WO2019021463A1 - Projection-type image display device - Google Patents

Projection-type image display device Download PDF

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Publication number
WO2019021463A1
WO2019021463A1 PCT/JP2017/027460 JP2017027460W WO2019021463A1 WO 2019021463 A1 WO2019021463 A1 WO 2019021463A1 JP 2017027460 W JP2017027460 W JP 2017027460W WO 2019021463 A1 WO2019021463 A1 WO 2019021463A1
Authority
WO
WIPO (PCT)
Prior art keywords
air passage
air
inlet
lamp
projection type
Prior art date
Application number
PCT/JP2017/027460
Other languages
French (fr)
Japanese (ja)
Inventor
英実 山田
真朗 乾
弘之 井上
英紀 石島
Original Assignee
マクセル株式会社
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 マクセル株式会社 filed Critical マクセル株式会社
Priority to PCT/JP2017/027460 priority Critical patent/WO2019021463A1/en
Priority to CN201810826688.7A priority patent/CN109307976B/en
Priority to CN201821183649.1U priority patent/CN208488643U/en
Publication of WO2019021463A1 publication Critical patent/WO2019021463A1/en

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2026—Gas discharge type light sources, e.g. arcs
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/16—Cooling; Preventing overheating
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings

Definitions

  • the present invention relates to a projection type video display.
  • a discharge lamp or the like is used as a light source in a projection type image display apparatus (projector) which projects an image on a screen or the like. Further, since the discharge lamp in use becomes high temperature, the projection type image display apparatus is provided with a cooling fan for the discharge lamp. Thereby, the temperature rise of the discharge lamp is suppressed.
  • Patent Document 1 discloses a projector capable of improving the cooling efficiency of a light emitting tube.
  • the light source device emits light by containing a light emitting tube having a light emitting portion that emits a light flux, a reflector that fixes the light emitting tube and reflects the light flux toward the illuminated area side, and a reflector.
  • the center of the first discharge port is disposed so as to substantially coincide with the optical axis, and the second and third discharge ports are provided in parallel on both sides of the first discharge port. Then, the cooling air is discharged from the respective discharge ports, whereby the light emitting unit is cooled.
  • cooling air is discharged from the three discharge ports to the light emitting unit. That is, the cooling air is discharged to the light emitting unit from three different directions.
  • the flow of the cooling air in the space area becomes complicated, the high temperature cooling air after cooling the light emitting unit is not efficiently exhausted to the outside. Then, the cooling capacity of the light emitting unit by the cooling air is reduced.
  • this invention aims at providing the projection type video display apparatus which improved the cooling capability of the discharge lamp.
  • a projection type image display apparatus includes a light source unit having a discharge lamp for emitting lamp light, a cooling fan for supplying cooling air for the discharge lamp, and a cooling air for the inside of the light source unit. And a lamp duct for guiding light.
  • the lamp duct has a first air path for leading cooling air to the upper side of the discharge lamp in the light source section in the first position, and a second position in which the first position is reversed up and down. It has a second air passage which leads the cooling air to the upper side of the discharge lamp, and an air passage switching part which switches the air passage which introduces the cooling air.
  • the air passage switching unit closes the inlet of the second air passage in the first posture and introduces cooling air to the first air passage, and the inlet of the first air passage in the second posture. Close and introduce cooling air into the second air passage.
  • FIG. 1 is a block diagram showing an example of a configuration of a projection type video display apparatus according to Embodiment 1 of the present invention.
  • the projection type video display apparatus 1 is provided with the light source part 10, the optical unit 20, the display element 30, the projection optical system 40, and the cooling fan 50, as shown in FIG.
  • the projection type video display device 1 also has a control unit 80, a power supply unit 81, a memory 82, a non-volatile memory 83, an operation signal input unit 84, a communication unit 85, and an audio input.
  • a unit 86, an image input unit 87, an audio output unit 88, and the like are provided.
  • FIGS. 2 to 3 are diagrams showing an example of the configuration of a projection type video display apparatus according to Embodiment 1 of the present invention.
  • 2 (a) is a front view of the projection type video display 1
  • FIG. 2 (b) is a plan view of the projection type video display 1.
  • FIG. 3 (a) is a left side view of the projection type video display 1
  • FIG. 3 (b) is a right side view of the projection type video display 1.
  • FIG. 2B the approximate positions of the light source unit 10, the optical unit 20, the display device 30, the projection optical system 40, the cooling fan 50, the lamp duct 60, and the power supply unit 81 are shown by dotted lines.
  • a state in which the projection type video display device 1 is installed with the bottom surface 90d of the housing 90 down is referred to as a stationary state (first posture). That is, in the stationary state, the projection-type image display device 1 is installed with the + Z side facing upward.
  • a state in which the projection type image display device 1 is installed with the upper surface 90a of the housing 90 down is referred to as a ceiling suspension state (second posture).
  • the projection type image display apparatus 1 is used in a state of being suspended from the bottom surface 90d side by a suspending member installed on a ceiling or the like. That is, the suspended state is a state in which the vertical state in the stationary state is reversed, and in the suspended state, the projection type image display apparatus 1 is installed with the ⁇ Z side facing upward.
  • FIG. 4 is a cross-sectional view showing an example of the configuration of the light source unit according to Embodiment 1 of the present invention.
  • the light source unit 10 is disposed at the upper left portion in a plan view.
  • the light source unit 10 is provided with a discharge lamp 11 and a reflector 15 as shown in FIG.
  • the discharge lamp 11 is provided inside the reflector 15, as shown in FIG. Specifically, at least a bulb 11 a of the discharge lamp 11 is provided inside the reflector 15.
  • the discharge lamp 11 includes a bulb 11a that emits lamp light, and seal portions 11b and 11c having a wiring and the like inside.
  • the discharge lamp 11 emits light when current is supplied from the respective seal parts 11 b and 11 c.
  • the seal portion 11 b is disposed on the lamp light emission side (+ Y side) of the bulb 11 a and extends in the + Y direction.
  • the seal portion 11c is disposed on the opposite side of the seal portion 11b with the valve 11a interposed therebetween, and extends in the -Y direction.
  • the reflector 15 reflects the lamp light and emits it to the optical unit 20. For this reason, as shown in FIG. 4, the reflector 15 is open at the light emission side (+ Y side) of the lamp light. Further, as shown in FIG. 4, the reflector 15 is formed with a through hole 15a on the side ( ⁇ Y side) opposite to the lamp light emission side.
  • the discharge lamp 11 is installed on the reflector 15 in a state where the seal portion 11 c is inserted into the through hole 15 a.
  • the optical unit 20 is disposed adjacent to the light source unit 10 at the upper center in plan view.
  • the optical unit 20 is configured of, for example, one or more lenses or mirrors.
  • the optical unit 20 guides lamp light emitted from the light source unit 10 to the display element.
  • the optical unit guides the display element 30 while changing the traveling direction of the lamp light emitted from the light source unit 10 in the + Y direction to the + X direction.
  • the display element 30 is disposed between the optical unit 20 and the projection optical system 40.
  • the display element 30 is disposed on the + X side of the optical unit 20 in plan view.
  • the display element 30 is configured of, for example, a transmissive or reflective liquid crystal panel or a DMD (Digital Micromirror Device (registered trademark) panel).
  • the display element 30 displays an image projected on a screen or the like.
  • the display element 30 transmits an image to the projection optical system 40 by transmitting or reflecting the lamp light guided from the optical unit 20.
  • the projection optical system 40 is, for example, as shown in FIG. 2B, disposed on the + X side of the display element 30 in a plan view.
  • the projection optical system 40 is configured of one or more lenses or mirrors.
  • the projection optical system 40 projects an image incident from the display element 30, and enlarges and displays the image displayed on the display element 30 on a screen.
  • the cooling fan 50 is disposed, for example, in the lower right area of the light source unit 10 as shown in FIG. 2B. Further, as shown in FIG. 2B, for example, the cooling fan 50 is disposed extending from the lower right to the upper left. The cooling fan 50 supplies cooling air for cooling the discharge lamp 11 through the lamp duct 60.
  • FIG. 5 to 6 are main-portion cross-sectional views showing an example of the configuration around the lamp duct according to Embodiment 1 of the present invention.
  • the light source unit 10 and the cooling fan 50 disposed adjacent to the lamp duct 60 are also shown in FIG. 5.
  • FIG. 5 is a view from approximately the + X side, and mainly shows a cross-sectional view of the lamp duct 60 between the light source unit 10 and the cooling fan 50.
  • FIG. 6 is a view approximately from the ⁇ X side, and mainly shows a cross-sectional view of the lamp duct 60 and the lamp shade 70 in the vicinity of the light source unit 10.
  • the lamp duct 60 is disposed, for example, between the light source unit 10 and the cooling fan 50 as shown in FIGS. 2 and 5. In the vicinity of the light source unit 10, for example, as shown in FIGS. 5 and 6, the lamp duct 60 is disposed so as to surround the lamp shade 70 from the cooling fan 50 side (+ X side).
  • the lamp duct 60 includes a first air passage 61, a second air passage 62, a third air passage 63, and an air passage switching unit 65.
  • the inlet 61a of the first air path 61, the third air path The 63 inlets 63 a and the inlets 62 a of the second air passage 62 are sequentially arranged.
  • the first air passage 61 extends to a region adjacent to the lamp shade 70 at the upper side (+ Z side). In the stationary state, the first air passage 61 leads the cooling air supplied from the cooling fan 50 to a region (+ Z side) above the discharge lamp 11 inside the light source unit 10.
  • the second air passage 62 extends to a region adjacent to the lamp shade 70 at the lower side ( ⁇ Z side) in the stationary state.
  • the second air passage 62 guides the cooling air supplied from the cooling fan 50 to a region above the discharge lamp 11 ( ⁇ Z side) inside the light source unit 10 in the ceiling-suspended state.
  • the third air passage 63 extends to a region adjacent to the lampshade 70 on the side (+ X side).
  • the third air passage 63 guides the cooling air supplied from the cooling fan 50 toward the seal portion 11 b of the discharge lamp 11 inside the light source unit 10.
  • the air passages 61, 62, 63 of the lamp duct 60 guide the cooling air supplied from the cooling fan 50 to the inside of the light source unit 10.
  • the outlet 61b of the first air passage 61 is disposed in a region adjacent to the lampshade 70 at the upper side (+ Z side). Further, the outlet 62b of the second air passage 62 is disposed in a region adjacent to the lamp shade 70 at the lower side ( ⁇ Z side) in the stationary state.
  • FIG. 7 is an enlarged view of the vicinity of the inlet of the air passage according to Embodiment 1 of the present invention.
  • Fig.7 (a) is sectional drawing of the inlet-port vicinity of an air path
  • FIG.7 (b) is a figure of the inlet-port vicinity of the air path seen from the upstream.
  • the air passage switching unit 65 is disposed in the vicinity of the inlets 61a to 63a of the air passages 61 to 63, as shown in FIGS. 7 (a) and 7 (b).
  • one end of the air passage switching unit 65 is disposed near the inlet 63 a of the third air passage 63, and the other end of the air passage switching unit 65 is an inlet of the first air passage 61. It is disposed upstream of the inlet port 62 a of the second air passage 62 and the inlet port 63 a of the third air passage 63.
  • one end of the air passage switching portion 65 has projections 65a and 65b which respectively project to the wall portions 60a and 60b of the lamp duct 60.
  • the air passage switching unit 65 is attached to the lamp duct 60 so as to be rotatable in the vertical direction (Z direction) via the projections 65 a and 65 b.
  • a notch 66 for introducing the cooling air to the inlet 63a of the third air passage 63. is formed.
  • the air passage switching unit 65 is formed of, for example, stainless steel.
  • the air path switching unit 65 switches the arrangement between the stationary state and the suspended state.
  • the stationary state the other end of the air path switching unit 65 is disposed, for example, at the position P1 shown in FIG.
  • the other end of the air path switching unit 65 falls from the position P1 shown in FIG. 5 to the position P2 by its own weight.
  • the arrangement of the air passage switching unit 65 is switched.
  • the air passage switching unit 65 closes the inlet 62 a of the second air passage 62 as shown in FIGS. 5, 7 (a) and 7 (b), and the first air passage 61. And introduce the cooling air into the third air passage 63.
  • the air passage switching unit 65 closes the inlet 61 a of the first air passage 61 as shown in FIG. 5, and the second air passage 62 and the third air passage 63.
  • the air path switching unit 65 switches the air path for introducing the cooling air in accordance with the attitude of the projection type image display device 1.
  • the air passage switching portion 65 has a length from one end to the other end, for example, the width in the vertical direction (Z direction) of the inlet 61 a of the first air passage 61 and the third air passage 63.
  • the total length of the inlet port 63a and the width in the vertical direction (Z direction) of the inlet port 63a is larger than the total length.
  • the air passage switching unit 65 has a width in the vertical direction (Z direction) of the inlet 62 a of the second air passage 62 and a width in the vertical direction (Z direction) of the inlet 63 a of the third air passage 63. It is configured to be larger than the total length.
  • the lampshade 70 is disposed adjacent to the light source unit 10 on the light emission side (+ Y side) of the lamp light, as shown in FIGS. 5 and 6. Further, the lampshade 70 is disposed adjacent to the optical unit 20 as well.
  • the lampshade 70 is a member provided to suppress light leakage of lamp light emitted from the light source unit 10 to the optical unit 20 and to promote heat dissipation from the light source unit 10.
  • the lampshade 70 includes a first wind direction adjusting unit 71 and a second wind direction adjusting unit 72.
  • the first wind direction adjusting unit 71 is disposed at the top (+ Z side) in the stationary state.
  • the first wind direction adjustment unit 71 includes a first wind direction changing surface 71 a and a first wind direction stable surface 71 b.
  • the first wind direction changing surface 71 a changes the wind direction of the cooling air derived from the outlet 61 b of the first air passage 61 in the direction along the reflecting surface 15 b of the reflector 15.
  • the first wind direction stable surface 71 b is disposed substantially in parallel with the reflecting surface 15 b of the reflector 15 in a region adjacent to the first wind direction adjusting unit 71.
  • the first wind direction stable surface 71 b is a surface that stabilizes the wind direction of the cooling air changed in the first wind direction changing surface 71 a.
  • the first wind direction adjusting unit 71 adjusts the wind direction of the cooling air drawn from the outlet 61 b of the first air passage 61 in the direction along the reflection surface 15 b of the reflector 15.
  • the second wind direction adjusting unit 72 is disposed at the lower portion ( ⁇ Z side) in the stationary state.
  • the second wind direction adjustment unit 72 includes a second wind direction changing surface 72a and a second wind direction stable surface 72b.
  • the second wind direction changing surface 72 a changes the wind direction of the cooling air derived from the outlet 62 b of the second air passage 62 in the direction along the reflecting surface 15 b of the reflector 15.
  • the second wind direction stable surface 72 b is disposed substantially in parallel with the reflecting surface 15 b of the reflector 15 in a region adjacent to the second wind direction adjusting unit 72.
  • the second wind direction stable surface 72 b is a surface that stabilizes the wind direction of the cooling air changed in the second wind direction changing surface 72 a.
  • the second wind direction adjusting unit 72 adjusts the wind direction of the cooling air drawn from the outlet 62 b of the second air path 62 in the direction along the reflection surface 15 b of the reflector 15.
  • the lampshade 70 has openings 73, 75.
  • the opening 73 is formed at a position (+ X side) corresponding to the outlet 63 b of the third air passage 63, as shown in FIG. 6.
  • the opening 75 is formed on the opposite side ( ⁇ X side) of the opening 73 to a position corresponding to the exhaust port of an exhaust duct (not shown).
  • the lampshade 70, the first wind direction adjusting unit 71, and the second wind direction adjusting unit 72 are made of, for example, aluminum. Moreover, the lampshade 70, the first wind direction adjusting unit 71, and the second wind direction adjusting unit 72 may be integrally configured.
  • the power supply unit 81 is disposed in the lower left area in the drawing.
  • the power supply unit 81 supplies the power input from an external power supply (not shown) to each unit of the projection display apparatus 1.
  • the memory 82 is configured of, for example, a volatile memory such as a dynamic random access memory (DRAM).
  • DRAM dynamic random access memory
  • the memory 82 develops and holds the control program of the projection type video display device 1 stored in the non-volatile memory 83. Further, the memory 82 holds various data for control program execution. In addition, the memory 82 buffers video data, audio data, and the like input via the video input unit 87 and the audio input unit 86.
  • the nonvolatile memory 83 is configured of, for example, nonvolatile memory such as flash memory.
  • the non-volatile memory 83 stores a control program of the projection type video display device 1, various data for executing the control program, and the like.
  • the operation signal input unit 84 is provided on the upper surface 90 a of the housing 90 as shown in FIG.
  • the operation signal input unit 84 is provided with, for example, one or more operation buttons.
  • the operation signal input unit 84 outputs an operation signal corresponding to the content of the operation to the control unit 80.
  • the control unit 80 executes the processing based on the operation signal
  • the projection type video display device 1 executes various processing according to the content of the operation.
  • the projection type video display device 1 may include, for example, a receiving unit (not shown), and the receiving unit may receive the operation signal transmitted from the remote controller and output the received operation signal to the control unit 80.
  • the communication unit 85 performs wireless communication with an information processing terminal such as a PC (not shown), a tablet terminal, or a smartphone.
  • the communication unit 85 transmits and receives various data such as video data and audio data to and from, for example, an information processing terminal.
  • the voice input unit 86 is connected to the information processing terminal via, for example, a voice input terminal (not shown).
  • the voice input unit 86 inputs and outputs voice data and the like to and from the information processing terminal.
  • the video input unit 87 is connected to the information processing terminal via, for example, a video input terminal (not shown).
  • the video input unit 87 inputs and outputs video data and the like to and from the information processing terminal.
  • the audio input unit 86 and the video input unit 87 may be integrally configured.
  • the audio input unit 86 and the video input unit 87 may be configured by, for example, a High-Definition Multimedia Interface (HDMI), a Video Graphics Array (VGA), a Digital Visual Interface (DVI), or the like.
  • HDMI High-Definition Multimedia Interface
  • VGA Video Graphics Array
  • DVI Digital Visual Interface
  • the audio output unit 88 includes, for example, a speaker 88a shown in FIG. 2A, an external output terminal, and the like.
  • the audio output unit 88 outputs an audio related to a video displayed on a screen or the like, an operation sound of the projection type video display device 1, a notification sound or warning sound regarding an error, or audio data of these.
  • the display element drive unit 89 causes the display element 30 to display a predetermined image based on the image data supplied from the control unit 80.
  • the control unit 80 is configured of, for example, a CPU (Central Processing Unit) or the like.
  • the control unit 80 executes and operates, for example, a control program of the projection type video display device 1. Further, for example, the control unit 80 supplies video data to the display element driving unit 89, and supplies audio data corresponding to the video data to the audio output unit 88. At this time, the control unit 80 may supply the video data and audio data input to the video input unit 87, the audio input unit 86, and the communication unit 85. For example, the video data stored in the non-volatile memory 83 And audio data may be provided.
  • a CPU Central Processing Unit
  • control unit 80 adjusts the volume of the cooling air supplied from the cooling fan 50 based on, for example, the lamp temperature of the discharge lamp 11 measured by a lamp temperature measurement unit (not shown). For example, the control unit 80 compares the measured lamp temperature with a preset temperature set in advance. When the measured lamp temperature is higher than the set temperature, the control unit 80 controls the cooling fan 50 so that the volume of the cooling air becomes large.
  • control unit 80 may control the cooling fan 50 so that the volume of the cooling air decreases. This is because the amount of light of the lamp light may greatly fluctuate depending on the temperature of the discharge lamp 11.
  • the set temperature may be set within the range of the allowable minimum temperature and the allowable maximum temperature. That is, when the measured lamp temperature is higher than the allowable minimum temperature, the control unit 80 controls the cooling fan 50 to increase the volume of the cooling air, and when the measured lamp temperature is lower than the allowable minimum temperature, the cooling is performed. The cooling fan 50 is controlled to reduce the volume of the wind.
  • the dustproof filter 91 is installed on the left side 90b of the housing 90, as shown in FIG. 3A, for example. Further, the dustproof filter 92 is installed on the right side surface 90c of the housing 90 as shown in FIG. 3B, for example.
  • the dustproof filters 91 and 92 suppress dust and dirt from entering the inside of the housing 90. Thereby, the approach of the impurity to the inside of the housing
  • FIG. 8 is a view showing the flow of cooling air in the lamp duct in the stationary state.
  • FIG. 9 is a diagram showing the details of the flow of cooling air in the lampshade and the light source unit in the stationary state.
  • the other end of the air passage switching unit 65 is disposed at P1, and the inlet 62a of the second air passage 62 is closed.
  • the cooling air introduced into the first air passage 61 is, as shown in FIG. 9, derived from the outlet 61 b toward the first air direction adjusting unit 71.
  • the wind direction of the cooling air derived from the outlet 61 b is changed in the direction ( ⁇ Y direction) of the light source unit 10 by the first wind direction changing surface 71 a as shown in FIG. Then, the cooling air is supplied to the inside of the light source unit 10 along the reflection surface 15 b of the reflector 15 through the first wind direction stable surface 71 b.
  • the cooling air supplied to the inside of the light source unit 10 mainly moves toward the bulb 11a and the seal portion 11c along the reflection surface 15b of the reflector 15, as shown in FIG.
  • the cooling air used to cool the discharge lamp 11 is exhausted to the outside through the opening 75 and the exhaust duct (not shown) shown in FIG.
  • the cooling air introduced into the third air passage 63 is mainly supplied toward the seal portion 11 b of the discharge lamp 11 as shown in FIGS. 8 and 9.
  • the cooling air used to cool the seal portion 11b is exhausted to the outside through the opening 75 and the exhaust duct (not shown) shown in FIG.
  • FIG. 10 is a diagram showing the flow of the cooling air in the lamp duct in the ceiling suspended state.
  • FIG. 11 is a diagram showing the details of the flow of cooling air in the lampshade and the light source unit in the ceiling suspended state. In FIG. 10 and FIG. 11, each part is not displayed in reverse, and the difference in the flow of the cooling air in the stationary state and the ceiling suspended state is clearly shown.
  • the other end of the air passage switching portion 65 is disposed at P2, and the inlet 61a of the first air passage 61 is closed.
  • the cooling air introduced into the second air passage 62 is, as shown in FIG. 11, derived from the outlet 62 b toward the second air direction adjusting unit 72.
  • the wind direction of the cooling air derived from the outlet 62b is changed in the direction (-Y direction) of the light source unit 10 by the second wind direction changing surface 72a, as shown in FIG. Then, the cooling air is supplied to the inside of the light source unit 10 along the reflection surface 15 b of the reflector 15 via the second air flow direction stable surface 72 b.
  • the cooling air supplied to the inside of the light source unit 10 mainly moves toward the bulb 11a and the seal portion 11c along the reflection surface 15b of the reflector 15, as shown in FIG.
  • the cooling air used to cool the discharge lamp 11 is exhausted to the outside through the opening 75 and the exhaust duct (not shown) shown in FIG.
  • the flow of the cooling air introduced into the third air passage 63 is the same as that in the stationary state, and thus the description thereof is omitted.
  • the air passage switching unit 65 closes the introduction port 62a of the second air passage 62 in the stationary state and causes the cooling air to be introduced into the first air passage 61, and is in the ceiling suspended state.
  • the inlet 61 a of the first air passage 61 is closed, and cooling air is introduced into the second air passage 62.
  • the lamp duct 60 is configured to provide the third air passage 63 for guiding the cooling air toward the seal portion 11 b of the discharge lamp 11 disposed on the lamp light emission side (+ Y side). Have. According to this configuration, since the seal portion 11 b is directly cooled by the cooling air, the cooling capacity of the discharge lamp 11 by the cooling fan 50 can be further improved.
  • the lamp duct 60 in the stationary state, is configured such that the inlet 61 a of the first air passage 61 and the third air passage 61 extend from the upper side (+ Z side) to the lower side ( ⁇ Z side).
  • the inlet 63 a of the air passage 63 and the inlet 62 a of the second air passage 62 are sequentially arranged. According to this configuration, since a plurality of air passages are stacked in the vicinity of the inlet, an increase in the width of the lamp duct 60 in plan view can be suppressed.
  • one end of the air passage switching unit 65 is attached to the lamp duct 60 so as to be rotatable in the vertical direction (Z direction). According to this configuration, when the posture of the projection type image display device 1 is switched between the stationary state and the ceiling suspended state, the other end of the air path switching unit 65 moves from the top to the bottom by its own weight. Thus, the air passage switching unit 65 can appropriately switch the introduction port to be closed.
  • the notch portion 66 for introducing the cooling air to the inlet 63a of the third air passage is formed at one end of the air passage switching portion 65. According to this configuration, even if the inlet 61a of the first air passage 61 or the inlet 62a of the second air passage 62 is blocked, the cooling air can be introduced into the third air passage 63. Become. Moreover, since it is not necessary to cross each air path by this, the increase in the width
  • the air passage switching portion 65 has a length from one end to the other end in the vertical direction (Z direction) of the inlet 61 a of the first air passage 61.
  • the total length of the width and the width in the vertical direction (Z direction) of the inlet 63 a of the third air passage 63 is larger than the total length.
  • the air passage switching unit 65 has a width in the vertical direction (Z direction) of the inlet 62 a of the second air passage 62 and a width in the vertical direction (Z direction) of the inlet 63 a of the third air passage 63. It is configured to be larger than the total length.
  • the other end of the air path switching portion 65 is disposed on the upstream side of the air path than the one end.
  • the Rukoto As a result, when the projection type image display device 1 changes the posture, the air path switching unit 65 can be easily rotated, so that the air path can be easily switched.
  • the air passage switching unit 65 is formed of stainless steel. According to this configuration, since it is easy to obtain the material of the air passage switching unit 65, the cost required for the air passage switching unit 65 can be reduced.
  • the lamp shade 70 adjusts the wind direction of the cooling air drawn from the outlet 61 b of the first air passage 61 in the direction along the reflection surface 15 b of the reflector 15.
  • the cooling air can be easily made to follow the reflection surface 15 b of the reflector 15.
  • the cooling air can be applied to the valve 11a with high accuracy, and the cooling capacity of the discharge lamp 11 by the cooling fan 50 can be further improved.
  • the generation of the turbulent flow of the cooling air inside the light source unit 10 is suppressed, it is possible to further improve the cooling capacity of the discharge lamp 11 by the cooling fan 50.
  • the first wind direction adjusting unit 71 changes the wind direction of the cooling air drawn from the outlet 61 b of the first air passage 61 in the direction along the reflection surface 15 b of the reflector 15.
  • the first wind direction changing surface 71a and the wind direction of the cooling air which is arranged substantially parallel to the reflecting surface 15b of the reflector 15 in the area adjacent to the first wind direction adjusting unit 71, and changed in the first wind direction changing surface 71a And the first wind direction stable surface 71b.
  • the cooling air can be applied to the valve 11a more accurately, and the cooling capacity of the discharge lamp 11 by the cooling fan 50 can be further improved. It becomes. Further, the generation of the turbulent flow of the cooling air inside the light source unit 10 is further suppressed, and the cooling capability of the discharge lamp 11 by the cooling fan 50 can be further improved.
  • the second wind direction adjustment unit 72 changes the wind direction of the cooling air drawn from the outlet 62 b of the second air path 62 to a direction along the reflection surface 15 b of the reflector 15.
  • the second change surface 72a is disposed substantially parallel to the reflection surface 15b of the reflector 15 in the area adjacent to the second wind direction adjustment unit 72, and the second change of the second wind direction change surface 72a stabilizes the wind direction of the cooling air And the wind direction stable surface 72b of According to this configuration, since the direction of the cooling air can be further stabilized, the cooling air can be applied to the valve 11a more accurately, and the cooling capacity of the discharge lamp 11 by the cooling fan 50 can be further improved. It becomes. Further, the generation of the turbulent flow of the cooling air inside the light source unit 10 is further suppressed, and the cooling capability of the discharge lamp 11 by the cooling fan 50 can be further improved.
  • the first wind direction adjusting unit 71 and the second wind direction adjusting unit 72 are configured integrally with the lamp shade 70. According to this configuration, it is possible to omit the steps required for manufacturing and mounting the first wind direction adjusting unit 71 and the second wind direction adjusting unit 72. Therefore, the lamp shade 70, the first wind direction adjusting unit 71, and the second It is possible to reduce the manufacturing cost of the wind direction adjustment unit 72 of
  • the lampshade 70, the first wind direction adjusting unit 71, and the second wind direction adjusting unit 72 are formed of aluminum. According to this configuration, the heat dissipation in the lamp shade 70, the first wind direction adjusting unit 71, and the second wind direction adjusting unit 72 is promoted, so the cooling of the discharge lamp 11 is further promoted.
  • FIG. 12 is an enlarged view of the vicinity of the inlet of the air passage according to Embodiment 2 of the present invention.
  • FIG. 12A is an enlarged view of the vicinity of the inlet of the air passage in the stationary state.
  • FIG. 12 (b) is an enlarged view of the vicinity of the inlet of the air passage in the ceiling suspended state.
  • 12 (a) and 12 (b) show the vicinity of the inlet as viewed from the upstream side of the air passage. Note that FIG. 12 (b) is shown in a state in which the upside down is not reversed in order to clarify the difference from FIG. 12 (a). That is, in FIG. 12B, the upper side in the figure is the lower side of the projection type video display device 1, and the lower side in the figure is the upper side of the projection type video display device 1.
  • the projection type image display apparatus 1 has a configuration in which the lamp duct 60 in the first embodiment is replaced with a lamp duct 160 described below. Therefore, the upstream side of the lamp duct 160 is connected to the cooling fan 50. Further, the downstream side of the lamp duct 160 is disposed on the lamp shade 70 side.
  • the inlet 161a of the first air passage 161 In the stationary state, as shown in FIG. 12A, in the lamp duct 160, the inlet 161a of the first air passage 161, the second, from the upper side (+ Z side) to the lower side ( ⁇ Z side).
  • the inlets 162a of the air passage 162 are sequentially arranged.
  • the inlet 163 a of the third air passage 163 is disposed on the side of the inlet 161 a of the first air passage 161 and the inlet 162 a of the second air passage 162.
  • the inlet 163 a of the third air passage 163 is viewed from the side (for example, the Y direction), and the inlet 161 a of the first air passage 161 and the inlet 162 a of the second air passage 162.
  • the third air passage 163 is not limited to such a configuration.
  • the third air passage 163 is, for example, a side of the first air passage 161 and the second air passage 162. Is formed. Then, in the area where the first air passage 161 and the second air passage 162 are disposed apart from each other, the third air passage 163 is, for example, of the first air passage 161 and the second air passage 162. It is formed from the side across the area between the first air passage 161 and the second air passage 162.
  • One end of the air passage switching unit 165 is disposed between the inlet 161 a of the first air passage 161 and the inlet 162 a of the second air passage 162, as shown in FIG. 12.
  • the air passage switching unit 165 is rotatably attached to the lamp duct 160 in the vertical direction (Z direction) via the protrusions 165a and 165b.
  • the other end of the air passage switching portion 165 is disposed upstream of the inlet 161 a of the first air passage 161 and the inlet 162 a of the second air passage 162.
  • the other end of the air path switching unit 165 falls to the ⁇ Z side as shown in FIG. 12A, and the inlet 162 a of the second air path 162 is closed.
  • the other end of the air passage switching portion 165 falls to the + Z side as shown in FIG. 12B, and the inlet 161a of the first air passage 161 is blocked. .
  • the air passage switching portion 165 is configured such that the length from one end to the other end is larger than the width in the vertical direction (Z direction) of the inlet 161 a of the first air passage 161. There is. Further, the air passage switching portion 165 is configured such that the length from one end to the other end is larger than the width in the vertical direction (Z direction) of the inlet 162 a of the second air passage 162. It is done.
  • the lamp duct 160 receives the inlet 161a of the first air passage 161 and the second wind from the upper side (+ Z side) to the lower side ( ⁇ Z side).
  • the inlets 162a of the passage 162 are sequentially arranged.
  • the inlet 163 a of the third air passage 163 is disposed on the side of the inlet 161 a of the first air passage 161 and the inlet 162 a of the second air passage 162.
  • the structure of the air passage switching portion 165 can be simplified.
  • the first air passage 161 and the second air passage 162 are disposed adjacent to each other, the length from one end of the air passage switching portion 165 to the other end can be shortened. Become.
  • the air passage switching portion 165 has a length from one end to the other end in the vertical direction (Z direction) of the inlet 161 a of the first air passage 161. It is configured to be larger than the width. Further, the air passage switching portion 165 is configured such that the length from one end to the other end is larger than the width in the vertical direction (Z direction) of the inlet 162 a of the second air passage 162. It is done.
  • the other end of the air path switching unit 165 is disposed on the upstream side of the air path rather than the one end.
  • the Rukoto As a result, when the projection type image display device 1 changes the posture, the air path switching unit 165 can be easily rotated, so that the air path can be easily switched.
  • the present invention is not limited to the above-described embodiment, but includes various modifications. Further, for example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to one having all the described configurations.
  • part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. .
  • the respective members and relative sizes described in the drawings are simplified and idealized in order to explain the present invention in an easy-to-understand manner, and may have a more complicated shape in mounting.
  • SYMBOLS 1 Projection type video display apparatus, 10 ... Light source part, 11 ... Discharge lamp, 20 ... Optical unit, 30 ... Display element, 40 ... Projection optical system, 50 ... Cooling fan, 60 ... Lamp duct, 61 ... 1st wind Road 62: second air path 63: third air path 61a, 62a, 63a: introduction port 61b, 62b, 63b: outlet port 65: air path switching portion 70: lamp shade 71: First wind direction adjusting unit, 72: second air direction adjusting unit, 160: lamp duct, 161: first air path, 162: second air path, 163: third air path, 161a, 162a, 163a ... Introduction port, 165 ... Air path switching part

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  • General Physics & Mathematics (AREA)
  • Projection Apparatus (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

This projection-type image display device is provided with: a light source part (10) that includes a discharge lamp for emitting lamp light; a cooling fan (50) that supplies cooling air for cooling the discharge lamp; and a lamp duct (60) that guides the cooling air inside the light source part. The lamp duct (60) has a first air path (61) through which the cooling air is guided out above the discharge lamp inside the light source part (10) when the lamp duct (60) is in a first position, a second air path (62) through which the cooling air is guided out above the discharge lamp when the lamp duct (60) is in a second position which is upside down of the first position, and an air path switching part (65) that performs switching between the air paths for introducing the cooling air. The air path switching part (65) introduces the cooling air through the first air path (61) by blocking an inlet (62a) of the second air path in said first position, and introduces the cooling air through the second air path (62) by blocking an inlet (61a) of the first air path in said second position.

Description

投射型映像表示装置Projection type video display
　本発明は、投射型映像表示装置に関する。 The present invention relates to a projection type video display.
　スクリーン等に映像を投射する投射型映像表示装置（プロジェクター）には、放電ランプ等が光源として用いられている。また、使用中の放電ランプは高温になるため、投射型映像表示装置には、放電ランプの冷却用ファンが設けられている。これにより、放電ランプの温度上昇が抑制される。 A discharge lamp or the like is used as a light source in a projection type image display apparatus (projector) which projects an image on a screen or the like. Further, since the discharge lamp in use becomes high temperature, the projection type image display apparatus is provided with a cooling fan for the discharge lamp. Thereby, the temperature rise of the discharge lamp is suppressed.
　例えば、特許文献１では、発光管の冷却効率を向上できるプロジェクターが開示されている。 For example, Patent Document 1 discloses a projector capable of improving the cooling efficiency of a light emitting tube.
　特許文献１によれば、光源装置は、光束を射出する発光部を有する発光管、発光管を固定して光束を被照明領域側に向けて反射させるリフレクターと、リフレクターを収容することにより、発光管を冷却する冷却風を流動させる空間領域を形成するハウジングと、を備え、ハウジングは、空間領域内に冷却風を吐出する３つの吐出口（第１吐出口、第２吐出口、第３吐出口）を有し、第１吐出口の中心は、光軸と略一致するように設置され、第２吐出口、第３吐出口は第１吐出口の両側にそれぞれ並設されている。そして、それぞれの吐出口から冷却風が吐出されることにより、発光部の冷却が行われる。 According to Patent Document 1, the light source device emits light by containing a light emitting tube having a light emitting portion that emits a light flux, a reflector that fixes the light emitting tube and reflects the light flux toward the illuminated area side, and a reflector. A housing for forming a space area for flowing cooling air for cooling the pipe; the housing includes three discharge ports (a first discharge port, a second discharge port, a third discharge port for discharging the cooling air into the space area) The center of the first discharge port is disposed so as to substantially coincide with the optical axis, and the second and third discharge ports are provided in parallel on both sides of the first discharge port. Then, the cooling air is discharged from the respective discharge ports, whereby the light emitting unit is cooled.
特開２０１３－１５６５５号公報JP, 2013-15655, A
　特許文献１に示すプロジェクターでは、発光部に対し、３つの吐出口から冷却風が吐出される。すなわち、冷却風は３つの異なる方向から発光部へ吐出される。しかし、この場合、空間領域における冷却風の流れが複雑になるため、発光部を冷却した後の高温状態の冷却風が、効率的に外部へ排気されなくなる。そうすると、冷却風による発光部の冷却能力が低下する。 In the projector disclosed in Patent Document 1, cooling air is discharged from the three discharge ports to the light emitting unit. That is, the cooling air is discharged to the light emitting unit from three different directions. However, in this case, since the flow of the cooling air in the space area becomes complicated, the high temperature cooling air after cooling the light emitting unit is not efficiently exhausted to the outside. Then, the cooling capacity of the light emitting unit by the cooling air is reduced.
　そこで、本発明は、放電ランプの冷却能力を向上させた投射型映像表示装置を提供することを目的とする。 Then, this invention aims at providing the projection type video display apparatus which improved the cooling capability of the discharge lamp.
　本願において開示される発明のうち、代表的なものの概要を簡単に説明すれば、以下のとおりである。 The outline of typical ones of the inventions disclosed in the present application will be briefly described as follows.
　本発明の代表的な実施の形態による投射型映像表示装置は、ランプ光を発する放電ランプを内部に有する光源部と、放電ランプの冷却風を供給する冷却ファンと、冷却風を光源部の内部へ誘導するランプダクトと、を備えている。ランプダクトは、第１の姿勢のとき、光源部の内部における放電ランプの上方へ冷却風を導出する第１の風路と、第１の姿勢の上下を反転させた第２の姿勢のとき、放電ランプの上方へ冷却風を導出する第２の風路と、冷却風を導入する風路を切り換える風路切換部と、を有している。風路切換部は、第１の姿勢のとき第２の風路の導入口を塞ぎ、第１の風路へ冷却風を導入させ、第２の姿勢のとき第１の風路の導入口を塞ぎ、第２の風路へ冷却風を導入させる。 A projection type image display apparatus according to a typical embodiment of the present invention includes a light source unit having a discharge lamp for emitting lamp light, a cooling fan for supplying cooling air for the discharge lamp, and a cooling air for the inside of the light source unit. And a lamp duct for guiding light. The lamp duct has a first air path for leading cooling air to the upper side of the discharge lamp in the light source section in the first position, and a second position in which the first position is reversed up and down. It has a second air passage which leads the cooling air to the upper side of the discharge lamp, and an air passage switching part which switches the air passage which introduces the cooling air. The air passage switching unit closes the inlet of the second air passage in the first posture and introduces cooling air to the first air passage, and the inlet of the first air passage in the second posture. Close and introduce cooling air into the second air passage.
　本願において開示される発明のうち、代表的なものによって得られる効果を簡単に説明すれば以下のとおりである。 The effects obtained by typical ones of the inventions disclosed in the present application will be briefly described as follows.
　すなわち、本発明の代表的な実施の形態によれば、放電ランプの冷却能力を向上させることが可能となる。 That is, according to the representative embodiment of the present invention, it is possible to improve the cooling capacity of the discharge lamp.
本発明の実施の形態１に係る投射型映像表示装置の構成の一例を示すブロック図である。It is a block diagram which shows an example of a structure of the projection type video display apparatus concerning Embodiment 1 of this invention. 本発明の実施の形態１に係る投射型映像表示装置の構成の一例を示す図である。It is a figure which shows an example of a structure of the projection type video display apparatus concerning Embodiment 1 of this invention. 本発明の実施の形態１に係る投射型映像表示装置の構成の一例を示す図である。It is a figure which shows an example of a structure of the projection type video display apparatus concerning Embodiment 1 of this invention. 本発明の実施の形態１に係る光源部の構成の一例を示す断面図である。It is sectional drawing which shows an example of a structure of the light source part which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係るランプダクト周辺の構成の一例を示す要部断面図である。It is principal part sectional drawing which shows an example of a structure of lamp | ramp duct periphery which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係るランプダクト周辺の構成の一例を示す要部断面図である。It is principal part sectional drawing which shows an example of a structure of lamp | ramp duct periphery which concerns on Embodiment 1 of this invention. 本発明の実施の形態１に係る風路の導入口付近の拡大図である。It is an enlarged view of inlet part vicinity of the air path which concerns on Embodiment 1 of this invention. 据置状態のとき、ランプダクトにおける冷却風の流れを示す図である。It is a figure which shows the flow of the cooling air in a lamp duct at the time of a stationary state. 据置状態のとき、ランプシェード及び光源部における冷却風の流れの詳細を示す図である。It is a figure which shows the detail of the flow of the cooling air in a lampshade and a light source part at the time of a stationary state. 天吊り状態のとき、ランプダクトにおける冷却風の流れを示す図である。It is a figure which shows the flow of the cooling air in a lamp duct at the time of a ceiling suspension state. 天吊り状態のとき、ランプシェード及び光源部における冷却風の流れの詳細を示す図である。It is a figure which shows the detail of the flow of the cooling air in a lampshade and a light source part at the time of a ceiling suspension state. 本発明の実施の形態２に係る風路の導入口付近の拡大図である。It is an enlarged view of inlet part vicinity of the air path which concerns on Embodiment 2 of this invention.
　以下、本発明の実施の形態を図面に基づいて詳細に説明する。なお、実施の形態を説明するための全ての図において、同一部には原則として同一の符号を付し、その繰り返しの説明は省略する。 Hereinafter, embodiments of the present invention will be described in detail based on the drawings. In all the drawings for describing the embodiments, the same reference numeral is attached to the same part in principle, and the repetitive description thereof will be omitted.
　（実施の形態１）
　＜投射型映像表示装置の構成＞
　図１は、本発明の実施の形態１に係る投射型映像表示装置の構成の一例を示すブロック図である。投射型映像表示装置１は、図１に示すように、光源部１０、光学ユニット２０、表示素子３０、投射光学系４０、冷却ファン５０を備えている。また、投射型映像表示装置１は、図１に示すように、これら以外にも、制御部８０、電源部８１、メモリ８２、不揮発性メモリ８３、操作信号入力部８４、通信部８５、音声入力部８６、映像入力部８７、音声出力部８８等を備えている。 Embodiment 1
<Structure of Projection Display>
FIG. 1 is a block diagram showing an example of a configuration of a projection type video display apparatus according to Embodiment 1 of the present invention. The projection type video display apparatus 1 is provided with the light source part 10, the optical unit 20, the display element 30, the projection optical system 40, and the cooling fan 50, as shown in FIG. In addition, as shown in FIG. 1, the projection type video display device 1 also has a control unit 80, a power supply unit 81, a memory 82, a non-volatile memory 83, an operation signal input unit 84, a communication unit 85, and an audio input. A unit 86, an image input unit 87, an audio output unit 88, and the like are provided.
　図２～図３は、本発明の実施の形態１に係る投射型映像表示装置の構成の一例を示す図である。図２（ａ）は投射型映像表示装置１の正面図、図２（ｂ）は投射型映像表示装置１の平面図をそれぞれ示している。図３（ａ）は投射型映像表示装置１の左側面図、図３（ｂ）は投射型映像表示装置１の右側面図をそれぞれ示している。図２（ｂ）には、光源部１０、光学ユニット２０、表示素子３０、投射光学系４０、冷却ファン５０、ランプダクト６０及び電源部８１のおおよその位置が点線で示されている。 FIGS. 2 to 3 are diagrams showing an example of the configuration of a projection type video display apparatus according to Embodiment 1 of the present invention. 2 (a) is a front view of the projection type video display 1, and FIG. 2 (b) is a plan view of the projection type video display 1. As shown in FIG. 3 (a) is a left side view of the projection type video display 1, and FIG. 3 (b) is a right side view of the projection type video display 1. As shown in FIG. In FIG. 2B, the approximate positions of the light source unit 10, the optical unit 20, the display device 30, the projection optical system 40, the cooling fan 50, the lamp duct 60, and the power supply unit 81 are shown by dotted lines.
　なお、投射型映像表示装置１が筐体９０の底面９０ｄを下側にして設置されている状態を、据置状態（第１の姿勢）と呼ぶ。すなわち、据置状態では、投射型映像表示装置１は、＋Ｚ側を上方に向けて設置される。 A state in which the projection type video display device 1 is installed with the bottom surface 90d of the housing 90 down is referred to as a stationary state (first posture). That is, in the stationary state, the projection-type image display device 1 is installed with the + Z side facing upward.
　これに対し、投射型映像表示装置１が筐体９０の上面９０ａを下側にして設置されている状態を、天吊り状態（第２の姿勢）と呼ぶ。天吊り状態では、投射型映像表示装置１は、天井等に設置された吊り下げ部材により底面９０ｄ側から吊り下げられた状態で使用される。すなわち、天吊り状態は、据置状態における上下を反転させた状態であり、天吊り状態では、投射型映像表示装置１は、－Ｚ側を上方に向けて設置される。 On the other hand, a state in which the projection type image display device 1 is installed with the upper surface 90a of the housing 90 down is referred to as a ceiling suspension state (second posture). In the ceiling-mounted state, the projection type image display apparatus 1 is used in a state of being suspended from the bottom surface 90d side by a suspending member installed on a ceiling or the like. That is, the suspended state is a state in which the vertical state in the stationary state is reversed, and in the suspended state, the projection type image display apparatus 1 is installed with the −Z side facing upward.
　図４は、本発明の実施の形態１に係る光源部の構成の一例を示す断面図である。光源部１０は、例えば図２（ｂ）に示すように、平面視で左上部に配置されている。光源部１０は、図４に示すように、放電ランプ１１、リフレクター１５を備えている。放電ランプ１１は、図４に示すように、リフレクター１５の内部に設けられている。詳しくは、少なくとも放電ランプ１１のバルブ１１ａが、リフレクター１５の内部に設けられている。 FIG. 4 is a cross-sectional view showing an example of the configuration of the light source unit according to Embodiment 1 of the present invention. For example, as shown in FIG. 2B, the light source unit 10 is disposed at the upper left portion in a plan view. The light source unit 10 is provided with a discharge lamp 11 and a reflector 15 as shown in FIG. The discharge lamp 11 is provided inside the reflector 15, as shown in FIG. Specifically, at least a bulb 11 a of the discharge lamp 11 is provided inside the reflector 15.
　放電ランプ１１は、ランプ光を発光するバルブ１１ａ、及び内部に配線等を有するシール部１１ｂ、１１ｃを備えている。放電ランプ１１は、それぞれのシール部１１ｂ、１１ｃから電流が供給されることにより発光する。 The discharge lamp 11 includes a bulb 11a that emits lamp light, and seal portions 11b and 11c having a wiring and the like inside. The discharge lamp 11 emits light when current is supplied from the respective seal parts 11 b and 11 c.
　シール部１１ｂは、図４に示すように、バルブ１１ａよりランプ光の出射側（＋Ｙ側）に配置され、＋Ｙ方向に延在している。シール部１１ｃは、図４に示すように、バルブ１１ａを挟んでシール部１１ｂと反対側に配置され、－Ｙ方向に延在している。 As shown in FIG. 4, the seal portion 11 b is disposed on the lamp light emission side (+ Y side) of the bulb 11 a and extends in the + Y direction. As shown in FIG. 4, the seal portion 11c is disposed on the opposite side of the seal portion 11b with the valve 11a interposed therebetween, and extends in the -Y direction.
　リフレクター１５は、ランプ光を反射し、光学ユニット２０へ出射する。このため、リフレクター１５は、図４に示すように、ランプ光の出射側（＋Ｙ側）が開口されている。また、リフレクター１５には、図４に示すように、ランプ光の出射側とは反対側（－Ｙ側）に、貫通穴１５ａが形成されている。放電ランプ１１は、シール部１１ｃが貫通穴１５ａに挿通された状態でリフレクター１５に設置されている。 The reflector 15 reflects the lamp light and emits it to the optical unit 20. For this reason, as shown in FIG. 4, the reflector 15 is open at the light emission side (+ Y side) of the lamp light. Further, as shown in FIG. 4, the reflector 15 is formed with a through hole 15a on the side (−Y side) opposite to the lamp light emission side. The discharge lamp 11 is installed on the reflector 15 in a state where the seal portion 11 c is inserted into the through hole 15 a.
　光学ユニット２０は、例えば図２（ｂ）に示すように、平面視で中央上部に光源部１０と隣接して配置されている。光学ユニット２０は、例えば、１以上のレンズ又はミラー等で構成されている。光学ユニット２０は、光源部１０から出射されたランプ光を表示素子へ誘導する。例えば、光学ユニットは、光源部１０から＋Ｙ方向へ出射されたランプ光の進行方向を＋Ｘ方向へ変更しながら表示素子３０へ誘導する。 For example, as shown in FIG. 2 (b), the optical unit 20 is disposed adjacent to the light source unit 10 at the upper center in plan view. The optical unit 20 is configured of, for example, one or more lenses or mirrors. The optical unit 20 guides lamp light emitted from the light source unit 10 to the display element. For example, the optical unit guides the display element 30 while changing the traveling direction of the lamp light emitted from the light source unit 10 in the + Y direction to the + X direction.
　表示素子３０は、光学ユニット２０と投射光学系４０との間に配置されている。表示素子３０は、例えば図２（ｂ）に示すように、平面視で光学ユニット２０の＋Ｘ側に配置されている。 The display element 30 is disposed between the optical unit 20 and the projection optical system 40. For example, as shown in FIG. 2B, the display element 30 is disposed on the + X side of the optical unit 20 in plan view.
　表示素子３０は、例えば、透過型または反射型液晶パネル、あるいはＤＭＤ（Ｄｉｇｉｔａｌ　Ｍｉｃｒｏｍｉｒｒｏｒ　Ｄｅｖｉｃｅ：登録商標）パネル等で構成されている。表示素子３０は、スクリーン等へ投影する映像を表示する。表示素子３０は、光学ユニット２０から誘導されたランプ光を透過又は反射させることにより映像を投射光学系４０へ出射する。 The display element 30 is configured of, for example, a transmissive or reflective liquid crystal panel or a DMD (Digital Micromirror Device (registered trademark) panel). The display element 30 displays an image projected on a screen or the like. The display element 30 transmits an image to the projection optical system 40 by transmitting or reflecting the lamp light guided from the optical unit 20.
　投射光学系４０は、例えば図２（ｂ）に示すように、平面視で表示素子３０の＋Ｘ側に配置されている。投射光学系４０は、１以上のレンズ又はミラー等で構成されている。投射光学系４０は、表示素子３０から入射された映像を投射し、表示素子３０に表示された映像をスクリーンに拡大表示する。 The projection optical system 40 is, for example, as shown in FIG. 2B, disposed on the + X side of the display element 30 in a plan view. The projection optical system 40 is configured of one or more lenses or mirrors. The projection optical system 40 projects an image incident from the display element 30, and enlarges and displays the image displayed on the display element 30 on a screen.
　冷却ファン５０は、例えば図２（ｂ）に示すように、図示で光源部１０の右下の領域に配置されている。また、冷却ファン５０は、例えば図２（ｂ）に示すように、右下から左上に向かって延在して配置されている。冷却ファン５０は、ランプダクト６０を介して、放電ランプ１１を冷却する冷却風を供給する。 The cooling fan 50 is disposed, for example, in the lower right area of the light source unit 10 as shown in FIG. 2B. Further, as shown in FIG. 2B, for example, the cooling fan 50 is disposed extending from the lower right to the upper left. The cooling fan 50 supplies cooling air for cooling the discharge lamp 11 through the lamp duct 60.
　図５～図６は、本発明の実施の形態１に係るランプダクト周辺の構成の一例を示す要部断面図である。なお、図５には、ランプダクト６０に隣接して配置された光源部１０及び冷却ファン５０も示されている。図５は、おおよそ＋Ｘ側から見たときの図であり、主に光源部１０と冷却ファン５０との間におけるランプダクト６０の断面図を示している。図６は、おおよそ－Ｘ側から見たときの図であり、主に光源部１０付近におけるランプダクト６０及びランプシェード７０の断面図を示している。 5 to 6 are main-portion cross-sectional views showing an example of the configuration around the lamp duct according to Embodiment 1 of the present invention. The light source unit 10 and the cooling fan 50 disposed adjacent to the lamp duct 60 are also shown in FIG. 5. FIG. 5 is a view from approximately the + X side, and mainly shows a cross-sectional view of the lamp duct 60 between the light source unit 10 and the cooling fan 50. FIG. 6 is a view approximately from the −X side, and mainly shows a cross-sectional view of the lamp duct 60 and the lamp shade 70 in the vicinity of the light source unit 10.
　ランプダクト６０は、例えば、図２及び図５に示すように、光源部１０と冷却ファン５０との間に配置されている。また、光源部１０付近では、ランプダクト６０は、例えば、図５及び図６に示すように、冷却ファン５０側（＋Ｘ側）からランプシェード７０を取り囲むように配置されている。 The lamp duct 60 is disposed, for example, between the light source unit 10 and the cooling fan 50 as shown in FIGS. 2 and 5. In the vicinity of the light source unit 10, for example, as shown in FIGS. 5 and 6, the lamp duct 60 is disposed so as to surround the lamp shade 70 from the cooling fan 50 side (+ X side).
　ランプダクト６０は、例えば、図５に示すように、第１の風路６１、第２の風路６２、第３の風路６３、風路切換部６５を備えている。据置状態のとき、図５に示すように、ランプダクト６０には、上方（＋Ｚ側）から下方（－Ｚ側）に向かって、第１の風路６１の導入口６１ａ、第３の風路６３の導入口６３ａ、第２の風路６２の導入口６２ａが順次配置されている。 For example, as shown in FIG. 5, the lamp duct 60 includes a first air passage 61, a second air passage 62, a third air passage 63, and an air passage switching unit 65. In the stationary state, as shown in FIG. 5, in the lamp duct 60, from the upper side (+ Z side) to the lower side (−Z side), the inlet 61a of the first air path 61, the third air path The 63 inlets 63 a and the inlets 62 a of the second air passage 62 are sequentially arranged.
　第１の風路６１は、図５に示すように、据置状態のとき、上方（＋Ｚ側）においてランプシェード７０と隣接する領域まで延在している。第１の風路６１は、据置状態のとき、冷却ファン５０から供給された冷却風を、光源部１０の内部における放電ランプ１１の上方（＋Ｚ側）の領域へ導出する。 As shown in FIG. 5, in the stationary state, the first air passage 61 extends to a region adjacent to the lamp shade 70 at the upper side (+ Z side). In the stationary state, the first air passage 61 leads the cooling air supplied from the cooling fan 50 to a region (+ Z side) above the discharge lamp 11 inside the light source unit 10.
　第２の風路６２は、図５に示すように、据置状態のとき、下方（－Ｚ側）においてランプシェード７０と隣接する領域まで延在している。第２の風路６２は、天吊り状態のとき、冷却ファン５０から供給された冷却風を、光源部１０の内部における放電ランプ１１の上方（－Ｚ側）の領域へ導出する。 As shown in FIG. 5, the second air passage 62 extends to a region adjacent to the lamp shade 70 at the lower side (−Z side) in the stationary state. The second air passage 62 guides the cooling air supplied from the cooling fan 50 to a region above the discharge lamp 11 (−Z side) inside the light source unit 10 in the ceiling-suspended state.
　第３の風路６３は、図５に示すように、側方（＋Ｘ側）においてランプシェード７０と隣接する領域まで延在している。第３の風路６３は、冷却ファン５０から供給された冷却風を、光源部１０の内部における放電ランプ１１のシール部１１ｂへ向けて導出する。このように、ランプダクト６０の各風路６１、６２、６３は、冷却ファン５０から供給された冷却風を光源部１０の内部へ誘導する。 As shown in FIG. 5, the third air passage 63 extends to a region adjacent to the lampshade 70 on the side (+ X side). The third air passage 63 guides the cooling air supplied from the cooling fan 50 toward the seal portion 11 b of the discharge lamp 11 inside the light source unit 10. Thus, the air passages 61, 62, 63 of the lamp duct 60 guide the cooling air supplied from the cooling fan 50 to the inside of the light source unit 10.
　第１の風路６１の導出口６１ｂは、据置状態のとき、例えば図６に示すように、上方（＋Ｚ側）においてランプシェード７０と隣接する領域に配置されている。また、第２の風路６２の導出口６２ｂは、据置状態のとき、下方（－Ｚ側）においてランプシェード７０と隣接する領域に配置されている。 In the stationary state, for example, as shown in FIG. 6, the outlet 61b of the first air passage 61 is disposed in a region adjacent to the lampshade 70 at the upper side (+ Z side). Further, the outlet 62b of the second air passage 62 is disposed in a region adjacent to the lamp shade 70 at the lower side (−Z side) in the stationary state.
　図７は、本発明の実施の形態１に係る風路の導入口付近の拡大図である。図７（ａ）は、風路の導入口付近の断面図、図７（ｂ）は、上流側から見た風路の導入口付近の図である。風路切換部６５は、図７（ａ）、図７（ｂ）に示すように、各風路６１～６３の導入口６１ａ～６３ａ付近に配置されている。 FIG. 7 is an enlarged view of the vicinity of the inlet of the air passage according to Embodiment 1 of the present invention. Fig.7 (a) is sectional drawing of the inlet-port vicinity of an air path, FIG.7 (b) is a figure of the inlet-port vicinity of the air path seen from the upstream. The air passage switching unit 65 is disposed in the vicinity of the inlets 61a to 63a of the air passages 61 to 63, as shown in FIGS. 7 (a) and 7 (b).
　例えば、風路切換部６５の一方の端部は、第３の風路６３の導入口６３ａ付近に配置され、風路切換部６５の他方の端部は、第１の風路６１の導入口６１ａ、第２の風路６２の導入口６２ａ及び第３の風路６３の導入口６３ａの上流側に配置されている。風路切換部６５の一方の端部は、図７（ｂ）に示すように、ランプダクト６０の壁部６０ａ、６０ｂへそれぞれ突出した突部６５ａ、６５ｂを有している。風路切換部６５は、突部６５ａ、６５ｂを介して、上下方向（Ｚ方向）へ回転自在にランプダクト６０に取り付けられている。また、風路切換部６５の一方の端部には、図７（ａ）、図７（ｂ）に示すように、第３の風路６３の導入口６３ａへ冷却風を導入する切欠部６６が形成されている。風路切換部６５は、例えば、ステンレスで形成されている。 For example, one end of the air passage switching unit 65 is disposed near the inlet 63 a of the third air passage 63, and the other end of the air passage switching unit 65 is an inlet of the first air passage 61. It is disposed upstream of the inlet port 62 a of the second air passage 62 and the inlet port 63 a of the third air passage 63. As shown in FIG. 7B, one end of the air passage switching portion 65 has projections 65a and 65b which respectively project to the wall portions 60a and 60b of the lamp duct 60. The air passage switching unit 65 is attached to the lamp duct 60 so as to be rotatable in the vertical direction (Z direction) via the projections 65 a and 65 b. Further, at one end of the air passage switching portion 65, as shown in FIGS. 7A and 7B, a notch 66 for introducing the cooling air to the inlet 63a of the third air passage 63. Is formed. The air passage switching unit 65 is formed of, for example, stainless steel.
　風路切換部６５は、据置状態と天吊り状態との間で配置が切り換わる。据置状態のとき、風路切換部６５の他方の端部は、例えば、図５に示す位置Ｐ１に配置される。一方、天吊り状態のとき、風路切換部６５の他方の端部は、自重により、図５に示す位置Ｐ１から位置Ｐ２へ落下する。このように、風路切換部６５の配置が切り換わる。 The air path switching unit 65 switches the arrangement between the stationary state and the suspended state. In the stationary state, the other end of the air path switching unit 65 is disposed, for example, at the position P1 shown in FIG. On the other hand, in the ceiling-mounted state, the other end of the air path switching unit 65 falls from the position P1 shown in FIG. 5 to the position P2 by its own weight. Thus, the arrangement of the air passage switching unit 65 is switched.
　据置状態のとき、風路切換部６５は、図５、図７（ａ）、図７（ｂ）に示すように、第２の風路６２の導入口６２ａを塞ぎ、第１の風路６１及び第３の風路６３へ冷却風を導入させる。これに対し、天吊り状態のとき、風路切換部６５は、図５に示すように、第１の風路６１の導入口６１ａを塞ぎ、第２の風路６２及び第３の風路６３へ冷却風を導入させる。このように、風路切換部６５は、投射型映像表示装置１の姿勢に応じて、冷却風を導入する風路を切り換える。 In the stationary state, the air passage switching unit 65 closes the inlet 62 a of the second air passage 62 as shown in FIGS. 5, 7 (a) and 7 (b), and the first air passage 61. And introduce the cooling air into the third air passage 63. On the other hand, in the ceiling-suspended state, the air passage switching unit 65 closes the inlet 61 a of the first air passage 61 as shown in FIG. 5, and the second air passage 62 and the third air passage 63. To introduce cooling air. As described above, the air path switching unit 65 switches the air path for introducing the cooling air in accordance with the attitude of the projection type image display device 1.
　風路切換部６５は、一方の端部から他方の端部までの長さが、例えば、第１の風路６１の導入口６１ａの上下方向（Ｚ方向）の幅と第３の風路６３の導入口６３ａの上下方向（Ｚ方向）の幅との合計の長さよりも大きくなるように構成されている。また、風路切換部６５は、第２の風路６２の導入口６２ａの上下方向（Ｚ方向）の幅と第３の風路６３の導入口６３ａの上下方向（Ｚ方向）の幅との合計の長さよりも大きくなるように構成されている。 The air passage switching portion 65 has a length from one end to the other end, for example, the width in the vertical direction (Z direction) of the inlet 61 a of the first air passage 61 and the third air passage 63. The total length of the inlet port 63a and the width in the vertical direction (Z direction) of the inlet port 63a is larger than the total length. Further, the air passage switching unit 65 has a width in the vertical direction (Z direction) of the inlet 62 a of the second air passage 62 and a width in the vertical direction (Z direction) of the inlet 63 a of the third air passage 63. It is configured to be larger than the total length.
　ランプシェード７０は、図５、図６に示すように、ランプ光の出射側（＋Ｙ側）に光源部１０と隣接して配置されている。また、ランプシェード７０は、光学ユニット２０とも隣接して配置されている。ランプシェード７０は、光源部１０から光学ユニット２０へ射出されるランプ光の光漏れを抑制するとともに、光源部１０からの放熱を促進するために設けられた部材である。 The lampshade 70 is disposed adjacent to the light source unit 10 on the light emission side (+ Y side) of the lamp light, as shown in FIGS. 5 and 6. Further, the lampshade 70 is disposed adjacent to the optical unit 20 as well. The lampshade 70 is a member provided to suppress light leakage of lamp light emitted from the light source unit 10 to the optical unit 20 and to promote heat dissipation from the light source unit 10.
　ランプシェード７０は、図６に示すように、第１の風向調整部７１、第２の風向調整部７２を備えている。第１の風向調整部７１は、図６に示すように、据置状態のとき、上部（＋Ｚ側）に配置されている。第１の風向調整部７１は、第１の風向変更面７１ａ及び第１の風向安定面７１ｂを備えている。第１の風向変更面７１ａは、第１の風路６１の導出口６１ｂから導出された冷却風の風向をリフレクター１５の反射面１５ｂに沿った方向へ変更する。 As shown in FIG. 6, the lampshade 70 includes a first wind direction adjusting unit 71 and a second wind direction adjusting unit 72. As shown in FIG. 6, the first wind direction adjusting unit 71 is disposed at the top (+ Z side) in the stationary state. The first wind direction adjustment unit 71 includes a first wind direction changing surface 71 a and a first wind direction stable surface 71 b. The first wind direction changing surface 71 a changes the wind direction of the cooling air derived from the outlet 61 b of the first air passage 61 in the direction along the reflecting surface 15 b of the reflector 15.
　第１の風向安定面７１ｂは、図６に示すように、第１の風向調整部７１に隣接する領域のリフレクター１５の反射面１５ｂとほぼ平行に配置されている。第１の風向安定面７１ｂは、第１の風向変更面７１ａにおいて変更された冷却風の風向を安定させる面である。このように、第１の風向調整部７１は、第１の風路６１の導出口６１ｂから導出された冷却風の風向をリフレクター１５の反射面１５ｂに沿った方向へ調整する。 As shown in FIG. 6, the first wind direction stable surface 71 b is disposed substantially in parallel with the reflecting surface 15 b of the reflector 15 in a region adjacent to the first wind direction adjusting unit 71. The first wind direction stable surface 71 b is a surface that stabilizes the wind direction of the cooling air changed in the first wind direction changing surface 71 a. As described above, the first wind direction adjusting unit 71 adjusts the wind direction of the cooling air drawn from the outlet 61 b of the first air passage 61 in the direction along the reflection surface 15 b of the reflector 15.
　一方、第２の風向調整部７２は、図６に示すように、据置状態のとき、下部（－Ｚ側）に配置されている。第２の風向調整部７２は、第２の風向変更面７２ａ及び第２の風向安定面７２ｂを備えている。第２の風向変更面７２ａは、第２の風路６２の導出口６２ｂから導出された冷却風の風向をリフレクター１５の反射面１５ｂに沿った方向へ変更する。 On the other hand, as shown in FIG. 6, the second wind direction adjusting unit 72 is disposed at the lower portion (−Z side) in the stationary state. The second wind direction adjustment unit 72 includes a second wind direction changing surface 72a and a second wind direction stable surface 72b. The second wind direction changing surface 72 a changes the wind direction of the cooling air derived from the outlet 62 b of the second air passage 62 in the direction along the reflecting surface 15 b of the reflector 15.
　第２の風向安定面７２ｂは、図６に示すように、第２の風向調整部７２に隣接する領域のリフレクター１５の反射面１５ｂとほぼ平行に配置されている。第２の風向安定面７２ｂは、第２の風向変更面７２ａにおいて変更された冷却風の風向を安定させる面である。このように、第２の風向調整部７２は、第２の風路６２の導出口６２ｂから導出された冷却風の風向をリフレクター１５の反射面１５ｂに沿った方向へ調整する。 As shown in FIG. 6, the second wind direction stable surface 72 b is disposed substantially in parallel with the reflecting surface 15 b of the reflector 15 in a region adjacent to the second wind direction adjusting unit 72. The second wind direction stable surface 72 b is a surface that stabilizes the wind direction of the cooling air changed in the second wind direction changing surface 72 a. As described above, the second wind direction adjusting unit 72 adjusts the wind direction of the cooling air drawn from the outlet 62 b of the second air path 62 in the direction along the reflection surface 15 b of the reflector 15.
　ランプシェード７０は、開口部７３、７５を有している。開口部７３は、図６に示すように、第３の風路６３の導出口６３ｂと対応する位置（＋Ｘ側）に形成されている。開口部７５は、開口部７３と反対側（－Ｘ側）で、図示しない排気ダクトの排気口と対応する位置に形成されている。 The lampshade 70 has openings 73, 75. The opening 73 is formed at a position (+ X side) corresponding to the outlet 63 b of the third air passage 63, as shown in FIG. 6. The opening 75 is formed on the opposite side (−X side) of the opening 73 to a position corresponding to the exhaust port of an exhaust duct (not shown).
　ランプシェード７０、第１の風向調整部７１、及び第２の風向調整部７２は、例えば、アルミニウムで形成されている。また、ランプシェード７０、第１の風向調整部７１、及び第２の風向調整部７２は、一体で構成されてもよい。 The lampshade 70, the first wind direction adjusting unit 71, and the second wind direction adjusting unit 72 are made of, for example, aluminum. Moreover, the lampshade 70, the first wind direction adjusting unit 71, and the second wind direction adjusting unit 72 may be integrally configured.
　電源部８１は、例えば図２（ｂ）に示すように、図示で左下の領域に配置されている。電源部８１は、図示しない外部電源から入力された電力を投射型映像表示装置１の各部に供給する。 For example, as shown in FIG. 2B, the power supply unit 81 is disposed in the lower left area in the drawing. The power supply unit 81 supplies the power input from an external power supply (not shown) to each unit of the projection display apparatus 1.
　メモリ８２は、例えば、ＤＲＡＭ（Ｄｙｎａｍｉｃ　Ｒａｎｄｏｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ）等の揮発性メモリで構成されている。メモリ８２は、不揮発性メモリ８３に記憶された投射型映像表示装置１の制御プログラムを展開して保持する。また、メモリ８２は、制御プログラム実行用の各種データを保持する。また、メモリ８２は、映像入力部８７及び音声入力部８６を介して入力された映像データ、音声データ等をバッファリングする。 The memory 82 is configured of, for example, a volatile memory such as a dynamic random access memory (DRAM). The memory 82 develops and holds the control program of the projection type video display device 1 stored in the non-volatile memory 83. Further, the memory 82 holds various data for control program execution. In addition, the memory 82 buffers video data, audio data, and the like input via the video input unit 87 and the audio input unit 86.
　不揮発性メモリ８３は、例えば、フラッシュメモリ等の不揮発性メモリで構成されている。不揮発性メモリ８３は、投射型映像表示装置１の制御プログラム、制御プログラム実行用の各種データ等を格納する。 The nonvolatile memory 83 is configured of, for example, nonvolatile memory such as flash memory. The non-volatile memory 83 stores a control program of the projection type video display device 1, various data for executing the control program, and the like.
　操作信号入力部８４は、例えば図２（ｂ）に示すように、筐体９０の上面９０ａに設けられている。操作信号入力部８４には、例えば１以上の操作ボタンが設けられている。ユーザが操作ボタンを操作すると、操作信号入力部８４は、操作内容に応じた操作信号を制御部８０へ出力する。制御部８０が操作信号に基づいた処理を実行することにより、投射型映像表示装置１は、操作内容に応じた各種処理を実行する。なお、投射型映像表示装置１は、例えば図示しない受信部を備え、受信部はリモコンから送信された操作信号を受信し、受信した操作信号を制御部８０へ出力してもよい。 The operation signal input unit 84 is provided on the upper surface 90 a of the housing 90 as shown in FIG. The operation signal input unit 84 is provided with, for example, one or more operation buttons. When the user operates the operation button, the operation signal input unit 84 outputs an operation signal corresponding to the content of the operation to the control unit 80. When the control unit 80 executes the processing based on the operation signal, the projection type video display device 1 executes various processing according to the content of the operation. The projection type video display device 1 may include, for example, a receiving unit (not shown), and the receiving unit may receive the operation signal transmitted from the remote controller and output the received operation signal to the control unit 80.
　通信部８５は、例えば図示しないＰＣ、タブレット端末、スマートフォン等の情報処理端末との間で無線通信を行う。通信部８５は、例えば、情報処理端末との間で、映像データや音声データ等の各種データの送受信を行う。 The communication unit 85 performs wireless communication with an information processing terminal such as a PC (not shown), a tablet terminal, or a smartphone. The communication unit 85 transmits and receives various data such as video data and audio data to and from, for example, an information processing terminal.
　音声入力部８６は、例えば、図示しない音声入力端子を介して情報処理端末と接続される。音声入力部８６は、情報処理端末との間で音声データ等の入出力を行う。映像入力部８７は、例えば、図示しない映像入力端子を介して情報処理端末と接続される。映像入力部８７は、情報処理端末との間で映像データ等の入出力を行う。 The voice input unit 86 is connected to the information processing terminal via, for example, a voice input terminal (not shown). The voice input unit 86 inputs and outputs voice data and the like to and from the information processing terminal. The video input unit 87 is connected to the information processing terminal via, for example, a video input terminal (not shown). The video input unit 87 inputs and outputs video data and the like to and from the information processing terminal.
　なお、音声入力部８６及び映像入力部８７は、一体で構成されてもよい。この場合、音声入力部８６及び映像入力部８７は、例えば、ＨＤＭＩ（Ｈｉｇｈ－Ｄｅｆｉｎｉｔｉｏｎ　Ｍｕｌｔｉｍｅｄｉａ　Ｉｎｔｅｒｆａｃｅ）やＶＧＡ（Ｖｉｄｅｏ　Ｇｒａｐｈｉｃｓ　Ａｒｒａｙ）、ＤＶＩ（Ｄｉｇｉｔａｌ　Ｖｉｓｕａｌ　Ｉｎｔｅｒｆａｃｅ）等で構成されてもよい。 The audio input unit 86 and the video input unit 87 may be integrally configured. In this case, the audio input unit 86 and the video input unit 87 may be configured by, for example, a High-Definition Multimedia Interface (HDMI), a Video Graphics Array (VGA), a Digital Visual Interface (DVI), or the like.
　音声出力部８８は、例えば、図２（ａ）に示すスピーカー８８ａや外部出力端子等を備えている。音声出力部８８は、スクリーン等に表示された映像に関連する音声、投射型映像表示装置１の操作音、エラーに関する通知音や警告音、あるいはこれらの音声データを出力する。 The audio output unit 88 includes, for example, a speaker 88a shown in FIG. 2A, an external output terminal, and the like. The audio output unit 88 outputs an audio related to a video displayed on a screen or the like, an operation sound of the projection type video display device 1, a notification sound or warning sound regarding an error, or audio data of these.
　表示素子駆動部８９は、制御部８０から供給される映像データに基づいて、表示素子３０に所定の映像を表示させる。 The display element drive unit 89 causes the display element 30 to display a predetermined image based on the image data supplied from the control unit 80.
　制御部８０は、例えば、ＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ）等で構成されている。制御部８０は、例えば、投射型映像表示装置１の制御プログラムを実行し動作させる。また、制御部８０は、例えば、映像データを表示素子駆動部８９へ供給し、映像データに対応する音声データを音声出力部８８へ供給する。このとき、制御部８０は、映像入力部８７、音声入力部８６、通信部８５に入力された映像データ及び音声データを供給してもよいし、例えば、不揮発性メモリ８３に格納された映像データ及び音声データを供給してもよい。 The control unit 80 is configured of, for example, a CPU (Central Processing Unit) or the like. The control unit 80 executes and operates, for example, a control program of the projection type video display device 1. Further, for example, the control unit 80 supplies video data to the display element driving unit 89, and supplies audio data corresponding to the video data to the audio output unit 88. At this time, the control unit 80 may supply the video data and audio data input to the video input unit 87, the audio input unit 86, and the communication unit 85. For example, the video data stored in the non-volatile memory 83 And audio data may be provided.
　また、制御部８０は、例えば、図示しないランプ温度測定部において測定された放電ランプ１１のランプ温度に基づいて、冷却ファン５０から供給される冷却風の風量の調整を行う。例えば、制御部８０は、測定されたランプ温度と予め設定された設定温度とを比較する。制御部８０は、測定されたランプ温度が設定温度より高い場合、冷却風の風量が大きくなるように冷却ファン５０を制御する。 In addition, the control unit 80 adjusts the volume of the cooling air supplied from the cooling fan 50 based on, for example, the lamp temperature of the discharge lamp 11 measured by a lamp temperature measurement unit (not shown). For example, the control unit 80 compares the measured lamp temperature with a preset temperature set in advance. When the measured lamp temperature is higher than the set temperature, the control unit 80 controls the cooling fan 50 so that the volume of the cooling air becomes large.
　また、制御部８０は、測定されたランプ温度が設定温度より低い場合、冷却風の風量が小さくなるように冷却ファン５０を制御してもよい。放電ランプ１１の温度に応じて、ランプ光の光量が大きく変動する場合があるからである。 In addition, when the measured lamp temperature is lower than the set temperature, the control unit 80 may control the cooling fan 50 so that the volume of the cooling air decreases. This is because the amount of light of the lamp light may greatly fluctuate depending on the temperature of the discharge lamp 11.
　なお、設定温度は、許容最低温度及び許容最高温度の範囲内で設定されてもよい。すなわち、制御部８０は、測定されたランプ温度が許容最低温度より高い場合、冷却風の風量が大きくなるように冷却ファン５０を制御し、測定されたランプ温度が許容最低温度より低い場合、冷却風の風量が小さくなるように冷却ファン５０を制御する。 The set temperature may be set within the range of the allowable minimum temperature and the allowable maximum temperature. That is, when the measured lamp temperature is higher than the allowable minimum temperature, the control unit 80 controls the cooling fan 50 to increase the volume of the cooling air, and when the measured lamp temperature is lower than the allowable minimum temperature, the cooling is performed. The cooling fan 50 is controlled to reduce the volume of the wind.
　防塵フィルタ９１は、例えば図３（ａ）に示すように筐体９０の左側面９０ｂに設置されている。また、防塵フィルタ９２は、例えば図３（ｂ）に示すように筐体９０の右側面９０ｃに設置されている。防塵フィルタ９１、９２は、ごみやほこり等が筐体９０の内部へ進入するのを抑制する。これにより、筐体９０の内部への不純物の進入が抑えられる。 The dustproof filter 91 is installed on the left side 90b of the housing 90, as shown in FIG. 3A, for example. Further, the dustproof filter 92 is installed on the right side surface 90c of the housing 90 as shown in FIG. 3B, for example. The dustproof filters 91 and 92 suppress dust and dirt from entering the inside of the housing 90. Thereby, the approach of the impurity to the inside of the housing | casing 90 is suppressed.
　＜据置状態における放電ランプの冷却＞
　ここで、放電ランプ１１の冷却方法について説明する。まず、据置状態のときの冷却方法について説明する。図８は、据置状態のとき、ランプダクトにおける冷却風の流れを示す図である。図９は、据置状態のとき、ランプシェード及び光源部における冷却風の流れの詳細を示す図である。 <Cooling of discharge lamp in stationary state>
Here, a method of cooling the discharge lamp 11 will be described. First, the cooling method in the stationary state will be described. FIG. 8 is a view showing the flow of cooling air in the lamp duct in the stationary state. FIG. 9 is a diagram showing the details of the flow of cooling air in the lampshade and the light source unit in the stationary state.
　据置状態では、図８に示すように、風路切換部６５の他方の端部はＰ１に配置され、第２の風路６２の導入口６２ａが塞がれる。これにより、第１の風路６１及び第３の風路６３に冷却風が導入され、第２の風路６２には冷却風はほとんど導入されない。第１の風路６１に導入された冷却風は、図９に示すように、導出口６１ｂから第１の風向調整部７１へ向けて導出される。導出口６１ｂから導出された冷却風の風向は、図９に示すように、第１の風向変更面７１ａにより、光源部１０の方向（－Ｙ方向）へ変更される。そして、冷却風は第１の風向安定面７１ｂを介して、リフレクター１５の反射面１５ｂに沿って光源部１０の内部へ供給される。 In the stationary state, as shown in FIG. 8, the other end of the air passage switching unit 65 is disposed at P1, and the inlet 62a of the second air passage 62 is closed. As a result, the cooling air is introduced into the first air passage 61 and the third air passage 63, and the cooling air is hardly introduced into the second air passage 62. The cooling air introduced into the first air passage 61 is, as shown in FIG. 9, derived from the outlet 61 b toward the first air direction adjusting unit 71. The wind direction of the cooling air derived from the outlet 61 b is changed in the direction (−Y direction) of the light source unit 10 by the first wind direction changing surface 71 a as shown in FIG. Then, the cooling air is supplied to the inside of the light source unit 10 along the reflection surface 15 b of the reflector 15 through the first wind direction stable surface 71 b.
　光源部１０の内部に供給された冷却風は、図９に示すように、リフレクター１５の反射面１５ｂに沿って、主にバルブ１１ａ、シール部１１ｃに向かって移動する。放電ランプ１１の冷却に使用された冷却風は、図８に示す開口部７５及び排気ダクト（図示は省略）を介して外部へ排気される。 The cooling air supplied to the inside of the light source unit 10 mainly moves toward the bulb 11a and the seal portion 11c along the reflection surface 15b of the reflector 15, as shown in FIG. The cooling air used to cool the discharge lamp 11 is exhausted to the outside through the opening 75 and the exhaust duct (not shown) shown in FIG.
　第３の風路６３に導入された冷却風は、図８、図９に示すように、主に放電ランプ１１のシール部１１ｂへ向けて供給される。シール部１１ｂの冷却に使用された冷却風は、図８に示す開口部７５及び排気ダクト（図示は省略）を介して外部へ排気される。 The cooling air introduced into the third air passage 63 is mainly supplied toward the seal portion 11 b of the discharge lamp 11 as shown in FIGS. 8 and 9. The cooling air used to cool the seal portion 11b is exhausted to the outside through the opening 75 and the exhaust duct (not shown) shown in FIG.
　＜天吊り状態における放電ランプの冷却＞
　次に、天吊り状態のときの冷却方法について説明する。図１０は、天吊り状態のとき、ランプダクトにおける冷却風の流れを示す図である。図１１は、天吊り状態のとき、ランプシェード及び光源部における冷却風の流れの詳細を示す図である。なお、図１０、図１１では、各部は反転表示されておらず、据置状態及び天吊り状態における冷却風の流れの差異が明確に示されている。 <Cooling of the discharge lamp in a suspended state>
Next, a cooling method in the ceiling suspension state will be described. FIG. 10 is a diagram showing the flow of the cooling air in the lamp duct in the ceiling suspended state. FIG. 11 is a diagram showing the details of the flow of cooling air in the lampshade and the light source unit in the ceiling suspended state. In FIG. 10 and FIG. 11, each part is not displayed in reverse, and the difference in the flow of the cooling air in the stationary state and the ceiling suspended state is clearly shown.
　天吊り状態では、図１０に示すように、風路切換部６５の他方の端部はＰ２に配置され、第１の風路６１の導入口６１ａが塞がれる。これにより、第２の風路６２及び第３の風路６３に冷却風が導入され、第１の風路６１には冷却風はほとんど導入されない。第２の風路６２に導入された冷却風は、図１１に示すように、導出口６２ｂから第２の風向調整部７２へ向けて導出される。導出口６２ｂから導出された冷却風の風向は、図１１に示すように、第２の風向変更面７２ａにより、光源部１０の方向（－Ｙ方向）へ変更される。そして、冷却風は第２の風向安定面７２ｂを介して、リフレクター１５の反射面１５ｂに沿って光源部１０の内部へ供給される。 In the ceiling-mounted state, as shown in FIG. 10, the other end of the air passage switching portion 65 is disposed at P2, and the inlet 61a of the first air passage 61 is closed. As a result, the cooling air is introduced into the second air passage 62 and the third air passage 63, and the cooling air is hardly introduced into the first air passage 61. The cooling air introduced into the second air passage 62 is, as shown in FIG. 11, derived from the outlet 62 b toward the second air direction adjusting unit 72. The wind direction of the cooling air derived from the outlet 62b is changed in the direction (-Y direction) of the light source unit 10 by the second wind direction changing surface 72a, as shown in FIG. Then, the cooling air is supplied to the inside of the light source unit 10 along the reflection surface 15 b of the reflector 15 via the second air flow direction stable surface 72 b.
　光源部１０の内部に供給された冷却風は、図１１に示すように、リフレクター１５の反射面１５ｂに沿って、主にバルブ１１ａ、シール部１１ｃに向かって移動する。放電ランプ１１の冷却に使用された冷却風は、図８に示す開口部７５及び排気ダクト（図示は省略）を介して外部へ排気される。 The cooling air supplied to the inside of the light source unit 10 mainly moves toward the bulb 11a and the seal portion 11c along the reflection surface 15b of the reflector 15, as shown in FIG. The cooling air used to cool the discharge lamp 11 is exhausted to the outside through the opening 75 and the exhaust duct (not shown) shown in FIG.
　なお、第３の風路６３に導入された冷却風の流れについては、据置状態の場合と同様であるので説明を省略する。 The flow of the cooling air introduced into the third air passage 63 is the same as that in the stationary state, and thus the description thereof is omitted.
　＜本実施の形態による効果＞
　本実施の形態によれば、風路切換部６５は、据置状態のとき第２の風路６２の導入口６２ａを塞ぎ、第１の風路６１へ冷却風を導入させ、天吊り状態のとき第１の風路６１の導入口６１ａを塞ぎ、第２の風路６２へ冷却風を導入させる。この構成によれば、投射型映像表示装置１の使用時には、常に高温側の領域からバルブ１１ａへ向けて冷却風が供給されるので、効率的に放電ランプ１１を冷却することができる。これにより、冷却ファン５０による放電ランプ１１の冷却能力を向上させることが可能となる。 <Effect of this embodiment>
According to the present embodiment, the air passage switching unit 65 closes the introduction port 62a of the second air passage 62 in the stationary state and causes the cooling air to be introduced into the first air passage 61, and is in the ceiling suspended state. The inlet 61 a of the first air passage 61 is closed, and cooling air is introduced into the second air passage 62. According to this configuration, when the projection type image display device 1 is used, the cooling air is always supplied from the region on the high temperature side toward the valve 11a, so the discharge lamp 11 can be cooled efficiently. Thus, the cooling capacity of the discharge lamp 11 by the cooling fan 50 can be improved.
　また、本実施の形態によれば、ランプダクト６０は、ランプ光の出射側（＋Ｙ側）に配置された放電ランプ１１のシール部１１ｂへ向けて冷却風を導出する第３の風路６３を備えている。この構成によれば、冷却風によりシール部１１ｂが直接冷却されるので、冷却ファン５０による放電ランプ１１の冷却能力をさらに向上させることが可能となる。 Further, according to the present embodiment, the lamp duct 60 is configured to provide the third air passage 63 for guiding the cooling air toward the seal portion 11 b of the discharge lamp 11 disposed on the lamp light emission side (+ Y side). Have. According to this configuration, since the seal portion 11 b is directly cooled by the cooling air, the cooling capacity of the discharge lamp 11 by the cooling fan 50 can be further improved.
　また、本実施の形態によれば、据置状態のとき、ランプダクト６０には、上方（＋Ｚ側）から下方（－Ｚ側）に向かって、第１の風路６１の導入口６１ａ、第３の風路６３の導入口６３ａ、第２の風路６２の導入口６２ａが順次配置されている。この構成によれば、導入口付近では、複数の風路が積層されるので、平面視におけるランプダクト６０の幅の増大が抑えられる。 Further, according to the present embodiment, in the stationary state, the lamp duct 60 is configured such that the inlet 61 a of the first air passage 61 and the third air passage 61 extend from the upper side (+ Z side) to the lower side (−Z side). The inlet 63 a of the air passage 63 and the inlet 62 a of the second air passage 62 are sequentially arranged. According to this configuration, since a plurality of air passages are stacked in the vicinity of the inlet, an increase in the width of the lamp duct 60 in plan view can be suppressed.
　また、本実施の形態によれば、風路切換部６５の一方の端部は、上下方向（Ｚ方向）へ回転自在にランプダクト６０に取り付けられている。この構成によれば、投射型映像表示装置１の姿勢が据置状態と天吊り状態との間で切り換わるとき、自重により風路切換部６５の他方の端部が上から下へ移動する。これにより、風路切換部６５は、塞ぐ導入口を適切に切り換えることが可能となる。 Further, according to the present embodiment, one end of the air passage switching unit 65 is attached to the lamp duct 60 so as to be rotatable in the vertical direction (Z direction). According to this configuration, when the posture of the projection type image display device 1 is switched between the stationary state and the ceiling suspended state, the other end of the air path switching unit 65 moves from the top to the bottom by its own weight. Thus, the air passage switching unit 65 can appropriately switch the introduction port to be closed.
　また、本実施の形態によれば、風路切換部６５の一方の端部には、第３の風路の導入口６３ａへ冷却風を導入する切欠部６６が形成されている。この構成によれば、第１の風路６１の導入口６１ａ又は第２の風路６２の導入口６２ａが塞がれても、第３の風路６３へ冷却風を導入させることが可能となる。また、これにより、それぞれの風路を互いに交差させる必要がないので、平面視におけるランプダクト６０の幅の増大が抑えられる。 Further, according to the present embodiment, at one end of the air passage switching portion 65, the notch portion 66 for introducing the cooling air to the inlet 63a of the third air passage is formed. According to this configuration, even if the inlet 61a of the first air passage 61 or the inlet 62a of the second air passage 62 is blocked, the cooling air can be introduced into the third air passage 63. Become. Moreover, since it is not necessary to cross each air path by this, the increase in the width | variety of the lamp duct 60 in planar view is suppressed.
　また、本実施の形態によれば、風路切換部６５は、一方の端部から他方の端部までの長さが、第１の風路６１の導入口６１ａの上下方向（Ｚ方向）の幅と第３の風路６３の導入口６３ａの上下方向（Ｚ方向）の幅との合計の長さより大きくなるように構成されている。また、風路切換部６５は、第２の風路６２の導入口６２ａの上下方向（Ｚ方向）の幅と第３の風路６３の導入口６３ａの上下方向（Ｚ方向）の幅との合計の長さよりも大きくなるように構成されている。 Further, according to the present embodiment, the air passage switching portion 65 has a length from one end to the other end in the vertical direction (Z direction) of the inlet 61 a of the first air passage 61. The total length of the width and the width in the vertical direction (Z direction) of the inlet 63 a of the third air passage 63 is larger than the total length. Further, the air passage switching unit 65 has a width in the vertical direction (Z direction) of the inlet 62 a of the second air passage 62 and a width in the vertical direction (Z direction) of the inlet 63 a of the third air passage 63. It is configured to be larger than the total length.
　この構成によれば、風路切換部６５の他方の端部の位置が変動しても、風路切換部６５の他方の端部は、一方の端部よりも風路の上流側に配置されることとなる。これにより、投射型映像表示装置１が姿勢を変更するとき、風路切換部６５が回転し易くなるので、風路の切換が容易となる。 According to this configuration, even if the position of the other end of the air path switching portion 65 is changed, the other end of the air path switching portion 65 is disposed on the upstream side of the air path than the one end. The Rukoto. As a result, when the projection type image display device 1 changes the posture, the air path switching unit 65 can be easily rotated, so that the air path can be easily switched.
　また、本実施の形態によれば、風路切換部６５は、ステンレスで形成されている。この構成によれば、風路切換部６５の材料の入手が容易であるので、風路切換部６５に要するコストを低減することが可能となる。 Further, according to the present embodiment, the air passage switching unit 65 is formed of stainless steel. According to this configuration, since it is easy to obtain the material of the air passage switching unit 65, the cost required for the air passage switching unit 65 can be reduced.
　また、本実施の形態によれば、ランプシェード７０は、第１の風路６１の導出口６１ｂから導出された冷却風の風向をリフレクター１５の反射面１５ｂに沿った方向へ調整する第１の風向調整部７１と、第２の風路６２の導出口６２ｂから導出された冷却風の風向をリフレクター１５の反射面１５ｂに沿った方向へ調整する第２の風向調整部７２と、を備えている。この構成によれば、導出口６１ｂ、６２ｂから導出された冷却風の風向を整えることができるので、冷却風をリフレクター１５の反射面１５ｂに沿わせやすくすることができる。これにより、バルブ１１ａに精度よく冷却風を当てることが可能となり、冷却ファン５０による放電ランプ１１の冷却能力を一層向上させることが可能となる。また、光源部１０の内部における冷却風の乱流の発生が抑制されるので、冷却ファン５０による放電ランプ１１の冷却能力を一層向上させることが可能となる。 Further, according to the present embodiment, the lamp shade 70 adjusts the wind direction of the cooling air drawn from the outlet 61 b of the first air passage 61 in the direction along the reflection surface 15 b of the reflector 15. A wind direction adjusting unit 71, and a second wind direction adjusting unit 72 for adjusting the wind direction of the cooling air drawn from the outlet 62b of the second air passage 62 in the direction along the reflecting surface 15b of the reflector 15; There is. According to this configuration, since the wind direction of the cooling air drawn from the outlet ports 61 b and 62 b can be adjusted, the cooling air can be easily made to follow the reflection surface 15 b of the reflector 15. Thus, the cooling air can be applied to the valve 11a with high accuracy, and the cooling capacity of the discharge lamp 11 by the cooling fan 50 can be further improved. In addition, since the generation of the turbulent flow of the cooling air inside the light source unit 10 is suppressed, it is possible to further improve the cooling capacity of the discharge lamp 11 by the cooling fan 50.
　また、本実施の形態によれば、第１の風向調整部７１は、第１の風路６１の導出口６１ｂから導出された冷却風の風向をリフレクター１５の反射面１５ｂに沿った方向へ変更する第１の風向変更面７１ａと、第１の風向調整部７１に隣接する領域のリフレクター１５の反射面１５ｂとほぼ平行に配置され、第１の風向変更面７１ａにおいて変更された冷却風の風向を安定させる第１の風向安定面７１ｂと、を有している。この構成によれば、冷却風の風向をさらに安定させることができるので、バルブ１１ａにさらに精度よく冷却風を当てることができ、冷却ファン５０による放電ランプ１１の冷却能力を一層向上させることが可能となる。また、光源部１０の内部における冷却風の乱流の発生がより一層抑制され、冷却ファン５０による放電ランプ１１の冷却能力をより一層向上させることが可能となる。 Further, according to the present embodiment, the first wind direction adjusting unit 71 changes the wind direction of the cooling air drawn from the outlet 61 b of the first air passage 61 in the direction along the reflection surface 15 b of the reflector 15. The first wind direction changing surface 71a and the wind direction of the cooling air, which is arranged substantially parallel to the reflecting surface 15b of the reflector 15 in the area adjacent to the first wind direction adjusting unit 71, and changed in the first wind direction changing surface 71a And the first wind direction stable surface 71b. According to this configuration, since the direction of the cooling air can be further stabilized, the cooling air can be applied to the valve 11a more accurately, and the cooling capacity of the discharge lamp 11 by the cooling fan 50 can be further improved. It becomes. Further, the generation of the turbulent flow of the cooling air inside the light source unit 10 is further suppressed, and the cooling capability of the discharge lamp 11 by the cooling fan 50 can be further improved.
　また、同様に、第２の風向調整部７２は、第２の風路６２の導出口６２ｂから導出された冷却風の風向をリフレクター１５の反射面１５ｂに沿った方向へ変更する第２の風向変更面７２ａと、第２の風向調整部７２に隣接する領域のリフレクター１５の反射面１５ｂとほぼ平行に配置され、第２の風向変更面７２ａにおいて変更された冷却風の風向を安定させる第２の風向安定面７２ｂと、を有している。この構成によれば、冷却風の風向をさらに安定させることができるので、バルブ１１ａにさらに精度よく冷却風を当てることができ、冷却ファン５０による放電ランプ１１の冷却能力を一層向上させることが可能となる。また、光源部１０の内部における冷却風の乱流の発生がより一層抑制され、冷却ファン５０による放電ランプ１１の冷却能力をより一層向上させることが可能となる。 Similarly, the second wind direction adjustment unit 72 changes the wind direction of the cooling air drawn from the outlet 62 b of the second air path 62 to a direction along the reflection surface 15 b of the reflector 15. The second change surface 72a is disposed substantially parallel to the reflection surface 15b of the reflector 15 in the area adjacent to the second wind direction adjustment unit 72, and the second change of the second wind direction change surface 72a stabilizes the wind direction of the cooling air And the wind direction stable surface 72b of According to this configuration, since the direction of the cooling air can be further stabilized, the cooling air can be applied to the valve 11a more accurately, and the cooling capacity of the discharge lamp 11 by the cooling fan 50 can be further improved. It becomes. Further, the generation of the turbulent flow of the cooling air inside the light source unit 10 is further suppressed, and the cooling capability of the discharge lamp 11 by the cooling fan 50 can be further improved.
　また、本実施の形態によれば、第１の風向調整部７１及び第２の風向調整部７２は、ランプシェード７０と一体で構成されている。この構成によれば、第１の風向調整部７１及び第２の風向調整部７２の製造及び取付に要する工程を省略することができるので、ランプシェード７０、第１の風向調整部７１及び第２の風向調整部７２の製造コストを低減することが可能となる。 Further, according to the present embodiment, the first wind direction adjusting unit 71 and the second wind direction adjusting unit 72 are configured integrally with the lamp shade 70. According to this configuration, it is possible to omit the steps required for manufacturing and mounting the first wind direction adjusting unit 71 and the second wind direction adjusting unit 72. Therefore, the lamp shade 70, the first wind direction adjusting unit 71, and the second It is possible to reduce the manufacturing cost of the wind direction adjustment unit 72 of
　また、本実施の形態によれば、ランプシェード７０、第１の風向調整部７１及び第２の風向調整部７２は、アルミニウムで形成されている。この構成によれば、ランプシェード７０、第１の風向調整部７１及び第２の風向調整部７２における放熱が促進されるので、放電ランプ１１の冷却がより一層促進される。 Further, according to the present embodiment, the lampshade 70, the first wind direction adjusting unit 71, and the second wind direction adjusting unit 72 are formed of aluminum. According to this configuration, the heat dissipation in the lamp shade 70, the first wind direction adjusting unit 71, and the second wind direction adjusting unit 72 is promoted, so the cooling of the discharge lamp 11 is further promoted.
　（実施の形態２）
　次に、実施の形態２について説明する。本実施の形態では、導入口付近における風路の配置が異なる場合について説明する。なお、以下では、すでに述べた内容と重複する箇所については、原則としてその説明を省略する。 Second Embodiment
Next, the second embodiment will be described. In the present embodiment, the case where the arrangement of air passages in the vicinity of the inlet is different will be described. In the following, in principle, descriptions of parts overlapping with the contents already described will be omitted.
　図１２は、本発明の実施の形態２に係る風路の導入口付近の拡大図である。図１２（ａ）は、据置状態における風路の導入口付近の拡大図である。図１２（ｂ）は、天吊り状態における風路の導入口付近の拡大図である。なお、図１２（ａ）、（ｂ）は、風路の上流側から見たときの導入口付近の図を示している。なお、図１２（ｂ）は、図１２（ａ）との差異を明確にするために、上下を反転させない状態で示されている。すなわち、図１２（ｂ）では、図示で上方が投射型映像表示装置１の下側、図示で下方が投射型映像表示装置１の上側である。 FIG. 12 is an enlarged view of the vicinity of the inlet of the air passage according to Embodiment 2 of the present invention. FIG. 12A is an enlarged view of the vicinity of the inlet of the air passage in the stationary state. FIG. 12 (b) is an enlarged view of the vicinity of the inlet of the air passage in the ceiling suspended state. 12 (a) and 12 (b) show the vicinity of the inlet as viewed from the upstream side of the air passage. Note that FIG. 12 (b) is shown in a state in which the upside down is not reversed in order to clarify the difference from FIG. 12 (a). That is, in FIG. 12B, the upper side in the figure is the lower side of the projection type video display device 1, and the lower side in the figure is the upper side of the projection type video display device 1.
　本実施の形態に係る投射型映像表示装置１は、実施の形態１におけるランプダクト６０が、以下で説明するランプダクト１６０に置き換えられた構成となっている。したがって、ランプダクト１６０の上流側は冷却ファン５０と接続されている。また、ランプダクト１６０の下流側はランプシェード７０側に配置されている。 The projection type image display apparatus 1 according to the present embodiment has a configuration in which the lamp duct 60 in the first embodiment is replaced with a lamp duct 160 described below. Therefore, the upstream side of the lamp duct 160 is connected to the cooling fan 50. Further, the downstream side of the lamp duct 160 is disposed on the lamp shade 70 side.
　据置状態のとき、ランプダクト１６０には、図１２（ａ）に示すように、上方（＋Ｚ側）から下方（－Ｚ側）に向かって、第１の風路１６１の導入口１６１ａ、第２の風路１６２の導入口１６２ａが順次配置されている。第３の風路１６３の導入口１６３ａは、図１２に示すように、第１の風路１６１の導入口１６１ａ及び第２の風路１６２の導入口１６２ａの側方に配置されている。なお、図１２では、第３の風路１６３の導入口１６３ａが、側方（例えばＹ方向）から見て、第１の風路１６１の導入口１６１ａ及び第２の風路１６２の導入口１６２ａに渡って形成されているが、第３の風路１６３は、このような構成に限定されるものではない。 In the stationary state, as shown in FIG. 12A, in the lamp duct 160, the inlet 161a of the first air passage 161, the second, from the upper side (+ Z side) to the lower side (−Z side). The inlets 162a of the air passage 162 are sequentially arranged. As shown in FIG. 12, the inlet 163 a of the third air passage 163 is disposed on the side of the inlet 161 a of the first air passage 161 and the inlet 162 a of the second air passage 162. In FIG. 12, the inlet 163 a of the third air passage 163 is viewed from the side (for example, the Y direction), and the inlet 161 a of the first air passage 161 and the inlet 162 a of the second air passage 162. However, the third air passage 163 is not limited to such a configuration.
　第１の風路１６１及び第２の風路１６２が隣接して配置されている領域では、第３の風路１６３は、例えば、第１の風路１６１及び第２の風路１６２の側方に形成されている。そして、第１の風路１６１及び第２の風路１６２が離間して配置されている領域では、第３の風路１６３は、例えば、第１の風路１６１及び第２の風路１６２の側方から、第１の風路１６１及び第２の風路１６２の間の領域に渡って形成される。これにより、ランプシェード７０付近では、据置状態において、上方（＋Ｚ側）から下方（－Ｚ側）に向けて、第１の風路１６１、第３の風路１６３、第２の風路１６２が順次配置される。 In a region where the first air passage 161 and the second air passage 162 are disposed adjacent to each other, the third air passage 163 is, for example, a side of the first air passage 161 and the second air passage 162. Is formed. Then, in the area where the first air passage 161 and the second air passage 162 are disposed apart from each other, the third air passage 163 is, for example, of the first air passage 161 and the second air passage 162. It is formed from the side across the area between the first air passage 161 and the second air passage 162. Thereby, in the stationary state, in the stationary state, the first air passage 161, the third air passage 163, and the second air passage 162 are directed from the upper side (+ Z side) to the lower side (−Z side) in the stationary state. Arranged sequentially.
　風路切換部１６５の一方の端部は、図１２に示すように、第１の風路１６１の導入口１６１ａと第２の風路１６２の導入口１６２ａとの間に配置されている。風路切換部１６５は、突部１６５ａ、１６５ｂを介して、上下方向（Ｚ方向）へ回転自在にランプダクト１６０に取り付けられている。風路切換部１６５の他方の端部は、第１の風路１６１の導入口１６１ａ及び第２の風路１６２の導入口１６２ａの上流側に配置されている。 One end of the air passage switching unit 165 is disposed between the inlet 161 a of the first air passage 161 and the inlet 162 a of the second air passage 162, as shown in FIG. 12. The air passage switching unit 165 is rotatably attached to the lamp duct 160 in the vertical direction (Z direction) via the protrusions 165a and 165b. The other end of the air passage switching portion 165 is disposed upstream of the inlet 161 a of the first air passage 161 and the inlet 162 a of the second air passage 162.
　据置状態のとき、風路切換部１６５の他方の端部は、図１２（ａ）に示すように、－Ｚ側に落下し、第２の風路１６２の導入口１６２ａが塞がれる。一方、天吊り状態のとき、風路切換部１６５の他方の端部は、図１２（ｂ）に示すように、＋Ｚ側に落下し、第１の風路１６１の導入口１６１ａが塞がれる。 In the stationary state, the other end of the air path switching unit 165 falls to the −Z side as shown in FIG. 12A, and the inlet 162 a of the second air path 162 is closed. On the other hand, in the ceiling-suspended state, the other end of the air passage switching portion 165 falls to the + Z side as shown in FIG. 12B, and the inlet 161a of the first air passage 161 is blocked. .
　風路切換部１６５は、一方の端部から他方の端部までの長さが、第１の風路１６１の導入口１６１ａの上下方向（Ｚ方向）の幅よりも大きくなるように構成されている。また、風路切換部１６５は、一方の端部から他方の端部までの長さが、第２の風路１６２の導入口１６２ａの上下方向（Ｚ方向）の幅よりも大きくなるように構成されている。 The air passage switching portion 165 is configured such that the length from one end to the other end is larger than the width in the vertical direction (Z direction) of the inlet 161 a of the first air passage 161. There is. Further, the air passage switching portion 165 is configured such that the length from one end to the other end is larger than the width in the vertical direction (Z direction) of the inlet 162 a of the second air passage 162. It is done.
　本実施の形態によれば、前述の実施の形態による効果に加え、以下の効果が得られる。本実施の形態によれば、据置状態のとき、ランプダクト１６０には、上方（＋Ｚ側）から下方（－Ｚ側）に向かって、第１の風路１６１の導入口１６１ａ、第２の風路１６２の導入口１６２ａが順次配置されている。そして、第３の風路１６３の導入口１６３ａは、第１の風路１６１の導入口１６１ａ及び第２の風路１６２の導入口１６２ａの側方に配置されている。 According to the present embodiment, the following effects can be obtained in addition to the effects of the above-described embodiment. According to the present embodiment, in the stationary state, the lamp duct 160 receives the inlet 161a of the first air passage 161 and the second wind from the upper side (+ Z side) to the lower side (−Z side). The inlets 162a of the passage 162 are sequentially arranged. The inlet 163 a of the third air passage 163 is disposed on the side of the inlet 161 a of the first air passage 161 and the inlet 162 a of the second air passage 162.
　この構成によれば、風路切換部１６５に第３の風路１６３のための切欠部を設けなくてもよいので、風路切換部１６５の構成を簡略化することが可能となる。また、第１の風路１６１及び第２の風路１６２が隣接して配置されるので、風路切換部１６５の一方の端部から他方の端部までの長さを短縮することが可能となる。 According to this configuration, since it is not necessary to provide the air passage switching portion 165 with a notch for the third air passage 163, the structure of the air passage switching portion 165 can be simplified. In addition, since the first air passage 161 and the second air passage 162 are disposed adjacent to each other, the length from one end of the air passage switching portion 165 to the other end can be shortened. Become.
　また、本実施の形態によれば、風路切換部１６５は、一方の端部から他方の端部までの長さが、第１の風路１６１の導入口１６１ａの上下方向（Ｚ方向）の幅よりも大きくなるように構成されている。また、風路切換部１６５は、一方の端部から他方の端部までの長さが、第２の風路１６２の導入口１６２ａの上下方向（Ｚ方向）の幅よりも大きくなるように構成されている。 Further, according to the present embodiment, the air passage switching portion 165 has a length from one end to the other end in the vertical direction (Z direction) of the inlet 161 a of the first air passage 161. It is configured to be larger than the width. Further, the air passage switching portion 165 is configured such that the length from one end to the other end is larger than the width in the vertical direction (Z direction) of the inlet 162 a of the second air passage 162. It is done.
　この構成によれば、風路切換部１６５の他方の端部の位置が変動しても、風路切換部１６５の他方の端部は、一方の端部よりも風路の上流側に配置されることとなる。これにより、投射型映像表示装置１が姿勢を変更するとき、風路切換部１６５が回転し易くなるので、風路の切換が容易となる。 According to this configuration, even if the position of the other end of the air path switching unit 165 changes, the other end of the air path switching unit 165 is disposed on the upstream side of the air path rather than the one end. The Rukoto. As a result, when the projection type image display device 1 changes the posture, the air path switching unit 165 can be easily rotated, so that the air path can be easily switched.
　なお、本発明は上記した実施の形態に限定されるものではなく、様々な変形例が含まれる。また、例えば、上記した実施の形態は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。 The present invention is not limited to the above-described embodiment, but includes various modifications. Further, for example, the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to one having all the described configurations.
　また、ある実施の形態の構成の一部を他の実施の形態の構成に置き換えることが可能であり、また、ある実施の形態の構成に他の実施の形態の構成を加えることも可能である。また、各実施の形態の構成の一部について、他の構成の追加、削除、置換をすることが可能である。なお、図面に記載した各部材や相対的なサイズは、本発明を分かりやすく説明するため簡素化・理想化しており、実装上はより複雑な形状となる場合がある。 Also, part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. . In addition, it is possible to add, delete, and replace other configurations in part of the configurations of the respective embodiments. The respective members and relative sizes described in the drawings are simplified and idealized in order to explain the present invention in an easy-to-understand manner, and may have a more complicated shape in mounting.
　１…投射型映像表示装置、１０…光源部、１１…放電ランプ、２０…光学ユニット、３０…表示素子、４０…投射光学系、５０…冷却ファン、６０…ランプダクト、６１…第１の風路、６２…第２の風路、６３…第３の風路、６１ａ、６２ａ、６３ａ…導入口、６１ｂ、６２ｂ、６３ｂ…導出口、６５…風路切換部、７０…ランプシェード、７１…第１の風向調整部、７２…第２の風向調整部、１６０…ランプダクト、１６１…第１の風路、１６２…第２の風路、１６３…第３の風路、１６１ａ、１６２ａ、１６３ａ…導入口、１６５…風路切換部 DESCRIPTION OF SYMBOLS 1 ... Projection type video display apparatus, 10 ... Light source part, 11 ... Discharge lamp, 20 ... Optical unit, 30 ... Display element, 40 ... Projection optical system, 50 ... Cooling fan, 60 ... Lamp duct, 61 ... 1st wind Road 62: second air path 63: third air path 61a, 62a, 63a: introduction port 61b, 62b, 63b: outlet port 65: air path switching portion 70: lamp shade 71: First wind direction adjusting unit, 72: second air direction adjusting unit, 160: lamp duct, 161: first air path, 162: second air path, 163: third air path, 161a, 162a, 163a ... Introduction port, 165 ... Air path switching part

Claims (11)

  1. 　ランプ光を発する放電ランプを内部に有する光源部と、
    　前記放電ランプを冷却する冷却風を供給する冷却ファンと、
    　前記冷却風を前記光源部の内部へ誘導するランプダクトと、
    　を備え、
    　前記ランプダクトは、
    　第１の姿勢のとき、前記光源部の内部における前記放電ランプの上方へ前記冷却風を導出する第１の風路と、
    　前記第１の姿勢の上下を反転させた第２の姿勢のとき、前記放電ランプの上方へ前記冷却風を導出する第２の風路と、
    　前記冷却風を導入する風路を切り換える風路切換部と、
    　を有し、
    　前記風路切換部は、前記第１の姿勢のとき前記第２の風路の導入口を塞ぎ、前記第１の風路へ前記冷却風を導入させ、前記第２の姿勢のとき前記第１の風路の導入口を塞ぎ、前記第２の風路へ前記冷却風を導入させる、
    　投射型映像表示装置。     A light source unit having therein a discharge lamp for emitting lamp light;
    A cooling fan for supplying a cooling air for cooling the discharge lamp;
    A lamp duct for guiding the cooling air to the inside of the light source unit;
    Equipped with
    The lamp duct is
    A first air path for leading the cooling air to the upper side of the discharge lamp in the light source unit in the first posture;
    A second air passage for leading the cooling air to the upper side of the discharge lamp in a second posture in which the first posture is reversed up and down;
    An air passage switching unit for switching an air passage for introducing the cooling air;
    Have
    The air passage switching unit closes the inlet of the second air passage in the first posture, and introduces the cooling air into the first air passage, and the first air passage switching portion in the second posture. Block the inlet of the air passage and introduce the cooling air into the second air passage,
    Projection type video display device.
  2. 　請求項１に記載の投射型映像表示装置において、
    　前記第１の姿勢のとき、前記ランプダクトには、上方から下方に向かって、前記第１の風路の前記導入口、前記第２の風路の前記導入口が順次配置され、
    　前記風路切換部の一方の端部は、前記第１の風路の前記導入口と前記第２の風路の前記導入口との間に配置され、上下方向へ回転自在に前記ランプダクトに取り付けられ、
    　前記風路切換部の他方の端部は、前記第１の風路の前記導入口及び前記第２の風路の前記導入口の上流側に配置されている、
    　投射型映像表示装置。     In the projection type video display device according to claim 1,
    In the first posture, the inlet of the first air passage and the inlet of the second air passage are sequentially disposed in the lamp duct from the upper side to the lower side,
    One end of the air passage switching unit is disposed between the inlet of the first air passage and the inlet of the second air passage, and is rotatable in the vertical direction in the lamp duct. Attached,
    The other end of the air path switching unit is disposed upstream of the inlet of the first air path and the inlet of the second air path.
    Projection type video display device.
  3. 　請求項２に記載の投射型映像表示装置において、
    　前記風路切換部は、前記一方の端部から他方の端部までの長さが、前記第１の風路の前記導入口の上下方向の幅、及び前記第２の風路の前記導入口の上下方向の幅よりも大きくなるように構成されている、
    　投射型映像表示装置。     In the projection type video display device according to claim 2,
    The air passage switching portion has a length from the one end to the other end, a width in the vertical direction of the inlet of the first air passage, and the inlet of the second air passage. Is configured to be larger than the vertical width of the
    Projection type video display device.
  4. 　請求項２に記載の投射型映像表示装置において、
    　前記ランプダクトは、前記ランプ光の出射側に配置された前記放電ランプのシール部へ向けて前記冷却風を導出する第３の風路を備え、
    　前記第３の風路の導入口は、前記第１の風路の前記導入口及び前記第２の風路の前記導入口の側方に配置されている、
    　投射型映像表示装置。     In the projection type video display device according to claim 2,
    The lamp duct includes a third air passage for guiding the cooling air toward the seal portion of the discharge lamp disposed on the light emission side of the lamp light,
    The inlet of the third air passage is disposed laterally to the inlet of the first air passage and the inlet of the second air passage.
    Projection type video display device.
  5. 　請求項１に記載の投射型映像表示装置において、
    　前記ランプダクトは、前記ランプ光の出射側に配置された前記放電ランプのシール部へ向けて前記冷却風を導出する第３の風路を備え、
    　前記第１の姿勢のとき、前記ランプダクトには、上方から下方に向かって、前記第１の風路の前記導入口、前記第３の風路の導入口、前記第２の風路の前記導入口が順次配置され、
    　前記風路切換部の一方の端部は、前記第３の風路の前記導入口に配置され、上下方向へ回転自在に前記ランプダクトに取り付けられ、前記第３の風路の前記導入口へ前記冷却風を導入する切欠部が形成され、
    　前記風路切換部の他方の端部は、前記第１の風路の前記導入口、前記第２の風路の前記導入口及び前記第３の風路の前記導入口の上流側に配置されている、
    　投射型映像表示装置。     In the projection type video display device according to claim 1,
    The lamp duct includes a third air passage for guiding the cooling air toward the seal portion of the discharge lamp disposed on the light emission side of the lamp light,
    In the first posture, the lamp duct is directed downward from above to the inlet for the first air passage, the inlet for the third air passage, and the second air passage. The inlets are arranged in sequence,
    One end of the air passage switching unit is disposed at the inlet of the third air passage, is rotatably attached to the lamp duct in the vertical direction, and is connected to the inlet of the third air passage. A notch for introducing the cooling air is formed;
    The other end of the air passage switching unit is disposed upstream of the inlet of the first air passage, the inlet of the second air passage, and the inlet of the third air passage. ing,
    Projection type video display device.
  6. 　請求項５に記載の投射型映像表示装置において、
    　前記風路切換部は、前記一方の端部から他方の端部までの長さが、前記第１の風路の前記導入口の上下方向の幅と前記第３の風路の前記導入口の上下方向の幅との合計の長さ、及び前記第２の風路の前記導入口の上下方向の幅と前記第３の風路の前記導入口の上下方向の幅との合計の長さよりも大きくなるように構成されている、
    　投射型映像表示装置。     In the projection type video display device according to claim 5,
    The air passage switching portion has a length from the one end to the other end of the width in the vertical direction of the inlet of the first air passage and the inlet of the third air passage. More than the total length of the width in the vertical direction and the total length of the width in the vertical direction of the inlet of the second air path and the width in the vertical direction of the inlet of the third air path Configured to be large,
    Projection type video display device.
  7. 　請求項１に記載の投射型映像表示装置において、
    　前記風路切換部は、ステンレスで形成されている、
    　投射型映像表示装置。     In the projection type video display device according to claim 1,
    The air passage switching unit is formed of stainless steel,
    Projection type video display device.
  8. 　請求項１に記載の投射型映像表示装置において、
    　前記光源部は、前記ランプ光の出射側が開口され、前記ランプ光を反射するリフレクターを有し、
    　前記ランプ光の前記出射側に、前記光源部と隣接して配置されたランプシェードを備え、
    　前記第１の風路の導出口は、前記第１の姿勢のとき、上方において前記ランプシェードと隣接する領域に配置され、
    　前記第２の風路の導出口は、前記第１の姿勢のとき、下方において前記ランプシェードと隣接する領域に配置され、
    　前記ランプシェードは、
    　前記第１の風路の前記導出口から導出された前記冷却風の風向を前記リフレクターの反射面に沿った方向へ調整する第１の風向調整部と、
    　前記第２の風路の前記導出口から導出された前記冷却風の風向を前記リフレクターの前記反射面に沿った方向へ調整する第２の風向調整部と、
    　を備えている、
    　投射型映像表示装置。     In the projection type video display device according to claim 1,
    The light source unit has a reflector that is open at the emission side of the lamp light and reflects the lamp light.
    A lamp shade disposed adjacent to the light source unit on the emission side of the lamp light;
    The outlet of the first air passage is disposed in an area adjacent to the lampshade at the upper side in the first posture,
    The outlet of the second air passage is disposed in an area adjacent to the lampshade at the lower side in the first posture,
    The lampshade is
    A first wind direction adjusting unit configured to adjust a wind direction of the cooling air derived from the outlet of the first air path in a direction along a reflection surface of the reflector;
    A second wind direction adjustment unit configured to adjust a wind direction of the cooling air derived from the outlet of the second air path in a direction along the reflection surface of the reflector;
    Equipped with
    Projection type video display device.
  9. 　請求項８に記載の投射型映像表示装置において、
    　前記第１の風向調整部は、前記第１の風路の前記導出口から導出された前記冷却風の前記風向を前記リフレクターの前記反射面に沿った方向へ変更する第１の風向変更面と、前記第１の風向調整部に隣接する領域の前記リフレクターの前記反射面とほぼ平行に配置された第１の風向安定面と、を有し、
    　前記第２の風向調整部は、前記第２の風路の前記導出口から導出された前記冷却風の前記風向を前記リフレクターの前記反射面に沿った方向へ変更する第２の風向変更面と、前記第２の風向調整部に隣接する領域の前記リフレクターの前記反射面とほぼ平行に配置された第２の風向安定面と、を有する、
    　投射型映像表示装置。     In the projection type video display device according to claim 8,
    A first wind direction changing surface that changes the wind direction of the cooling air drawn from the outlet of the first air path to a direction along the reflection surface of the reflector; A first wind direction stable surface disposed substantially parallel to the reflecting surface of the reflector in a region adjacent to the first wind direction adjusting unit;
    A second wind direction changing surface that changes the wind direction of the cooling air derived from the outlet of the second air path to a direction along the reflection surface of the reflector; A second wind direction stable surface disposed substantially parallel to the reflecting surface of the reflector in a region adjacent to the second wind direction adjusting unit;
    Projection type video display device.
  10. 　請求項８に記載の投射型映像表示装置において、
    　前記第１の風向調整部及び前記第２の風向調整部は、前記ランプシェードと一体で構成されている、
    　投射型映像表示装置。     In the projection type video display device according to claim 8,
    The first wind direction adjusting unit and the second wind direction adjusting unit are integrally configured with the lamp shade,
    Projection type video display device.
  11. 　請求項１０に記載の投射型映像表示装置において、
    　前記ランプシェード、前記第１の風向調整部及び前記第２の風向調整部は、アルミニウムで形成されている、
    　投射型映像表示装置。     The projection type image display apparatus according to claim 10,
    The lamp shade, the first wind direction adjusting unit, and the second wind direction adjusting unit are formed of aluminum.
    Projection type video display device.
PCT/JP2017/027460 2017-07-28 2017-07-28 Projection-type image display device WO2019021463A1 (en)

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