Lighting system and luminaire
A lighting and light source technology, applied in the field of lighting systems and lighting fixtures, which can solve problems such as expensive and prone to flickering
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 example
[0032] will refer to figure 1 A lighting system and a lighting fixture according to a first embodiment of the present invention will be described.
[0033] The lighting fixture 1 according to the first embodiment includes a plurality of LEDs 2 as light sources emitting lights of colors different from each other. In this embodiment, these light sources emit light of three different colors such as red, green and blue, for example. The first light source, ie the red LED 2a, may comprise a GaAsP LED element. The second light source, green LED 2b, may comprise a GaP LED element. The third light source, blue LED 2c, may include a GaN LED element. Alternatively, the red LED 2a and the green LED 2b can be obtained by converting the wavelength of the white LED using a phosphor.
[0034] In this embodiment, the red LED 2a includes four LED elements connected in series. Each of the green LED 2b and the blue LED 2c includes two LED elements electrically connected in series. Further...
no. 2 example
[0063] will refer to Figure 5 A circuit diagram of a lighting system and a lighting fixture according to a second embodiment of the present invention will be described.
[0064] The structure of the second embodiment is almost the same as that of the first embodiment, but the second embodiment also employs a smoothing circuit including a capacitor C and a resistor arranged in parallel between the driving unit 7 and the LED 2 R. The capacitor C1 and the resistor R1 are electrically connected to the driving unit 7a and the LED 2a and arranged between the driving unit 7a and the LED 2a. The capacitor C2 and the resistor R2 are electrically connected to the drive unit 7b and the LED 2b and arranged between the drive unit 7b and the LED 2b. The capacitor C3 and the resistor R3 are electrically connected to the drive unit 7c and the LED 2c and arranged between the drive unit 7c and the LED 2c. Capacitors C1, C2 and C3 have the same capacity c, ie c1=c2=c3. In addition, resistor...
no. 3 example
[0075] will refer to Figure 7 A circuit diagram of a microcomputer is shown to explain a lighting system and a lighting fixture according to a third embodiment of the present invention. Since the structure other than the microcomputer 6 is the same as the second embodiment, this description will focus on the difference between the second embodiment and the third embodiment.
[0076] The microcomputer 6 according to the third embodiment includes a dimming control circuit 61 and a light-off measurement unit 62 and an output unit 63 to realize the third embodiment. The dimming control unit 61 performs analog-to-digital (A / D) conversion on the DIM signal input from the dimming input unit 9, and determines the cycle and duty ratio of the PWM signal to obtain a target color temperature corresponding to the input signal DIM. luminous flux. The dimming control unit 61 also performs light-off control according to the energization state of the AC power supply AC.
[0077] The light-...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More