Abstract: A light-emitting device of a very simple configuration in which uniform LED light illumination can be obtained with a low light quantity loss, the device having a low production cost, improved emission characteristic and excellent cost efficiency and reliability. A transparent body is disposed in the vicinity of a LED, and a light-scattering layer that scatters the light of the LED is formed by coating on the light-illuminating surface of the transparent body through which the light of the LED passes. The light-scattering layer contains 2.5 parts by weight to 4 parts by weight of a filler and has a thickness of 5 ?m to 20 ?m.

Abstract: The present invention aims at: emitting a uniform light on the whole with a high luminance to provide a required bright illumination; suppressing increase of temperature and reducing power consumption; and permitting easy alteration of entire shape and size thereof. A light emission device 10 is provided, which comprises: a transparent element 30 of columnar shape having a substantially circular shape in section; a light cover 12 attached on outer surface of the transparent element 30 so as to securely sandwich and retain that particular outer surface of transparent element; and a plurality of LEDs 22 for applying lights to the transparent element 30, the plurality of LEDs 22 being provided in the light cover 12. Such LEDs 22 are disposed relative to said transparent element 30, such that a predetermined space I is essentially given between the LEDs 22 and the surface of the transparent element 30.

Abstract: A light-emitting device of a very simple configuration in which uniform LED light illumination can be obtained with a low light quantity loss, the device having a low production cost, improved emission characteristic and excellent cost efficiency and reliability. A transparent body is disposed in the vicinity of a LED, and a light-scattering layer that scatters the light of the LED is formed by coating on the light-illuminating surface of the transparent body through which the light of the LED passes. The light-scattering layer contains 2.5 parts by weight to 4 parts by weight of a filler and has a thickness of 5 ?m to 20 ?m.

Abstract: A light-emitting sign device is provided, in which optimum scattering of light from a light source is ensured, light loss can be reduced to a minimum, uniform and bright emission is made possible, and visibility and cost efficiency are improved. A sign plate having a sign surface is provided, and a light-diffusing plate, light guide plate, and white reflecting plate are arranged in this order on the rear surface of the sign plate. A light-scattering layer that scatters the light from the light source is coated on the rear surface of the light guide plate. The light-scattering layer has a binder layer composed of a coating composition using a transparent resin as a binder. A filler in the form of transparent and substantially spherical fine particles of silica is uniformly dispersed in the binder layer.