CN103062669A - Adjustable myopia-prevention desk lamp - Google Patents

Abstract

The invention discloses a desk lamp for preventing myopia. There is an ultrasonic rangefinder on the side of the base of the desk lamp. When the ultrasonic wave is horizontally irradiated to the body, the horizontal distance xcm from the book to the body is obtained, and the distance from the desk to the starting point of the student is input through the panel of the desk lamp. The distance between the eyes is ycm, and the calculation result x ² +y ² is calculated by the calculator in the base of the desk lamp, and a trigger signal is sent through the control circuit to turn on and off the console lamp. When x ² +y ² ≥ 30 ² cm ² , turn on the light, Turn off the light when x ² +y ² ≤30 ² cm ² . The desk lamp controls the light bulb on and off through the measured distance, thereby reminding the user to maintain the correct writing posture and distance, and solving the problem of vision loss caused by the eyes being too close to the book when writing or reading.

Description

Adjustable anti-myopia desk lamp

technical field

The invention relates to a desk lamp, in particular to an adjustable anti-myopia desk lamp.

Background technique

Traditional desk lamps are mainly used for lighting. When people are working, reading books, reading newspapers and students are doing homework, their eyes are usually less than 30cm away from the books. If things go on like this, it will lead to vision loss or hunchback, which will affect people's study, work and students' growth .

Contents of the invention

Due to the shortcomings of traditional desk lamps, after repeated thinking and experiments, the team finally successfully developed an adjustable anti-myopia desk lamp with excellent performance. This desk lamp can adjust the safe distance between books and students' eyes according to students of different ages, effectively solving The problem of hunchback and myopia when students read and write can achieve the ideal effect of preventing myopia and hunchback.

The purpose of the present invention is to adjust the distance between the book and the eyes through the desk lamp, and turn on the light only when the safe distance is reached or exceeded, so as to fundamentally solve the vision loss caused by sitting posture and prevent myopia.

The invention includes: a desk lamp, the side of the base of the desk lamp is equipped with an ultrasonic rangefinder, when the ultrasonic wave is horizontally radiated to the body, the horizontal distance x cm from the book to the body is obtained, and then the distance from the eyes of the student taking the desktop as the starting point is input through the panel of the desk lamp y cm, calculate the result x ² +y ² through the calculator in the lamp base, send a trigger signal through the control circuit to turn on and off the console lamp, turn on the lamp when x ² +y ² >=30 ² cm ² , and turn on the lamp when x When ² +y ² <=30 ² cm ² , turn off the light.

Further, the ultrasonic range finder can be installed on the front, back, left or right side of the base.

In addition, the distance measuring range of the ultrasonic rangefinder can be set within 60cm directly in front of it.

In addition, the desktop sitting height value entered on the base panel can be actually measured and input according to the sitting height of different students, tables of different heights, and chairs of different heights.

To sum up, the adjustable anti-myopia table lamp of the present invention can allow users to adjust their homework in various aspects according to the sitting height, the height of the table, the height of the chair, and the distance between the book and the person. Only when the distance between the book and the eyes is greater than or equal to When the height is 30cm, the table lamp can be turned on automatically, which is convenient and practical.

Description of drawings

Figure 1 is a schematic diagram of the present invention.

Detailed ways

Fig. 1 is a schematic diagram of the implementation of an adjustable anti-myopia desk lamp according to the present invention, as shown in Fig. 1 . The table lamp specifically includes: 1. The base of the table lamp; 2. The window of the ultrasonic rangefinder; 3. The switch; 4. The input panel for the sitting height of people of different ages (the distance between the human body and the eyes starting from the horizontal desktop); 5. The lamp Column; 6. Bulb (energy-saving lamp or ordinary bulb can be used); 7. Lampshade. When the switch is turned on, the ultrasonic rangefinder works, and the sitting height data (height) of the panel is input, and the operator sends a trigger signal to the control circuit. When the condition is met, the control circuit is connected, and the desk lamp is turned on (bright), otherwise the desk lamp is turned off (dark). ),

The specific implementation is: when the power is plugged in, the switch is turned on, the ultrasonic range finder works, the distance x cm between the book (the center of the book and the ultrasonic range finder is on the same horizontal line) is measured, and the reader is input on the lamp panel to measure the distance x cm. The desktop is the starting point, the distance between the body part and the eyes is y cm (different heights, tables and chairs of different heights have different heights). The hypotenuse distance x ² +y ² is calculated through the calculation in the lamp base, and the control circuit sends a trigger signal. When the condition x ² +y ² >=30 ² cm ² is met, the circuit of the light bulb 6 is automatically connected, and the light bulb 6 When x ² +y ² <= 30 ² cm ² , the controller in the base of the desk lamp does not send a trigger signal, the circuit of bulb 6 cannot be connected, and the bulb does not light up, reminding the user that the distance from the book to the eyes is less than the safe distance, and needs Adjust your sitting posture to protect your eyesight.

Further, the shape of the table lamp can be changed according to different design requirements.

Furthermore, the material of the lamp post, the base and the lamp cover of the table lamp can be selected from plastic, stainless steel or alloy. the

Claims (2)

1. An adjustable anti-myopia desk lamp, comprising: a desk lamp, characterized in that there is an ultrasonic rangefinder on the side of the base of the desk lamp, when the ultrasonic wave is horizontally directed to the body, the horizontal distance x cm from the book to the body is obtained, and then through the distance x cm of the desk lamp. The panel inputs the distance y cm from the student’s eyes starting from the desktop, calculates the result x ² +y ² through the calculator in the base of the desk lamp, sends a trigger signal through the control circuit to turn on and off the console lamp, when x ² +y ² > Turn on the light when =30 ² cm ² , turn off the light when x ² +y ² <=30 ² cm ² . 2. The anti-myopia table lamp according to claim 1, characterized in that the ultrasonic rangefinder can be installed on the front, rear, left or right sides of the lamp holder.