Abstract: A light source includes first to nth light emitting modules (n is a natural number that is two or more than two) each having a plurality of light emitting elements and connectors that are electrically connected to the light emitting elements. The connector of the first light emitting module is disposed near an angular point (hereinafter, referred to as “rotational central point”) of a region defining the first light emitting module. The light emitting elements and connector of the ith light emitting module has a layout structure defined by a clockwise or counter-clockwise rotation of the light emitting elements and connectors of the first light emitting module by an angle (i?1)/n×360° about the rotational central point, wherein i is a natural number which satisfies 2?i?n.

Abstract: The present invention relates to a radiating member of an LED illumination device and the LED illumination device using the same. Provided is an LED illumination device includes a printed circuit board mounted with LED chips; and a radiating member provided on a rear surface of the printed circuit board, wherein the radiating member includes a radiating pipe vertically attached to a center of the printed circuit board, radiating pins surrounding and attached to the printed circuit board at a predetermined interval, radiating disks provided below the radiating fins and arranged along the radiating pipe at a predetermined interval, and a radiating member case for covering the radiating member.

Abstract: Provided is a chemical vapor deposition apparatus including a reaction chamber; a susceptor that is provided in the reaction chamber and has a plurality of wafers mounted thereon; a rotation driving unit that rotates the susceptor; a gas inlet that is provided in the reaction chamber and introduces reaction gas into the reaction chamber from the outside of the reaction chamber; a gas outlet that is provided in the reaction chamber and discharges the reaction gas, of which the reaction is finished, from the inside of the reaction chamber along the rotation-axis direction of the susceptor; and a variable gas-flow adjusting unit that is provided between the gas inlet and the gas outlet and is formed by superimposing a plurality of gas jetting plates having a plurality of holes.

Abstract: A light source includes first to nth light emitting modules (n is a natural number that is two or more than two) each having a plurality of light emitting elements and connectors that are electrically connected to the light emitting elements. The connector of the first light emitting module is disposed near an angular point (hereinafter, referred to as “rotational central point”) of a region defining the first light emitting module. The light emitting elements and connector of the ith light emitting module has a layout structure defined by a clockwise or counter-clockwise rotation of the light emitting elements and connectors of the first light emitting module by an angle (i?1)/n×360° about the rotational central point, wherein i is a natural number which satisfies 2?i?n.

Abstract: Provided is a chemical vapor deposition apparatus including a reaction chamber; a susceptor that is provided in the reaction chamber and has a plurality of wafers mounted thereon; a rotation driving unit that rotates the susceptor; a gas inlet that is provided in the reaction chamber and introduces reaction gas into the reaction chamber from the outside of the reaction chamber; a gas outlet that is provided in the reaction chamber and discharges the reaction gas, of which the reaction is finished, from the inside of the reaction chamber along the rotation-axis direction of the susceptor; and a variable gas-flow adjusting unit that is provided between the gas inlet and the gas outlet and is formed by superimposing a plurality of gas jetting plates having a plurality of holes.

Abstract: The present invention relates to a radiating member of an LED illumination device and the LED illumination device using the same. Provided is an LED illumination device includes a printed circuit board mounted with LED chips; and a radiating member provided on a rear surface of the printed circuit board, wherein the radiating member includes a radiating pipe vertically attached to a center of the printed circuit board, radiating pins surrounding and attached to the printed circuit board at a predetermined interval, radiating disks provided below the radiating fins and arranged along the radiating pipe at a predetermined interval, and a radiating member case for covering the radiating member.