CN201017196Y

CN201017196Y - Clock having LED display screen

Info

Publication number: CN201017196Y
Application number: CN 200720139339
Authority: CN
Inventors: 刘锦兴
Original assignee: WEISHENG PRECISION INTERNATIONAL CO Ltd
Current assignee: Leader Industrial Company Limited
Priority date: 2007-02-28
Filing date: 2007-02-28
Publication date: 2008-02-06
Anticipated expiration: 2017-02-28

Abstract

The utility model relates to a clock with a LED display screen, including a casing with a transparent panel, a battery storehouse and a clock circuit, which are arranged inside the casing. The clock also includes the LED display screen which can be observed through the transparent panel, a driving circuit of the LED display screen, and a pyroelectric infrared sensor which controls the opening and the closing of the LED display screen according to the thermal release status of the environment. The LED driving circuit also includes an IC which is used for controlling the duration of the opening status of the LED display screen after being triggered. The utility model controls the opening and the closing of the LED display screen and the duration of the opening status of the LED display screen by the pyroelectric infrared sensor and an intelligent IC, which obtains the characteristics of a high brightness and a long service life of the LED display screen etc, as well as ensures a stand-by time of the clock.

Description

Clock with LED display

Technical field

The utility model relates to a kind of clock, more particularly, relates to a kind of clock with LED display.

Background technology

LED is writing a Chinese character in simplified form of light emitting diode (light emitting diode), LED display is a kind of display mode by the control semiconductor light-emitting-diode, can be used to various information such as display text, figure, image, animation, market, video, video signal.LED display has that brightness height, operating voltage are low, miniaturization, the life-span is long, shock-resistant and the advantage of stable performance.

Most clock, especially family expenses clocks all is to adopt battery as power, and it is exactly prolongs standby time how that LED display is applied to a problem that needs on this clock to consider, one of them solution is exactly to reduce the energy consumption of LED display.

The utility model content

The technical problems to be solved in the utility model is, at the short defective of the clock stand-by time of available technology adopting LED display, provides a kind of clock with LED display.

The technical scheme that its technical matters that solves the utility model adopts is: construct a kind of clock with LED display, comprise the housing that has light penetrating panel, be arranged on battery compartment and clock circuit in the housing, also comprising can be by the observed LED display of described light penetrating panel, also comprise the LED display driving circuit, comprise that also releasing situation according to environment heat controls " the opening " of described LED display and the pyroelectric infrared sensor of " pass ".

In clock described in the utility model, described led drive circuit also comprises and is used to control the IC that is in the duration of " opening " state after described LED display is triggered at every turn.

In clock described in the utility model, described LED display is in " opening " state at every turn after being triggered duration is 6 to 8 seconds.

In clock described in the utility model, also comprise buzzer and control circuit thereof, described control circuit and described clock circuit are engaged in particular point in time and trigger described buzzer.

In clock described in the utility model, described control circuit comprises that also being used to control described hummer begins buzzing, stops buzzing, continues the buzzing or the switch of buzzing intermittently.

In clock described in the utility model, also comprise the support that is used to support described housing.

In clock described in the utility model, also comprise being used for described housing is suspended to wall hanging device on the wall body.

Implement clock of the present utility model, have following beneficial effect: the utility model is controlled " opening ", " pass " of LED display and the duration that is in " opening " state by pyroelectric infrared sensor and intelligent IC, both obtain characteristics such as LED display brightness height, life-span length, guaranteed the stand-by time of clock again.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:

Fig. 1 is the synoptic diagram of first embodiment that the utlity model has the clock of LED display;

Fig. 2 is the fundamental diagram of clock shown in Figure 1;

Fig. 3 is the circuit theory diagrams of clock shown in Figure 1;

Fig. 4 and Fig. 5 are the synoptic diagram of the partial shell of clock shown in Figure 1.

Embodiment

Fig. 1 is the synoptic diagram of first embodiment that the utlity model has the clock of LED display, and Fig. 2 is its fundamental diagram.As depicted in figs. 1 and 2, in first embodiment, clock comprises main part 10 and supporting part 11.Main part 10 comprises the driving circuit 24 of power supply 20, clock circuit 21, the LED display 22 that is connected with clock circuit 21, LED display 22, rpyroelectric infrared (PIR) sensing circuit 23, hummer 26 and the alarm clock control circuit 25 that is connected with driving circuit 24.

In first embodiment, the housing of main part 10 has light penetrating panel 12, can see through the LED display 22 that panel 12 is observed the inside.PIR sensing circuit 23 comprises PI R sensor 2, and pir sensor 2 is arranged on the housing, and PIR sensing circuit 23 is released " opening " and " pass " that situation is controlled LED display according to environment heat.In this embodiment, the induction angle of pir sensor 2 is 45 degree, and distance of reaction is 3 meters.That is to say, in the people entered the scope of pir sensor 2 the place aheads 45 degree, when being less than or equal to 3 meters with pir sensor 2, PIR sensing circuit 23 just was transformed into electric signal with infrared signal, trigger LED display 22 by driving circuit 24, allow LED display 22 be in " opening " state.

In order to reduce the energy consumption of LED display 22 to greatest extent, can also on driving circuit 24, intelligent IC be set, be used to control the duration that is in " opening " state after LED display 22 is triggered at every turn, for example, the duration that is in " opening " state after can allowing LED display 22 at every turn be triggered by intelligent IC is 6 to 8 seconds.

Because adopted pir sensor 2 and intelligent IC, thus the energy consumption of LED display 22 can be reduced effectively, thus can reduce the total energy consumption of clock effectively.The operating voltage that the utlity model has the clock of LED display is 3.6 volts--6.3 volts, and standby current 120uA--50uA.Therefore, the clock that the utlity model has LED display can use battery as power supply, do not need to use alternating current as power supply, thereby reduced effectively clock manufacturing cost, reduced clock volume, increased the dirigibility of clock, this clock can be placed on the desktop, also can be installed on the wall body by wall hanging device.

Housing is provided with alarm clock shift knob 1, pir sensor 2, hour setting (hour set) button 3, minute setting (minute set) button 4, continuously noisy (snooze) button 5, time set button 6 and alarm clock and sets button 7.In use, when pressing time set button 6, set button 3 by the hour, in the time of just can being provided with; When pressing time set button 6,, just branch can be set by minute setting button 4; When pressing alarm clock and setting button 7, button 3 is set by the hour, just can alarm clock rise when noisy, when pressing alarm clock setting button 7,, just can play noisy branch by alarm clock by minute button 4 being set.When the time arrive set work the time of making a noise the time, control circuit 25 triggers hummers, if the button 5 that makes a noise continuously has been pressed, so hummer can rise continuously make a noise or rise off and on noisy, till alarm clock shift knob 1 is pressed.

Fig. 3 is the circuit theory diagrams of clock shown in Figure 1, and Fig. 4 and Fig. 5 are the synoptic diagram of the partial shell of clock shown in Figure 1.

Claims

1. clock with LED display, comprise the housing that has light penetrating panel, be arranged on battery compartment and clock circuit in the housing, it is characterized in that, also comprising can be by the observed LED display of described light penetrating panel, also comprise the LED display driving circuit, comprise that also releasing situation according to environment heat controls " the opening " of described LED display and the pyroelectric infrared sensor of " pass ".

2. clock according to claim 1 is characterized in that, described led drive circuit also comprises and is used to control the IC that is in the duration of " opening " state after described LED display is triggered at every turn.

3. clock according to claim 2 is characterized in that, described LED display is in " opening " state at every turn after being triggered duration is 6 to 8 seconds.

4. clock according to claim 1 is characterized in that, also comprises hummer and control circuit thereof, and described control circuit and described clock circuit are engaged in particular point in time and trigger described hummer.

5. clock according to claim 4 is characterized in that, described control circuit comprises that also being used to control described hummer begins buzzing, stops buzzing, continues the buzzing or the switch of buzzing intermittently.

6. according to any described clock in the claim 1 to 5, it is characterized in that, also comprise the support that is used to support described housing.

7. according to any described clock in the claim 1 to 5, it is characterized in that, also comprise being used for described housing is suspended to wall hanging device on the wall body.