To provide a lighting device capable of suppressing the generation of noises and a head-up display device.SOLUTION: A lighting device comprises: a plurality of first light sources connected in parallel with each other; a plurality of second light source connected in parallel with each other; and a light source driving part that outputs a PWM signal Spwm1 as an example of a first PWM signal to the plurality of first light sources and outputs a PWM signal Spwm2 as an example of a second PWM signal to each second light source. The light source driving part sets a rising timing tup of a wavelength of the PWM signal Spwm1 and a falling timing tdw of the wavelength of the PWM signal Spwm2 at the same time.SELECTED DRAWING: Figure 5
【課題】ノイズの発生を抑制できる照明装置及びヘッドアップディスプレイ装置を提供する。【解決手段】照明装置は、互いに直列に接続される複数の第1光源と、互いに直列に接続される複数の第2光源と、複数の第1光源に第1PWM信号の一例であるPWM信号Spwm1を出力し、第2光源に第2PWM信号の一例であるPWM信号Spwm2を出力する光源駆動部と、を備える。光源駆動部は、PWM信号Spwm1の波形の立ち上がりタイミングtupとPWM信号Spwm2の波形の立ち下がりタイミングtdwを同時に設定する。【選択図】図5
LIGHTING DEVICE AND HEAD-UP DISPLAY DEVICE
照明装置及びヘッドアップディスプレイ装置
04.06.2020
Patent
Elektronische Ressource
Japanisch
IPC: | H05B ELECTRIC HEATING , Elektrische Heizung / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / F21V FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF , Funktionsmerkmale oder Einzelheiten von Leuchten oder Beleuchtungssystemen / G02B Optische Elemente, Systeme oder Geräte , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS / G09F DISPLAYING , Anzeigewesen |
LIGHTING DEVICE, HEAD-UP DISPLAY, AND METHOD FOR MANUFACTURING LIGHTING DEVICE
Europäisches Patentamt | 2023
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