GAZING GLOBES AND OTHER DECORATIVE OBJECTS INCLUDING LIGHT SOURCES AND LIGHT-ACTIVATED MATERIALS

Abstract

A self-contained, glow-in-the-dark decorative article according to the invention comprises a transparent or translucent air-filled, hollow object having a lower rim defining an opening into the interior of the object, with light-activated material deposited on, or embedded in, the object. A base unit on a stake includes a receptacle to receive the rim of the object. The base unit includes a light emitter supported to illuminate the object from the inside out. The base unit further includes one or more solar panels facing into the interior of the object and one or more batteries charged by the solar panels to power the light emitter. The transparent or translucent object may be made of glass, and may be a sphere, a flattened sphere, or a teardrop shape. The source of light may be a light-emitting diode (LED), preferably a violet or ultraviolet LED.

Description

FIELD OF THE INVENTION

This invention relates generally to decorative objects and, in particular, gazing globes and other ornamental objects including light sources and light-activated materials.

BACKGROUND OF THE INVENTION

U.S. Pat. No. 7,252,889 describes a method of fabricating glow-in-the-dark gazing globes or other objects, as well as the articles that result. The method comprises the steps of providing a hollow form having an inner wall made from a transparent or translucent material, the form including an aperture for gaining access to the interior thereof, and introducing one more photoluminescent pigments into the form through the aperture so that they cling to the inner wall. In alternative embodiments, the pigments may be applied without an adhesive, as by naturally cling, vacuum evaporation, or other techniques. If the object is a gazing globe, a supporting stand may be included. A plurality of different pigments may be introduced into the form to create a decorative or swirling effect. One drawback with the approach just described is that after a few hours following sundown, the light-emitting capabilities of these materials falls off, resulting in a product which no longer glows as nighttime continues.

SUMMARY OF THE INVENTION

This invention improves upon the existing art by providing a light source to extend the operating period of light-activated materials in gazing globes and other decorative or ornamental objects. In the preferred embodiment, a photoluminescent material, which may be phosphorescent or fluorescent, is included on or in the object. A light source of an appropriate wavelength causes the material(s) to glow for a longer period of time after the sun has gone down. Also in the preferred embodiment, a solar cell is used to charge a battery during the day, allowing for a completely self-contained system. A photocell may be provided to turn the light source on and off, thereby limiting illumination to dark periods, conserving battery power.

A self-contained, glow-in-the-dark decorative article according to the invention comprises a transparent or translucent air-filled, hollow object having a lower rim defining an opening into the interior of the object, with light-activated material deposited on, or embedded in, the object. A base unit on a stake includes a receptacle to receive the rim of the object. The base unit includes a light emitter supported to illuminate the object from the inside out. The base unit further includes one or more solar panels facing into the interior of the object and one or more batteries charged by the solar panels to power the light emitter.

The transparent or translucent object may be made of glass, and may be a sphere, a flattened sphere, or a teardrop shape. The source of light may be a light-emitting diode (LED), preferably a violet or ultraviolet light-emitting diode (LED) to stimulate the light-activated photoluminescent, fluorescent or phosphorescent particles of material. The assembly may further include a light detector operative to switch power to the source of light when a sufficient level of darkness is detected.

BRIEF DESCRIPTION OF THE DRAWING

FIG. 1 is a drawing which shows the invention applied to a gazing globe;

FIG. 2 is a drawing which shows how the solar panel and battery may be integrated into a stand;

FIG. 3 is a drawing which shows how power may be supplied from a more distant source;

FIG. 4A is a side-view drawing that shows a self-contained embodiment of the invention comprising a teardrop-shaped, glow-in-the-dark (GID) object;

FIG. 4B is a top-view drawing that shows a self-contained embodiment of the invention comprising the teardrop-shaped object;

FIG. 5 is a partially exploded view of the article of FIGS. 4A, 4B;

FIG. 6 is a fully exploded view; and

FIG. 7 is a series of cross sections of the teardrop shaped GID object.

DETAILED DESCRIPTION OF THE INVENTION

FIG. 1 is a drawing which shows the invention applied to a gazing globe with the understanding that the principles and methods described herein are equally applicable to other indoor/outdoor decorative fixtures, which will be apparent to those of skill in the art.

The device includes a globe 102 which may be solid or hollow, including particles 106 which receive light 130 from one or more sources 110, and emit light 132 after the light source has been removed. Such glow-in-the-dark substances may be photoluminescent, phosphorescent, fluorescent, etc. These substances may either be embedded with the sphere 102, or applied to the interior or exterior surfaces thereof, by whatever appropriate means are available. In the event that the globe 102 or other ornamental object is glass, the particles 106 may be included into the melt prior to solidification, or adhered to the inside of the globe (or outside of the globe) through appropriate adhesives. Suitable plastics, including polycarbonates, may be used as an alternative to glass. The globe 102 or other object is preferably supported on a stand 104. The light-activated materials may be applied to create a ‘swirling effect’ when activated

The light source 110 is used to provide wavelengths to activate the particles 106, typically after sunset. While the light source 110 may be used externally to the globe 102, in the preferred embodiment, it is held upright by a post 112 central to the inside of a hollow object, allowing for a relatively uniform illumination of the particles 106 while, at the same time, providing for a relatively discrete placement of the source 110. Although different wavelengths may be used, emitter 110 is preferably a violet or ultraviolet light-emitting diode (LED), which are now commercially available with quite high brightness levels. Utilizing common photo-active materials, light in this wavelength range causes the particles 106 to glow quite brightly, and assuming sufficient illumination during the day, this may achieve a glow-in-the-dark effect all night long in some cases. Although a single emitter 110 is shown, clearly multiple emitters may be used, including emitters closer to the particles 106

In the preferred embodiment, the source 110 is powered by an integrated module 202 built into the stand, as shown in FIG. 2. The module contains the solar panel, battery and necessary electronics. Preferably, a light sensor is used switching power from the batteries to the source 110 after a sufficient level of darkness has been achieved. This photocell may be located anywhere on the stand. In an alternative embodiment, a module 122 may provide power wires 114, allowing solar panel 120 to be located remotely from the ornamental object. In this case, a light sensor 124 may be mounted on the module. As a further alternative, power may be supplied from a more remote source through wires 302 shown in FIG. 3, allowing for ON/OFF operation from a house, for example, without the need for a solar panel.

FIG. 4A is a side-view drawing that shows a self-contained embodiment of the invention comprising a teardrop-shaped, glow-in-the-dark (GID) object situated on an stake 400 with may include an earth-piercing point 401. FIG. 4B is a top-down view. “Self-contained” is this case means that the solar panel is located with its collection surface facing into the hollow interior of the object, as explained in further detail below.

In the embodiment of FIG. 4A, the GID particles 402 are adhered to the inner wall 404 of the hollow object 406 to create a pattern that spirals or swirls around the object from at least near the top to at least near the bottom. Differently shaped objects such a spheres 407409 and ‘flattened’ spheres depicted with broken lines in FIG. 5. To create this GID pattern, glue is applied is the spiral pattern to the inner wall 404 with a long brush through the bottom opening of the form at 410 prior to installation on base 412. While the adhesive is still tacky, the object is filled with the GID particles and shaken in some cases so that they cling to the inner wall and become affixed thereto. The excess particles may be reclaimed for subsequent use.

FIG. 5 is a partially exploded view of the article of FIGS. 4A, 4B. As can be seen, base 412 includes one or more solar panels 502, 504 used to recharge one or more batteries 506, 508 to power LED 510. In the preferred embodiment, LED is a violet or ultraviolet LED to enhance the activation of the GID particles. The LED may be supported on a post 412 to bring the emitted closed to the center of the object. The various components are interconnected to control electronics 520, which may further be interconnected to optional photocell 522. A switch (not shown) may also be provided to turn the device ON and OFF.

FIG. 6 is a fully exploded view perhaps better illustrating the various component parts. While different assembly techniques may be used, the lower rim of the object 406 press fits into the base 412 using an elastomeric ring 602 providing a leak-free fit. This also allows the object 406 to be pulled out of the base maintenance, if necessary.

FIG. 7 is a series of cross sections of a teardrop-shaped GID object 406 made in accordance with the invention. Cross sections A-A through E-E, all generally circular, are taken at different horizontal slices through object 405. The horizontal centerline is generally shown at 702. Above this line, cross sections gradually progress from C-C to B-B to A-A in monotonically decreasing sizes. Below the line 702, however, the diameter first assumes a maximum diameter at D-D before reducing at E-E before transitioning into base, thereby resulting in a teardrop or “Hershey's kiss” type configuration.

Claims

1. A self-contained, glow-in-the-dark decorative article, comprising: a transparent or translucent air-filled, hollow object having a lower rim defining an opening into the interior of the object;light-activated particles deposited on, or embedded in, the object;a base unit on a stake including a receptacle to receive the rim of the object;the base unit including a light emitter supported to illuminate the object from the inside out; andthe base unit further including one or more solar panels facing into the interior of the object and one or more batteries charged by the solar panels to power the light emitter.

2. The decorative article of claim 1, wherein the transparent or translucent object is made of glass.

3. The decorative article of claim 1, wherein the transparent or translucent object is spherical.

4. The decorative article of claim 1, wherein the transparent or translucent object is a flattened sphere.

5. The decorative article of claim 1, wherein the transparent or translucent object is a teardrop shape.

6. The decorative article of claim 1, wherein the light-activated particles are applied in a top-to-bottom spiral swirling pattern.

7. The decorative article of claim 1, wherein the source of light is a light-emitting diode (LED).

8. The decorative article of claim 1, wherein the source of light is a violet or ultraviolet light-emitting diode (LED).

9. The decorative article of claim 1, wherein the light-activated material is photoluminescent, fluorescent or phosphorescent.

10. The decorative article of claim 1, further including a light detector operative to switch power to the source of light when a sufficient level of darkness is detected.