KR20120004112U - Night Lighting Led Analog Watch - Google Patents

Abstract

(A) Technical field: Clock that can be easily identified at night by using CDS and LED
(B) Problem to be solved: Separate charging for night time identification of installed watch
To drive multiple LEDs for longer periods (more than 6 months) with built-in battery
(C) Solution: Using light-sensing device CDS and light emitting device LEDs
By using the built-in program, several LEDs are turned on and blinking one by one in rapid succession so that the LED light source (4.5-6 volts) built in the analog clock secures the LED light source with sufficient clock time identification at night for long periods of time. One at
It runs fast and consumes less power (6uA) and one LED.
It consumes nothing but power, but the LED always turns on
Time identification was facilitated.
(D) Effect: It is easy to identify time for a long time without a separate light source in time identification of analog clocks installed at night indoors.

Description

 Night Lighting Led Analog Watch {Night Lighting Led Analog Watch}

The present invention drives the program built into the CPU to detect the light with the CDS and turn on the LED sequentially at night to maintain the current time with only the built-in battery without a separate light source

Long term (more than 6 months) can be identified.

In the case of the existing analog clock that is manufactured and sold, it is impossible to identify at night, and even if a needle using luminous paint is attached, it does not emit light after a certain time and night identification is impossible.

You can identify the current time at night by lighting several LEDs only with the built-in battery (4.5-6 volts) without a separate power supply (charging circuit), but the built-in battery is quickly discharged due to high power consumption. How to secure LED light source for night vision for a long time.

When several LEDs are driven by sequential flashing using a CPU, power consumption is reduced so that sufficient light source can be secured for time identification, allowing night time identification for a long time.

The time of the analog clock installed in the room can be identified without the need for a separate light source, and the aesthetic effect can be achieved by the soft lighting effect.

1.If the room is dark, and if light below the brightness set in the CDS is detected, the TRANSISTER
The operating current flows to the base and the CPU starts to operate. The voltage is sequentially applied to the LEDs on the CPU output side.
2. Only one LED is on but quickly turns on and off.
Visually, it seems to be on all the time.

1. By operating several LEDs, we have a light source that can identify the clock at night.

2. A low power CPU was used to minimize power consumption.

3. Minimize power consumption by operating several LEDs one by one.

4. LED 1 --- It turns on and off one by one time as fast as 1kh to drive several LEDs up to LED n sequentially, so power consumption is consumed only as long as one LED is turned on, but what is actually seen is several With the same effect that the LED is always on, the light source is secured enough to identify the time of the clock.

LED: Light Emitting Diode
CDS: Photoconductive element made of a compound of Cadmium (CD) and Sulfur (S)
Resistance varies from 1M (mega) ohms to hundreds of ohms depending on brightness
CPU: Central Processing Unit.
TRANSISTER: Semiconductor

Claims (2)

Multiple LEDs are repeatedly turned on and off in rapid succession
How to make the built-in battery run for a long time (more than 6 months) with the same effect as always on The night-lighted wall clock, table clock and lighting frame made by the method described above according to claim 1

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