Abstract: A cooling device for cooling an LED of vehicle headlight without restricting a design of a housing is provided. The cooling device is comprised of an LED held in a housing sealed with a lens, a reflector that reflects a light emitted from the light source, a heat collector on which the LED is mounted, a heat sink disposed behind the reflector, and a pair of heat pipes thermally connecting the heat collector and the heat sink. The heat sink is arranged inside of the housing.

Abstract: The defrost structure for a vehicle headlight is provided. In the defrost structure, an LED 2 arranged in a housing 10 is connected to a heat sink 20 through a heat pipe 40. The heat sink 20 comprises a base plate 21 closing a rear opening of the housing 10, and fins 22 erected on the base plate 21 vertically to protrude forward in the housing 10. An air flow channel X is formed to allow air warmed by the fins 22 to flow toward an inner surface 11a of a lens 11. An upper side 22a of each fin 22 serves as the air flow channel X.

Abstract: A cartridge includes: a developer accommodating chamber, provided with an opening, for accommodating a developer; a sealing member, provided with an electroconductive portion, for sealing the opening; and a storing element, provided with an electrical contact at a surface thereof, for storing information on the cartridge. The electroconductive portion covers the electrical contact.

Abstract: A heat pipe having a wick structure for efficiently returning working fluid to an evaporating portion is provided. The heat pipe comprises a container 2 sealed at its both ends, a working fluid encapsulated in the container, and a wick structure 10 covering an inner face of the container. The wick structure 10 includes a porous wick 11 of a sintered metal powder, and a fiber wick 12 buried in the porous wick. A capillary pressure of the fiber wick 12 is weaker than that of the porous wick 11, and a pressure loss of the fiber wick 12 is smaller than that of the porous wick 11.

Abstract: An image forming apparatus for forming an image on a recording material includes a cartridge, detachably mountable to a main assembly of the image forming apparatus, including a memory and an image forming process member actable on an image bearing member, and a current detecting portion, provided in the main assembly, for detecting a value of current passing through the process member. The current detecting portion detects the value of the current passing through the process member when a voltage is applied to the process member, and the memory stores information for discriminating whether or not the process member is recyclable on the basis of the detected value of the current.

Abstract: A vapor chamber having improved heat transfer capacity by efficiently returning the working fluid to the evaporating portion is provided. A hollow flat container 2 is formed by a base member 4 and a lid 3 closing an opening of the base member. Phase-changeable working fluid is held in the container, and fins 9 are arranged in the container to transmit heat of a heat generating object between the bottom plate of the base member and the lid. The fins are densely juxtaposed on an evaporating portion in comparison with the other fins juxtaposed on the outside of the evaporating portion.

Abstract: An emergency cooling system for cooling an object certainly and rapidly in case a temperature of the object is accidentally raised abnormally. A loop thermosyphon is formed by connecting an evaporating portion with a condensing portion through a vapor pipe and a return pipe in a manner to form a cyclic conduit. A condensable working fluid circulates within the loop thermosyphon to be evaporated by a heat of the cooling object at the evaporating portion, and to be condensed at the condensing portion to radiate the heat conducted from the cooling object. A switching valve is disposed on the return pipe to selectively allow the working fluid in a liquid phase to be returned from the condensing portion to the evaporating portion. Heat transfer pipes to which the heat of the cooling object is conducted are arranged in the evaporating portion.

Abstract: A cooling device for cooling an LED of vehicle headlight without restricting a design of a housing is provided. The cooling device is comprised of an LED held in a housing sealed with a lens, a reflector that reflects a light emitted from the light source, a heat collector on which the LED is mounted, a heat sink disposed behind the reflector, and a pair of heat pipes thermally connecting the heat collector and the heat sink. The heat sink is arranged inside of the housing.

Abstract: A cartridge includes: a developer accommodating chamber, provided with an opening, for accommodating a developer; a sealing member, provided with an electroconductive portion, for sealing the opening; and a storing element, provided with an electrical contact at a surface thereof, for storing information on the cartridge. The electroconductive portion covers the electrical contact.

Abstract: A cleaning member for removing a developer from a surface of a member to be cleaned includes a blade member configured to make contact with the member to be cleaned in a direction counter to a moving direction of the member to be cleaned, and a flexible plate-like supporting member configured to support the blade member, which includes one end with the blade member, the other end with a fixed portion fixed to a frame member, and a bent portion between the ends which is located outwardly away from the surface of the member to be cleaned relative to a segment connecting the fixed portion and a contact portion between the blade member and the member to be cleaned. The fixed portion arranged downstream of the moving direction of the member to be cleaned relative to the contact portion has a folded-back shape to nip part of the frame member.

Abstract: An image forming apparatus for forming an image on a sheet includes an image bearing drum; a charging member for charging the drum by applying of a voltage while contacting to the drum; an AC voltage generating unit for generating and applying an AC voltage to the charging member; a state detector for detecting a state of the apparatus; a discharge current detector for detecting a discharge current between the charging member and the drum; a discharge current control unit for controlling the AC voltage generating unit on the basis of a result of detection of the discharge current detector; a discriminating unit for discriminating whether to calibrate the discharge current detector before formation of the image, in accordance with a result of detection of the state detector.

Abstract: A power generation system onboard an aircraft includes a fuel cell module configured to produce heat. A loop heat pipe module is coupled to the fuel cell module. The loop heat pipe module includes a first fluid that absorbs the heat from the fuel cell module and is channeled through the loop heat pipe module.

Abstract: A thin flat heat pipe capable of transporting heat even if it is bent is provided. The flat heat pipe comprises: a working fluid to be evaporated when heated and to be condensed when the heat dissipates; and a wick, which is formed by bundling a plurality of thin wires while twisting along a center axis thereof, and which is adapted to create a capillary pressure for returning the liquid phase working fluid to a portion where evaporation takes place. The wick is arranged over the entire length of the flat container while being in contact with both upper and lower inner faces of the container or with an inner side face of the container in a manner such that an inner space of the container for letting through an evaporated working fluid is not closed, and a contact portion between the wick and the container is fixed by sintering over the entire length of the wick.

Abstract: A cooling system for a data center, in which a plurality of servers having exothermic electronic components is installed in a housing. The cooling system comprises: a cooling circuit, a main cooling device to cool cooling medium heated by electronic components, and an auxiliary cooling device to assist the main cooling device in cooling the cooling medium.

Abstract: A heat sink, wherein a plurality of heat radiation fins are mounted on a base plate to which an electronic device is attached in a heat transmittable manner. The heat radiation fins are erected vertically and in parallel with each other on the reverse face of the base plate to which the electron device is contacted, and extended laterally from the base plate. A heat pipe transports heat between the extended portion of the heat radiation fins and the base plate.

Abstract: A concentrating photovoltaic generation system including a photovoltaic generator which converts solar light into electric power, a reflector panel which concentrates solar light onto the photovoltaic generator, and a radiation cooling mechanism to which heat is transmitted from the photovoltaic generator and from which heat is radiated, thus cooling the photovoltaic generator.

Abstract: A heat transfer device including a sealed container, a base layer, formed on the bottom face of the container, and a wick is provided. The wick has a plurality of projections protruding upward from the base layer. A fluid is encapsulated in the container. The heat transfer device further includes a guide unit arranged on an inner face of the container, which guides the liquid to the wick.

Abstract: A heat sink, wherein a plurality of heat radiation fins are mounted on a base plate to which an electron device is attached in a heat transmittable manner. The heat radiation fins are erected vertically and in parallel with each other on the reverse face of the base plate to which the electron device is contacted, and extended laterally from the base plate. The heat sink of the invention comprises a heat pipe for transporting heat between the extended portion of the heat radiation fins and the base plate.

Abstract: To improve a heat exchange efficiency of a heat sink without enlarging the heat sink. The heat sink of the invention comprises a heat receiving base receiving heat from an exothermic element, a plurality of fins radiating heat arranged radially around the heat receiving base at predetermined intervals, and one or more heat pipe(s) comprising a curved portion. One of end portions of the curved portion is individually connected to a predetermined portion of the heat receiving base, and a predetermined region of the curved portion is contacted with the fins in a heat transferable manner.