Lighting apparatus
AssigneeLG Electronics Inc.
InventorTeajeong Ahn
Life of this patent
Estimating the term…
Abstract
A lighting apparatus including a body having a cavity, a plurality of LEDs, a substrate provided in the cavity and having a first surface and a second surface opposite the first surface. The plurality of LEDs provided on the first surface, a fan provided below the second surface to face the second surface, wherein the body includes a partition positioned between a side surface of the cavity and the substrate, the partition extending to the fan to form a first air passage between the side surface of the cavity and the partition and a second air passage between the partition and the substrate, and wherein the first air passage is in communication with a first side of the fan and the second air passage is in communication with a second side of the fan.
Claims15
A lighting apparatus comprising:
- a body having a cavity;
- a plurality of LEDs;
- a substrate provided over the body and having a first surface and a second surface opposite the first surface, the plurality of LEDs provided on the first surface;
- a fan provided below the substrate to face the second surface;
- a heat sink provided over the fan;
- an electric module provided in the cavity below the fan;
- and
- a divider having a ring shape positioned between the heat sink and the fan to form a first air passage along the body and a second air passage along the substrate,
- wherein the first air passage is in communication with a first side of the fan and the second air passage is in communication with a second side of the fan, and
- wherein the body includes at least one opening formed on a side surface of the body such that external air introduced to an inside of the body through the at least one opening passes through the electric module,
- wherein the divider has a bowl shape or cone shape, and a diameter of the divider gradually decreases from the heat sink to the fan, and
- wherein the diameter of the divider is greatest where the divider contacts with the heat sink and smallest where the divider contacts with the fan,
- wherein the heat sink includes a first wall provided around substrate, a second wall provided around the first wall, a third wall provided around the second wall, the first and second wall forming a portion of the second air flow passage and the second and third walls forming a portion of the first air flow passage,
- wherein the first wall has a height higher than a height of the second wall, and the second wall has a height higher than a height of the third wall, and
- wherein lower ends of the first wall, the second wall and the third wall are positioned on a line parallel to the substrate.
A lighting apparatus comprising:
- a body having a cavity;
- a substrate provided over the body and having a plurality of LEDs provided on the substrate;
- a heat sink provided over the body;
- a light emitting module mounted on the heat sink;
- a fan provided below the heat sink in the body;
- and
- a divider positioned between the heat sink and the fan to form a first air passage along the body and a second air passage along the substrate;
- and
- an electric module provided in the cavity below the fan,
- wherein the heat sink includes
- a first surface provided around the light emitting module,
- a second surface provided around a circumference of the first surface and positioned a prescribed distance from the first surface, and
- a third surface provided around a circumference the second surface and positioned a prescribed distance from the second surface,
- wherein the fan circulates the air in the body from a first channel formed between the first and second surfaces to a second channel formed between the second and third surfaces, and
- wherein the first surface has a height higher than a height of the second surface, and the height of the second surface is higher than a height of the third surface,
- wherein the body includes at least one opening formed on a side surface of the body such that external air introduced to an inside of the body through the at least one opening passes through the electric module,
- wherein the divider has a bowl shape or cone shape, and a diameter of the divider gradually decreases from the heat sink to the fan,
- wherein the diameter of the divider is greatest where the diameter contacts with the heat sink and smallest where the diameter contacts with the fan, and
- wherein lower ends of the first surface, the second surface and the third surface are positioned on a line parallel to the substrate.
Dependencies are inferred from the claim text.