Provided is an audio reproduction device including: a light source provided in the vicinity of a speaker unit; a detection unit that detects a beat of an audio signal reproduced by the speaker, and outputs a detection signal corresponding to the beat; and a light emission control signal output unit that controls a light emission mode of the light source in accordance with the detection signal, and outputs a light emission control signal for allowing generation of white light for a short period at a peak of intensity of the light source.

A LED lamp and an optical lens thereof are provided. The LED lamp includes a LED light source and an optical lens covering the LED light source. The optical lens includes a dome structure and a protrusion structure. The dome structure has an external surface. The protrusion structure is disposed protruding from the external surface and includes oppositely-disposed first and second side surfaces. The first side surface includes first and second optical surfaces. The second side surface includes a third optical surface. The second optical surface is connected immediately to the external surface and further connected between the external surface and the first optical surface. A boundary line of the second and the first optical surfaces is not disposed at the external surface. The third optical surface and the external surface are immediately connected. Accordingly, local uniformity of light distribution of the optical lens is improved.

A light emitting device including a board, light emitting elements, a wavelength conversion member, and first and second metal plates. The board has a first surface and an opposite second surface, and is longer in a first direction than in a second direction perpendicular to the first direction. The light emitting elements are mounted on the first surface and are arrayed in a row along the first direction. The wavelength conversion member includes a first portion covering the light emitting elements and a second portion covering the second surface. The light emitting elements includes a first light emitting element located closest to the first metal plate, and a second light emitting element located closest to the second metal plate. The light emitting elements on the first surface are located between a first end surface of the first metal plate and a first end surface of the second metal plate.

This invention includes a base having open sides and an open bottom, a housing keeping a printed circuit board having an LED module thereon, and connected to a side of the base, and a base cover coupled to the lower portion of the base to fix the connection of the side of the base and the housing. According to this invention, it is possible to install a lamp including an LED module even without a specific skill in accordance with desired indoor illumination requirement, thus there is no need for unnecessary work for installing a housing for the LED lamp. Therefore, it is possible to remarkably reduce the cost for to installation and to install an LED lamp in accordance with desired indoor illumination requirements. Further, there is no need for installing a base on a ceiling, so an interior effect can be maximized and sufficient indoor illumination can be ensured.

A light emitting device with improved safety in which leaking laser beam from a slit is converted into a visible light. A light emitting device includes a laser light source part and optical member that defines a slit. The optical member is disposed with the slit oriented on an optical path of the laser beam, while disposing a wavelength converting member on an inner wall defining the slit to convert a wavelength of the laser beam into a long-wavelength side visible light.

A cooling fan (1) for cooling an electronic device (2) is disclosed. The cooling fan (1) comprises a heat sink (5) thermally connectable to the electronic device (2), the heat sink (5) having a first clearance side (6a, 6b) centered relative to a longitudinal axis (L) of the heat sink (5), and several thermally conductive fan blades (13) arranged in a circle centered on the longitudinal axis (L). The fan blades (13) are rotatable relative to the heat sink (5)about the longitudinal axis (L) by a motor (19) and each fan blade (13) has a second clearance side (14) facing the first clearance side (6a, 6b). A clearance space (18) is provided between the first clearance side (6) and each second clearance side (14),the majority of said clearance spaces(18) having a size of 100 micrometer or less in a direction perpendicular to the first clearance side (6a, 6b) and the corresponding second clearance side (18).

Apparatus and methods for lighting. The apparatus may include an LED light source. The light source may be disposed in housing. The apparatus may include a circuit. The circuit may be configured to cause the LED light source to emit light at: a first intensity; and a second intensity that is different from the first intensity. The apparatus may include a mechanical power state selector. A user may use the power state selector to select between LED light sources that are arranged to illuminate in different directions. The apparatus may include a CCT state selector. A user may use the CCT state selector to select a CCT for one or more LED light sources. The CCT may be produced by combining light from one or more LEDs of different CCTs.

An illumination device (e.g., an electric candle, etc.) generally includes a shell, a housing coupled to the shell, a first light source, and a pendulum supporting the first light source generally above the housing, wherein the pendulum is pivotally coupled to the housing and configured to move the first light source relative to the housing. The device also includes a flame-shaped head, where the first light source is disposed within the flame-shaped head, and a second light source arranged inside the shell and configured to illuminate the shell from the inside out. A printed circuit board assembly is arranged inside the shell for controlling operation of the first light source and the second light source.

In accordance with certain embodiments, systems of lighting components feature multiple illumination panels each having a backing support and, secured thereto, multiple illumination elements. The illumination elements have shapes defined by arrangements of illumination unit cells may be assembled to illuminate an arbitrary two-dimensional area.

A lighting fixture appears as a skylight and is referred to as a skylight fixture. The skylight fixture has a sky-resembling assembly and a plurality of sun-resembling assemblies. The sky-resembling assembly has a sky-resembling optical assembly and a sky-specific light source, wherein light from the sky-specific light source exits a planar interior surface of the sky-resembling light optical assembly as skylight light. The plurality of sun-resembling assemblies are arranged adjacent one another and extend downward from a periphery of the sky-resembling assembly. Each of the plurality of sun-resembling assemblies has a sun-resembling optical assembly and a sun-specific light source, wherein light from the sun-specific light source exits a planar interior surface of the sun-resembling optical assembly as sunlight light.