Koito Manufacturing Company, Ltd.

Shogo Sugimori

Hisayoshi Daicho

Yasuaki Tsutsumi

Osamu Kuboyama

Masayasu Ito

Hitoshi Takeda

Tatsuya Matsuura

Yu Shinomiya

Masanobu Mizuno

Akihiro Nomura

Takaaki Komatsu

Yuzo Maeno

Yuji Higashi

Kazuhiro Ito

Toshio Yagi

A lamp includes a plurality of semiconductor light-emitting elements arrayed linearly, an aluminum substrate on which the plurality of light-emitting elements are mounted, and a linear light wavelength conversion member disposed separated from light-emitting surfaces of the plurality of light-emitting elements. The aluminum substrate includes a circuit formed such as to be able to switch on/off the plurality of light-emitting elements, as grouped into a plurality of sets, on a per-set basis in which the sets are composed of either one or a plurality of the light-emitting elements.

Lamp

A semiconductor light-emitting device has a substrate, one or more semiconductor light-emitting elements provided on the substrate, and that emit light having a peak wavelength in a 380 nm to 480 nm wavelength region, and a molded member covering the semiconductor light-emitting element, and containing a phosphor that emits visible light by being excited by the emitted light from the semiconductor light-emitting element. The molded member is formed so that index A=H/(s/n) satisfies 0.3&#x2266;A&#x2266;6, where H is the height [mm] of the molded member from the substrate, s is the square root [mm] of the contact area between the substrate and the molded member, and n is the number of the semiconductor light-emitting elements covered with the molded member.

Semiconductor light-emitting device

The light emitting module includes a plurality of light emitting elements; a fluorescent substance resin layer containing a fluorescent substance which is excited by light emitted from the plurality of light emitting elements to emit visible light; a reflective surface configured to reflect light emitted from the plurality of light emitting elements and the fluorescent substance resin layer; and a light guiding body layer provided between the reflective surface and the fluorescent substance resin layer, and configured to guide light emitted from the plurality of light emitting elements or the fluorescent substance.

Light emitting module

In a light emitting module, a red phosphor is contained in a second phosphor layer so that the wavelength of a second phosphor layer after the wavelength conversion is longer than that of a first phosphor layer. And a blue phosphor and a yellow-green phosphor are contained in the first phosphor layer. The first phosphor layer is formed in an illumination area of light emitted from an LED chip, and the first phosphor layer converts the wavelength of the light from the LED chip and emits the wavelength-converted light from an emission surface. A part of the second phosphor layer is formed in a non-direct area where no light is illuminated from the LED chip and where light is illuminated from the first phosphor layer. The part of the second phosphor layer formed in the non-direct illumination area converts the wavelength of the light emitted from the first phosphor layer.

In a light emission module (), a light wavelength conversion ceramic () is formed in a sheet shape which converts the wavelength of the light emitted from a semiconductor light emission element () when emitting the light. The light wavelength conversion ceramic () has a tapered plane () which is inclined to approach the semiconductor light emission element () toward the brim portion. The light wavelength conversion ceramic () is transparent and is arranged so that the light emission wavelength band after the conversion has an all ray permeability of 40% or above.

Light emission module, light emission module manufacturing method, and lamp unit

In a light emitting module, light wavelength conversion ceramicconverts the wavelength of the light emitted by a semiconductor light emitting element. The light wavelength conversion ceramicis made so transparent that the light wavelength conversion ceramichaspercent or more of the total light transmittance of the light with a wavelength within the conversion wavelength range. A reflective filmis provided on the surface of the light wavelength conversion ceramicand narrows down the emission area of the light that has transmitted the light wavelength conversion ceramicto an area smaller than the light emitting area of the semiconductor light emitting element. In the case, the reflective filmguides the light such that the light is emitted in the direction approximately parallel to the light emitting surface of the light emitting element

Light emitting module, method of manufacturing the light emitting module, and lamp unit

There is provided a light emitting module. The light emitting module includes: a semiconductor light emitting element that emits light; and a plate-like optical wavelength conversion member that converts a wavelength of light emitted from the semiconductor light emitting element and emits light having the converted wavelength. The semiconductor light emitting element and the optical wavelength conversion member are directly bonded to each other.

Light emitting module and method of manufacturing the same

A vehicular lamp used in a vehicle, includes: a light source including a light-emitting diode for emitting light in accordance with power received from a power supply provided in the outside of the vehicular lamp; a lamp body for accommodating the light source therein to protect the light source from water; and a breaking detection unit for detecting breaking of the light source and notifying the outside of the lamp body of the detection result.

Growing community of inventors

Shizuoka, Japan

Shogo Sugimori