JP2014174221A - Light source device - Google Patents

Light source device Download PDF

Info

Publication number
JP2014174221A
JP2014174221A JP2013044470A JP2013044470A JP2014174221A JP 2014174221 A JP2014174221 A JP 2014174221A JP 2013044470 A JP2013044470 A JP 2013044470A JP 2013044470 A JP2013044470 A JP 2013044470A JP 2014174221 A JP2014174221 A JP 2014174221A
Authority
JP
Japan
Prior art keywords
pressing
mirror
light
light source
optical members
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.)
Pending
Application number
JP2013044470A
Other languages
Japanese (ja)
Inventor
Kazuo Morohashi
一夫 諸橋
Takashi Yamazoe
尚 山添
Original Assignee
Nippon Seiki Co Ltd
日本精機株式会社
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
Application filed by Nippon Seiki Co Ltd, 日本精機株式会社 filed Critical Nippon Seiki Co Ltd
Priority to JP2013044470A priority Critical patent/JP2014174221A/en
Publication of JP2014174221A publication Critical patent/JP2014174221A/en
Pending legal-status Critical Current

Links

Images

Abstract

PROBLEM TO BE SOLVED: To provide a light source device capable of fixing a plurality of optical members with one pressing member and allowing cost reduction.SOLUTION: The light source device comprises: light-emitting elements 91a, 91b, 91c emitting illumination light B, R, G; optical members 92a, 92b, 92c, 92d, 92e reflecting or transmitting therethrough the illumination light B, R, G emitted by the light-emitting elements 91a, 91b, 91c; a case body 93 having support parts 93a, 93b, 93c, 93d, 93e for supporting the optical members 92a, 92b, 92c, 92d, 92e; and a pressing member 94 having a plurality of elastic pieces 94a, 94b, 94c, 94d, 94e for pressing the optical members 92a, 92b, 92c, 92d, 92e against the support parts 93a, 93b, 93c, 93d, 93e. The elastic pieces 94a, 94b, 94c of the pressing member 94 are in contact with the optical members 92a, 92b, 92c on a flat surface.

Description

  The present invention relates to a light source device that emits illumination light.

Conventionally, as an image display device, an LCD (Liquid Crystal Display) or DMD (Digital
A projector that displays an image using a micromirror device as an image modulation element has been proposed. As disclosed in Patent Document 1 and Patent Document 2, the light source device holding structure used in the image display device uses a leaf spring or a metal ground plate to obtain a highly reliable fixing means.

JP 2002-131840 A JP 2000-39670 A

However, the leaf spring described in Patent Document 1 is a method for fixing a single component, and the metal ground plate described in Patent Document 2 is a method for fixing a part of an optical component by inserting it into a case. It was not a system that can fix a plurality of optical members.
The present invention provides a light source device capable of fixing a plurality of optical members with a single pressing member and reducing the cost.

  The present invention includes light emitting elements 91a, 91b, and 91c that emit illumination lights B, R, and G, and a plurality of optical members 92a that reflect or transmit illumination lights B, R, and G emitted from the light emitting elements 91a, 91b, and 91c. , 92b, 92c, 92d, 92e, a case body 93 having support portions 93a, 93b, 93c, 93d, 93e for supporting the plurality of optical members 92a, 92b, 92c, 92d, 92e, and the plurality of optical members. A pressing member 94 having a plurality of elastic pieces 94a, 94b, 94c, 94d, and 94e that press the 92a, 92b, 92c, 92d, and 92e against the support portions 93a, 93b, 93c, 93d, and 93e. is there.

  In the present invention, the elastic pieces 94a, 94b, 94c of the pressing member 94 are in contact with the optical members 92a, 92b, 92c in a plane.

  In the present invention, the elastic pieces 94a, 94b, 94c of the pressing member 94 are in contact with the optical members 92a, 92b, 92c at curved portions.

  In the present invention, the pressing member 94 is integrally formed with a dustproof cover 94g.

  A plurality of optical members can be fixed with a single pressing member, and the cost can be reduced.

1 is an overview diagram showing a first embodiment of the present invention. Sectional drawing which shows embodiment same as the above. Sectional drawing which shows embodiment same as the above. Sectional drawing of the light source part which shows embodiment same as the above. The principal part expanded sectional view which shows embodiment same as the above. Sectional drawing of the light source part which shows 2nd embodiment of this invention. Sectional drawing which shows 3rd embodiment of this invention. Sectional drawing which shows embodiment same as the above. The front view which shows embodiment same as the above.

  Hereinafter, an embodiment in which the present invention is applied to a vehicle head-up display device will be described with reference to the accompanying drawings. 1 to 5 are diagrams showing a first embodiment.

  The vehicle head-up display device displays the virtual image V by reflecting the display light L projected by the display device 2 provided on the dashboard 1 of the vehicle to the vehicle driver 4 side by the windshield 3. The vehicle driver 4 can visually recognize the virtual image V superimposed on the landscape. The display device 2 includes a first unit A and a second unit B.

  The first unit A includes a projector 10, a plane mirror 21, a transmission screen 26, a heat sink 31, a housing 41, and the like. The second unit B includes reflectors 50 and 60, a housing 71, and the like.

  The projector 10 displays an image on the transmissive screen 26 by a field sequential method. The projector 10 includes a light source unit 11, a mirror unit 12, a prism 13, a DMD 14, and a projection lens member 15, and is fixed to a heat sink 31.

  The light source unit 11 of the projector 10 includes a blue light emitting diode 91a, a red light emitting diode 91b, a green light emitting diode 91c, lens members 91d, 91e, 91f, a circuit board 91g, a reflection mirror 92a, dichroic mirrors 92b, 92c, a lens 92d, and a mirror tunnel. 92e, a case body 93, and a pressing member 94.

  The blue light-emitting diode 91a, the red light-emitting diode 91b, and the green light-emitting diode 91c are made of top-view LEDs, and emit blue light B, red light R, and green light G, respectively. The blue light emitting diode 91a, the red light emitting diode 91b, and the green light emitting diode 91c are mounted on the circuit board 91g. A circuit board 91g on which the blue light emitting diode 91a, the red light emitting diode 91b, and the green light emitting diode 91c are mounted is fixed to the heat sink 31 by bolts (not shown). The circuit board 91g is in contact with the heat sink 31, and the heat generated by the blue light emitting diode 91a, the red light emitting diode 91b, and the green light emitting diode 91c is dissipated by the heat sink 31 through the circuit board 91g.

  The lens members 91d, 91e, and 91f collect the blue light B, red light R, and green light G emitted from the blue light emitting diode 91a, the red light emitting diode 91b, and the green light emitting diode 91c, respectively. The reflection mirror 92a reflects the blue light B emitted from the blue light emitting diode 91a and collected by the lens member 91d. The dichroic mirror 92b reflects the red light R emitted from the red light emitting diode 91b and collected by the lens member 91e, and transmits the blue light B reflected by the reflection mirror 92a. The dichroic mirror 92c reflects the green light G emitted from the green light emitting diode 91c and collected by the lens member 91f, and transmits the blue light B and the red light R transmitted or reflected by the reflection mirror 92b.

  The lens 92d is a condenser lens that causes blue light B, red light R, and green light G to enter the light incident surface of the mirror tunnel 92e. The mirror tunnel 92e has a quadrangular prism shape whose exit is larger than the entrance. The case body 93 is made of an opaque resin, and support portions 93a, 93b, 93c, 93d, and 93e are integrally formed. The reflection mirror 92a, the dichroic mirrors 92b and 92c, the lens 92d, and the mirror tunnel 92e are respectively held by the support portions 93a, 93b, 93c, 93d, and 93e of the case body 93.

  The pressing member 94 is made of a thin plate-like metal and has elastic pieces 94a, 94b, 94c, 94d, and 94e. The pressing member 94 is fixed to the case body 93 with a screw (not shown). The reflection mirror 92a, the dichroic mirrors 92b and 92c, the lens 92d, and the mirror tunnel 92e are pressed against the support portions 93a, 93b, 93c, 93d, and 93e of the case body 93 by elastic pieces 94a, 94b, 94c, 94d, and 94e, respectively. Has been.

  The elastic pieces 94a, 94b, 94c, 94d, and 94e of the pressing member 94 are necessary fixed loads F in the two-dimensional composite vector direction in the vertical direction and the horizontal direction, and the reflection mirror 92a, the dichroic mirrors 92b and 92c, the lens 92d, and the mirror tunnel. 92e is pressed. The elastic pieces 94a, 94b, 94c of the pressing member 94 are in contact with the reflection mirror 92a and the dichroic mirrors 92b, 92c in a plane.

  The display 19 is a case in which the mirror unit 12, the prism 13, the DMD 14, and the projection lens member 15 are accommodated in a case body 18. The display 19 is not in direct contact with the light source unit 11. The prism 13 transmits the light from the mirror unit 12 and irradiates the DMD 14. The DMD 14 is a reflective display element in which a large number of minute mirror surfaces are arranged in a plane, and generates display light L. The display light L is reflected toward the projection lens member 15 by the inclined surface 13 a of the prism 13. The projection lens member 15 enlarges the display light L and projects it onto the plane mirror 21. The projection lens member 15 may be composed of a single lens member or a plurality of lens members.

  The plane mirror 21 is held by the support member 23 and reflects the display light L from the projector 10 to the transmissive screen 26. The transmissive screen 26 is held by the support member 24, and the display light L from the projector 10 is imaged on the transmissive screen 26. The heat sink 31 is made of metal such as aluminum (Al) and has a plurality of heat radiation fins 31a. The plane mirror 21 and the transmissive screen 26 are fixed to the heat sink 31 via support members 23 and 24. The housing 41 is made of an opaque resin (for example, polypropylene), and houses the projector 10, the plane mirror 21, the transmission screen 26, and the like. The housing 41 is formed with a window 41a from which the display light L is emitted.

  The reflector 50 includes a plane mirror 51 and a support member 52. The plane mirror 51 reflects the display light L from the first unit A to the concave mirror 61. The support member 52 is fixed to the housing 71 and holds the plane mirror 35. The reflector 60 includes a concave mirror 61, a mirror holder 62, a stepping motor 63, and a support member 64. The concave mirror 61 is formed by depositing a metal (for example, aluminum) on a resin (for example, polycarbonate) to form a reflective surface 61a. The reflecting surface 61a is a concave surface, and the display light L reflected by the plane mirror 51 is enlarged to display the virtual image V. The concave mirror 61 is bonded to the mirror holder 62 with a double-sided adhesive tape. The mirror holder 62 is made of resin (for example, ABS), and the gear portion 65 and the shaft portion 66 are integrally formed.

  A gear 67 is attached to the rotation shaft of the stepping motor 63, and this gear 67 is engaged with the gear portion 65 of the mirror holder 62. The concave mirror 61 is supported in a rotatable state together with the mirror holder 62, and the projection direction of the display light L can be adjusted by rotating the concave mirror 61 by the stepping motor 63. The vehicle driver 4 operates a pushbutton switch (not shown) to adjust the angle of the concave mirror 61 so that the display light L is reflected at the eye position (that is, the virtual image V can be visually recognized).

  The housing 71 is made of an opaque resin (for example, polypropylene) and accommodates the reflectors 50 and 60. The housing 71 is provided with a light shielding wall 71a to prevent a phenomenon (washout) in which external light such as sunlight enters the transmission screen 26 and the virtual image V becomes difficult to see. The light shielding wall 71 a has a flat plate shape and is formed so as to hang obliquely from the top of the housing 71. An opening 71b through which the display light L is emitted is formed on the upper surface of the housing 71, and a translucent cover 72 is attached to the opening 71b. The translucent cover 72 is made of a transparent resin such as polycarbonate and has a curved shape.

  FIG. 6 shows a second embodiment. The second embodiment is different from the first embodiment only in the shape of the elastic pieces 94a, 94b, 94c of the pressing member 94, and the other configuration is the same as that of the first embodiment.

  The pressing member 94 is made of a thin plate-like metal and has elastic pieces 94a, 94b, 94c, 94d, and 94e. The reflection mirror 92a, the dichroic mirrors 92b and 92c, the lens 92d, and the mirror tunnel 92e are pressed against the support portions 93a, 93b, 93c, 93d, and 93e of the case body 93 by elastic pieces 94a, 94b, 94c, 94d, and 94e, respectively. Has been. The elastic pieces 94a, 94b, 94c of the pressing member 94 have a curved portion, and the curved portion is in contact with the reflection mirror 92a and the dichroic mirrors 92b, 92c.

  7 to 9 show a third embodiment. The third embodiment is different from the first embodiment only in the pressing member 94, and the other configuration is the same as that of the first embodiment.

  The pressing member 94 is made of a thin plate-like metal and has elastic pieces 94a, 94b, 94c, 94d, and 94e. The reflection mirror 92a, the dichroic mirrors 92b and 92c, the lens 92d, and the mirror tunnel 92e are pressed against the support portions 93a, 93b, 93c, 93d, and 93e of the case body 93 by elastic pieces 94a, 94b, 94c, 94d, and 94e, respectively. Has been. The pressing member 94 is integrally provided with a dustproof cover 94g. By folding the dustproof cover 94g and fixing the pressing member 94 to the case body 93, the reflecting mirror 92a, the dichroic mirrors 92b and 92c, the lens 92d, and the mirror tunnel 92e. It is possible to prevent dust from adhering to the surface.

  According to each embodiment, the reflecting mirror 92a, the dichroic mirrors 92b and 92c, the lens 92d, and the mirror tunnel 92e can be fixed by the single pressing member 94, and the cost of the light source unit 11 can be reduced. In addition, this invention is not limited to each embodiment, A various deformation | transformation is possible. For example, the pressing member 94 is made of metal, but may be made of resin.

11 Light source part (light source device)
92a Reflective mirror (optical member)
92b Dichroic mirror (optical member)
92c Dichroic mirror (optical member)
92d lens (optical member)
92e Mirror tunnel (optical member)
93 case body 93a support part 93b support part 93c support part 93d support part 93e support part 94 pressing member 94a elastic piece 94b elastic piece 94c elastic piece 94d elastic piece 94e elastic piece 94g dustproof cover

Claims (4)

  1.   A light emitting element that emits illumination light, a plurality of optical members that reflect or transmit illumination light emitted from the light emitting elements, a case body that has a support portion that supports the plurality of optical members, and a plurality of the optical members A light source device comprising: a pressing member having a plurality of elastic pieces that press against the support portion.
  2.   The light source device according to claim 1, wherein the elastic piece of the pressing member is in contact with the optical member in a plane.
  3.   The elastic piece of the pressing member is in contact with the optical member at a curved portion.
  4.   The light source device according to claim 1, wherein the pressing member is integrally formed with a dustproof cover.
JP2013044470A 2013-03-06 2013-03-06 Light source device Pending JP2014174221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2013044470A JP2014174221A (en) 2013-03-06 2013-03-06 Light source device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2013044470A JP2014174221A (en) 2013-03-06 2013-03-06 Light source device

Publications (1)

Publication Number Publication Date
JP2014174221A true JP2014174221A (en) 2014-09-22

Family

ID=51695514

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2013044470A Pending JP2014174221A (en) 2013-03-06 2013-03-06 Light source device

Country Status (1)

Country Link
JP (1) JP2014174221A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105068368A (en) * 2015-08-27 2015-11-18 杨毅 Luminescence apparatus, projection display apparatus and lamp fixture
CN105301881A (en) * 2015-10-12 2016-02-03 杨毅 Light emitting device and projection display device
CN106444239A (en) * 2015-08-04 2017-02-22 杨毅 Illuminating device, lighting fitting, projection display device
KR101795218B1 (en) * 2016-03-07 2017-11-08 현대자동차주식회사 Lighting apparatus for vehicle

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106444239A (en) * 2015-08-04 2017-02-22 杨毅 Illuminating device, lighting fitting, projection display device
CN105068368A (en) * 2015-08-27 2015-11-18 杨毅 Luminescence apparatus, projection display apparatus and lamp fixture
CN105301881A (en) * 2015-10-12 2016-02-03 杨毅 Light emitting device and projection display device
KR101795218B1 (en) * 2016-03-07 2017-11-08 현대자동차주식회사 Lighting apparatus for vehicle
US9970616B2 (en) 2016-03-07 2018-05-15 Hyundai Motor Company Lighting apparatus for vehicle

Similar Documents

Publication Publication Date Title
US10120189B2 (en) Heads-up display device
EP3185061B1 (en) Projection device and head-up display device
JP6115420B2 (en) Image display device
EP2769867B1 (en) Headup display apparatus for vehicle
US9454039B2 (en) Display device for vehicle
EP3133436B1 (en) Heads-up display and moving body equipped with heads-up display
JP6098375B2 (en) Head-up display device
US20140204465A1 (en) Head-up display device
JP6031741B2 (en) Display device
CN106796352B (en) Head-up display device
JP5092177B2 (en) Vehicle head-up display
JP5734888B2 (en) Display device, moving body, and installation method of display device
US7267444B2 (en) Image projector display device
CN100510506C (en) Lighting device and liquid crystal display device provided with such lighting device
JP5287828B2 (en) Head-up display device
US20100073579A1 (en) Optical member, display device using the optical member and movable body using the display device
US20120300486A1 (en) Vehicle back light unit and vehicle display system
US20070064174A1 (en) Illuminating device, and light source unit incorporating same
JP5241400B2 (en) Projection display
WO2016147570A1 (en) Head-up display
JP4437675B2 (en) Lighting device
US10234683B2 (en) Head-up display, and vehicle equipped with head-up display
US20100066984A1 (en) Display device and mobile apparatus
JP5830884B2 (en) projector
TW201441664A (en) Head-up projection system