Lighting device having reflectors for indirect light emission

A lighting device comprising:

• a heat sink comprising a base including a heat radiating fin, and a member which extends from the base and has at least one lateral surface;
• and
• a light source module disposed on the lateral surface of the member of the heat sink and comprising a light emitting device,;
• a reflector which is disposed on a top surface of the member;
• and
• a light transmission enclosure coupled to base, and covering the member, the light source and the reflector;
• wherein the heat radiating fin comprises an upper portion and a lower portion, wherein a width of the upper portion of the heat radiating fin increases with the approach to a lower portion of the base from an upper portion of the base, wherein a width of the lower portion of the heat radiating fin decreases with the approach to the lower portion of the base from the upper portion of the base,
• and wherein the upper portion of the heat radiating fin is disposed under a light distribution area of light emitted from the light source module and is not overlapped with the light distribution area.

A lighting device comprising:

• a heat sink comprising a base and a member disposed on the base;
• a light source module disposed on a lateral surface of the member of the heat sink;
• a light transmission enclosure coupled to base, and covering the member and the light source module;
• a housing which is disposed in the base of the heat sink and inside the member of the heat sink and is formed of a material having electrical insulation;
• and
• a power supply which is received inside the housing and the member, and supplies electrical power to the light source module,
• wherein the housing comprises an upper housing and a lower housing, wherein the upper housing is surrounded by the member of the heat sink, wherein the lower housing is surrounded by the base of the heat sink,
• wherein the upper housing receives an upper portion of the power supply, and wherein the lower housing receives the rest a lower portion of the power supply.

A lamp, comprising:

• an optically transmissive enclosure defining a hollow interior;
• a heat sink including an extension having a plurality of walls extending in a first direction into the hollow interior, the plurality of walls forming a through hole extending from a lower end of the extension to an upper end of the extension;
• a plurality of first light emitting devices provided over a first wall of the plurality of walls;
• a connector configured to receive electric power from an external power source;
• a power circuitry extending in the first direction, wherein the power circuitry extends into the through hole from the lower end of the extension;
• a base in which the power circuitry is provided;
• wherein the optically transmissive enclosure transmits a light from the plurality of the first light emitting devices.