CN212158838U

CN212158838U - Infrared ear thermometer probe and infrared ear thermometer

Info

Publication number: CN212158838U
Application number: CN202021142872.9U
Authority: CN
Inventors: 侯广伟; 王迪; 刘钊; 王迪龙; 万龙; 吕春豪
Original assignee: Tianjin Jiu'an Medical Electronics Co ltd
Current assignee: Tianjin Jiu'an Medical Electronics Co ltd
Priority date: 2020-06-19
Filing date: 2020-06-19
Publication date: 2020-12-15
Anticipated expiration: 2030-06-19

Abstract

The utility model provides an infrared ear thermometer probe and infrared ear thermometer, infrared ear thermometer probe includes probe shell, probe cap, infrared sensor, PCB main control board, heating collar, the heating collar is fixed in the front end of probe cap through the heating collar support, infrared sensor passes through the light pipe and communicates with the radiation window, wherein, still be equipped with the sensor storehouse in the probe shell, the lower part in sensor storehouse has the first holding part that holds infrared sensor, makes infrared sensor keep away from the probe cap fixed; the upper end of the first accommodating part is connected with a second accommodating part in a penetrating way, the light guide pipe is arranged in the second accommodating part, and the front end of the light guide pipe extends out of the upper end surface of the second accommodating part; a first NTC and a second NTC are fixedly arranged in the heating ring bracket; in the heating process of the front end of the probe, the comfort of a tested person is guaranteed, meanwhile, the influence of thermal shock on an optical system and an infrared sensor can be effectively restrained, and the measurement accuracy is improved.

Description

Infrared ear thermometer probe and infrared ear thermometer

Technical Field

The utility model relates to an infrared ear thermometer technical field, in particular to infrared ear thermometer probe and infrared ear thermometer with heating function.

Background

Infrared ear thermometers have been widely used to measure the temperature of a human body, and when used to measure the ear temperature of a human body, the temperature of the probe portion is approximately equal to the ambient temperature in which it is located. In general, the living environment temperature of people is far lower than the normal body temperature, so the temperature of the ear thermometer probe is often lower than the temperature of the measured ear canal of the human body. When the ear temperature is measured, the probe of the ear thermometer is contacted with the auditory canal of a measured person to generate a heat conduction effect, so that the temperature of the auditory canal of the measured part of the measured person is impacted by low temperature to cause measurement errors; therefore, in the conventional ear thermometer, the heating element is arranged in the probe, so that the front end of the probe is heated to the temperature which is substantially the same as the temperature of the ear canal, but the problem caused by the heating element is that an optical system of the probe of the ear thermometer is easily subjected to high-temperature impact to generate temperature gradient change, new interference is generated, and finally the measurement result is deviated.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the above-mentioned defect that known technology exists, and provides an infrared ear thermometer probe for in the probe front end heating process, when guaranteeing to measure person's comfort, can effectively restrain the influence of thermal shock to optical system and infrared sensor, improve measurement accuracy.

The utility model is realized by the following technical scheme, according to the utility model provides an infrared ear thermometer probe, including probe shell, probe cap, infrared sensor, PCB main control board, heating collar, the heating collar is fixed in the front end of probe cap through the heating collar support, the infrared sensor communicates with the outside through the light pipe, wherein, still be equipped with the sensor storehouse in the probe shell, the lower part of sensor storehouse has the first holding part that holds the infrared sensor, makes infrared sensor keep away from the probe cap fixed; the upper end of the first accommodating part is connected with a second accommodating part in a penetrating way, the light guide pipe is arranged in the second accommodating part, and the front end of the light guide pipe extends out of the upper end surface of the second accommodating part; a first NTC and a second NTC are fixedly arranged in the heating ring bracket, the first NTC is fixed at one side close to the probe cap, and the second NTC is fixed at one side close to the light guide pipe; the infrared sensor, the first NTC and the second NTC are respectively and electrically connected with the PCB main control board.

Keep away from the probe cap behind infrared sensor parcel fixed through setting up the sensor storehouse, can effectively avoid heating the influence of circle thermal shock to infrared sensor to improve measurement accuracy. Through setting up first NTC, second NTC, synchronous collection copper cap and near light pipe temperature when measuring the ear temperature to revise temperature data through the PCB main control board in real time, further improved the reliability and the accuracy that the ear thermometer measured.

The utility model discloses can also take following technical scheme to further realize:

preferably, in the probe for an infrared ear thermometer, the sensor chamber is composed of an upper casing and a lower casing, and the upper casing and the lower casing are connected by a fastener.

Preferably, in the probe of the infrared ear thermometer, the light guide bracket is sleeved at the front end of the light guide for heat insulation between the light guide and the heating ring.

Preferably, in the probe of the infrared ear thermometer, a light guide film sleeve is disposed at the front end of the light guide. It is possible to prevent the entry of foreign matter from causing measurement deviation.

Preferably, in the probe of the infrared ear thermometer, the light guide is a gold-plated light guide. Because the radiance of the gold-plated light guide pipe is very low, even if the thermal shock temperature of the heating ring fluctuates, the radiation fluctuation of the gold-plated light guide pipe is small, and therefore the influence on the measurement result is reduced.

Preferably, in the probe of the infrared ear thermometer, the probe cap is made of copper.

Further, aforementioned infrared ear thermometer probe, wherein, still include disposable earmuff, the probe shell is provided with the earmuff button for pop out disposable earmuff.

The utility model also provides an infrared ear thermometer, wherein, including ear thermometer body and above-mentioned infrared ear thermometer probe.

To sum up, compared with the prior art, the utility model discloses an infrared ear thermometer probe and infrared ear thermometer, at probe front end heating in-process, when guaranteeing to measure person's comfort, can effectively restrain the impact of thermal shock to optical system and infrared sensor, improve the measuring accuracy.

Drawings

FIG. 1 is a schematic view of the infrared ear thermometer probe of the present invention;

FIG. 2 is an assembly view of the probe of the infrared ear thermometer of the present invention;

FIG. 3 is a schematic view of a partial cross-sectional structure of the probe of the infrared ear thermometer of the present invention;

fig. 4 is a partially enlarged sectional view of the probe of the infrared ear thermometer of the present invention.

Detailed Description

The structure, features and effects of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments:

as shown in fig. 1 to 4, the utility model provides an infrared ear thermometer probe, including probe shell 1, probe cap 2, infrared sensor 3, PCB main control board 4, heating ring 5 is fixed at the front end of probe cap through heating ring support 6, infrared sensor 3 communicates with the outside through light pipe 7, wherein, still be equipped with the sensor storehouse in probe shell 1, the lower part of sensor storehouse has the first holding part 81 that holds infrared sensor for infrared sensor keeps away from the probe cap and fixes; the upper end of the first accommodating part is connected with a second accommodating part 82 in a penetrating way, the light guide pipe is arranged in the second accommodating part, and the front end of the light guide pipe extends out of the upper end surface of the second accommodating part; a first NTC51 and a second NTC52 are fixedly arranged in the heating ring bracket 5, the first NTC is fixed close to one side of the probe cap 2, and the second NTC is fixed close to one side of the light guide pipe 6; the infrared sensor 3, the first NTC51 and the second NTC52 are respectively and electrically connected with the PCB main control board 4. Preferably, the probe cap is made of copper or other materials with good heat transfer performance, such as red copper. Preferably, the sensor cartridge is shaped to conform to the shape of the probe housing.

This embodiment can be further realized by the following structure:

for ease of assembly, the sensor cartridge is comprised of an upper housing 83 and a lower housing 84, which are connected by fasteners, such as screws, etc. Preferably, the PCB main control board 4 is also disposed in the second accommodating portion 82.

Further, in the probe of the infrared ear thermometer, the light guide tube support 71 is sleeved at the front end of the light guide tube 7, and is used for heat insulation between the light guide tube and the heating ring, and the lower end face of the light guide tube support abuts against the upper end face of the second accommodating part. Preferably, the light guide pipe is a gold-plated light guide pipe. Because the radiance of the gold-plated light guide pipe is very low, even if the thermal shock temperature of the heating ring fluctuates, the radiation fluctuation of the gold-plated light guide pipe is small, and therefore the influence on the measurement result is reduced.

Preferably, in the probe of the infrared ear thermometer, the front end of the light pipe 7 is provided with a light pipe film cover 72, so that a measurement deviation caused by the entry of a foreign object can be prevented.

Preferably, the infrared ear thermometer probe is sleeved with a disposable ear cap 9, and the probe shell 1 is provided with an ear cap button 11 for ejecting the disposable ear cap.

During assembly, after the first NTC51 and the second NTC50 are fixed on the heating ring support 5, the front side and the back side of the heating ring can be tightly fixed with the probe cap 2 and the heating ring support 5 through 3M double-sided adhesive tapes, and a jig is used for pressing to ensure good contact to form a heating ring semi-finished product; the heating ring semi-finished product and the probe shell are tightly fixed by AB glue, and the heating ring, the NTC and the probe cap can be well contacted by fixing the clamp.

The light pipe 7 is arranged in the upper shell 83 of the sensor bin, sleeved with the light pipe film sleeve 72 and then matched and fixed by the light pipe bracket 71; after the probe shell is integrally installed, the earcap button 11, the infrared sensor 3, the PCB main control board 4 and the lower shell 84 of the sensor cabin are sequentially placed in the probe shell and are connected through screws after being assembled.

The utility model also provides an infrared ear thermometer, wherein, including ear thermometer body (not shown) and the aforesaid infrared ear thermometer probe.

The aforesaid is only the preferred embodiment of the utility model discloses a everything is according to the utility model discloses a technical scheme all belongs to the scope of the utility model protection to any simple modification and the transform of equivalence that the above embodiment goes on.

Claims

1. An infrared ear thermometer probe comprises a probe shell, a probe cap, an infrared sensor, a PCB (printed circuit board) main control board and a heating ring, wherein the heating ring is fixed at the front end of the probe cap through a heating ring bracket; the upper end of the first accommodating part is connected with a second accommodating part in a penetrating way, the light guide pipe is arranged in the second accommodating part, and the front end of the light guide pipe extends out of the upper end surface of the second accommodating part; a first NTC and a second NTC are fixedly arranged in the heating ring bracket, the first NTC is fixed at one side close to the probe cap, and the second NTC is fixed at one side close to the light guide pipe; the infrared sensor, the first NTC and the second NTC are respectively and electrically connected with the PCB main control board.

2. The infrared ear thermometer probe of claim 1 wherein said sensor cartridge is comprised of an upper housing and a lower housing, said upper housing and said lower housing being connected by a fastener.

3. The infrared ear thermometer probe of claim 1, wherein said light pipe front end is jacketed with a light pipe holder for heat insulation of the light pipe from the heating coil.

4. The infrared ear thermometer probe of claim 1 wherein the front end of said light pipe is provided with a light pipe film sleeve.

5. The infrared ear thermometer probe of claim 1 wherein said light pipe is a gold-plated light pipe.

6. The infrared ear thermometer probe of claim 1, wherein said probe cap is copper.

7. An infrared ear thermometer probe as claimed in any one of claims 1 to 6 further comprising a disposable ear cap, said probe housing being provided with an ear cap button for ejecting the disposable ear cap.

8. An infrared ear thermometer, comprising an ear thermometer body and an infrared ear thermometer probe as claimed in any one of claims 1 to 7.