# US 10,371,330 B2 · LED projection night light

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- Number: US 10,371,330 B2
- Document ID: US10371330B2
- Status: Granted
- Kind: B2
- Application number: 14/275,184
- Filed: 2014-05-12
- Published: 2015-03-12
- Granted: 2019-08-06
- Earliest claimed: 2008-12-30
- Applicants: Tseng-Lu Chien
- Inventors: Tseng-Lu Chien
- Web page: https://patentgrep.com/patent/US10371330B2

## CPC

- F21S 8/035: {by means of plugging into a wall outlet, e.g. night light}
- F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
- F21S 4/28: rigid, e.g. LED bars
- F21S 9/02: the power supply being a battery or accumulator
- F21S 10/002: {using liquids, e.g. water}
- F21S 10/007: {using rotating transparent or colored disks, e.g. gobo wheels}
- F21V 5/04: of lens shape
- F21V 13/02: Combinations of only two kinds of elements
- F21V 14/003: {by interposition of elements with electrically controlled variable light transmissivity, e.g. liquid crystal elements or electrochromic devices}
- F21V 14/006: {by means of optical elements, e.g. films, filters or screens, being rolled up around a roller}
- F21V 14/08: by movement of the screens {or filters}
- F21V 17/02: with provision for adjustment (F21V17/04 - F21V17/08 take precedence)
- F21V 21/08: Devices for easy attachment to any desired place, e.g. clip, clamp, magnet
- F21V 21/14: Adjustable mountings
- F21V 21/22: telescopic
- F21V 23/00: Arrangement of electric circuit elements in or on lighting devices {(characterised by cooling arrangements F21V29/508)}
- F21V 23/04: the elements being switches (safety devices F21V25/00)
- F21V 29/00: Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems (lighting fixtures combined with outlets for air-treatment systems F24F13/078)
- F21V 21/29: employing universal joints
- F21V 21/30: Pivoted housings or frames
- F21V 23/0442: {activated by means of a sensor, e.g. motion or photodetectors}
- F21V 23/0471: {the sensor detecting the proximity, the presence or the movement of an object or a person}
- F21W 2121/00: Use or application of lighting devices or systems for decorative purposes, not provided for in codes F21W2102/00 – F21W2107/00
- F21Y 2115/10: Light-emitting diodes [LED]
- G03B 21/142: {Adjusting of projection optics}
- Y10S 362/80: Light emitting diode
- Y10S 362/806: Ornamental or decorative
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21Y: INDEXING 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
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

An LED projection night light for night time or dark area use includes a plug-in wall outlet night light or direct current operated night light with projection features to project an image, message, data, logo, or time on a ceiling, walls, floor, or other desired surface. The LED night light incorporates optics means such as an optics-lens, slides, openings, or cut-outs, and/or a transparent material piece, translucent material piece, telescope assembly, housing-member, slide-film, slide-disc, elastic-member, tilt-means, rotating-means, adjust-means, roller-means, mechanical-means, extend-means, convex lens, and/or concave lens designed to make the desired image, message, data, logo, or time project to the ceiling, walls, floor, or other desired surface to be seen by a viewer. The LED light has an interchangeable power source arrangement, permitting the night light to be selectively powered by either an AC powered sealed-unit or a DC powered battery-pack.

## Claims

### Claim 1

An LED projection light, comprising:
at least one LED arranged to emit visible light beams; and
at least one power source connected to circuitry to cause said at least one LED to exhibit at least one of a desired light function, timing, color, and brightness,
wherein:
said LED projection light is a plug-in AC powered light having at least one conductive kit to be connected to an electrical outlet,
said LED projection light includes at least one optical lens installed on a top of a housing or on a top of at least one tube incorporated with the LED for projecting said light through one or more than one of a plurality of different image forming elements to cause a desired image, message, data, logo, or time to project onto a ceiling, walls, floor, or other desired surface, and
said image forming elements being mounted in a holding member or disc incorporated with a tube-assembly or the housing and including at least one of slides and films, and
further comprising a changing mechanism for enabling a user to change one of said plurality of image forming elements to a different one of said plurality of image forming elements, by moving the holding member from a first position in which said one of a plurality of image forming elements is in front of said at least one LED to a second position in which said different one of said image forming elements is in front of said at least one LED to change said image, message, data, logo or time.

### Claim 2 (depends on 1)

An LED projection light as claimed in claim 1, further comprising at least one of the following elements: (a) a telescope assembly, (b) a tilt assembly for tilting said optical lens, (c) a rotating assembly for rotating said optical lens and image forming elements, (d) an adjust assembly for adjusting said optical lens, (e) a roller assembly to move the optical lens or image forming elements, and (f) an elastic member to change a projection direction of said light.

### Claim 3 (depends on 1)

An LED projection light as claimed in claim 1, wherein said changing mechanism includes at least one of a roller, an elastic member, a push button, and a movement-device.

### Claim 4 (depends on 1)

An LED projection light as claimed in claim 1, wherein a projection direction and/or image is changed by at least one of a rotating-assembly, a tilt-assembly, a swivel-assembly, a housing-assembly, and a bend-assembly.

### Claim 5 (depends on 1)

An LED projection light as claimed in claim 1, further comprising an extend assembly that changes a relative position of said holding member, said at least one LED, and/or said optical lens to adjust a focus of said image.