A wavelength conversion module and a projector including the wavelength conversion module are provided. The wavelength conversion module includes a substrate and a wavelength conversion layer. The substrate has a first surface and a second surface opposite to each other. The substrate includes a plurality of turbulent portions, and the turbulent portions are recessed in at least one of the first surface and the second surface. The wavelength conversion layer is disposed on the first surface of the substrate, and a distribution area of the turbulent portions accounts for more than 60% of an exposure area of the substrate. The wavelength conversion module and the projector provided by the disclosure exhibit favorable heat dissipation efficiency.

A wavelength conversion module and a projector including the wavelength conversion module are provided. The wavelength conversion module includes a substrate and a wavelength conversion layer. The substrate has a first surface and a second surface opposite to each other. The substrate includes a plurality of turbulent portions, and the turbulent portions are recessed in at least one of the first surface and the second surface. The wavelength conversion layer is disposed on the first surface of the substrate, and a distribution area of the turbulent portions accounts for more than 60% of an exposure area of the substrate. The wavelength conversion module and the projector provided by the disclosure exhibit favorable heat dissipation efficiency.

Provided is a head-up display including a liquid-crystal panel including a display screen provided at a front surface thereof, a Fresnel lens opposite the liquid-crystal panel from the display screen, a light-diffusion structure between the liquid-crystal panel and the Fresnel lens, a backlight that emits light toward the Fresnel lens, a body part accommodating the Fresnel lens, and a mirror that forms a virtual image corresponding to an image displayed on the display screen of the liquid-crystal panel, in a target space. The body part has a step-shaped structure including a first step surface and a second step surface, the first step surface and the second step surface are oriented in the same direction as the front surface of the liquid-crystal panel, the first step surface is located on the liquid-crystal panel side from the second step surface, and the liquid-crystal panel is supported on the second step surface.

Provided is a head-up display including a liquid-crystal panel including a display screen provided at a front surface thereof, a Fresnel lens opposite the liquid-crystal panel from the display screen, a light-diffusion structure between the liquid-crystal panel and the Fresnel lens, a backlight that emits light toward the Fresnel lens, a body part accommodating the Fresnel lens, and a mirror that forms a virtual image corresponding to an image displayed on the display screen of the liquid-crystal panel, in a target space. The body part has a step-shaped structure including a first step surface and a second step surface, the first step surface and the second step surface are oriented in the same direction as the front surface of the liquid-crystal panel, the first step surface is located on the liquid-crystal panel side from the second step surface, and the liquid-crystal panel is supported on the second step surface.

The present disclosure discloses a lamp for projecting a nebula and a starry sky comprising a housing, a light source assembly, a laser assembly, a rotating assembly, a control board, a base seat, and a power source port. The light source assembly and the laser assembly are disposed in the housing and penetrate through the housing, and the rotating assembly and the control board are disposed in the housing. The rotating assembly is configured to drive a rotating optical sheet and a diffraction sheet to rotate. The light source assembly comprises a light source board, a light reflecting cup, the rotating optical sheet, and a lens assembly having a frosted surface with an array of protrusions. The light source board, the light reflecting cup, the rotating optical sheet, and the lens assembly are successively disposed along a path in which light rays emitted by the light source board move.

A projection apparatus includes a casing, a projection lens, a first and a second light source modules, a first and a second thermal modules respectively thermally coupled to the first and the second light source modules, and a first and a second fans. The casing includes a bottom cover having a first air inlet corresponding to the projection lens, a front cover, a rear cover having a second air inlet, a first and a second side covers, which define an internal space divided into a first and a second areas. The first air inlet is connected to the internal space. A first air outlet of the first side cover and the second air inlet are connected to the first area. The first and the second light source modules, the first and the second thermal modules, and the first and the second fans are disposed in the first area.

A projection apparatus includes a casing, a projection lens, a first and a second light source modules, a first and a second thermal modules respectively thermally coupled to the first and the second light source modules, and a first and a second fans. The casing includes a bottom cover having a first air inlet corresponding to the projection lens, a front cover, a rear cover having a second air inlet, a first and a second side covers, which define an internal space divided into a first and a second areas. The first air inlet is connected to the internal space. A first air outlet of the first side cover and the second air inlet are connected to the first area. The first and the second light source modules, the first and the second thermal modules, and the first and the second fans are disposed in the first area.

A heat-dissipating module including heat-dissipating fins and heat pipes is provided. The heat-dissipating fins include first and second heat-dissipating fins arranged in an interleaved, spaced apart manner, and arranged in parallel along a first direction. The first heat-dissipating fins have interleaved first vias and first breach holes. The second heat-dissipating fins have interleaved second vias and second breach hole. The first breach holes and the second breach holes are arranged along a second direction, and the second vias respectively correspond to the first vias. The first direction is not parallel to the second direction. The heat pipes are configured to pass through the first vias and the second vias. A position of the orthogonal projection of a first breach hole formed on the second heat-dissipating fins along the first direction and the corresponding second breach hole are not overlap or are partially overlapped, and are arranged in symmetry.

A heat-dissipating module including heat-dissipating fins and heat pipes is provided. The heat-dissipating fins include first and second heat-dissipating fins arranged in an interleaved, spaced apart manner, and arranged in parallel along a first direction. The first heat-dissipating fins have interleaved first vias and first breach holes. The second heat-dissipating fins have interleaved second vias and second breach hole. The first breach holes and the second breach holes are arranged along a second direction, and the second vias respectively correspond to the first vias. The first direction is not parallel to the second direction. The heat pipes are configured to pass through the first vias and the second vias. A position of the orthogonal projection of a first breach hole formed on the second heat-dissipating fins along the first direction and the corresponding second breach hole are not overlap or are partially overlapped, and are arranged in symmetry.

An image display device is a self-luminous type device including a light emitting portion, and a casing portion of a display device unit has a heat dissipating structure portion through which a part of the image display device is exposed for heat dissipation. In manufacturing the display device unit, when performing simple and reliable assembly while securing a high heat dissipation characteristic, for example, by using characteristics of a silicon substrate, high accurate positioning is performed in a display device positioning portion.