Sensor Actuated Door Lighting
Disclosed is commercial refrigerator display that allows for the automatic illumination of the refrigerator contents in the presence of a consumer. Illumination is provided by a series of light emitting diodes (LEDs) which are positioned on an internal surface of one of the mullions that make up the compartment frame. These LEDs are interconnected to both a power source and one or more sensors. The sensors are preferably motion sensors that can detect the presence of an individual near the refrigerator housing. Thus, when an individual is detected, the sensor supplies power to the LEDs to thereby illuminate the interior of the refrigerated compartment. The present invention also relates to the bracket assembly that is used in mounting the sensor to the frame.
1. Field of the Invention
This invention relates to a system for illuminating the interior of a refrigerated compartment. More specifically, the present invention relates to a sensor arrangement whereby the interior of a refrigerated compartment can be illuminated whenever the presence of an individual is detected.
2. Description of the Background Art
Refrigerated compartments are in wide use in supermarkets and convenience stores across the country. These compartments typically include a frame assembly mounted on the exterior of the compartment for pivotally mounting a series of doors. The doors give consumers access to the interior of the refrigerated compartment. Typically, glass doors are employed to give consumers the ability to see all of the items available for purchase. The use of lighting within the interior of the compartment is also known. This lighting can, for example, include fluorescent lighting mounted upon the ceiling of the refrigerated compartment.
However, because the compartment does not need to be continually lit, mechanisms have been devised over the years for selectively illuminating the interior of the compartment whenever one of the doors is opened. For example, a pressure switch can be employed on the door frame that is closed when the door is fully seated within the frame. This switch is opened when the door is opened to thereby illuminate the interior of the compartment. Unfortunately, this arrangement has many drawbacks. The first drawback is that a consumer can only view the compartment when the door is opened. This is not preferred because while the consumer is considering his or her choices, the refrigerated compartment is losing valuable cold air. The second drawback is that merely opening the door often results in a build up of condensation on the glass due to the temperature variation between the air inside and outside of the compartment. This is problematic because a consumer who opens the door to trigger the internal lighting for purposes of viewing the contents will create condensation and obscure the view of subsequent consumers.
Thus, there exists a need in the art for a refrigerated compartment with internal illumination wherein the illumination is activated in response to something other than the opening or closing of the compartment door.
SUMMARY OF THE INVENTIONIt is therefore one of the objectives of this invention to illuminate the contents of a refrigerated compartment without the need to open the compartment door.
It is another objective of this invention to more fully illuminate the contents of a refrigerated compartment by way of light emitting diodes.
It is a further objective of this invention to illuminate the contents of a refrigerated compartment in response to a sensor detecting movement in front of the compartment.
It is yet a further objective of this invention to mount a motion sensor upon the frame of a refrigerated compartment whereby the sensor can control the illumination within the compartment as well as the illumination of nearby compartments.
It is still yet another objective of this invention to quickly and easily mount a motion sensor upon the frame of a refrigerated compartment by way of an improved bracket construction.
The foregoing has outlined rather broadly the more pertinent and important features of the present invention in order that the detailed description of the invention that follows may be better understood so that the present contribution to the art can be more fully appreciated. Additional features of the invention will be described hereinafter which form the subject of the claims of the invention. It should be appreciated by those skilled in the art that the conception and the specific embodiment disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present invention. It should also be realized by those skilled in the art that such equivalent constructions do not depart from the spirit and scope of the invention as set forth in the appended claims.
For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings in which:
Similar reference characters refer to similar parts throughout the several views of the drawings.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTThe present invention is commercial refrigerator display that allows for the automatic illumination of the refrigerator contents in the presence of a consumer. Illumination is provided by a series of light emitting diodes (LEDs) which are positioned on an internal surface of one of the mullions that make up the compartment frame. These LEDs are interconnected to both a power source and one or more sensors. The sensors are preferably motion sensors that can detect the presence of an individual near the refrigerator housing. Thus, when an individual is detected, the sensor supplies power to the LEDs to thereby illuminate the interior of the refrigerated compartment. The present invention also relates to the bracket assembly that is used in mounting the sensor to the frame. The various details of the present invention, and the manner in which they interrelate, will be described in greater detail hereinafter.
With reference now to
Whatever embodiment is utilized, the frame assembly 26 is secured about the opening of the refrigerated compartment 22 and generally includes a top frame member 28, a bottom frame member 32 and opposed side frame members 34. Frame assembly 26 further includes a number of mullions 36 that extend vertically between the upper and lower frame members (28 and 32) and serve to both define individual door openings 38 and support the overall frame structure 26. The number of mullions utilized will depend upon how many doors are positioned within the frame. For instance, two mullions 36 are included in the three door embodiment of
The glass doors 24 that are used to enclose refrigerator compartment 22 can be of conventional construction. For instance, doors 24 can include two glass panes separated by an insulating barrier. Further insulation can be achieved by utilizing a rubber gasket about the periphery of the door. Doors 24 further include a handle 42 on their exterior face for use by consumers (note
With specific reference to
The specific manner in which an individual motion sensor 54 is mounted is illustrated in
Mounting two sensors 54 at the upper corners of a single frame assembly 26 is sufficient to detect movement anywhere in front of compartment 22.
The present disclosure includes that contained in the appended claims, as well as that of the foregoing description. Although this invention has been described in its preferred form with a certain degree of particularity, it is understood that the present disclosure of the preferred form has been made only by way of example and that numerous changes in the details of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention.
Now that the invention has been described,
Claims
1. A system for automatically illuminating the interior of a refrigerated compartment comprising:
- a frame positioned about an opening of the refrigerated compartment, the frame including a top frame member, a bottom frame member, and side frame members, a series of mullions extending between the top and bottom frame members and defining a plurality of door openings, each mullion having an internal surface facing the interior of the compartment;
- a plurality of glass doors, with the number of doors corresponding to the number of door openings, each door being pivotally secured to an associated door opening and providing selective access to the interior of the compartment;
- a series of light emitting diodes secured along the internal surface of at least one mullion, the light emitting diodes being interconnected to a power source, the light emitting diodes having illuminated and non-illuminated states;
- a pair of motion sensors for detecting the presence of an individual adjacent the compartment, each motion sensor including a mounting bracket for securing the sensor to the top frame member at approximately a 45° angle;
- a controller operatively coupled to both the motion sensors and the power source, the controller functioning to bring the light emitting diodes into the illuminated state when an individual is detected by the sensors and further functioning to bring the light emitting diodes into the non-illuminated state in the absence of an individual being detected by the sensors.
2. A system for automatically illuminating the interior of a refrigerated compartment comprising:
- a frame positioned about an opening of the refrigerated compartment;
- a glass door pivotally secured to the frame and providing access to the interior of the frame;
- a series of lights secured to the interior of the compartment, the lights being interconnected to a power source and having illuminated and non-illuminated states;
- a motion sensor for detecting the presence of an individual adjacent the compartment;
- a controller operatively coupled to both the motion sensor and the power source, the controller functioning to bring the lights into the illuminated state when an individual is detected by the sensors.
3. The system as described in claim 2 wherein the motion sensor is mounted to the top of the frame by way of a bracket.
4. The system as described in claim 3 wherein the bracket mounts the sensor facing downwardly at a 45 degree angle.
5. The system as described in claim 2 wherein the lights are light emitting diodes.
6. The system as described in claim 2 further comprising an adjacent refrigerated compartment and separate lighting within the adjacent refrigerated compartment and wherein the controller is operatively connected to and controls the lights of the adjacent refrigerated compartment.
7. The system as described in claim 2 wherein the lights are mounted to mullions secured to the frame.
Type: Application
Filed: Dec 21, 2007
Publication Date: Jun 25, 2009
Inventor: Mark A. Smith (Sarasota, FL)
Application Number: 11/962,234
International Classification: F25D 27/00 (20060101); A47F 3/04 (20060101); F25D 23/12 (20060101);