LIGHT-EMITTING DEVICE

• Main Authors: TANAKA YOSHIHARU, FUKUI HIROTAKA
• Format: Patent
• Language: English; Japanese
• Published: 19.03.2020
• Subjects: BLASTING; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

To provide a narrow-width light-emitting device to be used as a linear light source using a stick type light guide and having waterproofness.SOLUTION: According to one embodiment of the present invention, a light-emitting device 1 includes: a light emitting element 14; a stick type light guide 10 having a light guide region 10a and a lens region 10b continued between both ends in which the light guide region 10a is a region for propagating light emitted from the light-emitting element 14 to the inside and the lens region 10b is a region having a light extraction surface 10d for extracting light propagated in the light guide region 10a to the outside on the opposite side of the light guide region 10a; a first cover 11 for covering the surface of the light guide region 10a through an air layer 18; and a second cover 12 covering the first cover 11 and adhered to a side surface 10f of the lens region 10b so as to close the air layer 18.SELECTED DRAWING: Figure 4 【課題】棒状の導光体を用いた線状光源としての発光装置であって、防水性を有する、幅の小さい発光装置を提供する。【解決手段】本発明の一態様として、発光素子１４と、両端の間に連続する導光領域１０ａ及びレンズ領域１０ｂを有し、導光領域１０ａが、発光素子１４から発せられた光を内部に伝播させる領域であり、レンズ領域１０ｂが、導光領域１０ａの内部を伝播する光を外部に取り出すための光取出面１０ｄを導光領域１０ａの反対側に有する領域である、棒状の導光体１０と、空気層１８を介して導光領域１０ａの表面を覆う第１のカバー１１と、第１のカバー１１を覆い、空気層１８を密閉するようにレンズ領域１０ｂの側面１０ｆに密着する第２のカバー１２と、を有する、発光装置１を提供する。【選択図】図４