick off 32 outsides, make this plasticity sleeve pipe 33 between pick off 32 and housing 31, utilize the elasticity that plasticity sleeve pipe 33 materials own are had can be in order to pick off 32 is positioned in the housing 31, and have waterproof effect.

In this housing 31, be provided with one first support member 34 and one second support member 35 in addition, this

support member

34,35 is fixed in this housing 31 inside, but and these first support member, 34 front end contact plasticity sleeve pipes, 33 rear ends, in order to oppress this plasticity sleeve pipe 33, make this plasticity sleeve pipe 33 have preferred positioning and waterproof effect, and in the scope that these detecting head 3 front end infrared radiation enter, form a hollow part 36; By above-mentioned composition to form ear thermometer of the present utility model.

As shown in Figure 4, this utility model is a centre line L with the vertical line of infrared ray sensor 32, then to present detectable angle be ∠ θ to the peripheral or perspective of infrared ray filter 324, can be during design without any other accessory of non-determinand in ∠ θ (about 45 degree) scope, the interior no any non-determinand of the scope that infrared radiation is entered.

This utility model does not need to be provided with known metallic insulation radiating part, only need to be provided with and be used for locating and the plasticity sleeve pipe 33 of waterproof, and form a hollow part 36 in the scope that these detecting head 3 front end infrared radiation enter, the interior no any non-determinand of the scope that infrared radiation is entered, so can make pick off 32 measure the radiating heat of the most real determinand, reduce as much as possible or avoid pick off 32 measure determinand in addition object and cause distortion or error.

The above, it only is preferable possible embodiments of the present utility model, non-ly limit claim of the present utility model,, all in like manner all be contained in the scope of the present utility model so the equivalent structure that all utilization this utility model description and accompanying drawing content are carried out changes with this.

Claims

1, a kind of ear thermometer of improvement, a detecting head is outstanding from the ear thermometer body, it is characterized in that this detecting head comprises:

One housing, its front end forms the opening shape;

One pick off is arranged at this enclosure interior; And

One plasticity sleeve pipe, it is arranged between this pick off and this housing, and this pick off is positioned enclosure interior;

Form the hollow part of no any non-determinand in the scope that the infrared radiation of above-mentioned detecting head front end enters.

2, the ear thermometer of improvement as claimed in claim 1, it is characterized in that this pick off has a substrate, this substrate is provided with the thermoelectric pile that a critesistor and is composed in series by a plurality of thermocouple, forms a kind of dual sensor, and this sensor front end is provided with an infrared ray filter.

3, the ear thermometer of improvement as claimed in claim 1 is characterized in that being provided with support member in this housing, and this support member is replaced this plasticity sleeve pipe rear end, and oppresses this plasticity sleeve pipe.