BACKGROUND OF THE INVENTION

The present invention relates to the technical field of infrared thermometer, and more specifically relates to an infrared thermometer which is easy to be cleaned, and which can be embodied as an infrared ear thermometer or an infrared forehead thermometer.

Ear temperature can more accurately reflect the central temperature of a human body among various types of body temperature measurements because eardrum is adjacent to the hypothalamus inside the brain, and hypothalamus is a temperature control center of the human brain. Medical research found that body temperature indicated by ear temperature is more accurate than oral temperature and armpit temperature. As mentioned, since ear is the closest to the hypothalamus which controls body temperature, blood flow of the tympanic membrane of the ear has the same source as the hypothalamus, therefore the temperature inside the ear is the first to react to any change of body temperature, and so the ear temperature is the closest to the body temperature. Also, since the ear forms a closed cavity inside, ear temperature is less affected by external environment, as compared with other measurement sites (such as armpit). These characteristics of ear temperature make it possible to measure body temperature by measuring ear temperature. An infrared ear thermometer is an electronic thermometer that measures the body temperature of the human body through the ear canal, and can quickly display the body temperature. The infrared ear thermometer uses infrared sensor technology and software algorithms to measure and calculate temperature value.

In the market, a common infrared ear thermometer generally comprises an ear temperature probe, an ear temperature sleeve, a measurement button, a display, a power button, and a batter cover etc. Ear temperature is measured by inserting the ear temperature probe into the ear canal. However, a general and conventional ear temperature probe is recessed at the end that is inserted into the ear canal, dirt inside the ear canal may easily contaminate that end of the ear temperature probe during ear temperature measurement, and such contamination may not be easily found and cleaned. If the dirt is not cleaned for a prolonged period of time, the end of the ear temperature probe may be covered by dirt, thereby affecting the accuracy of temperature measurement.

BRIEF SUMMARY OF THE INVENTION

In view of the aforesaid disadvantages now present in the prior art, the present invention provides an infrared thermometer which is easy to be cleaned and which can be embodied as an infrared ear thermometer or an infrared forehead thermometer. By configuring the end of the ear temperature probe inserted into the canal as a flat surface via a silicon lens, dirt deposited therein can be easily found and cleaned, thereby maintaining the accuracy of temperature measurement of the infrared thermometer.

To fulfil the above objects, an infrared thermometer is provided, comprising an upper shell, a lower shell, an ear temperature probe and a forehead temperature head; the ear temperature probe is provided radially from inside to outside an infrared sensor, an infrared sensor copper sleeve and a probe body; a protective cap is provided at a head portion of the infrared sensor; the infrared sensor copper sleeve has a prismatic shape with an extension of the same prismatic shape but having a smaller diameter; the infrared sensor copper sleeve is provided with a through hole inside along a lengthwise direction thereof; the infrared sensor and the protective cap are inserted inside the through hole; the probe body has a flaring shape; a second through hole is provided inside the probe body along a lengthwise direction thereof; a piece of flat and smooth transparent glass is provided between an end of the probe body having a smaller inner diameter and the infrared sensor copper sleeve; a forehead temperature head sleeves the ear temperature probe, and is connected with the lower shell.

As a modification, the transparent glass is a silicon lens; the transparent glass has a hexagonal shape; the end of the probe body having a smaller inner diameter is provided with a hexagonal hole; the transparent glass is inserted into the hexagonal hole; the hexagonal hole may also be configured in other shapes.

As a modification, the ear temperature probe is connected with the lower shell via a connecting mechanism; the connecting mechanism comprises four hooks; the four hooks are evenly mounted circumferentially at a bottom surface of an end of the probe body having a larger inner diameter; a mouth is provided at one end of the lower shell; the four hooks pass through the mouth of the lower shell and hook against an inner end surface of the mouth of the lower shell, and then being fixed by a connecting ring.

As a modification, the connecting ring is supported within a circular space enclosed by the four hooks; the connecting ring is provided with two connecting ears; the two connecting ears pass through gaps between the hooks and abut against the mouth of the lower shell, and are fixedly connected to the lower shell via screws.

The present invention has the following beneficial effects:

The infrared thermometer provided by the present invention configures the end of the ear temperature probe inserted into the ear canal as a flat surface by using a silicon lens, and such silicon lens has good transparency that will not affect the measurement performed by the infrared sensor. Therefore, as compared with a recessed surface as in the prior art, a flat surface enables contamination thereon by the dirt from the ear canal to be easily found and cleaned, thereby maintaining the accuracy of temperature measurement. Also, by providing a forehead temperature head additionally, the ear temperature probe can be protected when it is not in use, and on the other hand, the present invention may as well be used as an infrared forehead thermometer.

