Luminescent, ultraviolet protected automotive interior members

• US 9,187,034 B2
• Filed: 03/15/2013
• Issued: 11/17/2015
• Est. Priority Date: 03/15/2013
• Status: Active Grant

• Current Assignee: International Automotive Components Group North America (Lear Corporation)
• Original Assignee: International Automotive Components Group North America (Lear Corporation)
• Inventors: Tarahomi, Sassan, Seguin, Zachary
• Primary Examiner(s): Hannaher, Constantine
• Assistant Examiner(s): SAHU, MEENAKSHI S
• Application Number:
  US13/833,396
• Publication Number:
  US 20140264079A1
• Time in Patent Office: 977 Days
• Field of Search: 250/459.1, 250/458.1, 252/301.35, 252/301.36, 252/301.4 R, 252/301.6 R
• US Class Current: 1/1
• CPC Class Codes: B60Q 3/68 using ultraviolet light
• CPC Class Codes: B60Q 3/745 using lighting panels or mats, e.g. electro-luminescent panels, LED mats
• CPC Class Codes: B60R 13/02 Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners B60R13/01 takes precedence ; padded linings for the vehicle interior B60R21/04; arrangements or adaptations of floor mats or carpets in vehicles B60N3/04; internal lining for trains B61D17/18
• CPC Class Codes: B60R 2013/0287 integrating other functions or accessories
• CPC Class Codes: C09K 11/025 non-luminescent particle coatings or suspension media
• CPC Class Codes: C09K 11/08 containing inorganic luminescent materials
• CPC Class Codes: F21K 2/00 Non-electric light sources using luminescence using excitation by radioactivity G21H3/02, H01J65/06, H01J65/08; using excitation by an external electromagnetic field or by external corpuscular radiation H01J65/04; Light sources using electrochemiluminescence

Abstract

A component of a motor vehicle comprising a photoluminescent interior member formed of a plastic composition, wherein the plastic composition comprises at least one polymer and a plurality of additives comprising at least one photoluminescent material and at least a first ultraviolet protector, wherein the at least one photoluminescent material absorbs electromagnetic radiation in a first ultraviolet range of an electromagnetic spectrum, and thereafter emits electromagnetic radiation in a visible radiation range of the electromagnetic spectrum, and wherein the first ultraviolet protector is an ultraviolet absorber, wherein the ultraviolet absorber absorbs electromagnetic radiation in a second ultraviolet range of the electromagnetic spectrum and does not absorb electromagnetic radiation in the first ultraviolet range of the electromagnetic spectrum.

Claims

1. A component of a motor vehicle comprising:

an injection molded photoluminescent interior member having a thickness of 1.5 mm to 2.5 mm, wherein the injection molded photoluminescent interior member is formed of a plastic composition, wherein the plastic composition comprises a blend of at least one polymer and a plurality of additives comprising at least one photoluminescent material and at least a first ultraviolet protector;

wherein the at least one photoluminescent material absorbs electromagnetic radiation in a first ultraviolet range of an electromagnetic spectrum, and thereafter emits electromagnetic radiation in a visible radiation range of the electromagnetic spectrum;

wherein the first ultraviolet protector is an ultraviolet absorber, wherein the ultraviolet absorber absorbs electromagnetic radiation in a second ultraviolet range of the electromagnetic spectrum and does not absorb electromagnetic radiation in the first ultraviolet range of the electromagnetic spectrum.

2. The component of claim 1 wherein:

the first ultraviolet range of an electromagnetic spectrum is an ultraviolet A range of an electromagnetic spectrum; and

the second range of the electromagnetic spectrum is at least one of an ultraviolet B range and an ultraviolet in the middle range of the electromagnetic spectrum.

3. The component of claim 1 wherein:

the plastic composition further comprises at least one colorant, wherein the colorant reflects electromagnetic radiation in the visible radiation range of the electromagnetic spectrum, and does not absorb electromagnetic radiation in the first ultraviolet range of the electromagnetic spectrum.

4. The component of claim 1 wherein:

the plastic composition further comprises at least one colorant wherein the colorant comprises a dye.

5. The component of claim 1 wherein:

the plastic composition further comprises at least one colorant wherein the colorant has a particle size of less than or equal to 0.50 microns.

6. The component of claim 1 wherein:

the photoluminescent interior member is color matched in the visible radiation range of the electromagnetic spectrum to at least one interior member of the motor vehicle which is not photoluminescent.

7. The component of claim 1 wherein:

the at least one photoluminescent material absorbs electromagnetic radiation in the ultraviolet A range between 320-390 nanometers, and thereafter emits electromagnetic radiation in a visible radiation range between 400-750 nanometers.

8. The component of claim 7 wherein:

wherein the at least one photoluminescent material emits electromagnetic radiation in a visible radiation range of blue, green, yellow or red individually or combination.

9. The component of claim 1 wherein:

the photoluminescent interior member comprises at least one of an instrument panel member, a sidewall member, a console member, an overhead member, a pillar member, a floor member and a seating member.

10. The component of claim 1 wherein:

the photoluminescent interior member is arranged to illuminate at least one of a floor area of the vehicle and a storage compartment of the vehicle.

11. The component of claim 1 wherein:

the photoluminescent interior member is arranged to illuminate at least one of a gauge, an indicator and controllers of the motor vehicle.

12. The component of claim 1 wherein:

the at least one polymer comprises at least one of a polypropylene, acrylonitrile-butadiene-styrene, polyphenylene oxide, styrene-maleic-anhydride and polycarbonate.

13. The component of claim 1 wherein:

the photoluminescent material comprises a phosphorescent material.

14. The component of claim 13 wherein:

the phosphorescent material comprises tris(2-phenyl pyridine) iridium, alkaline earth metal sulfide or aluminate crystals.

15. The component of claim 1 wherein:

the plurality of additives further comprise a second ultraviolet protector to protect the photoluminescent interior member from the electromagnetic radiation in the ultraviolet A range without absorbing electromagnetic radiation in the ultraviolet A range.

16. The component of claim 15 wherein:

the second ultraviolet protector is one of a free radical scavenger and an excited state quencher.

20. The component of claim 1 wherein:

the injection molded photoluminescent interior member exhibits a Delta E value of less than 3.0 upon exposure to 1240 KJ/m2 in a xenon arc weatherometer.

17. A method of illuminating an interior area of a motor vehicle comprising:

injection molding at least one photoluminescent interior member having a thickness of 1.5 mm to 2.5 mm, wherein the injection molded photoluminescent interior member is formed of a plastic composition, wherein the plastic composition comprises a blend of at least one polymer and a plurality of additives comprising at least one photoluminescent material and at least first ultraviolet protector;

wherein the at least one photoluminescent material absorbs electromagnetic radiation in a first ultraviolet range of an electromagnetic spectrum, and thereafter emits electromagnetic radiation in a visible radiation range of the electromagnetic spectrum;

wherein the first ultraviolet protector is an ultraviolet absorber, wherein the ultraviolet absorbs electromagnetic radiation in a second ultraviolet range of the electromagnetic spectrum and does not absorb electromagnetic radiation in the first ultraviolet range of the electromagnetic spectrum; and

absorbing electromagnetic radiation in the first range of the electromagnetic spectrum with the at least one photoluminescent material, and thereafter emitting electromagnetic radiation in the visible radiation range of the electromagnetic spectrum to illuminate the interior area of the motor vehicle.

18. The method of claim 17 wherein:

the first ultraviolet range of an electromagnetic spectrum is an ultraviolet A range of an electromagnetic spectrum; and

the second range of the electromagnetic spectrum is at least one of an ultraviolet B range and an ultraviolet in the middle range of the electromagnetic spectrum.

19. The method of claim 17 further comprising:

color matching the photoluminescent interior member in the visible radiation range of the electromagnetic spectrum to at least one interior member of the motor vehicle which is not photoluminescent.