BACKLIGHT DEVICE FOR HEAD-UP DISPLAY

• Main Author: TAMURA KINYA
• Format: Patent
• Language: English; Japanese
• Published: 31.08.2020
• Subjects: ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES; ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; PERFORMING OPERATIONS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TRANSPORTING; VEHICLES IN GENERAL

To easily install a sensor, without spending costs, in particular.SOLUTION: A backlight 6 for a head-up display 2 includes a substrate 11 to which a light source 7 is attached and a reflector 13 which is disposed on the surface on the side of the light source 7 of the substrate 11 and includes an incident part 12 which surrounds the light source 7. In the vicinity of the incident part 12 of the reflector 13, a light taking-in part 32 for taking a part of light from the light source 7 into the member of the reflector 13 is provided and a light taking-out part 33 for taking out the light taken into the member of the reflector 13 from the light taking-in part 32 from a position facing the substrate 11 is provided. An illuminance sensor 34 is provided in the position on the substrate 11 facing the light taking-out part 33.SELECTED DRAWING: Figure 3 【課題】主に、コストをかけずにセンサーを容易に設置できるようにする。【解決手段】光源７が取付けられた基板１１と、基板１１の光源７側の面に配設されて、光源７を取り囲む入射部１２を有するリフレクタ１３とを備えたヘッドアップディスプレイ２用のバックライト６に関する。リフレクタ１３の入射部１２の近傍に、光源７からの光の一部をリフレクタ１３の部材内へ取り込む光取込部３２を設けると共に、光取込部３２からリフレクタ１３の部材内へ取り込まれた光を、基板１１と対向する位置から取り出す光取出部３３を設け、光取出部３３と対向する基板１１上の位置に照度センサー３４を設ける。【選択図】図３