PROBLEM TO BE SOLVED: To reduce power consumption of a heater, etc. for maintaining the temperature of electronic apparatuses mounted in a position where sunlight is not applied directly within the allowable temperature range for the apparatuses in a situation where a large number of electronic apparatuses in which an excessive decrease in temperature should be avoided are mounted on a satellite.SOLUTION: A heat radiation component 1 in which heat resistance with an electronic apparatus is variable is provided instead of using electric power. The heat radiation component is a convex component with a high thermal expansion coefficient as compared with the electronic apparatus 2. By installing the heat radiation component between the electronic apparatus and a heat radiation part 3, thermal resistance between the electronic apparatus and the heat radiation component is caused to be large when temperature is low. Consequently, the electronic apparatus itself serves as a heater, thereby dispensing with a heater and reducing the power consumption of an entire satellite.SELECTED DRAWING: Figure 1
【課題】人工衛星には過剰な温度低下を回避しなければならない電子機器が多数搭載されている。直接太陽光が当たらない位置に搭載された電子機器は、機器の許容温度範囲内に維持するためのヒータ等の消費電力の低減を実現する。【解決手段】電力を用いず、電子機器との間の熱抵抗が可変となる放熱部品1を具備した。放熱部品は電子機器2と比較して熱膨張率が高い凸形状の部品であり、電子機器と放熱部3の間に設置することで、低温時において電子機器と放熱部品の間の熱抵抗を大きくする。これにより電子機器自身がヒータの代替となり、ヒータが不要となって衛星全体の消費電力を低減することが可能となる。【選択図】図1
VARIABLE HEAT RESISTANCE HEAT RADIATION STRUCTURE
熱抵抗可変型放熱構造体
2017-10-05
Patent
Electronic Resource
Japanese