EP0288084B2 - Light assembly with water-proof breather - Google Patents

Light assembly with water-proof breather Download PDF

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Publication number
EP0288084B2
EP0288084B2 EP88106524A EP88106524A EP0288084B2 EP 0288084 B2 EP0288084 B2 EP 0288084B2 EP 88106524 A EP88106524 A EP 88106524A EP 88106524 A EP88106524 A EP 88106524A EP 0288084 B2 EP0288084 B2 EP 0288084B2
Authority
EP
European Patent Office
Prior art keywords
water
path
cylinder
light assembly
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88106524A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0288084B1 (en
EP0288084A3 (en
EP0288084A2 (en
Inventor
Hiroyuki Tsukada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ichikoh Industries Ltd
Original Assignee
Ichikoh Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Ichikoh Industries Ltd filed Critical Ichikoh Industries Ltd
Publication of EP0288084A2 publication Critical patent/EP0288084A2/en
Publication of EP0288084A3 publication Critical patent/EP0288084A3/en
Publication of EP0288084B1 publication Critical patent/EP0288084B1/en
Application granted granted Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/03—Gas-tight or water-tight arrangements with provision for venting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/30—Ventilation or drainage of lighting devices

Definitions

  • the present invention relates to a light-assembly with water-proof breather by which it is possible to prevent rain water from entering from outside into a closed light assembly through the breather through which a breathing is provided between the inside and outside of the light assembly.
  • Fig. 1 schematically shows a conventional light assembly with a water-proof breather.
  • the reference numeral 1 indicates the entire light assembly.
  • This light assembly 1 comprises a body 2 formed by a housing or reflector a lens 3 attached by an adhesive 13, to a concave portion 12 formed on the circumference of the front opening of the light-assembly body 2, and a bulb 5 disposed in the interior (lamp house) of the light assembly that is defined, as closed, by the light-assembly body 2 and lens 3.
  • the reference numeral 6 indicates a hollow cylindrical member formed integrally with and as protruded from the body 2. There is formed in the wall of the body 2 a hole 7 which communicates the inside of the lamp house 4 with the inside of the cylindrical member 6, namely, with the outside of the light assembly 1. A step 8 is formed on the outer circumference of the free end of the cylinder 6.
  • the reference numeral 9 indicates a water-stop wall formed integrally with the body 2 and as protruded from a portion lower than the cylinder 6.
  • the reference numeral 10 indicates a bend as a cap member for the cylinder 6.
  • the bend 10 is made of a rubber tube and curved in U-shape. Also the bend 10 has a step 11 formed on the inner circumference of one end thereof. This bend 10 is fitted at the end thereof onto the free end of the cylinder 6 with the end face of the bend 10 placed as abutting the step 8 at the end of the cylinder 6, the end face of the cylinder 6 placed as abutting the step 11 on the bend 10 and with the other end of the bend 10 directed downwardly and facing the water-stop wall 9.
  • the lamp house 4 is communicated with the outside through the hole 7 in the cylinder 6 and the bend 10.
  • a breathing can be made between the lamp house 4 and the outside of the light assembly 1.
  • the bend 10 is curved in U-shape and one end of thereof is fitted onto the end of the cylinder 6 with the other end directed downwardly, any water having entered the lower end opening of the bend 10 and being about to enter the lamp house 4 through the inside of the bend 10 will drop due to its own weight in the middle of the long, curved course inside the bend 10 and be discharged from the lower end opening of the bend 10.
  • the water is blocked from entering the light assembly 1.
  • the lower end opening of the bend 10 is directed downwardly toward the water-stop wall 9, whereby any rain water is prevented from entering the lower end opening of the bend 10.
  • the water-proof breather of the conventional light assembly employs, for both breathing and water- proofing functions, the U-shaped bend 10 which has one end thereof fitted onto the cylinder 6 and the other end directed downwardly. Therefore, the water-proof breather has a large vertical dimension, needing a large space for installation. In case the water-stop wall 9 opposing the lower end opening of the bend 10 is formed integrally with the light-assembly body 2, the vertical dimension will be still larger.
  • a light assembly with a water-proof breather comprises a housing in which a bulb is disposed and a lens is provided covering front opening of the housing. Said housing and lens forming together a lamp house.
  • a cylindrical member is provided at the rearward end of the housing having an angular opening communicating with a downwardly extending opening to the atmosphere and an opening into the inner of said lamp housing. The air path from the outer atmosphere to the inner of the housing has a mazy form.
  • a cap member is fitted onto said cylindrical member for closing said angular opening in an axial direction of said lamp housing.
  • a lamp display with a water-proof breather comprising a housing in which a bulb is disposed and a lens is provided covering the front opening of the housing. Said housing and the lens together form a lamp house.
  • the water-proof breather has an air-path means extending from the back of the housing rearwardly and in which a path communicates said lamp house with the atmosphere.
  • Said air-path means comprises a cylindrical member being a tube member with a vertical partition onto which a cap member is fitted. The outlet of the air path opens to the lower outer circumference of said cylindrical member. The opening into the lamp housing is positioned at the lower portion of the tube member.
  • the present invention seeks to provide a light assembly with an improved water-proof breather.
  • the above object can be attained by providing a light assembly with a water-proof breather according to claim 1.
  • the hole and opening formed in the cylinder, and the communication path providing a communication between the breather and opening enable, in cooperation with one another, the breathing between the inside and the outside of the light assembly.
  • a mazy air-path formed by the hole, communication path and opening makes it possible to prevent rain water from entering the light-assembly inside from outside.
  • the cylinder provided as protruded from the light-assembly body provides for both breathing and water-proofing functions.
  • the reference numeraL 22 indicates a hollow cylindrical member or cylinder formed integrally with and as protruded from a light-assembly body 20.
  • the cylinder 22 has a step 24 formed on the outer circumference at the end thereof.
  • the cylinder 22 has formed axially integrally therewith at the upper portion of the inner circumference thereof a small cylinder 26 within which formed axially therewith is a hole 30 to provide a communication between the inside and outside of a lamp house 28.
  • the hole 30 has the inside diameter reduced as it goes from an opening 32 at the end-face side of the small cylinder 26 (cylinder 22) toward the inside of the lamp house 28, and also has an opening 34 of a further small diameter formed in the wall of the light-assembly body 20 and which is set back from the wall of the small cylinder 26.
  • a communication is established between the inside and outside of the lamp house 28 through the opening 34 at the side of the lamp house 28 and the opening 32 at the end-face side (outer side) of the small cylinder 26.
  • the cylinder 22 has formed at each of the lower right and left portions of the circumference 36 thereof a cut 38 extending from the step 24, namely, from the end face of the cylinder 22 in the direction of the lamp house 28.
  • the cylinder 22 has formed horizontally and integrally therewith nearly at the center of the inner circumference thereof a baffle 40 which has a gap 42 formed in the center thereof and axially of the cylinder 22.
  • the reference numeral 44 indicates a cap member of which the inside diameter is nearly equal to or somewhat smaller than the outside diameter of the portion of the cylinder 22 that is outer than the step 24 and the depth is a little larger than the distance from the end face to the set 24 of the cylinder 22.
  • the cap member 44 is fitted onto the free end of the cylinder 22 with the opening end of the cap member 44 abutting the step 24 of the cylinder 22.
  • the opening 32 at the end face (outer side) of the hole 30 in the cylinder 22 and a portion (outer side) on the end-face side that is outer than the step 24 at the cut in the cylinder 22 are closed by the cap member 44.
  • an opening 46 communicating with the outside is formed in a portion inner (toward the lamp house 28) than the step 24 at the cut 38 in the cylinder 22.
  • the depth of the cap member 44 is larger than the distance from the end face of the cylinder 22 to the step 24, there is defined a space 48 between the end face of the cylinder 22 and inner covering face of the cap member 44.
  • the hole 30 communicating with the inside of the lamp house 28 and the opening communicating with the outside are communicated with each other through a mazy path consisting of a bore 50 of the cylinder 50, gap 42 in the baffle 40 and the aforementioned space 48.
  • the water-proof breather of the light assembly according to the present invention can provide a breathing since the inside and outside of the lamp house 28 are communicated with each other through the opening 32 of the hole 30, hole 30 itself, opening 34 of the hole 30, space 48, bore 50, gap 42, and the opening 46.
  • opening 46 communicating with the outside, hole 30 itself, space 48 as a path communicating the opening 46 with the outside, bore 50 and gap 42 form together a mazy air-path, even if a rain water has entered through the lower lateral opening 46 in the cylinder 22 and is about to enter the lamp house 28 through the hole 30 at the upper portion of the cylinder 22 via the gap 42, bore 50 and space 48, it will drop due to its own weight in the middle of the long, mazy course or air-path and be discharged from the lower lateral opening 46 in the cylinder 22. Thus, the water can be blocked from entering the lamp house 28.
  • the opening 46 communicating with the outside is formed in the lower portion of the cylinder 22
  • the hole 30 communicating with the inside of the lamp house 28 is formed in the upper portion of the cylinder 22
  • the lower portion of the inner circumference of the hole 30 is slanted downwardly from above in a direction of the opening 32 at the end-face side from the opening 34 at the side of the lamp house 28, and the opening 34 at the side of the lamp house 28 communicates with the inside of the lamp house 28 through the hole 30 formed as set back from the inner wall of the aforementioned small cylinder 26. So, any rain water can be perfectly blocked against entering the lamp house 28.
  • the cylinder 22 formed as protruded from the light-assembly body 20 can provide for both breathing and water-proofing functions. So the vertical dimension of the breather may be the outside diameter of the cylinder 22 and it is smaller than that of the breather of the conventional light assembly using a U-shaped bend. Therefore, the light assembly with the water-proof breather according to the present invention needs only a small space for installation.
  • the hole 30, cut 38 (opening 46), baffle, gap 42, etc. formed in the cylinder 22 formed as protruded from the light-assembly body 20 are so arranged with a consideration that the releasing direction of the molding dies for the light-assembly body 20 is to coincides with the axial direction of the cylinder 22.
  • the water-proof breather of the light assembly comprises a cylindrical member formed as protruded from a light-assembly body and a cap member fitted onto the cylindrical member, the cylindrical member or cylinder having formed therein a hole communicating with the inside of the light assembly and an opening communicating with the outside, the hole and opening being communicated with each other through a communication path. So the hole and opening formed in the cylinder and the path communicating the hole with the opening provide for a breathing or air communication between the inside and outside of the light assembly. Also, the mazy air-path formed by the hole, communication path and opening can shut off any rain water about to enter the light assembly from outside.
  • the vertical dimension of the breather may be the outside diameter of the cylinder, and it is small as compared with that of the water-proof breather of the conventional light assembly which adopts a U-shaped bend. Therefore, the breather of the light assembly according to the present invention needs only a small space for installation.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
EP88106524A 1987-04-23 1988-04-22 Light assembly with water-proof breather Expired - Lifetime EP0288084B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP6059887U 1987-04-23
JP1987060598U JPH0353369Y2 (US06168655-20010102-C00055.png) 1987-04-23 1987-04-23
JP60598/87U 1987-04-23

Publications (4)

Publication Number Publication Date
EP0288084A2 EP0288084A2 (en) 1988-10-26
EP0288084A3 EP0288084A3 (en) 1989-10-25
EP0288084B1 EP0288084B1 (en) 1993-12-15
EP0288084B2 true EP0288084B2 (en) 1999-09-15

Family

ID=13146838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88106524A Expired - Lifetime EP0288084B2 (en) 1987-04-23 1988-04-22 Light assembly with water-proof breather

Country Status (3)

Country Link
EP (1) EP0288084B2 (US06168655-20010102-C00055.png)
JP (1) JPH0353369Y2 (US06168655-20010102-C00055.png)
DE (1) DE3886252T3 (US06168655-20010102-C00055.png)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9422253D0 (en) * 1994-11-04 1994-12-21 Magneti Marelli Uk Ltd Sealing member
JP2014154408A (ja) * 2013-02-12 2014-08-25 Stanley Electric Co Ltd 車両用灯具
CN104676560A (zh) * 2013-11-27 2015-06-03 海洋王（东莞）照明科技有限公司 呼吸装置及具有该呼吸装置的灯具

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1394411A (en) * 1972-05-08 1975-05-14 Westfaelische Metall Industrie Vehicle headlamps
JPS49126383U (US06168655-20010102-C00055.png) * 1973-02-21 1974-10-29
SE414150B (sv) * 1975-04-18 1980-07-14 Bosch Gmbh Robert Stralkastare, serskilt for motorfordon
JPS5432388U (US06168655-20010102-C00055.png) * 1977-07-29 1979-03-02

Also Published As

Publication number Publication date
EP0288084B1 (en) 1993-12-15
DE3886252T2 (de) 1994-04-07
DE3886252D1 (de) 1994-01-27
EP0288084A3 (en) 1989-10-25
DE3886252T3 (de) 2000-01-05
EP0288084A2 (en) 1988-10-26
JPH0353369Y2 (US06168655-20010102-C00055.png) 1991-11-21
JPS63167602U (US06168655-20010102-C00055.png) 1988-11-01

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