CN2037175U - Reading frame with automatic illuminance-detecting and alarming - Google Patents

Abstract

The utility model relates to a multi-functional reading-rack, which can provide appropriate reading angle for readers; can detect the illumination intensity of light and alarm; can indicate time and store stationary. The utility model can ensure the correct posture, agreeable illuminating light and moderate time when a reader is reading, thereby, the sight falling can be prevented. The utility model is particularly suitable for primary and middle school students when reading.

Description

Reading frame with automatic illuminance-detecting and alarming

The utility model relates to a kind of stationery, is the desirable reading stand of eyesight of protecting young people.

According in 1985 national physical health of students finding, the situation that present student eyesight goes down still was relatively distinct issues, the height of near-sighted illness rate, amazing and worry.Fault during reading, illuminating ray are too bright or too dark, and reading time long be the major reason that causes students in middle and primary schools' eyesight to descend.

The purpose of this utility model is to have suitable reading angle for the reader provides a kind of, and has the automatic detection alarm function of light illumination, and the band time indicates, and can deposit the reading stand of stationery.

The reading stand＜hereinafter to be referred as reading stand〉of the automatic detection alarm of the utility model band light illumination, basic principle according to ergonomics, reading tables angle with reference to the reading room, writing case, the version of article such as book clamp, with reference to the prior aries such as electronic metering circuit in electronics luminance detection instrument and the camera, and they are organically combined, being intended to provides a suitable reading angle for the reader, can contrast light illumination power and carry out automatic detection alarm, can carry out automatic detection alarm to illumination light line strength power, can instruction time, can deposit the multi-functional reading stand of stationery, correct set when being used for guaranteeing readers ' reading, illuminating ray is suitable, the time appropriateness is to reach the purpose that the prevention eyesight descends.

The utility model is described with reference to the accompanying drawings as follows:

Fig. 1 is the structural representation of the utility model reading stand.

Fig. 2 is the automatic detection alarm circuit block diagram of electronics illumination.

As shown in Figure 1, reading stand is made up of platen (1), book clamp (2), support (3), end box (4), clock (5) etc.Platen (1) is used for bearing books, platen (1) is positive is equipped with book clamp (2) and the clock (5) that fixing books are used, on platen (1), also be provided with hole (6) and hole (7), the bottom in hole (6) is equipped with light-sensitive device, the bottom in hole (7) is equipped with light emitting diode, there is a capsule (11) at the back side of platen, is used for installing the automatic detection alarm circuit of electronics illumination.Support (3) is used for supporting platen (1), and its end becomes movable and connects with platen.Its other end and end box (4) adjusted shelves bars (12) location.Regulate the position of support (3), can change the angle of inclination of platen (1).When support (3) drew in, platen (1) and end box (4) constituted the box of a rectangular flat.A part of space on the end box (4) can be used as the capsule that bears stationery.

As shown in Figure 2, the automatic detection alarm circuit of electronics illumination is made up of the dark weak testing circuit (8) of illuminating ray, the too strong testing circuit (9) of illuminating ray and prompting warning circuit (10).Luminance detection can be utilized photo resistance or light-sensitive devices such as photodiode or phototriode or silicon photocell.When light illumination was too secretly or too strong, the too strong testing circuit (9) of luminance detection circuit (8) or illumination light was exported a signal to prompting warning circuit (10).Prompting warning circuit (10) generation sound and light prompting alarm signal are noted to remind the reader.

Clock (5) is used as the time indication, notes the length of reading time to remind the reader.Clock (5) can adopt common stem-winder or electronic clock.

Fig. 3 is the side view of the utility model embodiment.

Fig. 4 is the front view of the utility model embodiment.

Fig. 5 is the vertical view of the utility model embodiment.

Fig. 6 is the schematic diagram of the automatic detection alarm circuit of electronics illumination of the utility model embodiment.

(1) is platen among Fig. 4, and platen (1) can adopt plastics or metal material or Wood shaping. The positive lower edge of platen (1) is equipped with the book clamp (2) that fixing books are used, and the front upper edge is equipped with electronic clock (5), and the bottom of hole (6) is equipped with luminance detection light-sensitive element PSR₁And PSR₂, the bottom of hole (7) is equipped with LED₁And LED₂ The back side of platen (1) is provided with a capsule (11) and is used for installing electronics illumination automatic detection warning circuit. Support (3) is installed in the back side of platen (1), adopts to be actively coupled mode and platen (1) is linked together, and support (3) certain angle that can rotate around the axis is used for regulating the angle of inclination of platen (1). Platen (1) is movably linked together with end box (4), and when support (3) drew in, platen (1) consisted of a rectangular flat capsule with end box (4). End box (4) can adopt plastics or metal material or timber to make, and a part of space of end box can be used to bear the article such as stationery.

Among Fig. 6, light-sensitive element PSR₁And PSR₂Adopt MG45 non-tight type photo-resistor, be used for detecting the variation of light illumination power. Transistor V₁And V₃（V ₂And V₅) adopting 3DG6 and 3D/G12 transistor, the composition control on-off circuit is used for the control integration IC circuit₁On/off. IC₁Adopt NS-128 series music integrated circuit, transistor V₇Adopt 3DG12, loudspeaker SP adopts 2 inches dynamic loudspeakers of 8 Ω, forms the auditory tone cues warning circuit. Transistor V₄And LED₁（V ₆And LED₂) employing 3DG6 transistor and BT2 01 light emitting diode, V₄And LED₁Form the too strong indicating circuit of light, V₆And LED₂Form the too strong indicating circuit of light. Battery E supply circuit power supply. K switch is used for controlling the break-make of power supply.

When light shines photo resistance PSR₁And PSR₂The time, PSR₁And PSR₂Resistance value change with light is strong and weak.

When the too dark illumination of light is lower than setting, photo resistance PSR ₁Present higher resistance value, PSR ₁With resistance R ₁Form a bleeder circuit, A point current potential is descended, impel transistor V ₁Enter cut-off state, V ₁Colelctor electrode is high potential, transistor V ₃Saturation conduction, IC ₁Energising work, loudspeaker SP sends musical sound and reminds the reader to note, simultaneously transistor V ₄Conducting, LED ₁Luminous, guidance light is too dark.If light illumination meets the requirements, PSR ₁Resistance diminishes, and A point current potential rises, V ₁Conducting forces V ₂End IC ₁Be in power failure state, SP is sounding not, simultaneously V ₄Also end LED ₁Not luminous yet.

When the too strong illumination of light is higher than setting, photo resistance PSR ₂Resistance reduces, by resistance R ₂And PSR ₂The bleeder circuit of forming descends B point current potential, impels transistor V ₂Enter cut-off state, V ₂Colelctor electrode is high potential, transistor V ₅Saturation conduction, IC ₁Energising work, loudspeaker SP sends musical sound, reminds the reader to note, simultaneously transistor V ₆Conducting, LED ₂Luminous, guidance light is too strong.Meet the requirements PSR as light illumination ₂Resistance raises, and B point current potential rises, V ₂Conducting forces V ₅End IC ₁Be in power failure state, SP is sounding not, simultaneously V ₆Also end LED ₂Not luminous yet.

Clock (5) adopts the ordinary electronic wrist-watch.

The utility model is novel in design, and simple in structure, easy to use and flexible is easy to carry, and suitable especially students in middle and primary schools use, and prevention students in middle and primary schools visual impairment is had good action.

Claims (4)

1, a kind of reading stand with the automatic detection alarm of light illumination, it is characterized in that by platen (1), book clamp (2), support (3), end box (4), clock compositions such as (5), platen (1) is equipped with book clamp (2) and clock (5), be provided with hole (6) on the top of platen (1), (7), the bottom of (6) is equipped with light-sensitive device in the hole, the bottom in hole (7) is equipped with light emitting diode, also be provided with a capsule (11) at the back side of platen (1) and be used for installing the automatic detection alarm circuit of electronics illumination, it is by dark weak testing circuit of illuminating ray and the too strong testing circuit of illuminating ray and point out warning circuit to form.

2, reading stand according to claim 1, an end that it is characterized in that support (3) becomes movable connection with platen (1), adjusting shelves bar (12) location on the other end and the end box (4), platen (1) becomes movable and connects with end box (4), when support (3) drew in, platen (1) constituted a rectangle capsule with end box (4).

3, reading stand according to claim 1 is characterized in that the light-sensitive device in the automatic detection alarm circuit, available photo resistance or photodiode or phototriode or silicon photocell; When light was too secretly or too strong, a signal was exported immediately to prompting warning circuit (10) in luminance detection circuit (8) and (9), and prompting warning circuit (10) generation sound and light is immediately pointed out alarm signal.

4,, it is characterized in that the illumination light-sensitive element of the bottom installation in hole (6) is PSR according to claim 1 or 3 described reading stands ₁And PSR ₂, they all are to adopt MG45 non-tight type photo-resistor, the light emitting diode that install the bottom is LED ₁And LED ₂, transistor V ₇Adopt 3DG ₁₂, loudspeaker SP adopts 2 inches dynamic loudspeakers of 8 Ω to form the auditory tone cues warning circuit; Transistor V ₄And LED ₁(V ₆And LED ₂) employing 3DG ₆Transistor and BT201 light emitting diode, V ₄And LED ₁Composition light is inferred very much and is shown circuit; V ₆And LED ₂Form the too strong indicating circuit of light.

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