Floodlight LED projection clock

Abstract

The invention provides a floodlight LED projection clock and relates to the field of electronic techniques and light colors. Red, green and blue light sources respectively representing a hour pointer, a minute pointer and a second pointer or combined color cyan, purple and yellow floodlight LEDs form a light-emitting dial plate, light is emitted under the control of a central processing unit, a real-time clock and an LED driving circuit and projected onto a light shading point rod perpendicular to the center of the dial plate, cyan, purple and yellow or red, green and blue complementary color projection points serving as the hour pointer, the minute pointer and the second pointer to indicate the time are produced on a projection dial plate under the background of white light formed through color mixture, and the color sequence can be set by oneself. The floodlight LED projection clock consists of the light-emitting dial plate, the light shading point rod, the projection dial plate, the central processing unit, the real-time clock, the LED driving circuit, a power supply circuit, a microphone recording and sound control circuit, a loudspeaker, a power amplifier, an USB power supply, a data interface, a wireless transmitting-receiving module, a temperature and humidity detection unit, a key, a power supply switch, a battery, a charging circuit, a solar battery, a moment marking dial plate and a housing and has color-lamp and illumination functions.

Description

technical field [0001] The invention relates to the fields of electronic technology and light color, in particular to a floodlight LED projection clock. Background technique [0002] At present, there are 12 lights distributed according to the circular hour of the clock in foreign countries, which illuminate the middle shading needle bar in turn according to the hour to form a shadow clock with a projection. Its structure is complex, the shadow is single, and it can only represent the hour scale (US Patent: US4034549 A, Shadow Clock) . There are also projection clocks in which red, green and blue spotlight LEDs are projected from three layers of different height color dials to the middle shading needle bar at different angles to form shadows. This structure is more complicated, and because of the spotlight LEDs, red, The three colors of green and blue cannot be well mixed and overlapped, the shadow formed by the shading needle bar is black, and the light is messy, making it...

AI Technical Summary

Problems solved by technology

[0002]At present, there are 12 lights distributed according to the circular hour of the clock in foreign countries, which illuminate the shadow clock in the middle of the shading needle rod in turn according to the hour to form a shadow clock. The structure is complex and the shadow is single. Can only represent the hour scale (US Patent: US4034549 A, Shadow Clock)

There are also projection clocks in which red, green and blue spotlight LEDs are projected from three layers of different height color dials to the middle shading needle bar at different angles to form shadows. This structure is more complicated, and because of the spotlight LEDs, red, The three colors of green and blue cannot be well mixed and overlapped, the shadow formed by the shading needle bar is black, and the light is messy, making it difficult to identify

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