Cooled light source apparatus and projection type image display apparatus with noise-reducing fan system

A projection type image display apparatus having a light source apparatus generating white light by mixing blue light and yellow light, and an optical system modulating, by a display element, light generated based on the white light from the light source apparatus to project the modulated light onto an external projection surface, the projection type image display apparatus comprising:

• a heat sink having a bottom portion and a plurality of heat radiation fins extending from the bottom portion,
• one or more cooling fans arranged so as to cool the plurality of heat radiation fins of the heat sink,
• a light emitting element attached to the bottom portion of the heat sink and emitting blue light;
• and
• a phosphor attached to the bottom portion of the heat sink at a predetermined interval from the light emitting element and receiving the blue light to emit the yellow light,
• wherein one or more heat pipes conducting heat by repeating vaporization and liquefaction of working fluid is embedded in the bottom portion,
• each of the one or more heat pipes is provided with a section opposing the light emitting element in a thickness direction of the bottom portion,
• wherein a first surface and a second surface opposing the first surface are formed on the bottom portion,
• the plurality of heat radiation fins extend alongside from the first surface,
• the light emitting element is arranged on the second surface of the bottom portion,
• the phosphor is arranged on the second surface of the bottom portion at a predetermined interval from the light emitting element,
• each of the one or more heat pipes is provided with a section opposing the light emitting element in a normal direction of the second surface,
• wherein each of the one or more of heat pipes is not provided with a section opposing the phosphor in the normal direction of the second surface,
• wherein a shape of the second surface is a rectangle configurated by a first side and a second side opposing the first side,
• the light emitting element is arranged so as to be closer to a distance to the first side than a distance to the second side,
• the phosphor is arranged so as to be closer to a distance to the second side than a distance to the first side,
• the plurality of heat pipes have:
• a first heat pipe formed so as to return to the first side through a first section opposing the light emitting element from the first side;
• and
• a second heat pipe formed so as to return to the second side through a second section opposing the light emitting element from the second side, and
• the second heat pipe is not provided with a section opposing the phosphor in the normal direction of the second surface.

A light source apparatus having a light emitting element that emits blue light and a phosphor that receives the blue light to emit predetermined light, the light source apparatus comprising:

• a heat sink including a bottom portion and a plurality of heat radiation fins extending from the bottom portion;
• and
• one or more cooling fans arranged so as to cool the plurality of heat radiation fins of the heat sink,
• wherein the light emitting element is attached to the bottom portion of the heat sink,
• the phosphor is attached to the bottom portion of the heat sink at a predetermined interval from the light emitting element,
• one or more heat pipes that conducts heat by repeating vaporization and liquefaction of working liquid is embedded in the bottom portion, and
• each of the one or more heat pipes is provided with a section opposing the light emitting element in a thickness direction of the bottom portion,
• wherein a first surface and a second surface opposing the first surface are formed on the bottom portion,
• the plurality of heat radiation fins are extended alongside from the first surface,
• the light emitting element is arranged on the second surface of the bottom portion,
• the phosphor is arranged on the second surface of the bottom portion at a predetermined interval from the light emitting element,
• each of the one or more heat pipes is provided with a section opposing the light emitting element in a normal direction of the second surface,
• wherein each of the one or more heat pipes is not provided with a section opposing the phosphor in the normal direction of the second surface,
• wherein a shape of the second surface is a rectangle configured by a first side, a second side opposing the first side, a third side intersecting with the first side, and a fourth side opposing the third side,
• the light emitting element is arranged so as to closer to a distance to the first side than a distance to the second side,
• the phosphor is arranged so as to closer to a distance to the second side than a distance to the first side,
• the more heat pipes have:
• a third heat pipe formed so as to point to the second side through a third section opposing the light emitting element from the first side;
• and
• a fourth heat pipe formed at a position between the third heat pipe and the fourth side so as to point to the second side through a fourth section opposing the light emitting element from the first side, and
• each of the third heat pipe and the fourth heat pipe is not provided with a section opposing the phosphor in the normal direction of the second surface.

A projection type image display apparatus having a light source apparatus generating white light by mixing blue light and yellow light, and an optical system modulating, by a display element, light generated based on the white light from the light source apparatus to project the modulated light onto an external projection surface, the projection type image display apparatus comprising:

• a heat sink having a bottom portion and a plurality of heat radiation fins extending from the bottom portion,
• one or more cooling fans arranged so as to cool the plurality of heat radiation fins of the heat sink,
• a light emitting element attached to the bottom portion of the heat sink and emitting blue light;
• and
• a phosphor attached to the bottom portion of the heat sink at a predetermined interval from the light emitting element and receiving the blue light to emit the yellow light,
• wherein one or more heat pipes conducting heat by repeating vaporization and liquefaction of working fluid is embedded in the bottom portion,
• each of the one or more heat pipes is provided with a section opposing the light emitting element in a thickness direction of the bottom portion,
• wherein a first surface and a second surface opposing the first surface are formed on the bottom portion,
• the plurality of heat radiation fins extend alongside from the first surface,
• the light emitting element is arranged on the second surface of the bottom portion,
• the phosphor is arranged on the second surface of the bottom portion at a predetermined interval from the light emitting element,
• each of the one or more heat pipes is provided with a section opposing the light emitting element in a normal direction of the second surface,
• wherein each of the one or more of heat pipes is not provided with a section opposing the phosphor in the normal direction of the second surface,
• wherein a shape of the second surface is rectangle configured by a first side, a second side opposing the first side, a third side intersecting with the first side, and a fourth side opposing the third side,
• the light emitting element is arranged so as to be closer to a distance to the first side than a distance to the second side,
• the phosphor is arranged so as to be closer to a distance to the second side than a distance to the first side,
• the more heat pipes have:
• a third heat pipe formed so as to point to the second side through a third section opposing the light emitting element from the first side;
• and
• a fourth heat pipe formed at a position between the third heat pipe and the fourth side so as to point to the second side through a fourth section opposing the light emitting element from the first side, and
• the third heat pipe and the fourth heat pipe are not provided with sections opposing the phosphor in the normal direction of the second surface.