Abstract: The disclosure provides a heat dissipation device including a first fin structure and a heat conduction member. The first fin structure includes a first substrate and a plurality of first fins extending from the first substrate, the first fins include a plurality of first ends and a plurality of second ends. The plurality of first ends and the plurality of second ends are opposite to each other. The first ends are connected to the first substrate. The second ends are away from the first substrate, and the second ends contact the heat conduction member. The disclosure also provides a projector with the heat dissipation device. Through the heat dissipation device, the projector can achieve a good heat dissipation effect.

Abstract: A projector cooling system, including a casing, a first heat generating component, and a second heat generating component, is provided. The first heat generating component and the second heat generating component are sequentially disposed in the casing along an anti-gravity direction. A temperature of the first heat generating component is lower than a temperature of the second heat generating component. The projector cooling system of the invention is adapted to introduce more cooling airflow without using a moving part, thereby reducing the temperatures of the heat generating components.

Abstract: A heat dissipation module and a projection apparatus are provided. The heat dissipation module dissipates the heat generated by a plurality of heating elements, includes a heat pipe, a heat dissipation plate, a first and a second heat dissipation fins. The heat pipe includes a first portion of the heat pipe passes through the first heat dissipation fin and a second portion of the heat pipe passes through the second heat dissipation fin and a third portion connected with the first and the second portions. The third portion of the heat pipe and the heating elements are connected to the heat dissipation plate. The heat generated by the heating elements is dissipated by the heat dissipation plate, the first and the second heat dissipation fins through thermal conduction method and thermal convection method. The invention saves accommodating space in the projection apparatus and has an efficient heat dissipation effect.

Abstract: The invention provides a projection device. The projection device includes a housing, an optical engine, a projection lens, a plurality of first fans and a heat dissipating module. The housing has an air inlet and an air outlet. The optical engine is configured in the housing, and includes a plurality of heating elements. The projection lens is connected to the optical engine. The heat dissipating module is configured in the housing, and the heat dissipating module includes a first heat dissipating fin. One of the plurality of first fans is adjacent to the first heat dissipating fin, and another of the plurality of first fans is away from the first heat dissipating fin. There is no the first heat dissipating fin between the air inlet and the another, away from the first heat dissipating fin, of the plurality of first fans.

Abstract: The disclosure provides a heat dissipation device including a first fin structure and a heat conduction member. The first fin structure includes a first substrate and a plurality of first fins extending from the first substrate, the first fins include a plurality of first ends and a plurality of second ends. The plurality of first ends and the plurality of second ends are opposite to each other. The first ends are connected to the first substrate. The second ends are away from the first substrate, and the second ends contact the heat conduction member. The disclosure also provides a projector with the heat dissipation device. Through the heat dissipation device, the projector can achieve a good heat dissipation effect.

Abstract: The invention provides a projection device. The projection device includes a housing, an optical engine, a projection lens, a plurality of first fans and a heat dissipating module. The housing has an air inlet and an air outlet. The optical engine is configured in the housing, and includes a plurality of heating elements. The projection lens is connected to the optical engine. The heat dissipating module is configured in the housing, and the heat dissipating module includes a first heat dissipating fin. One of the plurality of first fans is adjacent to the first heat dissipating fin, and another of the plurality of first fans is away from the first heat dissipating fin. There is no the first heat dissipating fin between the air inlet and the another, away from the first heat dissipating fin, of the plurality of first fans.

Abstract: A heat dissipation module and a projection apparatus are provided. The heat dissipation module dissipates the heat generated by a plurality of heating elements, includes a heat pipe, a heat dissipation plate, a first and a second heat dissipation fins. The heat pipe includes a first portion of the heat pipe passes through the first heat dissipation fin and a second portion of the heat pipe passes through the second heat dissipation fin and a third portion connected with the first and the second portions. The third portion of the heat pipe and the heating elements are connected to the heat dissipation plate. The heat generated by the heating elements is dissipated by the heat dissipation plate, the first and the second heat dissipation fins through thermal conduction method and thermal convection method. The invention saves accommodating space in the projection apparatus and has an efficient heat dissipation effect.

Abstract: A light source module includes a light source having an optical axis, a fan for providing a cooling airflow and a deflector disposed between the light source and the fan and directing a flowing direction of the cooling airflow. The deflector includes a first air duct connected between a first side of the light source and an air outlet of the fan, a second air duct connected between a second side of the light source and the air outlet of the fan, and a first airflow control assembly controlling the first air duct in a communicating state or a non-communicating state and having a first control shaft and a first airflow passing portion rotating about the first control shaft. The first control shaft is inclined to the optical axis so that a first angle is formed therebetween. The first angle is between 0 and 90 degrees.

Abstract: A projector includes a light source module, a light valve, and a projection lens. The light source module includes a substrate, at least one light emitting element, a heat conducting structure, and at least one electricity insulating and heat conducting element. The light emitting element is disposed on the substrate, and has a conductive portion. The light emitting element provides an illumination beam. The heat conducting structure has at least one concave. The substrate is disposed in the at least one concave, and the conductive portion is located in the concave. The electricity insulating and heat conducting element is disposed in the concave, and covers the substrate and the conductive portion. The light valve is disposed on a transmission path of the illumination beam, and converts the illumination beam to an image beam. The projection lens is disposed on a transmission path of the image beam.

Abstract: A light source module includes a light source having an optical axis, a fan for providing a cooling airflow and a deflector disposed between the light source and the fan and directing a flowing direction of the cooling airflow. The deflector includes a first air duct connected between a first side of the light source and an air outlet of the fan, a second air duct connected between a second side of the light source and the air outlet of the fan, and a first airflow control assembly controlling the first air duct in a communicating state or a non-communicating state and having a first control shaft and a first airflow passing portion rotating about the first control shaft. The first control shaft is inclined to the optical axis so that a first angle is formed therebetween. The first angle is between 0 and 90 degrees.