PURPOSE: To project the light from light sources to the ice exhibition body of a low-temperature room through a heat ray cut filter and improve the illumination effect with no heat radiation by discharging the heat generated by the built-in sources of heat insulating light source units in the heat discharging type illumination method for an ice exhibition body to the outside of the low- temperature room through a heat discharging duct.
CONSTITUTION: Multiple light source units 20 are suspended from the heat insulating top wall 11 of a low-temperature room 1 at a proper interval and arranged at positions on the rear side of a ceiling inner wall 11a where an ice exhibition body 2 is formed. A heat insulating lining 22 is provided on the side wall with a U-shaped cross section of the case 21 of the unit 20, the opened side face of the U-shaped cross section is closed by a heat ray cut filter 26 and a transparent glass 27, and it is held so that the light is reflected by the reflecting plate 24 of a protecting tool 23 fitted in this unit 20. A light source 30 is stored in a protecting cylinder 25, and a heat discharging passage 31 is formed around the light source 30. The heat generated by the light source 30 is absorbed by the air stream in this passage 31.
KAWAKITA YOSHIKAZU
UDA MOTOHISA
TAKAZAWA TAKASHI
YONEDA TOKUMITSU
TOYODA HIDEO
MATSUSHITA ELECTRIC WORKS LTD
| JPS6091502A | 1985-05-22 | |||
| JPS5083863U | 1975-07-18 |