CN2115782U - Warning device for near vision - Google Patents

Abstract

The utility model provides a warning device for near vision, which is provided with an audio signal generator. The utility model is characterized in that power supply source comprises a button shape cell, a manual switch, and a mercury position switch. The output end of the audio signal generator is provided with an earphones, and an outer casing is connected with a sun hat wearing instrument. When the warning device for near vision is worn on the appropriate position of the head, the manual switch is closed, and when the head is lowered, the mercury position switch is switched on, the audio signal generator is supplied with power to work, and the earphones send out warning sound for near vision. When the head of the human body is raised, the mercury position switch off, and the warning sound stops.

Description

Warning device for near vision

This utility model relates to the device of pre-myopia prevention.

When writing, reading a book or reading, will form myopia if head hangs low, long-time myopia is bigger to the eyes infringement, and particularly adolescent student causes myopia easily.For pre-myopia prevention, there is Crinis Carbonisatus to understand a kind of myopia prevention electronic lamp, whether the head that it adopts the infrared ray sensing device to detect the people hangs low surpasses the scope of regulation, when surpassing, desk lamp extinguishes and the sound that gives a warning automatically, and this desk lamp is owing to the use alternating current power supply, and volume is too big.Therefore, only be suitable for using at home night, its range of application is too narrow.

The purpose of this utility model provides conveniently, simple and suitable near-sighted reminiscences.

The purpose of this utility model is achieved through the following technical solutions.

Near-sighted reminiscences described in the utility model, one audio signal generator or music-integrating block are arranged, being characterized in that power supply circuits are connected in series mutually by battery, hand switch K1 and hydrargyrum position switch K2 forms, and the audio signal output end of audio signal generator or music-integrating block is connected with an electroacoustic component; Shell body is connected with an applicator.

This utility model design preferably is that applicator is that sunbonnet, hair clip or Hair Fixer etc. are convenient to the article that the head part wears.

The better technical scheme of this utility model is that electroacoustic component is an insert earphone.

With reference to the accompanying drawings this utility model is done below and described in further detail.

Fig. 1 myopia reminiscences and sunbonnet connection diagram

Fig. 2 myopia reminiscences and Hair Fixer connection diagram

Fig. 3 myopia reminiscences circuit theory diagrams

Fig. 4 hydrargyrum position switch scheme of installation

With reference to Fig. 1-4, near-sighted reminiscences described in the utility model has an audio signal generator (also can adopt music-integrating block) ［ 1 ］, and audio signal generator shown in Figure 3 is the simple audio oscillator circuit that adopts two audions (BG1, BG2) and resistance R 1, capacitor C 1 to constitute; Be characterized in that power supply circuits are by battery ［ 2 ］, hand switch K1 and hydrargyrum position switch K2 are connected in series mutually and form, the audio signal output end of audio signal generator ［ 1 ］ is connected with an electroacoustic component ［ 3 ］, electroacoustic component ［ 3 ］ can be piezoelectricity singing piece or loudspeaker, but preferably select insert earphone ［ 3 ］ for use, in order to avoid influence other people during sounding, each parts except that insert earphone ［ 3 ］ preferably are installed in the shell body ［ 4 ］, shell body ［ 4 ］ is connected with an applicator ［ 5 ］, and applicator can be selected sunbonnet for use, hair clip or Hair Fixer etc. are convenient to the article of wearing that are connected with human body head.

When using near-sighted reminiscences, should earlier applicator be worn on the head appropriate location, closed hand switch K1, when writing, read a book or the head of reading when hanging low, hydrargyrum shift position among the hydrargyrum position switch K2 and the contacting of hydrargyrum position switch, the power on circuitry work of audio signal generator, electroacoustic component are sounded remind user that head is lifted, head lifts back hydrargyrum position switch and disconnects, and reminds sound to stop.

Adopt near-sighted reminiscences described in the utility model have the following advantages (1) have wide range of applications, no matter daytime or night, family or school all can use, and should select for use insert earphone as electroacoustic component when using in school, can not influence adjacent seat classmate and classroom order like this, (2) volume is very little, very light in weight is a power supply with twist button battery, is suitable for head-mount, time spent only needs Closing Switch K1, the time spent does not disconnect and closes K1, and is therefore, easy to use.(3) simple in structure, low price helps promoting the use of in vast adolescent student.

Claims (3)

1, near-sighted reminiscences, one audio signal generator or music-integrating block [1] are arranged, it is characterized in that: power supply circuits are connected in series mutually by battery [2], hand switch K1 and hydrargyrum position switch K2 and form, and the audio signal output end of audio signal generator or music-integrating block [1] is connected with an electroacoustic component [3]; Shell body [4] is connected with applicator [5].

2, near-sighted reminiscences according to claim 1 is characterized in that applicator ［ 5 ］ is sunbonnet, hair clip or Hair Fixer.

3, near-sighted reminiscences according to claim 1 and 2 is characterized in that electroacoustic component ［ 3 ］ is an insert earphone.

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