RU2480135C2 - Presentation furniture lighting device - Google Patents

Abstract

FIELD: personal use articles.

SUBSTANCE: invention relates to display furniture for presentation of chilled or frozen products within the products storage space that is at least partially closed with transparent panes and has an inlet access hole covered with the help of movable transparent panes. The goods storage space is lit with the help of a lighting device the luminous element whereof is positioned inside the goods storage space while the corresponding heat withdrawal device is installed so that the heat generated by the luminous element is withdrawn outside the goods storage space. Instead of a regular cooling device for the LED luminous element a heat withdrawal device is envisaged in the form of a functional part of refrigeration equipment.

EFFECT: ensuring increased energy saving and good lighting.

29 cl, 12 dwg

Description

The invention relates to furniture for the presentation of chilled or frozen products with a space for products that is at least partially covered by transparent glasses and provided with an opening for access blocked by transparent movable glasses, and the space for products is illuminated using a lighting device.

There are various options for the execution of equipment for the presentation of goods with built-in lighting device. For this purpose, mainly fluorescent lamps are used, which are usually placed outside the space for goods. Prefer not to place fluorescent lamps inside the goods space, since fluorescent lamps emit heat and, above all, ultraviolet radiation, which is undesirable in the goods space, and ultraviolet radiation can heat the cooled product. However, the placement of such lighting devices outside the space for goods has the disadvantage that insulating glazing, which although prevents ultraviolet radiation, leads to loss of light, and for this reason the lighting has to be increased in relation to the lighting that is located inside the space for goods. Amplified lighting to compensate for light loss leads to increased energy consumption. However, one has to put up with this increased energy consumption, since the heat transfer of the glowing body within the space for the goods requires an increase in cooling capacity, which has an even more adverse effect on the energy balance.

LED lighting fixtures of various shapes are used for a wide variety of purposes. LED light is cold light, that is, it does not produce radiation and, above all, infrared or ultraviolet radiation, and therefore can not lead to the accumulation of heat in the refrigerated product. LED luminaires consist, for example, of a thin metal strip, the so-called circuit board, on which individual glow bodies with corresponding electronic elements are located. Since a large process heat is generated in the light of a light-emitting diode, which is much larger compared to fluorescent lamps, it is therefore necessary to ensure adequate heat dissipation. Therefore, a kind of refrigerator (ribbed metal) is placed on the back side of the circuit board with incandescent bodies, while the front side is covered with a lens to protect the incandescent bodies. Also in this case, there is the problem of the effect of the load on the energy balance under the influence of heat release. For example, if LED lighting is located outside the refrigeration chamber in order to prevent this process heat from entering the cooling chamber, then light losses occur under the action of fogged glass within 20-25%. As a result of this, less energy demand for light emitting diodes is again lost.

The objective of the invention is to create a lighting device for furniture for the presentation of chilled and frozen products, which provides increased energy savings and despite this provides good lighting.

This problem is solved according to the characteristics of claim 1 of the claims. As a result of the heat generated by the glowing body being removed outside the space for goods, it is possible to directly illuminate the space for goods, so that light losses are prevented, but nonetheless, the cooling capacity should not compensate for the generated heat of the glowing bodies. The heat dissipation device is preferably located near the edges of the glasses covering the space for the goods, and extends along the edge of the glass, so that the heat removed from the glow body heats the edge of the glass. This is of particular importance for low-temperature furniture, in which there is a very big difference with the outside temperature, and just in this area of the glasses the formation of condensation moisture is prevented.

The problem is solved using various, quite different forms of execution. In furniture for presentation of goods with a vertical opening for access to the space for goods, which is divided into compartments located vertically one above the other, the ends of the door on the hinge side form an intermediate space in the area of which the filament body of the lighting device is located so that the filament body communicates directly with the space for the goods, while the heat generated by the glow body through the heat removal device is removed outside through the intermediate space. When using LED filament bodies, the LED filament body is placed on or in front of the side of the intermediate space of the goods storage space, while the heat dissipation device removes heat through a heat sink to the radiator, which is located outside the goods space. The heat sink passes along the edge of the glass, so that under the action of the heat removed, the edge of the glass is heated to prevent the formation of condensation moisture. Additional filaments can not be used. A device for heat removal, it is advisable to perform in the form of a functional part of the refrigeration equipment so that the LED glow bodies are located directly on it. It runs along the edge of the glass and, with the door closed, overlaps the intermediate space between the two adjacent doors. The device for removal in the form of a functional part serves simultaneously as a stop for the edge of the glass of the door if it is in the closed position.

According to another embodiment of the invention, the lighting device is positioned vertically and located in the space for placing goods. This is advantageous for areas in which the door end on the hinge side is adjacent to the side wall of the refrigeration equipment.

The filament body, which can be either a fluorescent lamp, or can be made of LED filament bodies, is encapsulated in a pipe that spans the filament body at a distance, so that a cavity forms. Since the capsule has a hole at the lower and upper ends, therefore, an air stream is generated that removes heat from the fluorescent lamp and, accordingly, from the radiator, so that it cannot enter the storage space for goods. Also in furniture for the presentation of products in the form of a refrigerated counter, which is equipped with protective covers that are moved over the opening of the refrigerated counter, the device can be used with advantage. At the same time, on the base profile, which is simultaneously made as a device for heat removal, LED glow bodies are located in the space for storing goods to ensure its lighting. According to the basic profile, on which the LED glow bodies are placed, heat is removed to the environment. LED glow bodies can be placed directly on the base profile, so that the cooling effect will be improved. Thus, there is no need for transient resistances in the device for heat removal.

The next subject of the invention consists not only in the removal of heat generated by the bodies of heat, but also in the use of this heat to heat the edges of the doors and edging exposed to condensation moisture, as a result of which there is no need to use energy-consuming filaments, which are used as additional heating . For heat dissipation also on the edges of the glass, which are located parallel to the device for heat dissipation, the edge of the glass is equipped with a heat pipe, the so-called type "Heat-pipe" (English), which runs along all edges of the glass.

Due to the fact that there is no need to use filament, heating must also be done at night, the filament bodies work at night with reduced power, since the heat necessary to heat the edges will be enough if half or a third of the power is given lighting. For this, switching devices, a dimmer for fluorescent lamps, or also clock circuits or circuits in which only part of the light emitting diode bodies are in operation can be provided. Further details of the invention are described with reference to the accompanying drawings.

Figures 1 and 2 are an enlarged fragment of various arrangements of LED lamps in the intermediate space between the ends of the doors from the side of the furniture hinges for the presentation of goods with a vertical access hole.

Figure 3 - installation and fastening of the lighting device according to the invention in refrigeration equipment with a vertical opening for access.

Figure 4 is a similar design, as in figure 1 and figure 2, but with fluorescent lamps.

Figures 5 and 6 show the placement of encapsulated fluorescent lamps inside refrigeration equipment in a vertical projection and in a horizontal projection.

7 is a detail of the encapsulated fluorescent lamps.

Fig. 8 shows details of a lighting device with encapsulated LED glow bodies.

Fig.9 - LED lighting device according to the invention for a refrigerated counter with a transparent edging.

Figure 10 is a board with LED filament bodies and corresponding electronic elements.

11 is a standard LED lighting device and

12 is an enlarged view of FIG. 9, in which the LED lighting device is interconnected directly with the functional part of the refrigeration equipment.

Figures 1 and 2 show a fragment of the cutout, as well as an enlarged image of the adjacent sections of the ends 51 from the side of the hinges of the doors 5 of the furniture for the presentation of goods with a vertical opening for access to the storage space for goods. Such doors are described in detail in the parallel patent application EP 08160330.0 of the same applicant. Between the ends 51 with the hinges of the doors 5, an intermediate space 4 is provided, which is a connection between the space for goods with the space that covers the furniture for the presentation of goods. In Fig. 1, the pivot bolts 6 are arranged concentrically consisting of a door glass 5 ', while in Fig. 2 a non-concentric arrangement is provided, while the pivot bolts 6 are located on the side of the storage space. Doors 5 do not have a door frame, that is, they consist only of ordinary insulating glass, between the glasses 5 'of which there is a spacer rail for closing the hollow space, and forming the edge 52 of the door 5. The rotary bolts 6 can be placed arbitrarily. They can be placed non-concentrically also from the side of the surrounding space. In any case, they must be placed in such a way that the door opens without any interference at least at an angle of 90 degrees and so that the intermediate space 4 overlaps in the closed position.

In this intermediate space 4, a lighting device is located, which consists of glow bodies 1 - in this case, from LED glow bodies - with lenses 11. The glow bodies 1 are arranged so that they directly communicate with the storage space of goods, while heat bodies 1 heat is removed to the outside by a device for removing heat 3, 31 through the intermediate space 4. Heat bodies 1 and lenses 11 are held by a carrier 2, which is connected to a radiator 31 through a heat sink 3.

The supporting element 2, the heat sink 3 and the radiator 31, it is advisable to combine in one profile, which passes through the intermediate space 4 from the storage space of goods to the surrounding space. As a result of this combination, a functional element of the refrigeration equipment is formed, which provides effective heat removal, since there is no need to use transitional resistances from one structural unit to another. In contrast to figure 1, the heat sink in the embodiment according to figure 2 is significantly reduced, so that the glow body of the light emitting diode with the lens 11 is located in the intermediate space 4. The radiator 31 is simultaneously made in the form of a stop for doors 5 in the closed position. As a result of this, the pivoting doors 5 are fixed respectively in the closed position, and heat is transferred from the radiator 31 to the glass edge. To seal the storage space relative to the intermediate space 4 and the environment, a seal 7 is provided, which is located at the end 51 from the side of the hinges of the door 5 parallel to the edge 52. When closing the pivot door 5, this seal 7 abuts the supporting element 2 and seals, thus space for storing goods relative to a device for removing heat.

When LED light is generated, quite a lot of technological heat is generated and for this reason LED lamps require cooling, which is usually located behind the glow body. As shown in FIGS. 10 and 11 separately, the LED filament body consists of LEDs 1, which are located on the circuit board 100 with the corresponding electronic elements 101. The individual circuit boards are connected to each other by means of solders 102 and directly communicate with the radiator 31. These are ordinary standard LED lights can be purchased in any desired length, but it is often difficult to mount. According to the invention, the LED filament body 1 must be placed inside the space for storing goods. To remove heat from the filament body 1, which is located inside the storage space for goods, a heat sink 3 is provided outside, which adjoins directly to the supporting element 2, which holds the board 100 with the LED filament body 1 and, thus, removes heat outside to the radiator 31. B As a result of this separation, a lighting device, which saves a lot of energy, is formed between the radiator 31 and the filament body 1, since all the light power is emitted directly into the storage space of goods, while the image The heat that is being removed is removed. Since the LED light is cold, it does not emit any radiation that could heat a refrigerated product or storage space.

In the embodiment of FIG. 1, the heat sink 3 is located in the intermediate space 4, respectively, against the edges 52 of the doors 5. This arrangement has the advantage that the heat sink 3 radiates heat to the edges 52, and they heat up, so that fogging of the glasses is prevented 5 'from the edge 52. This danger arises, in particular, under the influence of insulating glasses 5' closing the cavity and forming spacer rails forming the edge 52, which are usually made of a metal profile and thus form a cold mos teak. The heat sink 3 gives off residual heat to the radiator 31, which protrudes in the surrounding space.

In the exemplary embodiment of FIG. 2, a heat sink seal 71 is located on the radiator 31, through which heat is removed through the contact in the closed position to the ends 51 of the glass 5 'from the hinge side so as to prevent fogging. In FIG. 2, the hinge-side glasses 5 ′ project above the edge 52. To protect the edge 52, this space is covered by an edge filler 53, preferably made of plastic.

The lighting device is preferably made in the form of a modular unit and is easily installed in the intermediate space 4. The electrical connection is made using a cable lug (not shown), the fastening is done using the locking bolt 74, which engages with the hole 73 of the magnetic holder 72. The glow body 1 the LED is closed by a lens 11 and through a heat sink 3 (not shown) is connected to a radiator 31, which at the ends is made in the form of a protective profile 13, so that in the closed position of the doors it is intermediate closed e space 4. Also in this case, as described above, the protective profile 13, the radiator 31, and the heat sink 3 can be combined with the supporting element 2 in one functional unit of the refrigeration equipment, on which the glow body 1 of the LED is directly fixed. Further, this functional unit can simultaneously be made in the form of a support and, thus, increase the rigidity and bearing capacity of refrigeration equipment.

Figure 4 shows another exemplary embodiment in which the lighting device as a luminous body is equipped with a vertically mounted fluorescent lamp 1 instead of the LED glow body. A heat removal device is provided for this fluorescent lamp 1, which is positioned so that the heat produced by the fluorescent lamp 1 is transferred outside the storage space of the goods. It is equipped with a housing 12, which surrounds the fluorescent lamp 1 at a distance, so that between the housing 12 and the fluorescent lamp 1, an intermediate space is formed, which is used as an air channel 33. In order for the ultraviolet radiation of the fluorescent lamp 1 not to fall into the storage space for goods, the housing 12 on this side is equipped with a filter 122, while the rear side turned to the surrounding space is made in the form of a reflector 121. The housing 12 is equipped with a lower supply air vent 123 and upper exhaust port 124 (FIG. 5). Under the influence of these two holes, traction occurs, so that an air stream is formed in the air channel 33, which transfers heat from the lamps up to the exhaust hole 124, where it goes into the surrounding space. Thus, it is possible to provide direct illumination of the space for storing goods, while the heat generated under the action of the luminous body 1 does not reach the space for storing goods, but is diverted from it.

This lighting device can be placed both in the intermediate space 4 and in the space for storing goods, for example, in the corner region to the side wall 62, where the intermediate space 4 is not formed between the two ends 51 from the side of the door hinges 5, as is obvious in FIG. .5 and Fig. 6. In the vertical projection of FIG. 5, the left door 5 is released to provide an overview of the shelf compartments 64 and the housings 12. The housings 12 can, however, also be rotatable, so that the angle of illumination can be adjusted according to need.

According to Fig. 8, instead of fluorescent lamps, an LED filament body 1 can also be used. Since it does not produce ultraviolet radiation, it will be sufficient to protect the filament body 1 with a conventional lens 11, while the heat dissipation device is enclosed in the air channel 33 to remove the heat generated there. For this purpose, the enclosing tube 12 is preferably made of a U-shaped profile 15, which ends with a supporting element 2, on which the lens 11 is mounted. This embodiment can be located as an independent lighting device directly in the storage space of goods, and in the intermediate space 4. However, as shown in FIG. 5, it is necessary to provide a supply air vent 123 and a corresponding exhaust port 124 in order to remove heat into the surrounding space.

A device for removing heat, both according to Figs. 1-4, and according to Fig. 8, can additionally be made in the form of a support and, therefore, be a functional part of the refrigeration equipment to give it rigidity and additional bearing capacity.

As already mentioned above, it will be advisable if the heat emanating from the glowing body 1 is not only removed, but also used. In this case, there is no need to use incandescent filaments 34, which are usually located in the edge 52. The additional energy necessary for this is saved, since the waste heat of the filament bodies 1 is used to heat the edges 52 and the ends 51 of the doors 5 from the hinge side. By laying the so-called “Heat-pipe” 32 in the edge 52, which then covers all the glass, access is made to all areas of the door 5 exposed to the risk of condensation. Since the heating of the edges 52 remains turned on at night too , it is necessary to leave the lighting turned on at night too, in order to supply heat for heating the edges 52 instead of the no longer used filaments 34. True, it was found that the waste heat from the reduced lighting is sufficient to prevent The formation of condensation at the edges 52 of the door 5. Therefore, it would be impractical to leave the lights turned on at full power at night.

For this reason, according to the present invention, there is provided a switching device comprising, for example, a light controller with which fluorescent lamps can be turned on at reduced power. The switching device can also be made in such a way that the lighting, although it will turn on and off in cycles, but give out the light power only during the third part or half of the time. Also in this way, it is possible to ensure sufficient heating of the edges 52. However, such switching on and off is suitable only for LED glow bodies. In a preferred embodiment, the LED luminaires are divided into two switching circuits, while at night only one of the two switching circuits is switched on, so that only every second or third glow body gives off heat in night illumination.

The invention can be used not only in furniture for the presentation of goods, which has a vertical opening for access to the storage space of goods, divided into vertically stacked shelves 64, and which can be closed using transparent horizontally movable doors 5. Fig. 9 shows another example of the invention in furniture for the presentation of goods in the form of a refrigerated counter, which has movable protective covers over the opening for access to the refrigerated counter to open it as well as a transparent edging 54 of glass fixed to the furniture, serving as a holder of a lighting device for lighting a refrigerator. As, in particular, described in the earlier patent application EP 1686336 A2, the base profile 14 is provided along the length of the refrigerated counter, provided for attaching various modular elements that serve to equip the ceiling. In particular, this base profile 14 is also the holder of the lighting device. In this embodiment, the lighting device is placed, as a rule, outside the space for storing goods in order to prevent the release of heat and ultraviolet radiation emitted from fluorescent lamps on the chilled product placed in the space for storing goods. However, according to the invention, a lighting device is installed inside the storage space for goods, which contains an LED glow lamp 1 with a lens 11 and both are mounted on a carrier 2, which in turn is fixed to the base profile 14. Next, the handrail 75 is fixed to the base profile 14 and also guide rails 76, holding lids 77 and 78. The base profile 14 is made in the form of a device for removing heat and therefore consists of a heat-conducting material, such as aluminum. To ensure effective heat transfer to the edge 52 of the edging 54 of the glass base profile 14, it is advisable to install directly on the frame of the glass 55 edging 54 of the glass. The profile extends from the inside of the storage space to the outside of the edging 54 of the glass, so that the process heat generated by the glow body 1 is removed from the storage space of the goods to the outside. Since the base profile 14 covers the edging 54 of the glass, it transfers its heat to the edge 52 of the edging 54 of the glass, so that the edging 54 of the glass, consisting of insulating glass with a frame for glass 55, is heated in this area. As a result of this, the need for conventional filaments 34 is eliminated. The energy for heating these filaments is saved.

To simplify and for better heat dissipation, the supporting element 2 can be combined with the base profile 14 into one functional part. 12 shows a design in which the filament 34 is also unnecessary. The base profile 141 has a surface 22 on which the board 100 with the filament bodies 1 is placed. Further, holders 21 are provided for fixing the lens 11 for closing the LED filament body 1. Therefore, the base profile 141 covers the edge 52 of the edging 54 of the glass and directly receives heat from the LED glow body 1 and directs it to the edge 52 of the edging 54 of the glass with the glass mandrel 55, resulting in the heating 52 etsya. The base profile 141 itself is made of a heat-conducting material, for example, in the form of an aluminum profile, so that a large cooling surface is formed to remove heat generated in the glow bodies 1. This has a particularly beneficial effect on the service life and brightness of the LED filament bodies.

Claims (29)

1. Demonstration furniture for the presentation of chilled or frozen products with a storage space for products that is at least partially covered by transparent glasses and has an access inlet for access blocked by transparent glasses, while the storage space is illuminated by lighting devices, characterized in that in the space for storing products there is a glowing body (1) of the lighting device, and a corresponding device for heat removal (3, 31, 32, 33, 12, 14) It was found in such a way that the heat generated by the glowing body (1) is removed outside the food storage space. 2. Demonstration furniture according to claim 1, characterized in that the device for heat dissipation (3, 31, 32, 33, 12, 14) is located near the edges (52) covering the space for storing glass goods (5), while the device for heat removal (3, 31, 32, 33, 12, 14) passes along the edge (52) of the glass so that the heat removed from the filament body (1) heats the edge (52) of the glass. 3. Demonstration furniture according to one of claims 1 or 2, characterized in that the device for heat removal (3, 31, 32, 33, 12, 14) is made as a functional unit of the refrigeration equipment. 4. Demonstration furniture according to claim 1 with a vertical opening for access to the storage space of goods, divided into compartments vertically located one above the other, and on the front side accessible to the buyer made with the possibility of closing with transparent, horizontally movable doors (5), where between the ends (51) with the hinges of the doors (5) an intermediate space (4) is provided, in the area of which the glowing bodies (1) of the lighting device are located so that they directly communicate with the space for storage of goods, while the heat released by the glowing bodies (1) is removed to the outside by a heat removal device (3, 31, 32, 33) through the intermediate space (4). 5. Demonstration furniture according to claim 1, characterized in that the lighting device comprises LED glowing bodies (1), which are located in the space for goods, and a heat dissipation device for LED glowing bodies (1) is equipped with a heat sink (3) and a radiator (31 ), while the LED glow bodies (1) and the radiator (31) are connected to each other through a heat sink (3). 6. Demonstration furniture according to claim 2, characterized in that the heat sink (3) passes along the edge (52) of the glass, so that the heat removed by the heat sink (3) heats the edge (52) of the glass. 7. Demonstration furniture according to claim 2, characterized in that the radiator (31) is made in the form of a profile that extends along the length of the edge (52) of the glass. 8. Demonstration furniture according to claim 4, characterized in that the radiator profile (31) with the door closed (5) overlaps the intermediate space (4) between the two adjacent doors (5). 9. Demonstration furniture according to claim 5, characterized in that the supporting element (2) for LED lamps combines a heat sink (3) and a radiator (31) of refrigeration equipment into one functional unit on which LED glow bodies (1) are directly mounted. 10. Demonstration furniture according to claim 9, characterized in that the supporting element (2) enters the space for storing goods, the heat sink (3) is passed through the intermediate space (4) between two adjacent doors (5), and the radiator (31) fixed at its end outside the space for storing goods. 11. Demonstration furniture according to claim 1, characterized in that the radiator (31) is made in the form of a stop for the glass (5 ') of the door (5). 12. Demonstration furniture according to claim 4, characterized in that a seal (7) is located between the supporting element (2) and the end (51) that rotates into the storage space for goods (51) with door hinges (5). 13. Demonstration furniture according to claim 12, characterized in that the seal (7) is fixed to the end (51) with hinges for the door (5). 14. Demonstration furniture according to claim 1, characterized in that the lighting device as an incandescent body is equipped with an upright fluorescent lamp (1), which is located in the storage space for goods, as well as a corresponding device for heat removal (12, 121, 122, 123, 144) for her. 15. Demonstration furniture according to claim 14, characterized in that the corresponding heat dissipation device consists of a housing (12) holding a fluorescent lamp (1) at a distance, which contains a filter (122). 16. Demonstration furniture according to claim 14 or 15, characterized in that the corresponding heat dissipation device (33) consists of a housing (12) holding a fluorescent lamp (1) at a distance that has a reflector (121). 17. Demonstration furniture according to claim 15, characterized in that the air channel (33) formed by the luminaire (12) of the fluorescent lamp (1) has a supply air vent (123) on the lower side and an exhaust vent (124) at the upper end As a result, the generated heat is removed by the air stream. 18. Demonstration furniture according to claim 14, characterized in that the lighting device instead of a fluorescent lamp is equipped with an LED glow body (1). 19. Demonstration furniture according to claim 14, characterized in that the lighting device is located in the intermediate space (4) between the ends (51) with the door hinges (5). 20. Demonstration furniture according to claim 14, characterized in that the edge (52) of the door (5) is equipped with a heating pipe (32). 21. Demonstration furniture according to claim 14, characterized in that the device for removing heat (3, 12, 15, 33) is made in the form of a support and, thus, represents the functional part of the refrigeration equipment. 22. Demonstration furniture according to claim 1 in the form of a refrigerated counter, which is equipped with movable protective covers over the access opening for its opening, as well as a transparent glass edging (54) fixed to the furniture, which serves as the holder of the lighting device for lighting the refrigerator compartment and passing along the length of the refrigerated counter base profile (14) to accommodate various modular parts, where an LED glow body (1) is fixed on the base profile (14), which enters the space for storing goods. 23. Demonstration furniture according to claim 22, characterized in that the LED glow body (1) held on the circuit board (100) is fixed directly to the base profile (141). 24. Demonstration furniture according to claim 22 or 23, characterized in that the base profile (141) is made of heat-conducting material and covers the edge (52) of the edging (54) of the glass so that the edge of the glass (52) is heated. 25. Demonstration furniture according to claim 22, characterized in that the base profile (141) has a surface (22) for accommodating a board (100) with an LED glow body (1), as well as a holder (21) for attaching a lens (11). 26. Demonstration furniture according to claim 1, characterized in that it contains a switching device, which for a night mode of operation reduces the illumination power of the glowing body (1). 27. Demonstration furniture according to claim 14, characterized in that it comprises a light controller for fluorescent lamps (1). 28. Demonstration furniture according to claim 5, characterized in that the part of the LED glow body (1) is turned off. 29. Demonstration furniture according to claim 5, characterized in that the LED glow bodies are configured to be switched on cyclically.

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