US3670158A - Projector - Google Patents

Projector Download PDF

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Publication number
US3670158A
US3670158A US865814A US3670158DA US3670158A US 3670158 A US3670158 A US 3670158A US 865814 A US865814 A US 865814A US 3670158D A US3670158D A US 3670158DA US 3670158 A US3670158 A US 3670158A
Authority
US
United States
Prior art keywords
frame
reflector
lamp unit
retaining ring
strips
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
US865814A
Other languages
English (en)
Inventor
Norio Suzuki
Yoji Furukawa
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.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co 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
Priority claimed from JP8949668U external-priority patent/JPS488151Y1/ja
Priority claimed from JP11428268U external-priority patent/JPS488149Y1/ja
Application filed by Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Application granted granted Critical
Publication of US3670158A publication Critical patent/US3670158A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/068—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by mechanical means
    • B60Q1/0683—Adjustable by rotation of a screw

Definitions

  • ABSTRACT A projector comprising a lamp unit enclosing a concave reflector, a light source disposed at a vicinity of focus point of said reflector, a front lens secured at the open end of said reflector, and a retaining ring engaged to the peripheral edges of said lamp unit is mounted on a supporting frame by means of the adjusting screws and a coil spring which resiliently biasing said lamp unit to the frame.
  • the frame is provided on its inner surface with projections which engage the outer surface of the reflector, whereby adjustment of the adjusting screws renders the lamp unit slidably movable so as to aim the optical axis without using a mounting ring.
  • the direction of radiation of beams is to be adjusted to form an angle of about 4 with respect to the ground, in addition to shock proof property, airtightness and so on, as required by the international standard of SAE (the Society of Automobile Engineers).
  • the lamp unit comprises a concave reflector, a light source disposed at a vicinity of focus point of said reflector, a front lens secured at the open end of said reflector, and a retaining ring engaged to said lamp unit.
  • the lamp unit is placed in a mounting ring which is secured by screws to the retaining ring.
  • the unit which is in the form of a single body with the mounting ring is placed in a housing or supporting frame. Control of the angle of the lamp unit with respect to the vertical and horizontal directions is effected by rotating adjustingscrews which connect the peripheral edge of the housing and the mounting ring at optional positions, thereby to fix the angle of radiation of beams with respect to the ground to comply with the standard.
  • the lamp of the above arrangement requires a lengthy period of time for assembly and is not of simplified construction and hence is expensive, since a number of separate parts are involved, namely, the light source unit is mounted on the mounting ring via the retaining ring, and the mounting ring is then secured to the housing.
  • This invention eliminates these drawbacks and has its object to provide a projector, simple in construction and easy to assemble, in which a plurality of projections formed on the inner surface of a frame for supporting a lamp unit are in face contact with the rear surface of a reflector included in said unit, and adjusting screws which connect a retaining ring for retaining said unit and the peripheral edge of the lamp unit are adjusted to cause the reflector to slidably move on said projections, whereby the angle of mounting said unit can be optionally varied to permit the direction of radiation of beams to form an angle complying with the standard;
  • the frame may be fabricated bya synthetic resin material, so that the device will be easy to fabricate, light, inexpensive and easy to handle.
  • FIG. 1 is a side elevation, partly in section, of a projector embodying this invention
  • FIG. 2 is a front elevation of the device shown in FIG. 1;
  • FIG. 3 is a cross section, partly broken away, taken along a line III-III in FIG. 2;
  • FIG. 4 is a cross section, partly broken away, taken along a line lV-IV in FIG. 2;
  • FIG. 5 is a front elevation showing a supporting frame of this invention.
  • FIG. 6 is a cross section taken along a line VI-VI in in FIG.
  • FIG. 7 is a perspective view showing a part of the device shown in FIG. 1
  • FIG. 8 is a side elevation, partly in section, of a modification of the invention.
  • FIG. 9 is an enlarged cross section, partly broken away, of a part of the device shown in FIG. 8;
  • FIG. 10 isa view similar to FIG. 8, showing a further modification of the invention.
  • the lamp unit of a sealed beam typelamp 1 comprises a concave reflector 2, a light source (not shown) disposed at a vicinity of focus point of said reflector 2 for forwardly reflecting a radiation beam, a front lens 3 secured at the open end of said reflector 2, and a retaining ring 4 engaged to said lamp unit 1 at their outer peripheries.
  • a concave reflector 2 a light source (not shown) disposed at a vicinity of focus point of said reflector 2 for forwardly reflecting a radiation beam
  • a front lens 3 secured at the open end of said reflector 2
  • a retaining ring 4 engaged to said lamp unit 1 at their outer peripheries.
  • ferrules 5 and 6 secured to terminal lugs 7 and 8 which in turn are to be connected to the terminals of a source of power supply.
  • the lamp unit is arranged such that the reflector 2 is freely received in a frame 9 made of a synthetic resin such as plastic so as toperrnit said ferules 5 and 6 and terminal lugs 7 and 8 to extend backwardly from an opening 9a formed in said frame 9.
  • a supporting piece 10 is mounted on a predetermined portion of the retaining ring 4.
  • Another supporting piece 11 is similarly disposed with a spacing from said supporting piece 10 approximately at with respect to the axis of the retaining ring 4, as shown in FIG. .2 wherein like portions are designated by the same reference numerals and a description thereof is omitted.
  • the supporting pieces 10 and 11 are partly cut to form dents 10a and 11a through which adjusting screws 12 threadably engage threaded bores 9b formed in the frame 9 in such a manner that the heads 12a thereof are respectively retained by said dents 10a and 11a, thereby positively mounting the lamp unit on the frame 9.
  • the position of the unit at the time of mounting may be determined by securing, as shown in FIG. 3, a projection part 13 mounted on a predetermined portion of said lamp unit 1 and said retaining ring 4. by the medium of a retaining piece 14.
  • a tongue piece 15 having a bore 15a which receives one end of a coiled spring 16 having its other end retained in a hole 9c formed in the frame 9.
  • each projection 17 is fabricated by a synthetic resin material and illustrated in FIG. 7-in detail. As shown, each projection 17 has a contact surface 17a and a groove 17b, said contact surface contacting the outer curved surface of the reflector 2. The projections 17 pressingly support the reflector 2 inface contact with the outer surface thereof by means of the adjusting screw 12 shown in FIG. 1 and the coil spring 16 of FIG. 4.
  • Each groove 17b serves to define two projecting sections each having a thickness approximately equal to that of the frame 9 of the projection 17, whereby moulding distortion of the frame which tends to be caused due to the difference in thickness of the projection 17 and the frame may be eliminated.
  • the provision of the grooves 17b also serves to reduce a friction between the grooves 17 and the frame 9 and allow the frame to slide smoothly.
  • the portion of the reflector 2 of the sealed beam type lamp of the arrangement set forth above is allowed to slide on the contact surfaces 17a of the projections 17 by adjustably rotating the adjusting screws 12, whereby the angle of mounting the lamp unit can be optionally aimed, and the angle with respect to the vertical and horizontal directions of radiation of beams can be selected to comply with the standard.
  • FIGS. 8 and 9 illustrate a modification of the invention, wherein like portions are indicated by the same reference numerals as used in FIG. 1 and a description thereof is omitted.
  • the outer surface of the strip 19 defines a curved surface whose curvature corresponds to an are having a radius R from a point 0 of the lens 3, as
  • the frame 9- is provided with bends 20 formed on the inner surface thereof at places respectively corresponding to said plurality of projecting strips 19, and which have comers engaging said strips 19 in face to face relationship.
  • the larnp unit is thus pressedly supported to the frame 9 by means of the adjusting screws 12 and the coil spring 16 having one end received by the bore 15a formed. in the tongue piece 15 and the other end connected to the inner portion of the frame 9.
  • the lamp unit is permitted to slide on the bends 20 disposed in the frame 9 by adjustably screwing or unscrewing the adjusting screws 12 so as to determine the angle of radiation of beams complying with the standard.
  • FIG. A further modification-of the projector is shown in FIG. in which like parts are indicated by the same references as used in- FIG. 1 and a detailed description thereof is omitted.
  • the frame 9 made of metal sheet has forwardly projecting portions 9d which are curved in such a manner as to surround the a lamp unit and a plurality of platforms 21 disposed on its surface facing to the'reflector 2, each said platform having a semi-circular sliding member 22 planted therein. Saidsemicirc'ular sliding member is made of synthetic resin.
  • the frame 9and the lamp unit are supported together in a mutually pressing relationship by the adjusting screws12 and the coil spring of FIG.
  • the rotation of the adjusting screws 12 causes the reflector 2 to slidably move in engagement with the sliding members 22, making it possible to adjust the angle of radiation of beams to comply with the standard.
  • The" number of the's'liding' members may be at least more than two.
  • the projector of the construction described can be used not only as the headlight of an automobile, but also as one used for transportation and railway purposes where alight source unit including a front lens and a reflector as a unit body is used and wherethe axis of light should be controlled, as in lamps of a sealed beam type or asemi-sealed type.
  • a projector comprising: a sealed beam lamp unit (1) includingz k,
  • a concave reflector (2) having a focus point; v a projection part (13) disposed at a predetermined position at the peripheraledge of said lamp unit' 1 a light source disposed in the vicinity of the focus point of said reflector (2); and g y Y s a front lens (3) mounted at the open end of said reflector a retaining ring (4) engaged with the peripheral edge of said lamp unit l) and having a retaining piece 14) for engaging said projection part (13) for fixing the position thereof relative to said projection part l3), and a plurality of spaced supporting pieces (10, 11) at the peripheral edge of said retaining ring (4);
  • each projection (17) having a'groove to define a pair of projecting sections, said groove having a width approximately equal to the thickness of said frame (9), and said projecting sections having an arcuate surface for contacting the rear surface of said reflector (2);
  • a projector according to claim 1 wherein: said reflector (2) has a plurality of projection strips (19) on the rear outer surface thereof; said frame (9) has at least one protuberance (20) therein at v a location corresponding to the location of said strips (19), said protuberance (20) slidably contacting said strips (19); and

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Securing Globes, Refractors, Reflectors Or The Like (AREA)
US865814A 1968-10-15 1969-10-13 Projector Expired - Lifetime US3670158A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8949668U JPS488151Y1 (de) 1968-10-15 1968-10-15
JP11428268U JPS488149Y1 (de) 1968-12-28 1968-12-28

Publications (1)

Publication Number Publication Date
US3670158A true US3670158A (en) 1972-06-13

Family

ID=26430910

Family Applications (1)

Application Number Title Priority Date Filing Date
US865814A Expired - Lifetime US3670158A (en) 1968-10-15 1969-10-13 Projector

Country Status (4)

Country Link
US (1) US3670158A (de)
DE (1) DE1952027C3 (de)
FR (1) FR2020755A1 (de)
GB (1) GB1286129A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878388A (en) * 1971-07-30 1975-04-15 Lucas Industries Ltd Lamp assemblies
US20040257812A1 (en) * 2003-05-06 2004-12-23 Seiko Epson Corporation Light source device, method and device for manufacturing the same, and projector
US20120170297A1 (en) * 2011-01-03 2012-07-05 General Electric Company Reflector lamp used as daytime running lamp

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2951619C2 (de) * 1979-12-21 1984-03-08 Gabel Kg, 5830 Schwelm Scheinwerfer
GB2315663A (en) * 1996-07-30 1998-02-11 Fii Footwear Management Ltd Footwear item
DE10255405B4 (de) * 2002-11-28 2005-04-14 Hella Kgaa Hueck & Co. Beleuchtungselement für Fahrzeuge und Verfahren zur Montage
CN105414916A (zh) * 2015-12-17 2016-03-23 江苏森莱浦光电科技有限公司 一种应用于uhp灯芯调焦的五维高精度装灯装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1358543A (en) * 1920-07-14 1920-11-09 Francis H Hardon Caster
US2266329A (en) * 1939-07-27 1941-12-16 Gen Motors Corp Head lamp mounting
US2824215A (en) * 1956-07-24 1958-02-18 Chester R Goff Headlight adjustment
US2826682A (en) * 1953-09-08 1958-03-11 Gen Motors Corp Lamp mounting
US3050621A (en) * 1958-02-10 1962-08-21 Spencer William Robert Lamp assembly
US3493740A (en) * 1967-06-21 1970-02-03 Gen Motors Corp Headlamp capsule

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1358543A (en) * 1920-07-14 1920-11-09 Francis H Hardon Caster
US2266329A (en) * 1939-07-27 1941-12-16 Gen Motors Corp Head lamp mounting
US2826682A (en) * 1953-09-08 1958-03-11 Gen Motors Corp Lamp mounting
US2824215A (en) * 1956-07-24 1958-02-18 Chester R Goff Headlight adjustment
US3050621A (en) * 1958-02-10 1962-08-21 Spencer William Robert Lamp assembly
US3493740A (en) * 1967-06-21 1970-02-03 Gen Motors Corp Headlamp capsule

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3878388A (en) * 1971-07-30 1975-04-15 Lucas Industries Ltd Lamp assemblies
US20040257812A1 (en) * 2003-05-06 2004-12-23 Seiko Epson Corporation Light source device, method and device for manufacturing the same, and projector
US20120170297A1 (en) * 2011-01-03 2012-07-05 General Electric Company Reflector lamp used as daytime running lamp
US8356922B2 (en) * 2011-01-03 2013-01-22 General Electric Company Reflector lamp used as daytime running lamp

Also Published As

Publication number Publication date
DE1952027C3 (de) 1975-10-23
DE1952027B2 (de) 1975-03-13
GB1286129A (en) 1972-08-23
FR2020755A1 (de) 1970-07-17
DE1952027A1 (de) 1970-04-16

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