| 摘要 |
Provided is a light-weight LED projector which does not use a forced cooling means or heat dissipation structure having a complex configuration, and which has a relatively simple structure and also easy assembly. In one lateral surface, the main body (1) of this LED projector has an opening of a recessed groove (1E) which is formed longitudinally by extrusion molding of a metal material and which has a U-shape in transverse cross section. The LED projector has one or multiple LED units (6) which are attached to the central portion of the inner bottom wall (1F) of the main body (1) in which the recessed groove (1E) is formed. The main body (1) has one or multiple ventilation holes (2) which are formed by extrusion molding in the back surface side of the inner bottom wall (1F) of the recessed groove (1E) and which are parallel to the extrusion direction and opened at the top and bottom ends. A region (1D) with a large thermal capacity is provided between the ventilation holes (2) and the inner bottom wall (1F) to which the LED units (6) are attached. By turning the LED units (6) ON in the installation orientation, in which the longitudinal direction of the ventilation holes (2) runs in the up-down direction, a heat-removing chimney effect is achieved in which the heat conducted from the LED units (6) is transferred to the airflow rising through the ventilation holes (2). |
