MX2010009189A - Improved system for lighting refrigeration cabinets using led lights. - Google Patents

Abstract

The invention relates to a lighting system intended to light the interior of cabinets of the type used in commercial refrigerators, having glass doors. The system is based on a series of three interconnected LEDs mounted on a printed circuit board (PCB). The assembly is inserted into a diffusion tube, the shape of which enables optimised light emission and is designed for sections installed inside cabinet door frames. The LEDs can be powered by a current or voltage source and the manner in which the LEDs are housed along the inner periphery of the door enables the optimised lighting of the items on display.

Description

IMPROVED LIGHTING SYSTEM FOR EFFICIENCY CABINETS WITH LAMP EMITTING DIODES TECHNICAL FIELD This invention relates to systems of interior design of cabinets, such emitters, and in particular it is directed to one of them, in which diode lamps ED) are used as a source of illumination, and where said are located on the perimeter Inside the refrigerators or chillers, the light emitted into the interior of the cabinet allows optimum illumination inside the cabinet.

BACKGROUND OF THE INVENTION on the door or even on the inner side vertically or in the upper part in a horizontal manner, for the purpose of illumination to be displayed. An example of a system can be found in U.S. Patent No. 5, Ske, Sr., 1999), where a system of illumination by fluorescent lamps is available to a stringer of the interior setting frame, being hidden from view from the former a support base having its ends running along said spar, two elements for the lighting element located therein and including in some embodiments, a difu fluorescent tube. When the lamp is alight, either on the door or sideways, the available lighting systems act on larger lateral luminaires in one of the interior of the cooler. The luminaires on the door are also placed vertically to illuminate part of the product. You can use additional lscentes to be able to exhibit of better oducto, placing horizontal lamps to the transversal of the frame of the doors. However, the energy consumption is increased by heat, the emitted heat is also increased, and a very short lifetime of the fluorescent luminaire as well as the drop in illumination by the atures inside the cooler. There are also high costs for services in lighting failures. Also, when the Fluorescent luminaire has a life of between hrs, this is 1 year or less, so the luminaire or the ballast every year and the services are high. In addition, the luminaires are very sensitive to the ambient temperature and light is reached in a fluorescent luminaire at or falls rapidly when the temperature varies e, that is at low or high temperature. With the aturas the fluorescent lamps have a lighting of 20% operating at a temperature the temperatures are lower will still fall nally to this, due to the fluorescent configuration only 60% of the light is to illuminate the cabinet, the rest Escape was you. Fluorescent lamps contribute ng for refrigerated Display cases ", pages 64 - logies in Commercial Refrigeration, Univers ies at Urbana-Champaign, P.S. Hrnjak Editor, July 02).

In order to overcome the problems inherent to fluorescent lights, it has been proposed to replace this kind of lighting by series of LED lamps (emitting diodes as illustrated, for example, in United States Patent No. 6,726,341 (Pashley et al, 2004) in scribe a behavior of LED lighting-oriented lighting equipment storage is preferably illuminated inside the US Patent No. 7, vhannis ian, 2006) in turn, describes a system for low temperature environments that way that cough lighting is optimized.

In this last patent, arrays are described on support members so that they are on a circuit board and seals are linear and the reflector is distributed to the linear arrays of LEDs. Arrays, constructed of any length or configuration for a particular application, are prefixed in multiple units of illuminately interconnected with one another, with illumination of a length of only well the interconnection can be achieved by using the use of covers that include with icos subject to the ends of each unit or with a positive bus and a negative one extending from the whole card; Resistors are included in positive c bus at one end and a series of LEDs are mounted through holes in the anode of the diode is in communication with a r as the cathode of the diode contacts the adjacent anode connecting them in short series in the b to The final cathode of each series is coupled to form a predetermined group of only coupled to a single resistor in a negative ex s in the other. The assembly on the side by two end caps and one cable the ecta through the covers on the buses of the c o. A source of power is put in good contact with the circuit, providing direct current, such as vending machines, directional LED coolers that are positioned in the best way possible, the articles next to the light source, that is, in front of the cabinet, towards the door / vent. The directivity of the LEDs used only 20 ° with an illumination intensity of them and a brightness of 1000 to 3000 lumens. L ionals are located on the trays, in the m rta and / or in assembly blocks, and can be product specific diri, being adjustable. or of the invention it is mentioned that the LEDs are in the form of a tube, with a diameter of 19 to between 30 and 90 cm; Each group can c 18 and 54 LEDs. However, the invention enfacer of refrigeration illuminated by lscente located nearby and behind the glass s. Each lamp has an associated reflector tra enclosed at least partially by cos that have multiple facets in s or. The reflector and the lens cause the lamp light to be reflected and refracted in such a way that substantially uniformly distributed light is located at various distances from the reflection in the immediate vicinity in the United States Patent No. 6. , MannBattig, 2003) describes a system based on LEDs shaped into a plastic receptacle with a plate and locating carrier networks that define the best use of the angle of light or the array, being limited without However, the plastic receptacle in the direction has.

OBJECTIVES OF THE INVENTION light of the limitations and problems presented by previously proposed in the prior art of the present invention, provide a lighting fixture for refrigerators and cools with glass doors, which allows the illumination, and therefore, the exhibition of the products or of the cabinet.

Another object of the present invention is a lighting system for the interior of Gabin Plio than in conventional systems.

These and other objectives and advantages of the invention will become apparent in the light of the description, which is accompanied by a series of preferred figures of the invention, which are intended for illustrative and non-limiting purposes of the invention. .

BRIEF DESCRIPTION OF THE INVENTION This invention then refers to a system that includes a novel design of lu used primarily in cooling cabinets, based on LEDs as light sources.

The problems associated with the emission of heat The luorescent lamps in the ion systems are mounted on a PCB (Card so, for its acronym in English) and fixed in tube and fits the perimeter of the door allowing uniform ación of all the product to be exhibited.

DESCRIPTION OF THE FIGURES In order to better understand the advantages of the provision, a series of dibs are now presented which aim to illustrate the device and how to use it to be limiting.

The figure is a preferred schematic representation of a single 3-LED light module. a Figure Ib is a preferred power supply diagram of a driver for 28 LEDs.

Figure 2e is a preferred schematic representation of a driver for 34 LEDs.

Figure 3a is a perspective view of a diffuser bo of the invention.

Figure 3b is a side view of a section of the invention, showing inside a series of LEDs.

Figure 3c is an alternative front view of the diffuser tube of the invention to Figure 4 is a perspective view of a t r, located at the end thereof, showcase for the installation of the system.

Fig. 5 is a schematic view in plan view of profiles for the frame of the door, Fig. 7b is a schematic representation on series-parallel between the elements of the system in the cooler of Fig. 7a.

Figure 7c is a preferred schematic representation of the lighting elements of the present invention in a door of a commercial cooler or cooler conventionally shown in Figure 7d is a schematic representation in series between the elements of the cooler system in FIG. Figure 7c.

Figure 8a is a preferred schematic representation of the lighting elements of the present invention in a door in a commercial cooler or refrigerator conventionally shown in Figure 8b is a schematic representation of Figure 9a is a schematic representation of the preferred elements of The illumination of the present invention in a door of a commercial cooler or cooler is shown in Figure 9b is a schematic representation on a series-parallel between the elements of the system in the cooler of Figure 9a.

Figure 9c is a preferred schematic representation of the lighting elements of the present invention in a door of a commercial cooler or refrigerator conventionally shown in Figure 9d is a schematic representation in series between the elements of the cooler system. Figure 9c.

Figure 10a is a schematic representation The commercial cooler or cooler is convenient to figure. It is a schematic representation in series between the elements of the cooler system of Figure 10c.

Figure 1 is a preferred schematic representation of the lighting elements of the present invention in a door of a commercial cooler or refrigerator conventionally shown in Figure 11b is a schematic representation in series-parallel between the elements of the system in the Figure cooler lia, for a s.

Figure 11c is a preferred schematic representation of the lighting elements of the present invention in a door of a Figure 12b is a schematic representation on series-parallel between the elements of the system that illuminate the top of the cooler of the Figure 12c is a schematic representation on series-parallel between the elements of the system that illuminate the side and the lower area of Figure 12a.

Figure 13a is a preferred schematic representation of the lighting elements of the present invention in a door of a commercial cooler or refrigerator conventionally shown in Figure 13b is a schematic representation in series between the elements of the system illuminating the top of the As a source of lighting in substitution of the scented, with serious advantages in terms of quality, durability and cost of maintenance, it is also known that there is a problem to achieve a complete illumination of the interior inside cabinets. conventional commercial refrigerators. The present inigige to solve these problems, medianttes improvements to the previous art.

Source of Light It is not the problems in the use of diodes that they emit a directed light and rest at narrow radiation angles. The LED and system of the invention has a pro ° angle .- LED OF HIGH LUMINOSITY WHITE IVORY ("COLD") . - ENCAPSULATED: SUPERFLUX . - ANGLE OF DISSIPATION: HALF VALUE ANGLE. { 2 to ½) = 180 °. - FLUX LUMINOUS: 3Lm . - VOLTAGE: 3.5VDC.

. - AT A CONDITION OF 80 Ma . - DISSIPATION POWER: 350 mW The LEDs are grouped into arrays of 2 and 3 LEDs, with Ie, as schematically illustrated in the serial-parallel array figure as shown in the In such a configuration, longes can be achieved by interconnecting modules by forming, for 6, 17, 22, 28 and 34 LEDs, to adapt, making the voltage drop at the input with a 127 Vrms supply to be the same. losses in the rectification stage l use of the serial-parallel connection of the circuit protection circuit, when the series fails, thereby opening the circuit, those connected in parallel to the same current driver and due to the fact that the driver is "c respect, and to maintain the same current it is distributed among the other circuits, and the current increase can damage the rest in a cascade effect, finally damaging to. rivers Then, it guarantees a uniform DS luminosity of a group.

Figures 2a to 2e show preferred modalities suitable for the invention system of the number of LEDs in each series. To reduce the dissipation of the driver, a layer arrangement such as Cl, C2, C3, C4) is used in parallel for capacitive operation that limits the amount of current to the circuit. Subsequently, the bridge is rectified with a diode bridge (referred to as DI), finally one or two circuits are used (referred to as Ul, U2) of current preprog nte resistors designated by Rl, R2, R3, etc. cionar a quantity constant current, mA. includes 28 LEDs; and Figure 2e repotically the preferred driver for the fashion that includes 34 LEDs.

The driver designs shown here operate at 8 go and a range of operation of 90-230 VAC, and the ltage is given depending on the number of LEDs.

The electronic components of the driver are printed and stored in an injected gabin that is subsequently filled with res that the module is protected against the te.

Niformity of Illumination However, the wide angle of radiation in the system of the invention tends to present modifications in its configuration to affect the angle of illumination. l set of LEDs (320) mounted on the PCB (an and fit on the inner edges of r (300), as illustrated schematically in the so-fixed, the diffuser tube in c PCB serves as a means of heat dissipation . nsamble of the lighting modules (luminaire instead of placed in place inside the tube the PCB (330) with the series of LEDs (320), er (330) is sealed at the ends by the use of t that adjust and they are held in place by reasons, for example, by adhesive, ac in FIG. 4. The covers (400) support the tube with LED subject to perature.

Installation in the cabinet system The assembly thus formed, is airtight, for environmental humidity PROs for its fastening of the door frame of a cabinet, a support profile has been designed (illo ", shown schematically in figure 5, in turn). The profile (500) of the frame of the assembly assembly is complemented by an ico (520).

FIG. 6 shows schematically a connection between several lighting modules (6 m. with the one just described, to form one in different types of cooler and results as examples of application in relation s 7a-13b, where it can be seen that the modules of rias (600) are preferably located in the door (700) to have a uniform distribution uminar all the product to be exhibited.It is appreciated s, that it is possible to combine modules (600) of tudes in order to make more efficient The recommended lighting is the use, for example, of the lamp for the lower area of the door than for the lamp, and the use of long modules for the lamps, the details are attached to each example.

Example 1 The preferred lighting system for a light source even with the failure of any of the o. The number of LEDs and their distribution is described in 2: 2. Quantity and distribution of LEDs in a system a cooler with a short height door. minaria LEDs minery Copete (710) 21 Minaria Side (730), (740) 12 (6 on each side) lower minaria (730) 3 such 36 Figure 7b schematically represents the elements between them, illustrating the driver (705) ones for the luminaire of the crest (710) with 7 s; the luminaires on the sides (730), (740), Min Max. Unit input (RMS) Input Amp (RMS) 108 132 V he output 10 11 V Exit entity 0.960 2.38 Exit capacity 9.6 25 Watt 4. Characteristics of the LEDs for a cooler system with a medium height door.

Example 2 The preferred lighting system for one in 5. Quantity and distribution of LEDs in a system a cooler with a short height door. uminaria LEDs uminaria Copete (711) 4 Uminary Side (731), (741) 16 (8 on each side) Lower Umbrella (721) 2 otal 22 Figure 7d schematically represents the elements between them, illustrating the driver (706) for the luminaire of the crest (710) with 2 EDs; the luminaires on the sides (731), (741) s of 3 LEDs and 1 module of 2 LEDs each, lower beam (721), with a module of 2 driver LEDs and the characteristics of the array like this are shown in tables 6 Characteristics of the LEDs for a cooling system with a medium height door.

The preferred lighting system for a single-door door (800) of medium height, FIG. 8a includes one lamp for the lamp (810), another one for the lower part (820) and the door panels (830). , (840). For this system, an arrangement like the one shown in series-parallel Ib is used; That is, each module cons Luminaria LEDs Copete Luminaire (810) 21 Side Luminaire (830), (840) 18 (9 on each side) Lower luminaire (830) 3 Total 42 Figure 8b schematically represents the elements between them, illustrating the driver (805) for the luminaire of the crest (810) with 7 s; the luminaires on the sides (830), (840), s of 3 LEDs each, and the lower luminaire on a single series of 3 LEDs. The specifications of the characteristics of the LEDs for an arrangement co stran in Tables 9 and 10. . 9. Speci cations of the driver for a system p Continuous forward current 80.00 mA Feed current peak 150.00 mA (1/10 of the duty cycle, 0.1 ms of pulse width) Feed voltage 3.00 4.00 V Example 4 The preferred lighting system for a single-door door (809) of medium height, FIG. 8c includes one lamp for the lamp (811), another lamp for the lower area (821) and two door panels ( 831), (841). For this system an array like the one shown is used. The LEDs are grouped in arrays of 2 and two years in series, as schematically illustrated. The number of LEDs and their distribution are connected to each other, illustrating the driver (806) for the luminaire of the crest (811) with 2 EDs the luminaires on the sides (831), (841) s of 3 LEDs and 1 module of 2 LED each, lower ria (821), with a single module of 2 LE driver's indications and the characteristics of the arrangement like this are shown in tables 12 12. Driver specifications for a cooling system with a medium height door.

Min. Max. Input unit (RMS) 0.064 .083 Input (RMS) 108 132 V output 78.4 89.6 V output 0.075 0.105 Output 5, 88 9.408 Watt The preferred lighting system for an indoor a single door (900) of total height, figure 9a includes a luminaire (or module) of the crest (910), another one for the zone i and two for the sides of the door (930), this lighting system is used an arrangement d in figure Ib in series-parallel; that is, in turn, it is interconnected in parallel with 3 LED modules, which allows to ensure the op ua of the light source even with the failure of the D of the array. The number of LEDs and their distribution in table 14. 14. Quantity and distribution of LEDs in a system a cooler with a full height door. s of 3 LEDs each, and the lower luminaire to single series of 3 LEDs. The specifications of the characteristics of the LEDs for a co-stranded arrangement in Tables 15 and 16. 15. Driver specifications for a cooling system with a full height door. 16. Characteristics of the LEDs for a cooling system with a medium height door. of the pompadour (911), another one for zone i and two for the sides of the door (931), this lighting system uses an arrangement in Figure la. The LEDs are grouped in LED array, connected in series, as shown in Fig. A. The number of LEDs is described in Table 17.

. Quantity and distribution of LEDs in a sis a full-height door chiller.

LED luminaire Copete Luminaire (811) 4 Side Luminaire (831), 28 (14 on each side) (841) Lower luminaire (821 2 Total 34 18. Driver specifications for a cooling system with a full height door.

Characteristics of the LEDs for a cooling system with a medium height door.

Continuous feed rate 80.00 mA and feed current (1/10 of the working 150.00 mA, 0.1 ms of amplitude SW) e 3.00 4.00 V advance connected in parallel with the other 3-axis modules to ensure continuous operation of the unit with the failure of one of the LEDs of the LED array and its distribution are described in the table. 20. Quantity and distribution of LEDs in a system a narrow cooler with two height doors uminaria LEDs uminaria Copete (1010) 24 Uminary Side (1040), (1050), 48 (12 on each side) 1060), (1070) Uminary lower (1020), (1030) 6 (3 in each door) otal 78 Figure 10b schematically represents the connections between them, illustrating the driver (21. Driver specifications for a narrow cooler system with two full height doors 22. Characteristics of the LEDs for a narrow cooler system with two full-height doors Continuous advance feed 80.00 mA forward current (1/10 150.00 mA duty cycle, 0.1 ms pulse level) e advance 3.00 4.00 V LED, connected in series, as shown in Fig. a. The number of LEDs are described in Table 23: 23. Quantity and distribution of LEDs in a system a narrow cooler with two height doors uminaria LEDS uminaria Copete (1011), (1012) 8 (4 for door) uminaria Side (1041), 56 (14 on each side) 1051), (1061), (1071) Lower luminaire (1021), 4 (2 LED for door) 1031) otal 68 Figure 10 represents schematically the connections between them, for one of the doors, 24. Driver specifications for a narrow cooler system with two full height doors Characteristics of the LEDs for a narrow gauge system with two full height doors Continuous feed rate 80.00 mA and feed current (1/10 of the working 150.00 mA, 0.1 ms of amplitude SW) e advance 3.00 4.00 V connected in series and each module, in turn connected in parallel with the other 3 modules allows to ensure the continuous operation of the fu ?? with the failure of one of the LEDs of the LED array and its distribution are described in the . 26. Quantity and distribution of LEDs in a wide cooler system with two full height doors naria LEDS inaria Copete (1110), (1120) 42 (21 in each door) naria Side (1150), (1160), 48 (12 in each side) 70), (1180) inaria inferior (1130), (1140) 6 (3 in each door) puer to 96 Figure 11b schematically represents the 27. Driver specifications for a wide cooler system with two full height doors 28. Characteristics of the LEDs for a wide cooler system with two full height doors.

Continuous feed rate 80.00 mA and feed current (1/10 of the working 150.00 mA, 0.1 ras amplitude) iso) e advance 3.00 4.00 V la. The number of LEDs and their distribution are from table 29: 29. Quantity and distribution of LEDs in a wide cooler system with two doors of total height LEDS luminaire Luminary Copete (1111), (1121) 8 (4 in each door) Side Luminaire (1151), 56 (12 on each side) (1161), (1171), (1181) Lower luminaire (1131), 4 (2 in each door) (1141) Total 68 Figure 11c schematically represents the connections between them, for one of the doors of the other door, identical. Illustrated at 30. Driver specifications for a wide cooler system with two full height doors.

Characteristics of the LEDs for a wide flow system with two full height doors Continuous feed rate 80.00 mA and feed current (1/10 of the working 150.00 mA, 0.1 ms of amplitude SW) e advance 3.00 4.00 V do in Figure Ib in series-parallel; this is made up of 3 LEDs connected in series and each m, is interconnected in parallel with the other ED, which allows to ensure the continuous operation of light even with the failure of any of the L or. The number of LEDs and their distribution is described in 32: 32. Quantity and distribution of LEDs in a system a cooler with three doors of total height. ia LEDs ia Copete (1210), (1220) 48 (24 in each luminaire) ia Side (1260), (1270), 72 (12 in each side) , (1290), (1300), (1310). ia lower (1130), (1140), 9 (3 in each door) 129 Driver specifications for luminar crests for a system for a cooler with three doors of total height. 34. Characteristics of the LEDs for a wide cooler system with two full height doors.

DS for an arrangement like this are shown in 6. 35. Driver specifications for a cooler system with three full height doors. 36. Characteristics of the LEDs for a cooling system with 3 full height doors.

This lighting system employs an arrangement in Figure la. The LEDs are grouped into 3 LEDs, connected in series, as shown in Figure 1. The number of LEDs are described in Table 37: 37. Quantity and distribution of LEDs in a system a cooler with three doors of total height. aria LEDs Aria Copete (1410), (1420), (1430) 12 (4 for door) Aryan Side (1510) (1520), (1530), 84 (14 on each side) ), (1550.} and (1560). lower aria (1610), (1620), (1630) 6 (2 in each door) 102 Figure 13b schematically represents the connections between them, for one of the doors, at 38. Specifications of the driver for the luminary crest of a system for a cooler with three full-height doors. 39. Characteristics of the LEDs for a wide cooler system with two full height doors.

Continuous feed rate 80.00 mA and feed current (1/10 of the working 150.00 mA, 0.1 ms of amplitude SW) e advance 3.00 4.00 V W and voltage range 108-132 VAC.

With the system proposed in the invention, the con a is up to 60% lower than with a fluorescent system, as shown in the table n of OV is minimal and is practically not considered. bla 40. Comparison of operating parameters in more lighting of fluorescent lamps and Type of lighting Fluorescent LEDs or expected life 9,000 100, 000 s) or expected life 1.2 11.4 ) mo energy (watts) 20 8 energy meter 175.2 70.08 Annual side (kw-hr)

Claims (1)

1. NOVELTY OF THE INVENTION The invention being described as above, it is novelty and, therefore, it is claimed as a subject in the following: CLAIMS . A lighting system for the cooling interest of the commercial type, with room, which includes modules formed by: . a light source, based on adas lamp to each other. . a driver or rectifier circuit with regular power supply to the light source. a diffuser tube to contain the set os in the driver, said illuminated system because: or of capacitors in parallel for which, prior to rectification, linear integrated current currents of preprog resistance are used to provide a current cnt; the set of LEDs mounted on the Pulan inside the diffuser tube, which f as a means of heat dissipation; the LEDs PCBs are kept inside the diffuser tube sealing caps at both ends of r; wherein said airtight covers allow that of their wall, from the electrical connectors to the current to the assembly; the modules can be connected to each other for different lengths; Y The luminaires thus formed can be bristled because the driver has an operating range of 30 VAC. . The lighting system for gabinet eration, in accordance with the claim made because the LED lamps used uminosidad, of the order of 80 mA. . The lighting system for cabinetry, in accordance with the claimed because the LED lamps that are used uio projection from 120 ° to 180 °. . The lighting system for cabinet, in accordance with the claimed because the PCB containing the components, is safeguarded in a plastic injected resin cabinet. . The illumination system for the cabinet . The lighting system for cabinet, in accordance with the claim because once the set is inserted into the diffuser tube, it closes hermetically sealed l to fit on both ends. . The lighting system for gabinet eration, in accordance with the claim bristling because the covers of the diffuser tube are f. 0. The illumination system for gabinet eration, in accordance with that claimed because in order to maintain the airtightness, the diffuser tube is held in place by professionals, for example by the use of adhesive. 1. The lighting system for storage, in accordance with the claim 3. The lighting system for cabinet, in accordance with the claim because the plastic material is preferred. 4. The lighting system for cabinet, in accordance with the claimed because the set of PCBs and stop them act as dissipation means of going this to the body of the molding in which it would be inaría. 5. The lighting system for cabinetry, in accordance with the claim bristling because each module encapsulated of L a with others to form a luminaire of the l, according to the need of the illuminac