The disclosure relates generally to task lights and more particularly, optical towers providing discrete task lighting having a first configuration and a second configuration.
Task lights typically provide a light source or bulb that is partially or completely exposed to the work surface. Current designs result in task lights illuminating more than the task at hand and/or providing inadequate lighting for the task to be performed. What is needed are lights that more discretely light a target area, such as a task area, with adequate light while avoiding lighting areas outside the target area.
Disclosed are lights which provide discrete, yet powerful, lighting for a task or other uses where a focused light is desirable. The disclosed lights are suitable for uses where, for example, a task to be performed is in an otherwise darkened environment. For example, reading in bed, changing a baby's diaper during the night, and so on. Other uses include, for example, where focused light is desirable such as for displaying art work or sculptures.
The disclosure is directed to lighting devices. Suitable lighting devices comprise: a base; a light element positioned on an upper surface of the base wherein the light element emits light; a first hollow member having a first hollow member first end, a first hollow member second end and a cavity within the first hollow member wherein the first hollow member first end engages the upper surface of the base; a pair of biconvex lenses positioned within the cavity of the first hollow member; a reflector opposite the base wherein the reflector reflects light from the cavity of the first hollow member to a location exterior to the first hollow member; and a power source. Any suitable light source can be used including, for example, an LED light. In some configurations, the light source passes through an aperture in a base top and/or an aperture in the first hollow member. The cross-sectional shape of the lighting devices can be, for example, round, oval, ovoid, square, rectangular and triangular. The pair of biconvex lenses used in any configuration cab be positioned adjacent each other within the first hollow member. In some configurations, a third biconvex lens can also be provided. The third biconvex lens can be positioned adjacent the reflector positioned at the first hollow member second end. A cap can also be provided for housing the reflector. In some configurations, the reflector is rotatable. A second hollow member can also be provided in some configurations and a third hollow member, wherein the third hollow member is positionable about the second hollow member. A dimmer and/or timer can also be provided which changes the amount of light or the time a light is on. A base extension can also be provided which extends the overall height of the lighting device. The power source can be any suitable source including, for example, an electrical cord with an electrical plug, one or more batteries, and one or more solar cells.
Another aspect of the disclosure is directed to a method of illuminating a target. Suitable methods comprise: providing a lighting device wherein the lighting device comprises a base, a light element positioned on an upper surface of the base wherein the light element emits light, a first hollow member having a first hollow member first end, a first hollow member second end and a cavity within the first hollow member wherein the first hollow member first end engages the upper surface of the base, a pair of biconvex lenses positioned within a cavity of the first hollow member, a reflector opposite the base wherein the reflector reflects light from the cavity of the first hollow member to a location exterior to the first hollow member, and a power source; and providing a discrete light to a target location. Additionally, methods can include one or more of:changing the lighting device from a compressed configuration to an expanded configuration, adjusting an amount of expansion of the lighting device to change an amount of light focused on the target location; activating a dimmer to alter an amount of light generated by the lighting device; and/or securing the lighting device to a base extension. A timer can also be included to control the amount of time the lighting device illuminates.
Still another aspect of the disclosure is directed to lighting devices comprising: a base; a light element means positioned on an upper surface of the base wherein the light element means emits light; a first hollow member means having a first hollow member first end, a first hollow member second end and a cavity within the first hollow member means wherein the first hollow member first end engages the upper surface of the base; a pair of biconvex lenses positioned within the cavity of the first hollow member means; a reflector means opposite the base wherein the reflector reflects to light from the cavity of the first hollow member to a location exterior to the first hollow member; and a power source. The cross-sectional shape of the lighting device can be round, oval, ovoid, square, rectangular and triangular. The pair of biconvex lenses are positionable adjacent each other within the first hollow member means in some configurations. A third biconvex lens can also be provided. The third biconvex lens can be positioned adjacent the reflector means positioned at the first hollow member second end. A second hollow member means and a third hollow member means positionable about the second hollow member means.
All publications, patents, and patent applications mentioned in this specification are herein incorporated by reference to the same extent as if each individual publication, patent, or patent application was specifically and individually indicated to be incorporated by reference. See, for example,
CN 101660667 A published Mar. 3, 2010 to Zhou et al. for Portable Spotlighting-Floodlighting Lamp;
GB 726353 A published Mar. 16, 1955 to Ritter Company, Inc. for Improvements in or relating to Spotlights Particularly for Dental Use;
U.S. Pat. No. 7,261,438-B2 issued Aug. 28, 2007 to Alessio for Lighting Device with Adjustable Spotlight Beam;
U.S. Pat. No. 7,798,667 B2 issued Sep. 21, 2010 to Klipstein for LED Spotlight;
U.S. Pat. No. 7,810,967 B2 issued Oct. 12, 2010 to Ko et al. for Adjustable Grill Light and Methods of Use Thereof;
U.S. Pat. No. 7,823,783 B2 issued Nov. 2, 2010, to Gerst et al. for Light Pipe illumination system and method;
U.S. Pat. No. 7,871,192 B2 issued Jan. 18, 2011 to Chien for LED Night Light has Projection or Image Feature;
U.S. Pat. No. 8,083,376 B2 issued Dec. 27, 2011 to Chien for LED Power Failure Light;
U.S. Pat. No. 9,170,006 B2 issued Oct. 27, 2015 to Cugini et al. for Light Figure Reconfigurable between Area Lighting and Spot Lighting Configurations;
US 2005/0087601 A1 published Apr. 28, 2005, to Gerst et al. for Light Pipe illumination system and method;
US 2008/0198615 A1 published Aug. 21, 2008 to Klipstein for LED Spotlight;
US 2009/0122563 A1 published May 14, 2009 to Ko et al. for Adjustable Grill Light and Methods of Use Thereof;
US 2009/0135380 A1 published May 28, 2009 to Chien for LED Night Light has Projection or Image Feature;
US 2010/0213849 A1 published Aug. 26, 2011 to Chien for LED Power Failure Light;
US 2011/0063835 A1 published Mar. 17, 2011, to Rivas et al. for LED Lighting Apparatus;
US 2012/0300438 A1 published Nov. 29, 2012 to Tarter et al. for Folding Spotlight;
US 2013/0128565 A1 published May 23, 2013 to Cugini et al. for Light Figure Reconfigurable between Area Lighting and Spot Lighting Configurations; and
WO 2004/001287 A1 published Dec. 31, 2003 to Alessio for Lighting Device with Adjustable Spotlight Beam.
The novel features of the invention are set forth with particularity in the appended claims. A better understanding of the features and advantages of the present invention will be obtained by reference to the following detailed description that sets forth illustrative embodiments, in which the principles of the invention are utilized, and the accompanying drawings of which:
Two or more apertures 113 can be provided on the upper surface 115 of the base 110 which engage the outer hollow member 170. A locking element 172, such as a hook, can be provided on the first outer hollow member end 171 and sized to fit within one of the two or more apertures 113 on the upper surface 115 of the base 110.
An optical lens housing member 130, which is a first optical lens housing member, can be provided which has two pieces and which is sized to fit within the outer hollow member 170. The optical lens housing member 130 has a lower surface 133 and an optical lens housing member aperture 135. When the two halves of the optical lens housing member 130 are positioned together, an optical lens housing member aperture 135 in the bottom surface allows the illuminating element 124 to pass through the optical lens housing member 130 when the optical lens housing member 130 sides are connected with, for example, hardware 134.
The outer hollow member 170 has a first outer hollow member end 171 and a second outer hollow member end 171′. The outer hollow member 170 can have a locking element 172 which secures the outer hollow member 170 to the base 110 via the apertures 113 on the base, as noted above.
One or more optical lenses 140, 141 engage a ledge 137 within the interior of the optical lens housing member 130. The one or more optical lenses 140, 141 can be positioned adjacent each other, as illustrated, or separated and can engage a single ledge or be positioned on separate ledges within the interior of the optical lens housing member. The one or more optical lenses 140, 141 can be positioned from about 4.25 inches to about 4.75 inches from an upper surface of the illuminating element 124. The one or more optical lenses 140, 141 fit within the optical lens housing member 130. A ring can be used to secure the lenses within the interior of the respective tubular members.
A second hollow member 150 is provided. A biconvex lens 144 is retained in place by a retainer 146. The second hollow member 150 is shown with the threads 157 near the second hollow member first end 151 and threads 152 near the second hollow member second end 151′.
A third hollow member 154, such as a threaded plastic tube, has threads 156 on an exterior surface. A mirror retaining ring is provided which retains a reflecting element 148, such as a mirrored glass. A retaining ring 160 is provided to secure the reflecting element 148 within a reflective enclosure 162. The reflective enclosure 162 has a plurality of hinge elements 164 which can pivotally engage the third hollow member 154 by the use of a securement member 166, such as a screw.
The optical lens housing member 130 can have two pieces that fit together, as illustrated. One or more optical lenses 140, 141 are positioned on a ledge 137 or secured by a lens carrier within the interior of the optical lens housing member 130. The one or more optical lenses 140, 141 can be positioned adjacent each other, as illustrated, or separated. More than one ledge can be provided, if desired.
The reflective enclosure 162 can be a cap which includes a plurality of flexure tabs to hold the reflecting element 148. The reflective enclosure 162 can have a top surface and a side surface (for a round or oval configuration) or surfaces (for square, rectangular or triangular configurations). Within a recess of the cap, flexture tabs can be provided to secure the reflecting element 148. When the flexure tabs are pulled outward the reflecting element can be positioned within the cap and when the flexure tabs are released the reflecting element 148 is secured within the cap. The reflective enclosure 162 can have a width greater than the width of the reflecting element 148 with a gap between the flexture tabs holding the reflecting element 148 and the exterior of the reflective enclosure 162.
146A second hollow member 150 is provided. A biconvex lens 144 is positioned within an upper opening 158 of the second hollow member 150. The biconvex lens 144 is retained in place by a retainer 146. The retainer 146 can have a top surface with an aperture and a side surface (for a round or oval configuration) or surfaces (for square, rectangular or triangular configurations). Within a recess of the retainer 146, flexture tabs can be provided to secure the biconvex lens 144. When the flexure tabs are pulled outward the lens can be positioned within the retainer and when the flexure tabs are released the lens is secured within the retainer. The retainer 146 can have a width greater than the width of the biconvex lens 144 with a gap between the flexture tabs holding the biconvex lens 144 and the exterior of the retainer 146.
A third hollow member 154, such as a plastic tube. A reflective enclosure 162 is provided. Additionally, a flexible bearing member 190 is provided which fits around the second hollow member 150. The flexible bearing member 190 is hollow and has a plurality of elongated members which are positioned adjacent one another to create, for example, a flexibly shaped tubular member, as illustrated. The flexible bearing member 190 can have an elongated gap 191 along a length forming a complete gap along a length. The flexible bearing member 190 can further be formed from a plurality of connected elongated members 192 where a first elongated member is connected to an adjacent second elongated member at a first end and the second elongated member is connected to an adjacent third elongated member at a second end, different than the first end, with the “W” pattern repeated for the length of the flexible bearing member about the cross-sectional shape. A semicircular cut-out can be positioned within the bottom of the trough of each “W” as illustrated. The flexible bearing member 190 can be laser stamped from a polyethylene (PE) or low-density polyethylene (LDPE). The flexible bearing member 190 is configured to have a stiff section at a first end and a flexible section at a second end opposite the stiff section. The middle section of the flexible bearing member 190 can be made of thin sections that conform well to the interior of the second hollow member 150.
As will be appreciated by those skilled in the art, the lighting fixtures shown in
Additionally, configurations can change which member fits within another member without departing from the scope of the disclosure. As will be appreciated by those skilled in the art, additional changes can be made based on the intended application of the light fixture in use, e.g., freestanding, tabletop, floor, and wall or surface mounted. The light fixtures are collapsible (manually or mechanically activated) or may have a fixed length. Other mechanisms for extension and retraction can be used, including, for example, spring-loaded mechanisms, electronically controlled mechanisms, pneumatic mechanism, and hydraulic mechanisms. Converting the fixture from a compressed configuration to an extended configuration can be achieved by the use of threaded tubular members and/or nested tubular members with sliding and locking mechanisms. The various hollow members can be retracted and/or extended by use of threaded tubes, nested tubes with sliding and locking mechanisms, and the like. The lenses can be enclosed or open. Enclosed lenses would reduce the overall amount of light in the room (which achieves the focused task lighting illustrated in
The lenses fit within the lower inner tubular member and within the middle threaded tubular member. A ring can be used to secure the lenses within the interior of the respective tubular members.
Table 1 provides exemplar dimensions for select parts for the disclosed lighting devices. As will be appreciated by those skilled in the art, other size ranges can be used without departing from the scope of the disclosure.
The lighting fixture 100 and components can be made from a variety of materials including, but not limited to: metal, plastic, glass, carbon fiber, paper, cardboard or fabric.
Table 2 provides exemplar dimensions between select parts for the disclosed lighting devices when the lighting device is in an expanded configuration. As will be appreciated by those skilled in the art, other size ranges can be used without departing from the scope of the disclosure.
As will be appreciated by those skilled in the art, the environment illustrated in
While preferred embodiments of the present invention have been shown and described herein, it will be obvious to those skilled in the art that such embodiments are provided by way of example only. Numerous variations, changes, and substitutions will now occur to those skilled in the art without departing from the invention. It should be understood that various alternatives to the embodiments of the invention described herein may be employed in practicing the invention. It is intended that the following claims define the scope of the invention and that methods and structures within the scope of these claims and their equivalents be covered thereby.
This application claims the benefit of U.S. Provisional Application No. 62/611,208, filed Dec. 28, 2017, entitled RETRACTABLE TASK LIGHTING DEVICES AND METHODS, which application is incorporated herein in its entirety by reference.
Number | Date | Country | |
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62611208 | Dec 2017 | US |