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US20090244884A1 - Glass door merchandiser having led lights and mounting assembly therefor - Google Patents

Glass door merchandiser having led lights and mounting assembly therefor Download PDF

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Publication number
US20090244884A1
US20090244884A1 US12416052 US41605209A US2009244884A1 US 20090244884 A1 US20090244884 A1 US 20090244884A1 US 12416052 US12416052 US 12416052 US 41605209 A US41605209 A US 41605209A US 2009244884 A1 US2009244884 A1 US 2009244884A1
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Grant status
Application
Patent type
Prior art keywords
door
lighting
framing
light
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US12416052
Inventor
Steven L. Trulaske, Sr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
True Manufacturing Co Inc
Original Assignee
True Manufacturing Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS
    • F25D27/00Lighting arrangements
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47FSPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00Show cases or show cabinets
    • A47F3/001Devices for lighting, humidifying, heating, ventilation
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47FSPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS
    • A47F3/00Show cases or show cabinets
    • A47F3/04Show cases or show cabinets air-conditioned, refrigerated
    • A47F3/0404Cases or cabinets of the closed type
    • A47F3/0426Details
    • A47F3/043Doors, covers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF
    • F21S4/00Lighting devices or systems using a string or strip of light sources
    • F21S4/20Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00Uses or applications of lighting devices or systems not provided for in codes F21W2101/00 - F21W2121/00
    • F21W2131/30Lighting for domestic or personal use
    • F21W2131/305Lighting for domestic or personal use for refrigerators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

A refrigerator unit with a lighted door including a cabinet including a top, bottom and opposed sides defining a front opening. The refrigerator further includes a door including a door frame mounted to the cabinet, said door frame having an inside and outside and including a top framing member, a bottom framing member, opposed side framing members and a glass panel having an exterior and an interior. Finally, provided is a lighting assembly attached to at least one of the top framing member, a bottom framing member and opposed side framing members. The lighting assembly includes a channel for maintaining a plurality of LEDs. The channel is disposed at an angle to direct light from the LED either parallel to the glass plane or at an oblique angle thereto. The system may reduce the intensity of the light when the door is opened. A method for operating a refrigerator is also disclosed.

Description

  • [0001]
    The present application claims priority to U.S. Provisional Patent Application Ser. No. 61/041,232 filed Mar. 31, 2009, the contents of which are incorporated herein by reference.
  • FIELD OF THE INVENTION
  • [0002]
    This invention relates to interior lighting for refrigerator units such as merchandisers having cabinets with glass doors, and particularly to a mounting structure for LED lights that conceal the lights on the inside of a refrigerator door.
  • BACKGROUND OF THE INVENTION
  • [0003]
    Lighting is necessary within refrigerator units and particularly free standing merchandisers of the type under consideration. Such lighting is usually provided by means of elongate fluorescent tubes and has been provided in the upper portion of the cabinet or upon the doors. This arrangement illuminates the upper shelving well but is not entirely satisfactory for illuminating the lower shelving. Lighting can also be provided at the rear or the sides of the cabinet. However, this arrangement tends to be unsightly because the lighting assembly is visible from the outside of the unit through the glass doors. In refrigerators such as glass door merchandisers, unlike typical refrigeration units, the light stays on while the door is closed and provides illumination upon the contents of the refrigerator.
  • [0004]
    Additionally, the assignee of the present invention owns U.S. Pat. No. 5,699,676 which is directed to an invention for mounting a fluorescent tube light on a refrigerator door. However, fluorescent lighting is not as efficient as LED lighting and also has difficulty in extremely cold environments, such as coolers that must keep items such as ice cream very cold. Moreover, fluorescent lights have a limited lifespan and incorporate ballasts that similarly have a limited lifespan.
  • [0005]
    A difficulty with LED lighting is providing a system whereby it can be used in a refrigerator structure. First of all, LED lights are much smaller than typical fluorescent tubes and therefore must shine with a greater intensity in order to provide the same amount of light. As a result, when a user opens the door of a refrigeration unit the user is blinded by the intense light put forth by the LED lights when LED lights are mounted as with prior art lights.
  • [0006]
    Therefore, there is a need in the art to mount LED lights within a glass door merchandiser or refrigerator in a manner that is not unsightly and does not shine directly into the eyes of the user of the merchandiser or refrigerator and thereby annoying the user.
  • SUMMARY OF THE INVENTION
  • [0007]
    The present invention provides a refrigerator unit with a lighted door including a cabinet including a top, bottom and opposed sides defining a front opening. The refrigerator further includes a door including a door frame mounted to the cabinet, said door frame having an inside and outside and including a top framing member, a bottom framing member, opposed side framing members and a glass panel having an exterior and an interior. Finally, provided is a lighting assembly attached to at least one of the top framing member, a bottom framing member and opposed side framing members. The lighting assembly includes a channel for maintaining a plurality of LEDs. The channel is disposed at an angle to direct light from the LEDs either parallel to the glass panel or at an oblique angle thereto. The system may reduce the intensity of the light when the door is opened.
  • DESCRIPTION OF THE DRAWINGS
  • [0008]
    FIG. 1 is a front view of a refrigerator unit using the door mounted lighting system according to an embodiment of the present invention;
  • [0009]
    FIG. 2 is a plan view of the unit according to an embodiment of the present invention;
  • [0010]
    FIG. 3 is a perspective view of the inside of a door frame according to an embodiment of the present invention;
  • [0011]
    FIG. 4 is a cross-sectional view taken on Line 4-4 of FIG. 3 according to an embodiment of the present invention;
  • [0012]
    FIG. 5 is a perspective view of the inside of a portion of a door frame according to an embodiment of the present invention; and
  • [0013]
    FIG. 6 is a cross-sectional view taken on Line 5-5 of FIG. 4.
  • DESCRIPTION OF THE PREFERRED EMBODIMENT
  • [0014]
    While this invention is susceptible of embodiment in many different forms, there is shown in the drawings and will herein be described in detail preferred embodiments of the invention with the understanding that the present disclosure is to be considered as an exemplification of the principles of the invention and is not intended to limit the broad aspect of the invention to the embodiments illustrated.
  • [0015]
    The preferred embodiment of the invention provides door mounted lighting for LED lights or LED circuit boards within free standing refrigerator units having cabinets with glass doors. The LED lights are substantially concealed from view from the outside of the cabinet when the door is closed. The LED lights do not interfere with the contents of the cooler such as to minimize the refrigerator's capacity. The preferred embodiment includes a channel defined by the door frame for receiving a LED light assembly that preferably includes an LED light or plurality of LED lights that may be discrete elements attached to a base unit or a LED lights mounted to a circuit broad. Optionally, the channel may be defined by a unit mounted to the door frame or manufactured integrally therewith. The LED light assembly is preferably angled obliquely or parallel to the glass of the glass door merchandiser. Finally, optionally, a cover interfits with said channel in a snap-fitting relationship to provide protection and to diffuse said light.
  • [0016]
    A preferred embodiment of the present invention is shown in FIGS. 1-3. It will be understood that the refrigeration unit shown is a merchandiser 10 which includes a lower portion providing a compressor housing 11 and an upper portion providing a cabinet 12. As shown, the cabinet 12 includes a top 14, a bottom 15 and opposed sides 16 defining an opening 18. The opening 18 in the embodiment shown includes a pair of doors 20 which are substantially identical, each door 20 being attached to one of said cabinet sides 16 in swinging relation to said door opening 18. While the preferred embodiment includes a pair of doors 20, one of ordinary skill in the art would recognize that the present invention is not limited to any specific number of doors.
  • [0017]
    Each door 20 includes a door frame 22 and a top and bottom pivot attachment 24 by which it is attached to the cabinet 12. Each door frame 22 includes a top framing member 50, a bottom framing member 51 and side framing members 30 and 31. The cross section of the top, bottom and side framing members 50, 51, 30 and 31, which are mitered at the corners, is substantially the same. The side framing members 30 and 31 are substantially identical and are adapted to suit a lighting assembly 100, as will be described. The side framing member 31 may also be equipped with a lighting assembly 100, as desired. The top and bottom framing members 50 and 51 are substantially identical. The top and bottom framing members may include lighting assemblies 100, as desired. The doors 20 include a glass panel 44.
  • [0018]
    The lighting assembly 100 is shown in FIG. 4 and includes a box section 102 that comprises a door frame member 51 in FIG. 4 (but is representative of any frame member 30, 31, 50 or 51) comprising a pair of frame member portions 104 and 106. Attached to a frame member portion 106 is a lighting assembly 108. The lighting assembly 108 comprises a weather seal retaining portion 110 and a lighting element retaining portion 112. The weather seal retaining portion 110 retains a weather seal 114 thereto using a barbed connector 116 pushed through a bore of the weather seal retaining portion 110. The lighting element retaining portion 112 comprises a triangular portion 118 that extends rearwardly into the merchandiser 10 (upwardly in FIG. 4) from the weather seal retaining portion 110. The triangular portion 118 comprises two extensions 119 that define a channel 120 in which a light element substrate 122 is mounted. The light element substrate 122 has one or more LEDs 124 attached thereto. A diffuser or a plurality of diffusers are attached over the LEDs 124 and onto the extensions 119 to diffuse light from the LEDs 124.
  • [0019]
    The triangular portion 118 acts to shine light from the LEDs at an oblique angle to the glass panel 44 of the door such that a user looking into the merchandiser 10 does not have light from the LEDs 124 shone directly in his face. Moreover, to reduce the effect of the LED light on the user who opens the merchandiser door 20 to remove an item, the merchandiser 10 includes a switch assembly 130 to detect when a door 20 has opened. The switch can be any known switch, such as a rocker switch, capacitive switch, Hall Effect sensor, etc. When said door 20 is opened, the merchandiser 10 includes a circuit that reduces the power to the LEDs such that the LEDs are dimmed when the door is opened. The dimming of the LEDs prevents the user from having intense LED light shone in his eyes while opening the door and removing an item, while still providing high intensity light to the interior of the merchandiser 10 when the door is closed so that users can view the items therein through the glass panel 44. Preferably the light is dimmed to about 40-99% of the closed lighting level when the door is opened, more preferably about 50-90% when the door is opened, more preferably about 70-90% when the door is opened, most preferably by about 80% when the door is opened.
  • [0020]
    In a second embodiment of the present invention, shown in FIGS. 5 and 6, there is the door 20 with the side framing member 31 and bottom framing member 51 having the box section 102 comprising the two frame member portions 104 and 106. A lighting assembly 200 is mounted thereto. The lighting assembly 200 comprises a weather seal retaining portion 202 and a lighting element retaining portion 204. A weather seal may be attached to the weather seal retaining portion 202 as in the first embodiment, above. The lighting element retaining portion 204 comprises an extension 206 defining a channel 207 into which a lighting element substrate 208 may be inserted having one or more LEDs 210 mounted thereto. The LED assembly 200 directs the light from the LEDs 210 in a direction parallel to the glass panel 44 of the door 20. In this embodiment, the dimming of the LEDs when the door 10 is open may be similarly employed.
  • [0021]
    The above examples show that the invention, as defined by the claims, has far ranging application and should not be limited merely to the embodiments shown and described in detail. Instead the invention should be limited only to the explicit words of the claims, and the claims should not be arbitrarily limited to embodiments shown in the specification. The scope of protection is only limited by the scope of the accompanying claims, and the Examiner should examine the claims on that basis.

Claims (17)

  1. 1. A refrigerator unit with a lighted door comprising:
    a cabinet including a top, bottom and opposed sides defining a front opening;
    a door including a door frame mounted to the cabinet, said door frame having an inside and outside and including a top framing member, a bottom framing member, opposed side framing members and a glass panel having an exterior and an interior; and
    a lighting assembly attached to at least one of the top framing member, the bottom framing member and opposed side framing members, the lighting assembly comprising a channel for maintaining a plurality of LEDs, the channel disposed at an angle to direct light from the LEDs either parallel to the glass plane or at an oblique angle thereto.
  2. 2. The refrigerator unit of claim 1 further comprising a door switch that provides a signal indicating whether the door of the refrigerator unit is open and a circuit for reducing electrical power to one or more of the LEDs to reduce the intensity of light from the LED(s) when the door is open and increasing the electrical power to one or more of the LEDs to increase the intensity of light from the LED(s) when the door is closed.
  3. 3. The refrigerator unit of claim 2 wherein the lighting is decreased to about 40-99% of a closed level when the door is opened.
  4. 4. The refrigerator unit of claim 2 wherein the lighting is decreased to about 50-90% of a closed level when the door is opened.
  5. 5. The refrigerator unit of claim 2 wherein the lighting is decreased to about 70-90% of a closed level when the door is opened.
  6. 6. The refrigerator unit of claim 2 wherein the lighting is decreased to about 80% of a closed level when the door is opened.
  7. 7. The refrigerator unit of claim 1 wherein the channel is disposed at an angle to direct light from the one or more LEDs at an oblique angle to the glass panel.
  8. 8. The refrigerator unit of claim 1 wherein the channel is disposed at an angle to direct light from the one or more LEDs at a 45 degree angle to the glass panel.
  9. 9. The refrigerator of claim 1 wherein the lighting assembly further comprises a weather seal retaining portion for retaining a weather seal thereto.
  10. 10. A method of operating a refrigeration unit comprising:
    providing a refrigeration unit with a cabinet including a top, bottom and opposed sides defining a front opening;
    providing a door including a door frame mounted to the cabinet, said door frame having an inside and outside and including a top framing member, a bottom framing member, opposed side framing members and a glass panel having an exterior and an interior; and
    providing a switch for indicating whether the door of the refrigeration unit is open or closed;
    providing a lighting unit for lighting an interior of the cabinet; and
    providing a circuit for illuminating the lighting unit at a first intensity when the switch indicates that the door is open and illuminating the lighting unit at a second, lower intensity when the door is closed.
  11. 11. The method of claim 10 further comprising the step of orienting the lighting unit to direct light either parallel or obliquely to the glass panel.
  12. 12. The method of claim 10 further comprising the step of orienting the lighting unit to direct light obliquely to the glass panel.
  13. 13. The method of claim 10 further comprising the step of orienting the lighting unit to direct light at a 45 degree angle to the glass panel.
  14. 14. The method of claim 10 wherein the second, lower intensity about 40-99% of the first intensity.
  15. 15. The method of claim 10 wherein the second, lower intensity about 50-90% of the first intensity.
  16. 16. The method of claim 10 wherein the second, lower intensity about 70-90% of the first intensity.
  17. 17. The method of claim 10 wherein the second, lower intensity about 80% of the first intensity.
US12416052 2008-03-31 2009-03-31 Glass door merchandiser having led lights and mounting assembly therefor Abandoned US20090244884A1 (en)

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US4123208 true 2008-03-31 2008-03-31
US12416052 US20090244884A1 (en) 2008-03-31 2009-03-31 Glass door merchandiser having led lights and mounting assembly therefor

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Cited By (18)

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US20100061079A1 (en) * 2008-09-10 2010-03-11 Haier Group Corporation Refrigerator
US20100295425A1 (en) * 2009-05-22 2010-11-25 Lg Electronics Inc. Decorative panel and refrigerator having the same
US20110005258A1 (en) * 2009-07-09 2011-01-13 Mathieu Audet Method and system for managing appliance equipments
US20110266929A1 (en) * 2010-01-27 2011-11-03 Automed Technologies, Inc. Medical supply cabinet with lighting features
WO2011143705A1 (en) * 2010-05-21 2011-11-24 Maslen Technology Australia Pty Ltd Internal lighting for refrigerated display cabinets
CN102384625A (en) * 2011-10-28 2012-03-21 合肥华凌股份有限公司 Door body for refrigerator and refrigerator with same
US20130229789A1 (en) * 2010-11-15 2013-09-05 Syuuichi Yoshida Showcase
US20140160731A1 (en) * 2011-01-24 2014-06-12 Wanjiong Lin Led lamp and illumination area having same
US20150090163A1 (en) * 2013-09-27 2015-04-02 Rhino Metals, Inc. Interior safe door overlays
US20150219389A1 (en) * 2014-02-03 2015-08-06 Isee Store Innovations, Llc Illuminating display cooler assembly
USD745580S1 (en) 2014-09-10 2015-12-15 Leer, Inc. Merchandiser
US20160100698A1 (en) * 2014-10-10 2016-04-14 Joseph R. Clark Product display case or hot plate display case having an edge-mounted led array for illuminating a light pipe for illuminating the interior portion of the product display case or hot plate display case, and/or an edge mounted led array for illuminating a glass shelf within the product display case or hot plate display case
USD775882S1 (en) 2014-10-24 2017-01-10 Leer, Inc. Merchandiser
USD783063S1 (en) 2014-10-24 2017-04-04 Leer, Inc. Door with handle for merchandiser
USD789714S1 (en) 2014-10-24 2017-06-20 Leer, Inc. Merchandiser
US20170257956A1 (en) * 2014-07-28 2017-09-07 Lg Electronics Inc. Transparent display device
US9801474B2 (en) 2014-10-01 2017-10-31 True Manufacturing Co., Inc. Edge-lit door for refrigerator unit
US9918566B2 (en) 2016-06-16 2018-03-20 Anthony, Inc. Display case door assembly with vacuum panel and lighting features

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