The JAXA spacecraft decided to use the Matsushita electrician's LED lighting device

Matsushita announced that its LED "PSL=Permanent Solid-state Lighting" lighting device, by the Japan Aerospace Exploration Agency (JAXA) developed by the international space station (International Space Station:ISS) with supply machine "H-II (HTV) by Transfer Vehicle". The lighting device is expected to be used in 2010 after the launch of the HTV. Matsushita Electric is scheduled to start from 09 summer to JAXA supply. The company said the spacecraft is the first time the use of LED lights in the world. The decision to use the LED lighting device using high strength LED package, filled with silicon materials. Prior to the spacecraft for the lighting of fluorescent lamps due to the use of glass tubes and mercury, there are broken glass and Mercury will float in the cabin, the use of LED lighting device can solve this problem. By adopting the structure of strong vibration and acceleration. The utility model is designed to radiate heat through radiation and conduction even under the condition of no air flow, so as to ensure that the temperature of the surface of the appliance and the allowable temperature of the electronic component are not exceeded. For the purpose of use in a confined space, a flame retardant and non hazardous material is produced.

Sectional drawing of lighting device

The device is packaged with 20 LED, even if there are a few LED is not bright, still can lighting. The lighting device is divided into 2 groups, each of the 10 LED lights use 1 power supply for power failure.

Internal structure of lighting device

Luminous color is white. Power is about 29W. The input voltage is DC 120V. The luminous flux of the appliance is about 400lm. The overall dimensions are 673mm * wide 167.5mm. HTV is JAXA development of unmanned resupply machine, for the delivery of goods to the manned ISS. It is estimated that 2 to 4 LED lighting devices will be used per frame. After docking with the ISS HTV, ISS astronauts to remove the material from the HTV, while the unused items into the HTV, the workplace will set the LED lights.

Use of lighting fixtures in HTV

The decision to use the LED lighting device is the 05 year to participate in the tender Matsushita Electric JAXA open space laboratory was selected. After the discussion of the concept, the development of performance indicators and the value of the components, materials and other experiments, in 07 the beginning of the development of the HTV spacecraft lighting devices. In the future, Matsushita Electric will work with JAXA to jointly discuss and develop the LED lighting device in ISS.

Source: Nikkei BP