Lighting device, vehicle headlamp, and vehicle

• Main Authors: FUKUI TAKAHIRO, OHORI TAKAHIRO, MURAKAMI MASANOBU
• Format: Patent
• Language: Chinese; English
• Published: 23.10.2018
• Subjects: ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY

The invention relates to a lighting device, a vehicle headlamp, and a vehicle. The lighting device(1) lights an illumination load(2) in which a first light source block(21) and a second light source block(22) are coupled in series. The lighting device(1) includes a switch unit(120) coupled in parallel with the second light source block(22). The switch unit(120) includes a series circuit of a switching elemen(121)t and a resistor(122). The lighting device(1) keeps the switching element(121) off to set a state of the illumination load(2) to a first state. The lighting device(1) keeps the switching element(121) on to set the state of the illumination load(2) to a second state. The resistor(122) has its resistance allowing a value of a voltage across the switch unit(120) to be smaller than a value of a voltage across the second light source block(22) which causes the second light source block(22) to light while the switching element(120) is on. 本发明涉及种点亮装置、车辆用前照灯和车辆。点亮装置(1)使第光源块(21)和第二光源块(22)串联耦接的照明负载(2)点亮。点亮装置(1)