JPH0734709Y2 - Desk mat - Google Patents

Description

[Detailed Description of the Invention] << Industrial Application Field >> The present invention relates to a desk mat to be placed on the top surface of a desk used especially by school children.

<< Conventional Technology and Problems >> In recent years, the deterioration of eyesight of school children has become a problem, and correct reading postures have been taught to prevent myopia, but the results have not been sufficiently achieved.

Therefore, as a measure for myopia prevention, there is provided a learning desk that incorporates a myopia prevention device that issues an alarm when the user's head approaches within a predetermined range and notifies the user of posture disturbance. (Japanese Patent Laid-Open No. 59-115005) However, since the above device is integrated with the desk, it has no effect when studying at another place.

In addition, younger children, who are relatively unable to voluntarily correct their studying attitudes, often study at kotatsu, dining tables, etc., and with the above-mentioned conventional device, the original purpose of myopia prevention is easily achieved. There wasn't.

<Purpose and configuration of the present invention> The present invention is intended to provide a desk mat that is easy to carry and easy to use, and has a myopia preventive function that informs the illuminance suitable for studying. Its configuration is a distance sensor that detects the position of the user's head, an illuminance sensor that detects the illuminance of the desk top surface, and when the user's head is within a predetermined range, or the illuminance of the desk top surface is the predetermined illuminance. A sensor unit having an alarm device that emits a warning sound in response to a signal from a distance sensor or an illuminance sensor when the following occurs is attached to a predetermined dimension position from the front end.

<< Example >> Hereinafter, an example is described based on a drawing.

In FIG. 1, reference numeral 1 indicates a desk main body, reference numeral 2 indicates a desk bookshelf standing upright on the upper rear portion of the desk main body 1, and reference numeral 3
Indicates a desk mat extended on the top plate 11 of the desk body 1, and reference numeral 5 indicates a sensor unit attached to the desk mat 3.

The desk bookshelf 2 has an illumination lamp section 23 on the lower surface of an upper shelf section 22 formed in the upper part between the left and right side plates 21, 21.
Illuminates the top surface of the top plate.

The sensor unit 5 is located rearward by a predetermined dimension from the front end of the desk mat 3 and is attached so as to project above the desk mat 3.

Then, the sensor unit 5 has a distance sensor 6 for detecting the head position of the user, an illuminance sensor 7 for detecting the illuminance of the desk surface, and a disturbance in the posture of the user. An alarm device 8 is provided to notify the decrease in illuminance.

That is, in the embodiment, the distance sensor 6 is located on the desk top surface.
At a height of 30 cm, it is set to send a signal to the alarm device 8 to emit a warning sound when the user's head approaches within 45 cm from the sensor unit 5.

On the other hand, the illuminance sensor 7 is set so that when the illuminance on the desk surface becomes 500 lux or less, a signal for issuing a warning sound is sent to the alarm device 8.

The setting of 45 cm from the distance sensor 6 to the user's head is set to the optimum condition depending on the size of the desk mat 3 to be attached.

In other words, with the front end of the desk mat 3 aligned with the front end of the desk body 1, the sensor unit 5 (normally the rear end of the desk mat 3) and the head of the user that are mounted in a position that does not interfere with the user. This is because the distance to and changes depending on the depth dimension of the desk mat 3.

The height position from the desk top surface is set to 30 cm because it is generally preferable that the reading distance is about 30 cm.

In the embodiment, the distance sensor 6 is attached to the sensor unit 5.
Although the illuminance sensor 7 and the warning device 8 are provided, a timer for issuing a warning from the warning device 8 only when the user's posture is disturbed and the illuminance is lowered for more than a predetermined time, the distance sensor 6, the illuminance It may be provided together with the sensor 7.

<Effect> As described above, since the present invention is equipped with the distance sensor and the illuminance sensor on the desk mat, it can be carried not only to the study desk but also to a kotatsu, a dining table, etc.
Moreover, the front end of the desk mat only needs to be aligned with the front edge of the desk or the like to be used, and the method of use is very simple, and the disturbance of the posture of the user and the decrease of the illuminance are successively prevented to prevent myopia.

[Brief description of drawings]

 FIG. 1 shows one embodiment of the present invention, and FIG. 1 is a perspective view showing a usage state of the present invention. 1 ... desk body 2 ... desk bookshelf 3 ... desk mat 5 ... sensor unit 6 ... distance sensor 7 ... illuminance sensor 8 ... alarm device

Claims (1)

[Scope of utility model registration request] 1. A distance sensor for detecting the position of the user's head, an illuminance sensor for detecting the illuminance of the desk top surface, and a illuminance on the desk top surface when the user's head is positioned within a predetermined range. A desk mat, wherein a sensor unit having an alarm device that emits a warning sound upon receiving a signal from a distance sensor or an illuminance sensor when the illuminance is lower than or equal to is attached to a predetermined dimension position from the front end.