JP2013118199A5

JP2013118199A5 -

Info

Publication number: JP2013118199A5
Application number: JP2013056964A
Authority: JP
Filing date: 2013-03-19
Publication date: 2014-01-23

Description

実施形態によれば、照明装置は、基板と、前記基板上に載置された光源と、前記光源から出射した光が入射する入光部を有した導光領域と、前記導光領域を経た光を外部へ出射する照射領域と、を有した導光体と、を備え、
前記導光体は、内側に前記基板が載置された筒状に形成され、前記導光領域は、前記基板の前記光源が載置された側に位置し、前記照射領域は、前記光源が載置された側と前記基板を介した反対側に位置し、前記導光体の前記導光領域における前記入光部側端部の厚さが、前記照射領域における前記導光体の厚さよりも厚く形成されている。 According to the embodiment, the illuminating device passes through the substrate, the light source placed on the substrate, a light guide region having a light incident portion on which light emitted from the light source is incident, and the light guide region. A light guide having an irradiation region for emitting light to the outside,
The light guide is formed in a cylindrical shape on which the substrate is placed, the light guide region is located on a side of the substrate on which the light source is placed, and the irradiation region is formed by the light source The thickness of the light incident part side end in the light guide region of the light guide is located on the opposite side of the light guide from the placed side, and the thickness of the light guide in the irradiation region. Is also formed thick.

図１において、ＬＥＤ１６からの主たる光放出方向は、基板１４の表面に対して垂直上方であり、このＬＥＤ１６から出射された光は、入光部２４から導光体１８に入射する。入射した光は、導光体１８内で反射を繰り返しながら伝播し、導光体１８の内部を導光するうちに筒をグルリと反転してクサビ状の照射領域３０から下向きに外部に放出される（図１中に矢印で示す）。 In FIG. 1, the main light emission direction from the LED 16 is vertically upward with respect to the surface of the substrate 14, and the light emitted from the LED 16 enters the light guide 18 from the light incident portion 24 . The incident light propagates while being repeatedly reflected in the light guide 18, and while being guided inside the light guide 18, the tube is inverted and is emitted outward from the wedge-shaped irradiation region 30. (Indicated by an arrow in FIG. 1).

Claims

A substrate,
A light source mounted on the substrate;
A light guide body including a light guide region having a light incident portion on which light emitted from the light source is incident , and an irradiation region emitting light that has passed through the light guide region to the outside , and
The light guide is formed in a cylindrical shape on which the substrate is placed,
The light guide region is located on a side of the substrate on which the light source is placed;
The irradiation region is located on the side opposite to the side on which the light source is placed and the substrate,
The lighting device , wherein a thickness of the light incident portion side end portion in the light guide region of the light guide is formed to be thicker than a thickness of the light guide in the irradiation region .

The illumination device according to claim 1, wherein the irradiation region is curved, and light passing through the light guide region is emitted from the irradiation region in a direction from the inside to the outside of the curved irradiation region .

The lightguide of claim 1, characterized in that it has a plurality of stepped portions to control the direction of the formed on the outer surface of the irradiated region the light emitted from the irradiation region in a specific direction Lighting device.

The lighting device according to claim 1, wherein the light guide has a recess formed in an outer surface of the irradiation region.

The lightguide lighting device according to claim 1, characterized in that it comprises an opening formed at a position opposed through the light source and the substrate of the irradiation region.

The light source has a plurality of point light sources arranged in a line at predetermined intervals in the axial direction of the cylindrical light guide, and the interval between the point light sources is the cylindrical light guide. The lighting device according to claim 1 , wherein the lighting device is smaller than a radius in a cross section .

The illumination device according to claim 1 , wherein the irradiation region is formed of a material containing a diffusing material and has a transmittance of 80 to 95% at a plate thickness of 2 mm.

The lighting device according to claim 1, wherein the light guide and the light source are linearly arranged in one direction, and the light guide has a straight tube shape.