# US 7,740,381 B2 · Sports lighting fixture having die-cast frame in high-reflectance material

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- Number: US 7,740,381 B2
- Document ID: US7740381B2
- Status: Granted
- Kind: B2
- Application number: 11/333,139
- Filed: 2006-01-17
- Published: 2006-08-24
- Granted: 2010-06-22
- Earliest claimed: 2005-01-18
- Assignees: Musco Corporation
- Inventors: Myron K. Gordin; Timothy J. Boyle
- Web page: https://patentgrep.com/patent/US7740381B2

## CPC

- F21V 7/10: Construction
- F21S 8/08: with a standard {(F21S6/00 takes precedence)}
- F21W 2131/10: Outdoor lighting
- F21W 2131/105: of arenas or the like
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS

## Abstract

An apparatus and method for a high intensity lighting fixture. In one aspect, instead of a spun aluminum bowl-shaped reflector, a die cast metal reflector frame, somewhat simulating a bowl shape, includes an inner surface with mounting structure. A high reflectance sheet or plurality of high reflectance inserts are placed onto the mounting structure to create a reflecting surface. This allows high customability of the reflecting surface and minimizes light loss.

## Claims

### Claim 1

A reflector for a high intensity lighting fixture comprising:
a. a reflector frame comprising a generally bowl-shaped outer surface, an inner surface including integral mounting structure raised from and at predetermined positions on the inner surface and adapted for removably receiving a reflecting surface, and a primary opening over which a glass lens is mountable;
b. a very high total reflectance reflecting surface mountable to the mounting structure of the reflector frame by complementary mounting structure to the mounting structure of the reflector frame;
c. wherein, the inner surface having a non-symmetrical shape comprising a first portion following a first surface of revolution and a second portion following a second surface of revolution.

### Claim 2 (depends on 1)

The fixture of claim 1 wherein the frame is cast to include the mounting structures for the reflecting surface.

### Claim 3 (depends on 2)

The fixture of claim 2 wherein the mounting structures comprise bosses adapted to hold the reflecting surface in position.

### Claim 4 (depends on 3)

The fixture of claim 3 wherein the reflecting surface includes complementary openings adapted for placement on the bosses.

### Claim 5 (depends on 4)

The fixture of claim 4 wherein the complementary openings are slots.

### Claim 6 (depends on 5)

The fixture of claim 5 wherein the slots include a shape adapted to snap onto the bosses.

### Claim 7 (depends on 1)

The fixture of claim 1 wherein the reflecting surface comprises a plurality of pieces.

### Claim 8 (depends on 7)

The fixture of claim 7 wherein the plurality of pieces comprise strips.

### Claim 9 (depends on 8)

The fixture of claim 8 wherein the strips can be of same or different size, shape, and reflecting properties.

### Claim 10

A reflector frame for a high intensity lighting fixture comprising:
a. a body having inner and outer surfaces;
b. the inner surface including integrally formed mounting structure raised from and at predetermined positions on the inner surface adapted for removable mounting of a reflecting surface;
c. wherein the inner surface is non-symmetrical.

### Claim 11 (depends on 10)

The reflector frame of claim 10 wherein the reflecting surface is high total reflectance material.

### Claim 12 (depends on 10)

The reflector frame of claim 10 wherein the reflecting surface comprises multiple strips removably mountable to the mounting structure.