CN201114447Y - Viewing distance control device for television - Google Patents

Abstract

The utility model relates to a distance control device technical field, in particular to a television viewing distance control device, which comprises a box body and a power line, wherein the front end of the box body is provided with an infrared scanning induction panel, an infrared induction device connected with the power line is arranged in the box body, and the infrared induction device comprises a pulse trigger circuit, an infrared detecting inductor, an amplifying circuit, a mode judging comparison circuit, a power control circuit and an AC/DC power circuit; when the fact that the human body stays in the preset infrared scanning range close to the front of the television for more than the preset time is sensed, the power supply of the television can be automatically judged and cut off, and the power supply of the television is recovered after the human body leaves for the preset time, so that the purposes of controlling the distance of the television for viewing, protecting the eyes of teenagers and children and helping the teenagers and children to form correct television viewing habits are achieved.

Description

A TV viewing distance control device

Technical field:

The utility model relates to the technical field of distance control devices, in particular to a TV viewing distance control device.

Background technique:

As we all know, if the viewing distance of TV is not well controlled, the rays emitted by the TV will cause great damage to the eyes, which can easily damage the eyesight and cause vision loss. If the eyes are not in a normal state at this time, it is easy to cause excessive eye fatigue, induce glaucoma, myopia, astigmatism and other TV eyes, which means that more and more people suffer from myopia in modern society. And one of the reasons why the age of onset is getting younger and younger, so effectively protecting our eyes is closely related to controlling the distance of watching TV. Existing TV can be set shut-off time, reminds people to pay attention to rest, but can't control viewing distance, also has no actual vigilance effect to teenagers and children.

Utility model content:

The purpose of this utility model is to provide a TV viewing distance control device that protects the eyes of teenagers and children and reminds them to control the viewing distance of TV in order to help teenagers develop the habit of watching TV correctly.

In order to achieve the above object, the technical solution adopted by the utility model is: it includes a box body and a power cord, an infrared scanning sensing panel is arranged at the front end of the box body, and an infrared sensing device connected with the power cord is arranged in the box body.

The infrared sensing device includes a pulse trigger circuit, an infrared detection sensor, an amplifying circuit, a mode judgment comparison circuit, a power supply control circuit and an AC/DC power supply circuit, an infrared detection sensor, an amplification circuit, a mode judgment comparison circuit and a power supply The control circuits are connected sequentially, and the output terminals of the AC/DC power supply circuit and the pulse trigger circuit are respectively connected with the input terminals of the infrared detection sensor.

The beneficial effect of the utility model is that: the utility model is provided with an infrared scanning sensing panel at the front end of the box body, and an infrared sensing device connected to the power line is arranged in the box body, and the infrared sensing device includes a pulse trigger circuit, an infrared detection sensing Infrared detector, amplifier circuit, mode judgment comparison circuit, power control circuit and AC/DC power supply circuit, infrared detection sensor, amplification circuit, mode judgment comparison circuit and power control circuit are connected in sequence, AC/DC power supply circuit and pulse trigger The output terminals of the circuit are respectively connected to the input terminals of the infrared detection sensor; when it is sensed that the human body approaches the front of the TV and stays within the preset infrared scanning range for more than the preset time, it can automatically judge to cut off the TV power supply, and after the human body leaves, it will pass through the pre-set time. Set the time to restore the power supply of the TV to achieve the purpose of controlling the viewing distance of the TV, protecting the eyes of young people and children, and helping young people to develop the correct habit of watching TV.

Description of drawings:

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a block principle diagram of the infrared sensor device of the present invention.

Detailed ways:

Below in conjunction with accompanying drawing, the utility model is further described, see accompanying drawing 1, shown in 2, a kind of television viewing and viewing distance control device, it comprises box body 1, power cord 2, and the outside of box body 1 is provided with socket, socket It is connected with the power plug of the TV set, and the box body 1 is also provided with a switch, which is used to control the on-off of the power supply of the utility model. The power cord 2 is connected with an external power supply to provide power for each circuit. An infrared scanning sensing panel 3 is provided, and an infrared sensing device 4 connected to the power line 2 is arranged in the box body 1; the infrared sensing device 4 includes a pulse trigger circuit 41, an infrared detection sensor 42, an amplification circuit 43, a mode Judgment comparison circuit 44, power supply control circuit 45 and AC/DC power supply circuit 46, infrared detection sensor 42, amplification circuit 43, mode judgment comparison circuit 44 and power supply control circuit 45 are connected in sequence, AC/DC power supply circuit 46 and The output terminals of the pulse trigger circuit 41 are respectively connected to the input terminals of the infrared detection sensors 42 .

The functions of the above-mentioned circuits and components are: the pulse trigger circuit 41 is used as the power supply terminal for triggering the infrared transmitter; Infrared rays, when detecting that the human body enters the scanning range 5, output signals to the amplifying circuit 43; the function of the amplifying circuit 43 is to amplify the signal output by the infrared detection sensor 42; the mode judgment comparison circuit 44 judges the received Whether the signal will cut off the power supply of the TV, the function of the power control circuit 45 is to trigger the control switch to connect or cut off the power of the TV; Each internal circuit provides power.

The utility model can be connected with the TV conveniently. Firstly, insert the power plug of the TV into the socket of the box body 1, connect the power cord 2 with the indoor power supply, and place the utility model in front of the TV; The power supply of the TV set, the infrared detection sensor 42 scans the preset scanning range 5, when it detects that the human body is in the scanning range 5 and stays in the scanning range 5 for more than the originally set time, immediately cut off the power of the TV set Power supply, until the human body leaves the scanning range 5 and after the preset time, the power supply of the TV is automatically turned on, so as to achieve the purpose of controlling the TV viewing distance and protecting the eyesight of teenagers and children.

Of course, the above-described embodiments are only preferred examples of the present utility model, and are not intended to limit the scope of implementation of the present utility model, so all equivalents done according to the structure, features and principles described in the scope of patent application for the present utility model Changes or modifications are all included in the patent scope of the utility model application.

Claims (2)

1. A TV viewing distance control device, which includes a box body (1) and a power cord (2), is characterized in that: an infrared scanning sensing panel (3) is arranged at the front end of the box body (1), and the box body ( 1) There is an infrared sensor (4) connected to the power cord (2) inside. 2. A TV viewing distance control device according to claim 1, characterized in that: said infrared sensing device (4) includes a pulse trigger circuit (41), an infrared detection sensor (42), an amplifier circuit (43), mode judgment comparison circuit (44), power supply control circuit (45) and AC/DC power supply circuit (46), infrared detection sensor (42), amplifier circuit (43), mode judgment comparison circuit (44) It is connected with the power control circuit (45) in order, and the output terminals of the AC/DC power supply circuit (46) and the pulse trigger circuit (41) are respectively connected with the input terminals of the infrared detection sensor (42).

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