Abstract: A vehicle air conditioner includes a main blower and a sub-blower for blowing air into a passenger compartment. The main blower is disposed to blow conditioned air in a front air passage toward a front seat area in the passenger compartment, and the sub-blower is disposed in a rear air passage having an air flow resistance larger than that in the front air passage so that a part of air blown by the main blower is blown by the sub-blower toward a rear seat area in the passenger compartment through the rear air passage. In the air conditioner, an air amount blown by the sub-blower is controlled to be increased in accordance with a decrease of an air amount blown by the main blower. Therefore, automatic control of the air amount blown by the sub-blower can be accurately performed.

Abstract: A vehicle air conditioner includes a main blower and a sub-blower for blowing air into a passenger compartment. A heat exchange unit for performing a heat exchange with air blown by the main blower is disposed in a case, and the case is provided with a front air passage and a rear air passage. A rear air duct through which air in the rear air passage is introduced to a rear area in the passenger compartment is connected to the case, so that an air flow resistance in the rear air passage becomes larger as compared with the air flow resistance in the front air passage. Further, the sub-blower is disposed integrally with the case for blowing air in the rear air passage to the rear area in the passenger compartment. Accordingly, it can effectively prevent a shortage of an air conditioning capacity in the rear area of the passenger compartment.

Abstract: A heater for an air conditioner includes plural water tubes and plural refrigerant tubes which are arranged in parallel in an air flow direction. Therefore, the heater can heat air by using at least one of the heating sources while a pressure loss in the heater can be effectively reduced. For example, in a quick-heating mode, high-temperature refrigerant from a refrigerant cycle flows into the heater to heat the blown air, and low-temperature engine-cooling water from an engine bypasses the heater. In this case, thermal leakage from the refrigerant to the engine-cooling water is avoided.

Abstract: To devise an incandescent bulb for a motor vehicle with a new arrangement which can withstand vibration during driving of a motor vehicle to a sufficient degree, an envelope is provided with a unilateral sealed portion which is preferably made of a glass that has quartz as the main component; at least two feed lines extend as inner leads into the envelope; and at least one filament coil of which the main component is tungsten and which forms an emission part, has one end connected to one of the lines and the other end connected to the other of the feed lines, and the filament coil has a spring constant of at least 25 g/mm and a weight of at most 100 mg. Furthermore, advantageously, the inner leads are made of a material of which the main component is molybdenum, and the diameter of the inner leads is at least 0.48 mm.

Abstract: In a vehicle air conditioner, a flow control member is disposed in an inlet tank of a heating heat exchanger for heating air to be blown into a passenger compartment using a fluid as a heating source. In the heating heat exchanger, a ratio between a first area where the fluid flows, and a second area where the fluid does not flow is changed by controlling an operation position of the flow control member. Thus, a flow ratio between hot air from the first area of the heating heat exchanger and cool air from the second area thereof can be adjusted, so that the temperature of air blown into the passenger compartment can be adjusted.

Abstract: An air passage opening/closing device includes a film member for opening and closing an opening of an air passage of a case. One end of the film member is fixed to a fixing portion on an outer periphery of the opening of the air passage, and the other end thereof is connected to a film winding shaft. A moving member movable by rotation of a drive shaft is provided on the opening, and the film winding shaft is moved while being rotated by the movement of the moving member, so that the film member at the other end side is wound around and unwound from the film winding shaft. Accordingly, when the air passage is opened and closed by the film member, sliding friction can be prevented from being generated between the film member and the case.

Abstract: In a vehicle air conditioner, a defroster opening and a foot opening are provided at both right and left sides of a face opening. An outlet portion of a warm air passage has an enlarged portion offset to right and left side of the outlet portion of the cool air passage. During a bi-level mode, cool air from the cool air passage flows toward the face opening, and warm air from the warm air passage flows toward the foot opening, On the other hand, during a foot/defroster mode, cool air from the cool air passage and warm air from the warm air passage are mixed at an Inlet portion of the foot opening and the defroster opening and the mixed air is introduced into the foot opening and the defroster opening.

Abstract: An air-conditioning case of an air-conditioning unit forms air passages therein. A film member is reciprocably supported in the case and has free ends. Reinforcing members are secured to the lower end of the film member. A drive force for reciprocating the film member is applied to the film member from a motor through a drive shaft and drive gears, which are attached to the drive shaft, to open and close the air passages with the film member. When the film member is moved upwardly, the reinforcing members abut against positioning portions of the case to position the film member at a predetermined position.

Abstract: In a vehicle air conditioner, a flow control member is disposed in an inlet tank of a heating heat exchanger for heating air to be blown into a passenger compartment using a fluid as a heating source. In the heating heat exchanger, a ratio between a first area where the fluid flows, and a second area where the fluid does not flow is changed by controlling an operation position of the flow control member. Thus, a flow ratio between hot air from the first area of the heating heat exchanger and cool air from the second area thereof can be adjusted, so that the temperature of air blown into the passenger compartment can be adjusted.

Abstract: To devise an incandescent bulb for a motor vehicle with a new arrangement which can withstand vibration during driving of a motor vehicle to a sufficient degree, an envelope is provided with a unilateral sealed portion which is preferably made of a glass that has quartz as the main component; at least two feed lines extend as inner leads into the envelope; and at least one filament coil of which the main component is tungsten and which forms an emission part, has one end connected to one of the lines and the other end connected to the other of the feed lines, and the filament coil has a spring constant of at least 25 g/mm and a weight of at most 100 mg. Furthermore, advantageously, the inner leads are made of a material of which the main component is molybdenum, and the diameter of the inner leads is at least 0.48 mm.

Abstract: An air-conditioning case of an air-conditioning unit forms air passages therein. A film member is reciprocably supported in the case and has free ends. Reinforcing members are secured to the lower end of the film member. A drive force for reciprocating the film member is applied to the film member from a motor through a drive shaft and drive gears, which are attached to the drive shaft, to open and close the air passages with the film member. When the film member is moved upwardly, the reinforcing members abut against positioning portions of the case to position the film member at a predetermined position.

Abstract: A filament lamp for an emission of yellow light, with a color film which is formed on the surface of the bulb, where the color film is essentially composed of a combined oxide of titanium, nickel and antimony. The color film may have a ratio of titanium, nickel and antimony to one another in a weight ratio of 5.6 to 8.6:3.6 to 6.6:1.0 to 1.8. Also, the color film may be a sintered coating formed by admixing a solution A produced by dissolving a nickel salt and an antimony salt in an organic solvent, addition of a titanium alkoxide and reaction of the reaction mixture; and addition of a stabilizer which forms a chelate with titanium with a solution B produced in substantially the same manner as solution A. The solutions A and B contain nickel nitrate-6-hydrate, antimony trioxide, tetraisopropoxy titanium, acetyl acetone, and/or water.

Abstract: To control fluctuation of blown air temperature of a heat exchanger to a small value without adding a movable mechanism such as a variable restricting valve, a heat exchanger for heating air by exchanging heat between hot water supplied from a water-cooling type engine and air, a flow control valve for controlling a hot water flow amount to the heat exchanger and a bypass circuit for allowing hot water to flow while bypassing the heat exchanger are provided. A pressure-responsive valve is provided on the bypass circuit and an opening degree of the bypass circuit corresponding to a pressure rise of the hot water is increased. The flow of returning hot water from the heat exchanger is blocked by the flow of the bypass side hot water at a merging portion where the bypass side hot water discharged from the pressure-responsive valve merges with the returning hot water discharged from the heat exchanger.

Abstract: When the engine is stopped while the engine is warmed up, the cooling water in the engine stays therein without flowing out of the engine, and the cooling water in the radiator or the bypass passage is used for heating source for the heating operation. In this way, it is possible to heat the passenger compartment continuously even after the engine is stopped and to suppress the temperature of the cooling water from lowering to reduce the emission at restarting of the engine.

Abstract: A flow-quantity control valve controlling hot-water flow to a heat exchanger and a bypass circuit allowing hot water to bypass the heat exchanger are provided along with a pressure-actuated valve in the bypass circuit which is responsive to a pressure increase of hot water from an engine. Inlet-side opening portions, outlet-side opening portions, and a bypass-side opening portion are provided in a control passage of a valve body of the flow-quantity control valve. Main flow of dynamic pressure of hot water sprayed from portions on a small opening-degree side act upon a valve body side of the pressure-actuated valve. Due to this, dynamic pressure of the hot water in a small opening-degree region of the flow-quantity control valve can be effectively used to increase a valve-lift quantity of the pressure-actuated valve, thereby reducing a fluctuation range of blown-air temperature of the heat exchanger.

Abstract: To be able to control minute flow in a heat exchanger flow control valve without requiring a minute opening portion, an opening surface area of a hot-water inlet pipe into which hot water flows from an engine is restricted by a first restricting portion of a control passage provided in a needle valve of a flow control valve, and along with this, an opening surface area of a hot-water outlet pipe connected to an inlet side of a heat exchanger for heater use is restricted by a second restricting portion of a control passage formed in the needle valve, and a middle portion of these two control passages is constantly connected to a bypass circuit by a third restricting portion.

Abstract: A plurality of flow control valves is correspondingly provided to a plurality of heater core portions. Each of the flow control valves is provided with a first restriction portion formed in an inlet for receiving hot water, a second restriction portion in an outlet for introducing hot water to the respective heating heat exchange portions, and a bypass opening opened at an intermediate pressure portion between the first restriction portion and the second restriction portion. Each opening area of the first restriction portion, the second restriction portion, and the bypass openings is regulated by a cylindrical valve. The first and second restriction portions, the bypass openings and the valve bodies are accommodated within a common housing, and a bypass passage communicating with the bypass openings is formed in the common housing.

Abstract: A heating apparatus of a re-heat type for an air conditioning system for a vehicle provided with an internal combustion engine. The heating apparatus includes a flow control valve for controlling an amount of an engine hot water directed to a heat exchanger for heating. When the degree of the opening of the flow control valve is 2/8 or less and when the target degree of the opening of the flow control valve is 2/8 or more, a control of the degree of the opening of the flow control valve to the target opening plus a predetermined overshoot amount is initially executed, which is followed by a control to the target opening. When both of the initial and target opening is larger than 2/8 or the initial and target opening are identical, the overshoot control is not carried out, i.e., the degree of the opening of the flow control valve is directly controlled to the target value.

Abstract: The total flow rate of the hot water flowing to a first heater core and a second heater core is controlled by a total flow rate control valve, and then the flow rate of the hot water to each of the heater cores is distributed by a distribution valve. According to this configuration, the flow rate of the hot water flowing through each of the heater cores is linearly controlled. Therefore, the heating of the driver's seat space by the first heater core and the heating of the air conditioning of the passenger's seat space by the second heater core can be linearly controlled.