Light source unit with light emitting module, sealing part and lens part

Patent metadata

Field	Value
Publication number	US-10018324-B2
Application number	US-201615084647-A
Country	US
Kind code	B2
Filing date	Mar 30, 2016
Priority date	Mar 31, 2015
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

A light source unit of one embodiment includes a socket housing, a light emitting module, a substrate, a sealing part, and a lens part. The sealing part seals the light emitting element and the conductive part to the substrate. A lens part is formed on the sealing part. Alastic modulus of the lens part is higher than that of the sealing part.

First claim

The invention claimed is:

1. A light source unit comprising:
a socket housing which has an engaging portion to be engaged with a predetermined member;
a light emitting module which is disposed in the socket housing and has a light emitting element serving as a light source, a substrate formed with a wiring pattern for supplying current to at least the light emitting element and a conductive part for connecting the light emitting element to the wiring pattern;
a sealing part for sealing the light emitting element and the conductive part to the substrate; and
a lens part formed on the sealing part, wherein
elastic modulus of the lens part is higher than that of the sealing part, and
at room temperature, the elastic modulus of the sealing part is less than 1 megapascal (MPa) and the elastic modulus of the lens part is greater than or equal to 1 Mpa.

2. The light source unit according to claim 1 , wherein
a plurality of light emitting elements is provided,
each light emitting element includes a first light emitting element and a second light emitting element, and
the first light emitting element and the second light emitting element are separately sealed by the sealing part.

3. A vehicle lamp comprising the light source unit according to claim 1 .

4. A light source unit comprising:
a socket housing which has an engaging portion to be engaged with a predetermined member;
a light emitting module which is disposed in the socket housing and has a light emitting element serving as a light source, a substrate formed with a wiring pattern for supplying current to at least the light emitting element and a conductive part for connecting the light emitting element to the wiring pattern;
a sealing part for sealing the light emitting element and the conductive part to the substrate; and
a lens part which has a cover lens portion for covering at least a portion of the sealing part and a leg portion protruding from the cover lens portion and positioned in contact with the substrate, wherein
the lens part is formed with an opening portion of the leg portion, the opening portion extending from an inner surface of the leg portion to an outer surface of the leg portion, and
a part of the sealing part exists in the opening portion in a state where the sealing part is cured.

5. A vehicle lamp comprising the light source unit according to claim 4 .

6. The light source unit according to claim 4 , wherein
the lens part is disposed on the substrate by pressing the cover lens portion against the sealing part before a curing of the sealing part.

7. The light source unit according to claim 6 , wherein
a boundary portion between the cover lens portion and the inner surface of the leg portion is formed as a curved surface portion.

8. The light source unit according to claim 6 , wherein
the cover lens portion is formed with a pressing surface which is pressed against the sealing part and is convex toward the sealing part.

9. The light source unit according claim 4 , wherein a plurality of light emitting elements is provided and each light emitting element includes a first light emitting element and a second light emitting element, which are separately sealed by the sealing part.

Assignees

• Koito Mfg Co Ltd

Inventors

• Nakagawa Tomoyuki
• Ozawa Atsushi
• Naito Ryota

Classifications

• F21S43/255 Primary

  Filters · CPC title

• F21S43/26 Primary

  Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255 · CPC title

• F21S43/195

  Details of lamp holders, terminals or connectors · CPC title

• F21S41/151

  arranged in one or more lines · CPC title

• F21S41/194

  Bayonet attachments · CPC title