JP2000237012A - Illumination device for freezing, refrigerating and non- refrigerating showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform excellently functional and effective illumination. SOLUTION: This illumination device of a freezing, refrigerating and non- refrigerating showcase is constituted of a light emitting body 8 disposed inside a case main body 2 in a transparent rod shape whose diameter is about 20-40 mm integrally formed by acrylic resin or the like for instance, a light source device 9 provided in a light source housing part 43 formed inside a side frame 42 for constituting the side wall part 4 of the case main body and a mirror finished surface body 10 for making light emitted by the light source device 9 be incident directly from the end face part 8a of the light emitting body 8. By such constitution, the light is hardly attenuated from the light source device 9 to the light emitting body 8. Thus, even when the light emitted by the light source device 9 is not specially strong, the light irradiated from the light emitting body 8 holds sufficient illuminance as the one for the illumination inside the case and an illumination function is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device such as a frozen showcase, a refrigerated showcase, and a non-cooled showcase.

[0002]

2. Description of the Related Art In a frozen showcase or a refrigerated showcase for storing and selling frozen foods or refrigerated foods,
It is common to use fluorescent lamps, which emit a small amount of heat, as illumination lamps for illuminating internal display products, such as a top plate in a showcase, a lower shelf of a display shelf, front and rear inner walls or side inner walls. A fluorescent light is arranged in the display case, and the products displayed in the showcase are illuminated by turning on the fluorescent light.

[0003] However, although the amount of heat emitted from the fluorescent lamp is small, the calorific value is not zero, and there is a problem that the radiant heat adversely affects displayed products and increases the cooling load in the showcase.

[0004] Further, even in a non-cooled showcase, if a fluorescent lamp is used for illumination, there is a problem that the heat emitted from the fluorescent lamp is trapped in the showcase and the temperature inside the case rises.

In order to solve such a problem, an optical transmission cable in which the outer periphery of a flexible transparent core material having a diameter of 10 to 20 mm is covered with a film having a high reflectance and a protective layer is used. A lighting device for the case was developed,
It is disclosed as JP-A-10-170142.

This prior art has a flexible diameter of 10 mm.
An optical transmission cable having a structure in which the outer periphery of a core material of a transparent body having a thickness of about 20 mm is covered with a film such as Teflon having a high reflectance and a protective layer such as a black vinyl tube is formed. The protective layer is peeled off, a reflective tape is attached to the opposite side of the irradiation direction to form an irradiation part, and this irradiation part is attached along with the top plate part in the frozen / refrigerated showcase or the lower part of the shelf of the display shelf, The other part of the optical transmission cable is routed inside the showcase and the other end is drawn out to the non-cooled space of the showcase, so that light emitted from the light source device provided in the uncooled space enters the optical transmission cable from the other end. Thus, the light transmitted from the light source device through the optical transmission cable irradiates the inside of the showcase from the irradiating section to illuminate the product.

[0007]

As described above, the use of the optical transmission cable as the lighting for a refrigerator / refrigerated showcase (or a non-cooled showcase) can prevent the radiant heat of the lighting from affecting the displayed products. In addition, there is no merit that the heat generated from the lighting raises the temperature inside the showcase and increases the cooling load, which is very effective.

However, the flexible optical transmission cable is routed into the showcase as described above, and one end of the optical transmission cable is used as an irradiating portion, and light emitted from the light source device in the uncooled space of the showcase is used for the optical transmission cable. In the case where the light is guided to the irradiation section through the light guide section and the light is irradiated into the showcase from the irradiation section, the light guide section of the optical transmission cable becomes longer, so that the cost becomes higher, and the light guide section is particularly required. There is a problem that not only is the attenuation of light at the bent portion so severe that the brightness at the irradiated portion tends to be insufficient, but also the luminous intensity varies widely, and practical use is difficult unless these problems are solved.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a refrigerated / refrigerated / non-cooled showcase lighting device which can solve the above-mentioned conventional problems.

[0010]

SUMMARY OF THE INVENTION The present invention relates to a method for freezing, refrigeration,
A lighting device for a non-cooled showcase, for example, a transparent or translucent rod shape having a diameter of about 20 to 40 mm integrally formed of acrylic resin or the like, and a luminous body disposed in the case body, It is characterized by comprising a light source device installed in a light source storage section isolated from the inside, and means such as a mirror body for directly emitting light emitted from the light source device from an end face of the luminous body. Things.

As described above, the light emitted from the light source device is directly incident on the luminous body without passing through the light guide section, so that the light is attenuated before entering the luminous body from the light source device. Therefore, even if the light emitted from the light source device is not particularly strong, the light emitted from the illuminant can maintain sufficient illuminance for illumination in the case, and the illumination function can be improved. In addition, since there is almost no light attenuation as described above, it is possible to sufficiently illuminate the inside of the case with an inexpensive light source device that is usually commercially available. Combined with the low cost, the cost can be reduced.
In addition, since the light source device is installed in the light source storage part isolated from the inside of the case main body, there is no thermal influence on the inside of the case main body.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a base of a freezing / refrigeration showcase, and the base 1 incorporates a freezing / refrigerating device and a driving device thereof. A case main body 2 is fixed to an upper portion of the base 1, and the base 1 and the case main body 2 constitute a freezing / refrigerated showcase.

The case body 2 includes a top plate portion 3 having a substantially front half formed of a top glass 31, a side wall portion 4 having a substantially front half formed of a side glass 41, and a front glass 5 forming an entire front surface. The rear part is configured with an opening / closing door (for example, a sliding door) so that goods and the like can be taken in and out. A lower shelf 6 serving as a lower product display plate is provided at the bottom of the case body 2, and one or a plurality of upper shelf plates (for example, glass) are provided between the lower shelf 6 and the top plate 3. 7 are provided. On the lower shelf 6 and the upper shelf 7, products such as frozen foods or refrigerated foods are displayed. By the operation, for example, the air in the case body 2 is sucked from the suction port provided at the front edge of the lower shelf 6 to cool it, and then, for example, the cool air is blown from the outlet provided at the rear edge of the lower shelf 6. By blowing out into the case body 2, the temperature inside the case body 2 is maintained at a predetermined value or less.

Reference numeral 8 denotes a rod-shaped light-emitting body having a diameter of about 20 to 40 mm. The light-emitting body 8 is made of a transparent synthetic resin such as an acrylic resin. The luminous body 8 is disposed in the left-right direction along the lower surfaces of the top plate 3 and the upper shelf 7, and at least one end of the luminous body 8 is a side constituting the rear part of the side wall 4. The light emitted from the light source device 9 provided in the side frame 42 is protruded into the frame 42, the direction of the light is changed by the mirror body 10, and the light enters the light emitting body 8 from one end face 8 a. The luminous body 8 is supported by the side frame 42 at the left and right end portions by the bracket 11 and at least one of the intermediate portions is fixed by the fixture 12 as shown in FIG. It shall be supported by the upper shelf 7 and the like. An umbrella-shaped reflecting plate 13 is provided on the illuminant mounting portion on the lower surface of the top plate portion 3, the upper shelf plate 7 and the like as necessary.

For example, the rod-shaped light-emitting body 8 made of a synthetic resin such as an acrylic resin has a reflector 81 formed on the outer peripheral surface opposite to the irradiation direction by, for example, coating of a reflective paint, and the above-mentioned light is emitted. By forming a reflector also on the end face opposite to the entry side, light entering from one end face is reflected by the reflector 81 and radiated from the light emitter 8 into the case body 2, and the lower shelf The products displayed on the plate 6 and the upper shelf 7 are illuminated.

The light source device 9 includes, for example, a light source unit 91 of a metahalide type (xenon lamp or the like) and a reflector 92 for reflecting and condensing light emitted from the light source unit 91. Are provided in the light source accommodating portion 43 of the side frame 42 so as to correspond to each of the light emitters 8. The light source device 9 including the light source portion 91 and the reflector 92 is integrally unitized and , Side frame 4
A rail 44 is provided in the second light source housing 43 so that the rear part of the light source housing 43 can be opened and the unitized light source device 9 can be pulled out rearward by the rail 44 or inserted and set from the rear. As a result, maintenance can be facilitated and safety can be improved.

In the above description, the light source device 9 is provided only on one of the left and right side frames 42, and light is made to enter from one end face 8a of the luminous body 8. The mirror 10 and the mirror 10 may be provided in the light source housings 43 of the left and right side frames 42, respectively, and light may be incident from both end surfaces 8 a of the light emitter 8. Also in this case, rails 44 are provided in the light source storage portions 43 of the left and right side frames 42, and the right and left unitized light source devices 9 are mounted on the rails 44.
It is desirable to be able to put in and take out by.

As described above, the light is reflected by the reflector 81 by using the light emitter 8 made of a transparent round bar member and causing the light from the light source device 9 to directly enter the end face 8 a of the light emitter 8. The light is emitted from the light emitter 8 into the case body 2 to illuminate the product, and the light is attenuated before the light emitted from the light source device 9 enters the end face 8 a of the light emitter 8. Therefore, even if the light emitted from the light source device 9 is not particularly intense, the light emitted from the light emitter 8 can maintain sufficient illuminance for illumination in the case main body, and the illumination function in the case main body 2 can be maintained. The light source device 9 can be an inexpensive light source device that is usually commercially available. For example, the light emitting device 8 made of an acrylic rod or the like is sufficient.
However, in combination with mass production and inexpensiveness, the cost can be significantly reduced.

Further, a configuration is adopted in which side frames 42 constituting left and right side walls 4 of the case body 2 are used, and the light source device 9 is housed and installed in a light source housing 43 formed inside the side frames 42. Therefore, the light source device 9 is separated from the inside of the case main body 2 and does not exert a thermal effect on the inside of the case main body. By merely protruding, the appearance is almost the same as that of the conventional case main body without the light source device, and there is no fear of design collapse.

The heat generated by the light source device 9 causes the light source housing 4
Although the temperature inside the light source housing 3 rises, a ventilation fan (not shown) is provided, and by operating the ventilation fan, the air inside the light source housing 43 is released to the outside to cope with the temperature rise inside the light source housing 43. . By operating the ventilation fan, air (warm air) in the light source housing 43 is sucked out, and
1, the outer surface of the side glass 41 and the front glass 5 may be sprayed to prevent dew condensation on the glass surface.

In the above embodiment, the example in which the luminous body 8 is formed of a transparent body is shown, but the luminous body 8 may be formed of a translucent body. The reflector 81 formed on the light emitting body 8 includes:
It is desirable to have a function of absorbing and cutting wavelengths which are considered to be not so desirable for food hygiene for products to be illuminated, and reflecting light rays which are considered beneficial such as sterilization. When the reflector 81 is provided on a part of the light emitting body 8 as in the above-described embodiment, the direction of light beam irradiation is determined by the reflector 81. 360 ° like ordinary fluorescent lamps
In order to perform the irradiation, the reflector 81 formed on a part of the outer peripheral surface of the luminous body 8 is abolished, a reflector is provided at the center of the luminous body 8, The incident light may be reflected by the central reflector.

In order to improve the light condensing property of the light emitted from the light source device 9, there is no non-contact between the reflector 92 and the mirror 10 or between the mirror 10 and the end face 8 a of the light emitter 8. It is desirable to provide a spherical lens. Instead of installing the aspherical lens as described above, the light-collecting property may be improved by processing the end face 8a of the light emitting body 8 like an aspherical lens.

In the above embodiment, an example in which the present invention is applied to a freezer / refrigerated showcase of a type in which the case body 2 is surrounded by the top plate 3, the side wall 4, and the front glass 5 and the rear part is an opening / closing door. Although shown, the present invention is not limited to the above-described type, and is applicable as a lighting device for any type of freezing / refrigerated showcase. Further, the present invention can be applied not only to a frozen / refrigerated showcase but also to a lighting device for a non-cooled showcase.

[0025]

As described above, according to the present invention, in a lighting device for a frozen, refrigerated, or non-cooled showcase, a light emitting device having a transparent or translucent rod shape is used, and light emitted from the light source device is emitted by the light emitting device. Since the light is emitted directly from the end face of the body without passing through the light guide, the light emitted from the light source device is hardly attenuated until the light emitted from the light source device enters the luminous body. Even if the light is not particularly strong, the light emitted from the illuminant can maintain sufficient illuminance for illumination in the case, improving the illumination function in the case, and is usually commercially available as a light source device. Inexpensive materials used are sufficient, and the cost can be significantly reduced in combination with the fact that the luminous body made of, for example, an acrylic rod is mass-produced and inexpensive.

Also, by using side frames constituting left and right side walls of the case body, a light source housing is formed inside the side frames, and a light source device is installed in the light source housing. The light source device is isolated from the inside of the case body and does not exert thermal effects on the inside of the case body, and the side frame provided with the light source storage section only projects a little inside the case body in the width direction, and it has the appearance Is almost the same as the conventional case main body without the light source device, and there is no fear of design collapse.

Further, a rail is provided in the light source accommodating portion so that the light source device can be pulled out or inserted and set by the rail, thereby facilitating maintenance and improving safety of the light source device. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective explanatory view showing an embodiment of the present invention.

FIG. 2 is a view showing details of one end of a light emitting portion of the device shown in FIG. 1 and a light source device for making light incident thereon, and is a see-through view of a side frame portion of a case main body as viewed obliquely from the inside.

FIG. 3A is a cross-sectional plan view showing details of one light source accommodating portion and a peripheral portion thereof, and FIG. 3B is a longitudinal side view showing an example of a support portion in the middle of the light emitting portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base part 2 Case main body 3 Top plate part 4 Side wall part 5 Front glass 6 Lower shelf 7 Upper shelf 8 Light emitting body 8a End face part 9 Light source device 10 Mirror body 42 Side frame 43 Light source storage part 44 Rail 81 Reflector 91 Light source 92 Reflector

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B110 HA08 HA24 3L045 AA05 AA07 BA01 CA02 DA02 EA01 GA07 HA01 PA04

Claims (4)

[Claims] 1. A light-emitting body which has a transparent or translucent rod shape and is disposed in a case body of a frozen, refrigerated, or non-cooled showcase, and which is installed in a light source storage section separated from the inside of the case body. A lighting device for a frozen, refrigerated, or non-cooled showcase, comprising: a light source device; and means for causing light emitted by the light source device to directly enter from an end face of the luminous body. 2. The illuminating device according to claim 1, wherein the luminous body is a transparent rod-shaped body integrally formed of acrylic resin and having a diameter of about 20 to 40 mm. A refrigerated / refrigerated / non-cooled showcase lighting device, wherein a reflector is formed on the outer peripheral surface opposite to the light irradiation direction. 3. The method of claim 1 or 2, wherein
In the lighting device of the non-cooled showcase, the light source storage unit is:
An end of a luminous body formed in a side frame forming a side wall of the case main body and disposed inside the case main body protrudes into the light source housing, and is emitted from a light source device installed in the light source housing. Light is changed into a mirror surface and is incident on the luminous body from the end face portion.
Lighting equipment for refrigerated and non-refrigerated showcases. 4. The freezing / refrigeration / non-cooling showcase according to claim 1, wherein a rail is provided in the light source storage portion, and the light source device is guided by the rail so that the light source device can be taken in and out. Lighting device for frozen, refrigerated and non-cooled showcases, characterized in that: