Citizen Electronics Co., Ltd.

Citizen Holdings Company, Ltd.

Yamaha Hatsudoki Kabushiki Kaisha

Masato Yazaki

Takakazu Yano

Junji Terada

Masatoshi Sasuga

Motokuni Nishiyama

Mitsunori Miyamoto

In a first aspect of the present invention, a lighting device includes a light-emitting element, a phosphor layer including a phosphor and spaced from the light-emitting element, and a light-transmitting layer with thermal conductivity that is higher than thermal conductivity of the phosphor layer, the light-transmitting layer disposed in contact with the phosphor layer. It is disclosed that the phosphor layer has first and second surfaces opposite to each other. In some embodiments, the light-transmitting layer that transmits light emitted from the light-emitting element is disposed on the first surface of the phosphor layer. It is also disclosed that the first light-transmitting layer that transmits light emitted from the light-emitting element is disposed on the first surface of the phosphor layer and a second light-transmitting layer that transmits visible light is disposed on the second surface of the phosphor layer.

Lighting device including phosphor layer and light-transmitting layer that is arranged in contact with the phosphor layer to release static charge to substrate

Growing community of inventors

Yamanashi-ken, Japan

Masato Yazaki