LIGHTING SYSTEM, BACK LIGHT AND LIQUID CRYSTAL DISPLAY DEVICE

• Main Author: ISHIWATARI TOMISHIGE
• Format: Patent
• Language: English
• Published: 21.04.1995
• Edition: 6
• Subjects: ADVERTISING; BASIC ELECTRIC ELEMENTS; BLASTING; CRYPTOGRAPHY; 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; DISPLAY; DISPLAYING; EDUCATION; ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS; ELECTRICITY; FREQUENCY-CHANGING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LABELS OR NAME-PLATES; LIGHTING; MECHANICAL ENGINEERING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; SIGNS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; WEAPONS

PURPOSE:To easily shield electromagnetic radiation noise by containing an electrodeless discharge lamp, a lighting circuit, and a light conductor in a single electromagnetic shieldable case. CONSTITUTION:A rectangular light conductor 13, a straight-shape electrodeless discharge lamp 14 approximately juxtaposed along the side surface of the light conductor 13, and a lighting circuit 15 for lighting the lamp 14 at high frequency are housed in parallel in the lateral direction inside a lamp case 12 formed into a flat box shape by using a conductor. Reflection surfaces 12b are disposed at the inner bottom surface and side surface of a containing recess 12a containing the light conductor 13 and the lamp 14 in the case 12, and a liquid crystal display panel 16 is fixedly mounted on the light conductor 13. The whole of the case 12 is grounded, thus shielding electromagnetic wave noise.