Indicating light

• US 7,134,770 B2
• Filed: 03/13/2003
• Issued: 11/14/2006
• Est. Priority Date: 03/13/2002
• Status: Expired due to Term

• Current Assignee: Bartec GmbH (Capvis Equity III LP)
• Original Assignee: Bartec GmbH (Capvis Equity III LP)
• Inventors: Lux, Karl-Heinz, Barlian, Reinhold
• Primary Examiner(s): Husar, Stephen F
• Application Number:
  US10/387,816
• Publication Number:
  US 20030210552A1
• Time in Patent Office: 1,342 Days
• Field of Search: 362/311, 362/326, 362/338, 362/340, 362/186, 362/363, 362/545, 362/555, 362/800
• US Class Current: 362/338
• CPC Class Codes: F21S 8/00 Lighting devices intended for fixed installation F21S9/00, F21S10/00 take precedence; using a string or strip of light sources F21S4/00
• CPC Class Codes: F21V 25/02 coming into action when lighting device is disturbed, dismounted, or broken
• CPC Class Codes: F21W 2111/00 Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

Indicating light for optical display, comprising a housing including electrically conducting components, a light-emitting diode, a light rod and a round cap.

Claims

1. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure.

2. Indicating light according to claim 1, characterised in that at least the round head (9) of the light rod (5) has a milky tinge.

3. Indicating light according to claim 1, characterised in that at least the round head (9) of the light rod (5) is of a fluorescent milky colour.

4. Indicating light according to claim 1, characterised in that the light rod (5) is formed in one piece with the round head (9) and from the same material.

5. Indicating light according to claim 1, characterised in that the light rod (5) is formed as a cylindrical tube one end of which is closed by the round head (9).

6. Indicating light according to claim 1, characterised in that the light rod (5) is fixed in the housing (1) by a tube end section (6) of the light rod (5) which is away from the round head (9).

7. Indicating light according to claim 1, characterised in that a printed circuit board (10) with the light-emitting diode (12) and electronic components (13) arranged on it is provided within the light rod (5).

8. Indicating light according to claim 1, characterised in that a front casing (15) is attachable to a mounting wall (21) which is arranged between a front ring (18) and a threaded nut (22) located at an insert housing (16).

9. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure, wherein part of the light rod (5) in the housing (1) is cast over with moulding resin (8) according to the explosion protection requirements.

10. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure, wherein the light rod (5) is designed as a pressure-resistant capsule for the purpose of way of explosion protection.

11. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure, wherein the housing (1) is closed by a cover (2) into which the light rod (5) protrudes.

12. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure, wherein a printed circuit board (10) is securely located in a position between holding ribs (11) in the light rod (5).

13. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure, wherein a front casing (15) extends over the part of the light rod (5) which protrudes past a cover (2) of the housing (1).

14. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure, wherein a front casing (15) has a translucent light cap (17) extending over the round head (9) of the light rod (5).

15. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure, wherein an inner side (23) of a light cap (17) facing the round head (9) of the light rod (5) has a refracting fine pearl structure.

16. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure, wherein the fine pearl structure of the inner side (14) of the light rod (5) and the fine pearl structure of the inner side (23) of a light cap (17) are essentially identical.

17. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure, wherein a light cap (17) has a milky or milky/coloured fluorescent tint.

18. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure, wherein the round head (9) of the light rod (5) and a light cap (17) are tinted to suit the wavelength of the light colour of the light-emitting diode (12).

19. Indicating light for optical display, comprising a housing (1) with electrical lead parts (4), a light-emitting diode (12) arranged in a light rod (5) which has a translucent round head (9) an inner side (14) of which facing the light-emitting diode (12) has a refracting fine pearl structure, wherein a light cap (17) is held by a front ring (18) which can be attached at an insert housing (16).

20. An indicating light for an optical display, comprising

a housing (1);

electrical lead parts (4) disposed in the housing;

a light rod (5);

a light-emitting diode (12) arranged in the light rod (5), wherein the light rod has a translucent round head (9) and wherein an inner side (14) of the translucent round head (9) and facing the light-emitting diode (12) has a refracting fine pearl structure.

21. Indicating light according to claim 20 wherein the housing (1) includes a foot section (3) fastened to a sectional rail.

22. Indicating light according to claim 20 wherein the light rod (5) comprises a rectangular tubular section (6) fixed in the housing (1), wherein the tubular section (6) is disposed relatively remote from the round head (9) and comprises a rectangular dimension larger than a dimension of the remaining part of the light rod (5) and forms a shoulder (7) at the beginning of the tubular section (6), wherein in area near the shoulder (7), the light rod (5) is surrounded by a cast molding resin (8), extending into the shoulder (7).

23. Indicating light according to claim 21 wherein the light rod (5) is made of an opaque material, and wherein light rod (5) is a solid piece of material, with a wall thickness both at the round head (9) and at the tubular end section (6), and between the round head (9) and the tubular end section (6) being essentially constant.

24. Indicating light according to claim 20 wherein at least the inner side (14) of the round head (9), facing the light-emitting diode (12), is of a fine pearl-shaped structure, not smooth but finely roughened by erosion, etching, grit blasting or any other appropriate forming of the mould surface, to allow a multitude of globular and/or pearl-shaped elevations, alternating with a multitude of small troughs being directly located next to each other, wherein any light emitted by the light-emitting diode (12) will diffract and be captured on the entire inner side (14) of the round head (9), thus making the round head (9) as such shine as a uniform large luminous element.

25. Indicating light according to claim 21 wherein the indicating light further comprises a front casing (15), covering the part of the light rod (5) projecting from the cover (2), wherein the front casing (15) comprises the insert housing (16) surrounding the light rod (5) like a tube and a light cap (17), attached to the insert housing (16) by means of a front ring 18, and wherein a sealing ring 20 is arranged between an edge (19) of the light cap (17) and the insert housing (16), and wherein the light cap (17) is made of an opaque material and covers the round head (9), leaving a small clearance.

26. Indicating light according to claim 25 wherein the inside (23) of the light cap (17), facing the round head (9), is of a fine pearly-shaped structure essentially identical with the finely roughened internal structure of the round head (9) and may be made by an identical production process, to cause a multitude of small pearl-shaped elevations and a multitude of small troughs to be alternative directly positioned next to each other, thus finely roughening the inside (23), and wherein the light cap (17) is coloured diffusely milky or milky/coloured and fluorescent, in order to reduce its translucency, with an inherent shine of the light cap (17) and more even and intensive lighting being achieved.

27. Indicating light according to claim 25 wherein both the round head (9) of the light rod (5) and the light cap (17) of the front casing (15) are coloured according to the light and colour wave lengths of the light-emitting diode (12), to achieve an optimally even and uniform lighting.

28. An indicating light for an optical display, comprising

a housing (1);

electrical lead parts (4) disposed in the housing (1);

a tubular light rod (5);

a light-emitting diode (12) arranged in the tubular light rod (5), a translucent round head (9) which closes the tubular light rod (5), wherein an inner side (14) of the translucent round head (9) facing to the light-emitting diode (12) has a a multitude of small globular elevations or/and small troughs being directly located next to each other.

29. An indicating light for an optical display, comprising

a housing (1);

electrical lead parts (4) disposed in the housing (1);

a tubular light rod (5);

a light-emitting diode (12) arranged in the tubular light rod (5), an insert housing (16) surrounding the light rod (5), a light cap (17), attached to the insert housing (16) by means of a front ring (18), wherein the light cap (17) covers the round head (9) with a small clearance, and an inner side (23) of a light cap (17) facing the round head (9) of the light rod (5) has the multitude of small globular elevations or/and small troughs being directly located next to each other.

30. An indicating light for an optical display, comprising

a housing (1);

electrical lead parts (4) disposed in the housing (1);

a tubular light rod (5);

a light-emitting diode (12) arranged in the tubular light rod (5), a translucent round head (9) which closes the tubular light rod (5), wherein an inner side (14) of the translucent round head (9) facing to the light-emitting diode (12) has a a multitude of small globular elevations or/and small troughs being directly located next to each other;

an insert housing (16) surrounding the light rod (5), a light cap (17), attached to the insert housing (16) by means of a front ring (18), wherein the light cap (17) covers the round head (9) with a small clearance, and an inner side (23) of a light cap (17) facing the round head (9) of the light rod (5) has the multitude of small globular elevations or/and small troughs being directly located next to each other.