Abstract: A ventilation apparatus includes a compressor; a first heat exchanger configured to function as a condenser or an evaporator; a first air flow path configured to supply air taken in from outdoors to an indoor space after passing through the first heat exchanger; a second heat exchanger configured to function as a condenser or an evaporator; a second air flow path configured to exhaust air taken in from the indoor space to the outdoors after passing through the second heat exchanger; a refrigerant circuit through which a refrigerant flows, the refrigerant circuit being connected to the compressor, the first heat exchanger, and the second heat exchanger by a refrigerant pipe; and a control unit configured to guide a flow of air in the indoor space to the second heat exchanger when the second heat exchanger is determined to be in a frosted state, to increase a temperature of the second heat exchanger, and configured to output a predetermined instruction to an actuator configured to control a state of the refrige

Abstract: A light-emitting device includes a base member having a recess inside which a light-emitting element is disposed; and a light-reflective member continuously disposed on an upper surface of the bottom portion and at least a portion of an inner lateral surface of a wall portion inside the recess of the base member, in a cross-sectional view, the inner lateral surface of the wall portion having a first surface, a second surface located above the first surface, and a third surface connecting the first surface and the second surface, a shortest distance between the second surface and the light-emitting element being larger than a shortest distance between the first surface and the light-emitting element, the third surface being located below an upper surface of the light-emitting element, and an upper end of the light-reflective member being located below an upper surface of the wall portion.

Abstract: A light emitting device includes a package having an upper surface and an upward-opening recess defined in a portion of the upper surface, at least one light-emitting element in the recess, a light-transmissive member covering the opening of the recess, and an antireflection film on a lower surface of the light-transmissive member, the antireflection film located between the lower surface of the light-transmissive member and an upper surface of the package at a location where a portion of the lower surface of the light-transmissive member is bonded to the upper surface of the package via the antireflection film. A coating film is disposed on at least a portion of an outer surfaces of the light emitting device, the portion including a region where the antireflection film located between the lower surface of the light-transmissive member and the upper surface of the package is exposed.

Abstract: A light emitting device includes a light emitting element and a light reflecting member that reflects light emitted from the light emitting element. The light reflecting member comprises plate-shaped light reflective particles, silica, and an alkali metal. An average particle size of the light reflective particles is 0.6 ?m to 43 ?m, and an average aspect ratio of the light reflective particles is 10 or higher.

Abstract: A light emitting device includes a package having an upper surface and an upward-opening recess defined in a portion of the upper surface, at least one light-emitting element in the recess, a light-transmissive member covering the opening of the recess, and an antireflection film on a lower surface of the light-transmissive member, the antireflection film located between the lower surface of the light-transmissive member and an upper surface of the package at a location where a portion of the lower surface of the light-transmissive member is bonded to the upper surface of the package via the antireflection film. A coating film is disposed on at least a portion of an outer surfaces of the light emitting device, the portion including a region where the antireflection film located between the lower surface of the light-transmissive member and the upper surface of the package is exposed.

Abstract: A light emitting device includes a package having an upper surface and an upward-opening recess defined in a portion of the upper surface, at least one light-emitting element in the recess, a light-transmissive member covering the opening of the recess, and an antireflection film on a lower surface of the light-transmissive member, the antireflection film located between the lower surface of the light-transmissive member and an upper surface of the package at a location where a portion of the lower surface of the light-transmissive member is bonded to the upper surface of the package via the antireflection film. A coating film is disposed on at least a portion of an outer surfaces of the light emitting device, the portion including a region where the antireflection film located between the lower surface of the light-transmissive member and the upper surface of the package is exposed.

Abstract: A light emitting device includes a package having an upper surface and an upward-opening recess defined in a portion of the upper surface, at least one light-emitting element in the recess, a light-transmissive member covering the opening of the recess, and an antireflection film on a lower surface of the light-transmissive member, the antireflection film located between the lower surface of the light-transmissive member and an upper surface of the package at a location where a portion of the lower surface of the light-transmissive member is bonded to the upper surface of the package via the antireflection film. A coating film is disposed on at least a portion of an outer surfaces of the light emitting device, the portion including a region where the antireflection film located between the lower surface of the light-transmissive member and the upper surface of the package is exposed.

Abstract: A light-emitting device includes a substrate including a substrate second upper surface provided between a substrate bottom surface and a substrate first upper surface in a height direction. A light-emitting element to emit ultraviolet light is provided on the substrate first upper surface. A protective element includes a protective element upper surface provided between the substrate first upper surface and the substrate second upper surface in the height direction. A frame is bonded to the substrate first upper surface via adhesive members to surround the light-emitting element. The frame includes a frame lower surface opposite to the substrate first upper surface and the substrate second upper surface in the height direction to provide a gap between the substrate first upper surface and the frame lower surface. A space in which the light-emitting element is provided communicates with an outside of the light-emitting device via the gap.

Abstract: A light emitting device and light emitting module using the same are provided. The light emitting device includes a substrate, a light-emitting element provided on the substrate, and a light transmissive sealing member covering the light-emitting element on the substrate. The light transmissive sealing member includes a body portion and a lens portion that are sequentially disposed from a substrate side.

Abstract: A light-emitting device includes a substrate including a substrate second upper surface provided between a substrate bottom surface and a substrate first upper surface in a height direction. A light-emitting element to emit ultraviolet light is provided on the substrate first upper surface. A protective element includes a protective element upper surface provided between the substrate first upper surface and the substrate second upper surface in the height direction. A frame is bonded to the substrate first upper surface via adhesive members to surround the light-emitting element. The frame includes a frame lower surface opposite to the substrate first upper surface and the substrate second upper surface in the height direction to provide a gap between the substrate first upper surface and the frame lower surface. A space in which the light-emitting element is provided communicates with an outside of the light-emitting device via the gap.

Abstract: A light emitting device and light emitting module using the same are provided. The light emitting device includes a substrate, a light-emitting element provided on the substrate, and a light transmissive sealing member covering the light-emitting element on the substrate. The light transmissive sealing member includes a body portion and a lens portion that are sequentially disposed from a substrate side.