# US 9,435,491 B2 · LED lead frame and lamp thereof

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- Number: US 9,435,491 B2
- Document ID: US9435491B2
- Status: Granted
- Kind: B2
- Application number: 14/108,582
- Filed: 2013-12-17
- Published: 2015-04-30
- Granted: 2016-09-06
- Earliest claimed: 2013-10-25
- Assignees: Unity Opto Technology Co., Ltd.
- Applicants: Unity Opto Technology Co., Ltd.
- Inventors: Wei Chang; Chih-Hsien Wu; Huan-Ying Lu; Shih-Chao Shen; Sen-Yuh Tsai
- Web page: https://patentgrep.com/patent/US9435491B2

## CPC

- F21K 9/23: Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
- F21V 19/004: {by deformation of parts or snap action mountings, e.g. using clips}
- F21V 21/00: Supporting, suspending, or attaching arrangements for lighting devices (F21V17/00, F21V19/00 take precedence; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q, stands for supporting apparatus or articles in general F16M11/00); Hand grips
- 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

## Abstract

An LED lead frame mounted on a platform of a lightbulb includes a metal polarity substrate, a metal retaining substrate and a casing for partially covering the metal polarity substrate and the metal retaining substrate. The metal retaining substrate is a sheet bent into a disposing portion and a carrying portion, and an included angle θ1 is defined between the portions, and an abutting surface of the disposing portion abuts the platform, and a portion of the carrying portion not covered by the casing is provided for installing at least one LED chip. The metal polarity substrate is bent to form an included angle θ2, and θ1=θ2, and 93°≦θ1≦130°. The casing has a support member formed on the casing and protruded in a direction opposite to the direction of bending the metal retaining substrate. The LED lead frame enhances the illumination angle and light uniformity of the lightbulb.

## Claims

### Claim 1

A light emitting diode (LED) lead frame, mounted onto a platform inside a lightbulb, and comprising a metal polarity substrate, a metal retaining substrate and a casing for partially covering the metal polarity substrate and the metal retaining substrate, characterized in that the metal retaining substrate is a sheet bent into a disposing portion and a carrying portion, and an abutting surface of the disposing portion abuts the platform, and a portion of the carrying portion not covered by the casing is provided for installing at least one LED chip, and an included angle θ1 is defined between the disposing portion and the carrying portion, and the metal polarity substrate is bent to form an included angle θ2, and θ1=θ2, and 93°≦θ1=130°; and the casing has a support member formed on the casing and protruded in a direction opposite to the direction of bending the metal retaining substrate, wherein the support member is a wedge shaped member, the casing further includes a weight member formed on the casing and disposed at a position opposite to the support member,
wherein the casing includes a sucking member formed on the casing and disposed at a position opposite to the other end of the disposing portion, and the sucking member is a wedge shaped member protruding in a direction toward a center of the platform and has a sucking surface parallel to the abutting surface.

### Claim 2

A light emitting diode (LED) bulb, comprising a lamp holder and an electric socket, and the lamp holder having a platform installed therein, and a straight line passing through a center position of the platform and a tip position of the lamp holder being defined as the Z-axis, and the center being defined as the origin, and a direction facing the tip being defined as the positive direction of the Z-axis, comprising:
at least three lateral light emission lead frames, disposed around the periphery of the platform, and having a metal polarity substrate, a metal retaining substrate and a casing for partially covering the metal polarity substrate and the metal retaining substrate, wherein the metal retaining substrate is a sheet bent into a disposing portion and a carrying portion, and the disposing portion abuts the platform, and a portion of the carrying portion not covered by the casing is provided for installing at least one LED chip, and an included angle θ1 is defined between the disposing portion and the carrying portion, and the metal polarity substrate is bent to form an included angle θ2, and θ1=θ2, and 93°≦θ1≦130°; and the casing has a support member formed on the casing and protruded in a direction opposite to the direction of bending the metal retaining substrate; and
at least one forward light emitting lead frame, mounted onto the platform, and having a light emitting area, and an exit light direction of the light emitting area faces the positive direction of the Z-axis,
wherein the support member is a wedge shaped member, the casing further includes a weight member disposed at a position opposite to the support member,
wherein the casing includes a sucking member formed on the casing and disposed at a position opposite to the other end of the disposing portion, and the sucking member is a wedge shaped member protruding in a direction toward a center of the platform and has a sucking surface, such that after the disposing portion abuts the platform, the sucking surface is parallel to the platform.