# US 9,752,739 B2 · Emergency lighting assembly having heat conducting member

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- Number: US 9,752,739 B2
- Document ID: US9752739B2
- Status: Granted
- Kind: B2
- Application number: 13/220,002
- Filed: 2011-08-29
- Published: 2013-02-28
- Granted: 2017-09-05
- Earliest claimed: 2011-08-29
- Assignees: Hubbell Incorporated
- Applicants: Steven Holscher; Han Lei
- Inventors: Steven Holscher; Han Lei
- Web page: https://patentgrep.com/patent/US9752739B2

## CPC

- H02J 7/02: for charging batteries from AC mains by converters
- F21S 9/022: {Emergency lighting devices}
- F21V 21/30: Pivoted housings or frames
- F21V 29/507: of means for protecting lighting devices from damage, e.g. housings
- F21V 29/74: with fins or blades
- H02J 7/04: Regulation of charging current or voltage
- H02J 7/50: acting upon multiple batteries simultaneously or sequentially
- H02J 7/92: with prioritisation of loads or sources
- H02J 7/933: {the cycle being controlled or terminated in response to electric parameters}
- H02J 7/94: in response to battery current
- H02J 9/061: {for DC powered loads}
- H03K 5/24: the characteristic being amplitude
- H05B 45/56: involving measures to prevent abnormal temperature of the LEDs
- F21Y 2115/10: Light-emitting diodes [LED]
- H02J 2207/20: Charging or discharging characterised by the power electronics converter
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- H03K: PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal oscillations with pulses H03C; transmission of digital information H04L; discriminator circuits detecting phase difference between two signals by counting or integrating cycles of oscillation H03D3/04; automatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses where the type of generator is irrelevant or unspecified H03L; coding, decoding or code conversion, in general H03M)
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- 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

## Abstract

An emergency lighting assembly is provided having a housing with one or more adjustable lamp assemblies for aiming the light at selected areas. The lamp assembly is mounted in the housing by a ball and socket arrangement. The lamp assembly has a substantially spherical shape with a front section made of a heat conducting material and a rear section made of a plastic material. The front section has an opening on a front side having a lens and a base spaced from the front side supporting the light source. The light source in one embodiment is an LED which is coupled to the front section to conduct heat from the LED away from the LED and the housing. The rear section has an opening in the rear side that receives a fixed stop member to limit pivoting movement of the lamp assembly with respect to the housing. The rear section also includes a projection oriented to contact the stop member to limit rotation of the lamp assembly with respect to the housing.

## Claims

### Claim 1

An emergency lighting assembly comprising:
a housing having an outer wall defining an inner cavity, and having at least one opening in said outer wall defining a socket;
an electrical power source contained within said housing; and
at least one substantially spherical lamp assembly connected to said power source and mounted in said opening in said housing for swiveling movement with respect to said housing, said lamp assembly having a rear section with a convex outer surface received in said opening in said housing, and a front section coupled to said rear section and facing outwardly from said opening in said housing, said front section having an LED light source coupled thereto and being made of a heat conducting material to dissipate heat from said LED light source away from said housing and said rear section having an opening in a rear side,
wherein said housing includes a stop member extending into said opening in said rear section to limit pivoting movement of said lamp assembly with respect to said housing.

### Claim 2 (depends on 1)

The emergency lighting assembly of claim 1, wherein
said opening in said housing has a dimension less than an outer dimension of said lamp assembly with a portion of said lamp assembly extending through said opening; and
further comprising a retaining member having a central opening with a dimension less than the outer dimension of said lamp assembly, said retaining member being coupled to said housing to capture said lamp assembly therebetween to allow swiveling movement of aid lamp assembly with respect to said housing.

### Claim 3 (depends on 2)

The emergency lighting assembly of claim 2, wherein
said stop member is coupled to said retaining member.

### Claim 4 (depends on 3)

The emergency lighting assembly of claim 3, wherein
said rear section has a projection oriented to contact said stop member to limit rotational movement of said lamp assembly about an axis extending through said opening in said housing.

### Claim 5 (depends on 1)

The emergency lighting assembly of claim 1, wherein
said front section of said lamp assembly has a base and an opening in a front side spaced from said base for directing light to a target area, and further comprising a lens received in said opening.

### Claim 6 (depends on 5)

The emergency lighting assembly of claim 5, further comprising
a lens retaining ring in said opening in said front section and where said lens is coupled to said lens retaining ring.

### Claim 7 (depends on 1)

The emergency lighting assembly of claim 1, wherein
said rear section includes at least one leg with a hook portion coupled to a base of said front section for coupling said rear section and front section together, and said base having a top surface supporting said LED and bottom face with a plurality of heat conducting fins.

### Claim 8

A lighting assembly comprising:
a housing having an opening therein; and
a lamp assembly adjustably mounted in said opening in said housing, said lamp assembly having a rear section mounted in said opening in said housing for movement in at least one direction, a front section coupled to said rear section to extend outwardly from said opening in said housing, said front section having a base, an LED light source on said base, and an opening spaced from said base for directing light to a target area, said front section being made from a first material having a first thermal conductivity and said rear section being made from a second material having a second thermal conductivity less than said first thermal conductivity.

### Claim 9 (depends on 8)

The lighting assembly of claim 8, wherein
said rear section is made of a plastic material and said front section is made of metal to conduct heat away from said housing and dissipate heat outside said housing.

### Claim 10 (depends on 9)

The lighting assembly of claim 9, wherein
said LED light source includes a printed circuit board that is coupled to said base by a fastener.

### Claim 11 (depends on 10)

The lighting assembly of claim 10, wherein
said rear section has at least one leg with a coupling portion for engaging said base for coupling said front and rear sections together.

### Claim 12 (depends on 11)

The lighting assembly of claim 11, wherein
said front section includes a wall between said base and said front section opening, said wall having an opening for receiving said coupling portion of said rear section.

### Claim 13 (depends on 9)

The lighting assembly of claim 9, wherein
said front section includes a lens received in said opening in said front section and being aligned with said LED light source.

### Claim 14 (depends on 13)

The lighting assembly of claim 13, further comprising
a lens retaining member in said opening in said front section and where said lens is coupled to said lens retaining member.

### Claim 15 (depends on 8)

The lighting assembly of claim 8, wherein
said housing includes a projection for engaging said lamp assembly for limiting swiveling movement of said lamp assembly in said housing.

### Claim 16 (depends on 15)

The lighting assembly of claim 15, wherein
said lamp assembly includes an opening and where said projection of said housing projects into said opening.

### Claim 17 (depends on 16)

The lighting assembly of claim 16, further comprising
a retaining member coupled to said housing, said retaining member having an opening with a dimension less than an outer dimension of said lamp assembly for capturing said lamp assembly between an inner edge of said opening in said housing and said retaining member, and where said projection is coupled to said retaining member.

### Claim 18 (depends on 17)

The lighting assembly of claim 17, wherein
said retaining member includes an arm overlying said lamp assembly, and said projection extending from said arm, and where said lamp assembly includes a stop member for contacting said arm to limit rotational movement of said lamp assembly with respect to said housing.

### Claim 19 (depends on 8)

The lighting assembly of claim 8, wherein
said lighting assembly is an emergency light and where said housing includes at least two of said lamp assemblies, each of said lamp assemblies being independently adjustable to direct light to a selected target area.

### Claim 20

An emergency lighting assembly comprising:
a housing enclosing an emergency power source, and having a first and second stop member and at least two openings in an outer wall, said opening defining a socket; and
a substantially spherical shaped lamp assembly mounted in each of said openings in said housing for swiveling movement within said respective opening,
each said lamp assembly having a front side and a rear side and enclosing a light source, said rear side of each respective lamp assembly having an opening, said first and second stop member extending into respective rear side openings to limit pivoting movement of said respective lamp assembly within said respective opening in said housing.

### Claim 21 (depends on 20)

The emergency lighting assembly of claim 20, wherein
said housing includes a retaining member coupled to an inner surface of said housing and having an opening with a dimension less than an outer diameter of said lamp assembly, said retaining member coupled to said housing to capture one of said lamp assemblies in the respective opening in the housing.

### Claim 22 (depends on 21)

The emergency lighting assembly of claim 21, wherein
said retaining member includes an arm, and where said stop member is coupled to said arm.

### Claim 23 (depends on 22)

The emergency lighting assembly of claim 22, wherein
said first stop member includes a projection extending from said arm.

### Claim 24 (depends on 20)

The emergency lighting assembly of claim 20, wherein
said lamp assemblies have a front section extending outwardly from said housing and a rear section in said housing, and said front section being made of a heat conducting material to dissipate heat from said light source outside said housing and said rear section being made of a plastic material.

### Claim 25 (depends on 24)

The emergency lighting assembly of claim 24, wherein
said housing is made of plastic.

### Claim 26 (depends on 25)

The emergency lighting assembly of claim 25, wherein
said light source is mounted to said front section of said lamp assembly.

### Claim 27 (depends on 26)

The emergency lighting assembly of claim 26, wherein
said light source is an LED.

### Claim 28 (depends on 27)

The emergency lighting assembly of claim 27, wherein
said front section of each of said lamp assemblies includes a heat conducting base and where said LED is mounted on said base.

### Claim 29 (depends on 28)

The emergency lighting assembly of claim 28, wherein
said heat conducting base includes a front surface supporting said LED and being connected to said front section by a side wall, and said heat conducting base having a rear surface with a plurality of fins extending into an inner cavity of said lamp assembly.

### Claim 30

An emergency lighting assembly comprising:
a housing having an outer wall defining an inner cavity, and having at least one opening in said outer wall defining a socket;
an electrical power source contained within said housing; and
at least one substantially spherical lamp assembly connected to said power source and mounted in said opening in said housing for swiveling movement with respect to said housing, said lamp assembly having a rear section with a convex outer surface received in said opening in said housing, and a front section coupled to said rear section and facing outwardly from said opening in said housing, said front section having an LED light source coupled thereto and being made of a heat conducting material to dissipate heat from said LED light source away from said housing,
wherein said rear section includes at least one leg with a hook portion coupled to a base of said front section for coupling said rear section and front section together, and said base having a top surface supporting said LED and bottom face with a plurality of heat conducting fins.