JPH0240468Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a lighting device for illuminating the inside of a refrigerated or refrigerated show case, which comprises an illumination light, a protective tube covering the illumination light, and a device for keeping the illumination light warm.

(Prior Art) Fig. 2 shows an example of a frozen or refrigerated storage case, and this type of storage case has shelves for displaying products inside the case body 1 consisting of a heat insulating wall, that is, inside the refrigerator. A cooler and a blower are placed in the duct inside the warehouse to circulate cold air. A lighting device 10 is installed at an appropriate location, for example near the front opening, to illuminate the interior of the refrigerator.
will be installed. The shown case is provided with a door 2 at the front opening for loading and unloading products.

Conventionally, as shown in FIG. 3, a lighting device consists of an illumination light 11, a protective tube covering it, and a heat retention device, and the heat retention device includes a heat exchanger plate 13 and a heat exchanger plate 13.
It is composed of a cord heater 14 provided at. Usually, a pair of cord heaters 14 are attached to the heat exchanger plate 13, and the heat exchanger plate 13 is fixed to the heat insulating wall of the main body 1 with screws 15. The protection tube 12 is usually made of a transparent cylindrical body, and serves to prevent damage to the illumination light 11 and the sockets at both ends thereof, and to maintain the lighting temperature. The reason why a heat insulating device is installed is because as the temperature around the light decreases, the ability to start the light and the stability of the illuminance while the light is on decreases, and it often becomes impossible to turn on at temperatures below 0°C. This is to keep the light 11 at a predetermined temperature or higher so that it can be turned on, to eliminate flickering, and to extend its life.

(Problem to be solved by the invention) Since the conventional lighting device is configured as described above, when installing or removing the lighting device within the case body, each member must be installed or removed separately. However, there was a problem that it took time and effort to handle.

The object of the present invention is to solve the above-mentioned problems of the prior art, and therefore to provide a lighting device for a show case that allows the lighting device to be installed and removed very easily.

(Means for Solving the Problems) The lighting device according to the present invention is characterized in that the protective tube is composed of a cylinder 16 having a pair of longitudinally extending constrictions 16a, and is equipped with a cord heater 14 as a heat retaining device. The heat transfer plate 17 is fitted between the pair of constricted portions.

(Operation of the means for solving the problem) In the lighting device according to the present invention, the lighting lamp 11 is housed in the protection tube 16, and between the lighting lamp 11 and the protection tube 16, a heat transfer plate 17 and a cord are provided as a heat insulating device. Since the heater 14 is arranged, each component of the illumination device can be attached and detached as a single unit, making handling extremely easy.

(Example) Next, an example of the present invention will be described with reference to the drawings. As shown in FIG. 1, the lighting device according to the present invention is the same as the conventional one in that the lighting lamp 11 is covered with a protective tube, and a heat exchanger plate and a cord heater 14 are arranged inside the protective tube. The protective tube used in
It is composed of a cylinder 16 with a. Therefore, as seen in FIG. 1, the illuminating light 11 is placed in the center of the protective tube 16.

The heat exchanger plate 17 is fitted between a pair of constrictions 16a in the protection tube 16, and preferably the cord heaters 14 are attached along both sides thereof.
In that case, each cord heater 14 is provided close to the corresponding constriction 16a. It is preferable that the edges on both sides of the heat transfer plate 17 are bent outward, and the bent portions 17a engage the corresponding constricted portions 16a, and the cord heaters 14 are attached to the inner corners of the bent portions. . It goes without saying that the edges on both sides of the heat exchanger plate 17 may have other shapes as long as they can engage with the constricted portions 16a. It is preferable that the main part of the heat transfer plate 17, that is, the part between the bent parts 17a on both sides, be configured so as to be in contact with the periphery of the illumination light 11, thereby increasing the heat transfer effect and suitably heating the lamp. There are possible advantages.

Therefore, the heat retaining device consisting of the cord heater 14 and the heat transfer plate 17 is fitted into the protection tube 16 and is thus integrated with the protection tube 16.
Since they are also housed within the protection tube 16, they are handled as one unit. In the above embodiment, the cord heater 14 is provided along both sides of the heat exchanger plate 17, but depending on the case, the cord heater 14 may be located in the center or at another position, or even a single cord heater 14. good.

During operation, the illumination light 11 is heated to a required temperature by the cord heater 14 via the heat exchanger plate 17, so that lighting startability and illuminance stability are maintained.

(Effects of the Invention) As described above, according to the present invention, since the illumination device is constructed as a single piece, each of its constituent members can be attached and detached as a unit, making attachment and detachment extremely easy. Therefore, the lighting device can be easily maintained, inspected, and its constituent members replaced.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a preferred embodiment of a lighting device for a show case according to the present invention, FIG. 2 is a perspective view of an example of a show case equipped with a lighting device to which the present invention relates, and FIG. FIG. 3 is a cross-sectional view showing the lighting device. In the figure, 11... illumination light, 14... cord heater, 16... protection tube, 16a... constriction, 17
...Heat transfer plate, 17a...Bent part.

Claims (1)

[Claims for Utility Model Registration] (1) An illuminating light, a protective tube that covers it, a heat exchanger plate provided within the protective tube for heating the illuminating light, and a cord provided on the heat exchanger plate. A lighting device of a show case including a heat retaining device consisting of a heater, wherein the protective tube is made of a cylinder having a pair of constricted parts, and the heat transfer plate is fitted between the pair of constricted parts. lighting equipment. (2) both edges of the heat exchanger plate are bent outward;
2. The lighting device for a show case according to claim 1, wherein a bent portion thereof engages with the constricted portion, and the cord heater is provided at an inner corner of the bent portion. (3) The illumination device for a show case according to claim 1, wherein the main part of the heat exchanger plate is arranged so as to be in contact with the illumination light.