RU2368876C1 - Electronic thermometre with transparent display - Google Patents

Abstract

FIELD: instrument making.

SUBSTANCE: device is related to electronic thermometres and may be used to measure air temperature behind glass outside or inside special premises. Suggested electronic thermometre consists of transparent liquid-crystal indicator and electronic part comprising at least one temperature detector, besides electronic part of thermometre and indicator are arranged as fixed on self-adhesive transparent base, function of which is adhesion to glass, and on back front side of indicator, on thermometre electronic part there is a solar battery. Besides inside electronic part of thermometre, accumulator is additionally installed, which is resistant to low temperatures, microcircuit of thermometre control and accumulator charge from solar battery, moreover, one of temperature detectors is heat-insulated from the main body, and the other one is heat-insulated from the main body and environment.

EFFECT: complete autonomy of thermometre - it is not required to replace supply element, elimination of temperature readings distortion, and also electronic part of thermometre is fully tight, which prevents water ingress inside of it.

2 cl, 2 dwg

Description

Application area

The device relates to electronic thermometers and can be used to measure air temperature behind glass on the street or inside special rooms.

State of the art

The advantages of glass-mounted thermometers with a clear display are obvious. This makes it easier to obtain information about the temperature in the street, to receive information in a more readable form (visibility from a few meters from the window), the lack of the need to drill a window frame for mounting a thermometer. The closest analogue is a street thermometer with a transparent display according to patent DE202005005017U. The thermometer is mounted on the window from the outside. It has the function of monitoring the maximum and minimum temperatures during the day.

This thermometer consists of a holder, inside which a microprocessor of a temperature sensor and a battery are built-in, and a transparent liquid crystal display. Moreover, the holder is located on top of the display and serves as a roof for it from the negative effects of precipitation and sunlight.

The disadvantage of this thermometer is the need to replace the battery, which requires removing the cover from the holder. In addition, since the holder is equipped with a removable cover, moisture easily enters the thermometer, which contributes to the rapid failure of the battery and corrosion of contact surfaces. Another disadvantage is that the thermometer will be subject to temperature distortion under the influence of the fact that the temperature sensor will come into contact with the elements of the holder body.

The technical result of the claimed device is the complete autonomy of the thermometer - it does not need to replace the battery, eliminating distortion of temperature readings, and the electronic part of the thermometer is completely tight, which eliminates the ingress of moisture inside it.

Brief Description of the Drawings

Figure 1 shows the structural device of the thermometer (front and side views), where 1 is the body, 2 is a self-adhesive base, 3 is a liquid crystal indicator, 4 is the body of the electronic part, 5 is a battery, 6 is a control chip, 7 is a solar battery, 8 - thermal sensor isolated from the housing and the environment, 9 - thermal sensor isolated from the housing.

Figure 2 shows the appearance of the thermometer in action (a - view from the user, b - view from the street).

Device essence

The claimed technical result is achieved due to the fact that (see Figure 1) an electronic thermometer consisting of a transparent liquid crystal indicator (3) and an electronic part (4) containing at least one temperature sensor, differs in that the electronic part of the thermometer and indicator made on a self-adhesive transparent base (2), the function of which is to fasten to the glass, and from the back of the front side of the indicator on the electronic part of the thermometer there is a solar battery (7), and inside the electronic the thermometer part additionally contains a battery (5) that is resistant to low temperatures, a microcircuit (6) for controlling the thermometer and battery charge (5) from the solar battery (7), while one of the temperature sensors (9) is thermally insulated from the main body, and the other ( 8) thermally insulated from the main body and the environment. On the front side of the indicator on the electronic part of the thermometer, the surface can be mirrored.

The liquid crystal indicator (3) works “in the light” and is made resistant to low temperatures.

The electronic part (4) of the thermometer contains a battery (5), for example, a Li-lon battery that is resistant to low temperatures.

The microcircuit (6) controls the thermometer and the battery charge (5) from the solar battery (7). It also reads the readings from the temperature sensors (8 and 9) and calculates the true temperature using a tabular or other algorithmic method, based on the difference in the readings of the temperature sensors (“detects” the incidence of sunlight). The sensor (8) is thermally insulated from the main body and the environment (has a mirror coating), and the sensor (9) is thermally insulated only from the main body (4), but is not isolated from the environment (has a dark coating that effectively absorbs sunlight).

The result of these readings is a more accurate estimate of air temperature. The solar battery (7) charges the main battery (5) by means of a control chip (6). The solar battery (6) itself is located on the side of the indicator on the electronic part of the thermometer (see Figure 2 (b)) and the consumer does not see it (see Figure 2 (a)).

To give the thermometer a more inconspicuous appearance on the glass, it is possible to mirror the front part of the body (4) of the electronic part of the thermometer that the consumer sees.

Claims (2)

1. An electronic thermometer, consisting of a transparent liquid crystal indicator and an electronic part containing at least one temperature sensor, characterized in that the electronic part of the thermometer and indicator are mounted on a self-adhesive transparent base, the function of which is to fasten to the glass, and from the opposite side of the front side of the indicator, a solar battery is installed on the electronic part of the thermometer, and inside the electronic part of the thermometer there is additionally a battery resistant to low temperatures temperature control chip thermometer and battery charge from the solar battery, while one of the temperature sensors is thermally insulated from the main body, and the other is thermally insulated from the main body and the environment. 2. The electronic thermometer according to claim 1, characterized in that on the front side of the indicator on the electronic part of the thermometer, the surface is mirrored.

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