Illuminating apparatus

Abstract

An illuminating apparatus includes a first light emitter, a second light emitter which emits light including more predefined color components than light emitted by the first light emitter, and a lighting device which supplies current modulated according to a visible light communication signal, to the first light emitter. The lighting device supplies a constant current to the second light emitter, while the first light emitter is supplied with current.

1 . An illuminating apparatus, comprising:
 a first light emitter;   a second light emitter which emits light including more predefined color components than light emitted by the first light emitter; and   a lighting device which supplies a first current modulated according to a visible light communication signal, to the first light emitter, wherein   the lighting device supplies a constant current to the second light emitter, while the first current is supplied to the first light emitter.   
     
     
         2 . The illuminating apparatus according to  claim 1 , wherein
 the first light emitter emits white light having a first color temperature, and   the second light emitter emits white light having a second color temperature lower than the first color temperature.   
     
     
         3 . The illuminating apparatus according to  claim 1 , wherein
 the first light emitter includes a first light emitting element which emits blue light and a second light emitting element which emits green light,   the second light emitter includes a third light emitting element which emits red light, and   the lighting device supplies the constant current to the second light emitter while the first current is supplied to the first light emitter.   
     
     
         4 . The illuminating apparatus according to  claim 1 , wherein
 the lighting device includes:   a modulation circuit; and   a constant current power supply circuit which supplies the constant current to the modulation circuit and the second light emitter, wherein   the modulation circuit includes a capacitor connected in parallel to the modulation circuit, and   the modulation circuit supplies the first current to the first light emitter, the first current being obtained by modulating, according to the visible light communication signal, current supplied from the constant current power supply circuit.   
     
     
         5 . The illuminating apparatus according to  claim 4 , further comprising:
 a casing which houses the constant current power supply circuit and the modulation circuit.   
     
     
         6 . The illuminating apparatus according to  claim 4 , further comprising:
 a first casing which houses the constant current power supply circuit; and   a second casing which houses the modulation circuit and is different from the first casing.   
     
     
         7 . The illuminating apparatus according to  claim 1 , wherein
 the first light emitter blinks while the first current is supplied to the first light emitter, and   the second light emitter continues to emit light while the first current is supplied to the first light emitter.   
     
     
         8 - 14 . (canceled) 
     
     
         15 . A signboard, comprising:
 the illuminating apparatus according to  claim 1 , and   a display panel that is illuminated by the illuminating apparatus and includes at least one of a text character and a graphic.   
     
     
         16 . (canceled)