JPH0216235Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a lighting device in a refrigeration device. The “refrigeration device” in this specification refers to a refrigerator,
This term refers to all equipment equipped with storage chambers that are kept at low temperatures, such as freezers, cold storage, and frozen storage. BACKGROUND TECHNOLOGY AND PROBLEMS Conventionally, for example, small and simple incandescent light bulbs have been used to illuminate the interior of a refrigerator due to the need to secure indoor space. However, incandescent light bulbs generate a large amount of heat relative to the amount of light they emit, and in order to maintain the low temperature in the storage room, it is desirable to use one with a low output, and sufficient brightness cannot be obtained. When incandescent light bulbs with sufficient brightness are used, they become large, which reduces the indoor space, and also causes the temperature in the storage room to rise or fluctuate, resulting in an increase in energy consumption to maintain the temperature. Additionally, many of the storage rooms in cold storage warehouses are large and have fairly low temperatures, for example, with floors measuring 30 m in length and width, and the temperature set at -50°C. Conventionally, this type of storage room was illuminated by lighting lights attached to the ceiling or the like. Since these lighting lamps generate a large amount of heat in their incandescent parts and discharge parts, repeated blinking causes deterioration of the materials of the incandescent parts, electrodes, cover glass, etc. due to thermal distortion. Therefore, these lights are usually left on regardless of whether they are needed or not, which wastes the energy required for the lights and the energy required for the refrigerator, which is forced to operate extra to compensate for the heat generated by the lights. It was becoming. This problem is especially serious in large warehouses. If the output of the illumination lamp is reduced in order to reduce this energy waste, the color rendering properties of the illumination will be reduced. conventionally
It is often said to be around 100 lux, and its color rendering properties are extremely poor. Furthermore, even with lighting lamps such as mercury lamps that have good luminous efficiency, there is a problem in that the mercury liquefies at freezing temperatures, making them unusable. As described above, although there are differences in the size of storage chambers and high and low temperature settings between refrigerators and frozen warehouses, conventional lighting in refrigeration systems has a common problem with heat release. Problems associated with heat release are, for example,
As seen in Publication No. 14366, this can be solved by guiding the light from a light source lamp installed outside the refrigerator into the interior of the refrigerator using a light guide tube such as a fiberglass scope, but this conventional method has the following problems. It was hot. ○…

Claims (1)

[Scope of utility model registration request] The rod includes an optical transmission rod capable of transmitting light incident from one end to the other end, and a light source section installed outside the accommodation chamber of the refrigerator, and one end of the optical transmission rod receives the light from the light source section. The other end side extends into the storage chamber, and the other end extends into the storage chamber.
In the housing chamber of the rod, a light-resistant transparent fine powder with a higher refractive index than the rod is arranged in a narrow width along the longitudinal direction of the rod in order to diffusely reflect the transmitted light into the rod and emit it outside the rod. 1. An illumination device for a refrigeration device, characterized in that a diffusion stripe is formed by adhering to the refrigeration device.