JP6288704B2 - Mounting structure, light source device, projection display device, and mounting method - Google Patents

Description

  The present invention provides a structure for attaching a fluorescent unit to a pedestal to which a light collecting element is fixed, a light source device having the structure, a projection display device having the light source device, and a pedestal to which the light collecting element is fixed. The present invention relates to a method for attaching a fluorescent unit.

A projection display device that projects an image is known. Further, it has been proposed to use a light source device including a laser light source for a projection display device.
A light source device disclosed in Patent Document 1 includes a laser light source, a fluorescent unit that emits fluorescence by receiving laser light emitted from the laser light source, and a light collecting unit provided on a travel path of the fluorescent light emitted from the fluorescent unit. An element. By attaching the fluorescent unit to the pedestal on which the light condensing element is fixed, the position of the fluorescent unit is prevented from being shifted with respect to the light condensing element.
The fluorescence emitted from the fluorescence unit travels toward the light collecting element while diffusing around the portion irradiated with the laser light. The condensing element collects and emits incident fluorescence in the optical axis direction.
According to Patent Document 1, since the fluorescence emitted from the light collecting element does not spread to the surroundings, the fluorescence proceeds while maintaining the brightness. Therefore, brighter fluorescence is emitted from the light source device. In a projection display device including such a light source device, relatively bright fluorescence is emitted to the display panel. Accordingly, the image projected from the projection display device becomes brighter.

International Publication No. 2011/092841

In the light source device disclosed in Patent Document 1, the amount of fluorescence reaching the light collecting element from the fluorescent unit increases as the gap between the fluorescent unit and the light collecting element becomes narrower. For these reasons, it is required to make the gap between the fluorescent unit and the light collecting element as narrow as possible.
However, when the gap between the fluorescent unit and the light collecting element is relatively narrow, the light collecting element and the fluorescent unit may come into contact when the fluorescent unit is attached to the pedestal. When the light collecting element and the fluorescent unit come into contact with each other, the light collecting element and the fluorescent unit are damaged. The scratch causes a decrease in the brightness of the fluorescence emitted by the fluorescent unit and a decrease in the light collection efficiency of the light collecting element. As a result, the brightness of the fluorescence emitted from the light source device decreases.
An object of the present invention is to provide an attachment structure, a light source device, and a light source device, which can attach a fluorescent unit to a pedestal in a state where the fluorescent unit and the condensing element are brought closer to each other and suppress contact between the fluorescent unit and the condensing element To provide an attachment method.

The mounting structure of the present invention includes a pedestal, a fluorescent unit, and a guide member. A light collecting element is fixed to the pedestal. The fluorescent unit is detachably attached to the pedestal. The guide member can position the fluorescent unit with respect to the pedestal to the first position and the second and third positions that bring the fluorescent unit closer to the light collecting element than the first position. The guide member includes a first guide part, a second guide part, and a third guide part. The first guide part guides the fluorescence unit to the first position and the second position. The second guide unit guides the fluorescent unit to the second position and the third position, and restricts the fluorescent unit guided to the second and third positions from approaching the light collecting element. The third guide part restricts the fluorescent unit guided to the third position from moving away from the light collecting element.
Moreover, the light source device of the present invention includes the above-described mounting structure and a laser light source that irradiates the fluorescent unit with laser light.
Further, the method of the present invention relates to a method of attaching a fluorescent unit to a pedestal on which a light collecting element is fixed. In this aspect, the present invention includes providing a pedestal, a fluorescent unit, and a guide member. The guide member can position the fluorescent unit with respect to the pedestal at a first position and a second position and a third position where the fluorescent unit is closer to the light collecting element than the first position. The guide member guides the fluorescent unit to the first position and the second position, and guides the fluorescent unit to the second position and the third position. And a third guide for restricting the fluorescent unit guided to the position 3 from approaching the condensing element, and a third guide for restricting the fluorescent unit guided to the third position from moving away from the condensing element. Part. In addition, the present invention guides the fluorescent unit from the first position to the second position using the first guide part, and the fluorescence guided to the second position using the second guide part. Guiding the unit to the third position, and restricting movement of the fluorescent unit guided to the third position using the second and third guide portions.

  According to the present invention, it is possible to attach the fluorescent unit to the pedestal in a state where the fluorescent unit and the condensing element are brought closer to each other and to suppress contact between the fluorescent unit and the condensing element.

It is a schematic plan view of a light source device provided with the attachment structure which concerns on embodiment of this invention. It is a perspective view of a fluorescence unit. It is an enlarged plan view of an attachment structure. FIG. 6 is a plan view of a state in which the fluorescent unit is removed from the pedestal, a perspective view seen from the side opposite to the fluorescent screen, and a perspective view seen from the fluorescent screen side. FIG. 4 is a plan view of a state in which the fluorescent unit is placed at a first position, a perspective view seen from the side opposite to the fluorescent screen, and a perspective view seen from the fluorescent screen side. It is the top view in the state where the fluorescence unit was put in the 2nd position, the perspective view seen from the side opposite to the phosphor screen, and the perspective view seen from the phosphor screen side. It is the top view of the state in which the fluorescence unit was put in the 3rd position, the perspective view seen from the side opposite to the phosphor screen, and the perspective view seen from the phosphor screen side. It is a figure which shows typically the structure of a projection type display apparatus provided with the light source device shown by FIG.

Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view of a light source device including an attachment structure according to this embodiment. As shown in FIG. 1, the light source device 1 includes a first blue laser light source 2, a fluorescent unit 3, a condensing element 4, and a pedestal 5 to which the fluorescent unit 3 and the condensing element 4 are attached. Including.
The first blue laser light source 2 can emit a relatively bright blue laser light. The blue laser light emitted from the first blue laser light source 2 enters the light tunnel 9 through the first to third lenses 6, 7, and 8. Thereafter, the blue laser light is emitted from the light tunnel 9, passes through the fourth lens 10, and reaches the first dichroic mirror 11.
The first dichroic mirror 11 has a characteristic of reflecting blue laser light. Therefore, the blue laser light that has reached the first dichroic mirror 11 is reflected by the first dichroic mirror 11 and is incident on the condensing element 4. Then, the blue laser light emitted from the condensing element 4 travels to the fluorescent unit 3.

The condensing element 4 includes first to third condensing lenses 13, 14, 15 fixed to the pedestal 5 via the lens holder 12. And the condensing element 4 functions as an element which collects a light ray. Specifically, when diverging light enters the condensing element 4, the condensing element 4 converts the divergent light into parallel light parallel to the optical axis of the condensing element 4. Further, when the parallel light is incident on the light collecting element 4, the light collecting element 4 collects the parallel light at a certain point on the optical axis of the light collecting element 4.
In the present embodiment, the condensing element 4 is composed of three condensing lenses 13, 14, and 15, but is not limited to this form. The condensing element 4 may be composed of one or two condensing lenses, or may be composed of four or more condensing lenses.

FIG. 2 is a perspective view of the fluorescent unit 3. As shown in FIG. 2, the fluorescent unit 3 includes a fluorescent wheel 17 including a fluorescent screen 16, a rotating unit 18 that supports the fluorescent wheel 17 and rotates the fluorescent wheel 17, and a fluorescent wheel 17 of the rotating unit 18. Includes a support member 19 fixed to the opposite side. An example of the rotating means 18 is a motor. The support member 19 is preferably a member that functions as a heat dissipation unit. In the present embodiment, a heat sink is used as the support member 19.
For example, the fluorescent screen 16 receives blue laser light and emits fluorescence in a red to green wavelength band including a yellow wavelength band (hereinafter referred to as yellow fluorescence). Such a phosphor screen 16 is formed by fixing a phosphor that emits yellow fluorescence upon receiving laser light to the phosphor wheel 17.
The phosphor emits heat when it emits fluorescence upon receiving laser light. By rotating the fluorescent wheel 17 using the rotating means 18, the region irradiated with the laser light is moved, and the local temperature rise of the phosphor can be suppressed.
Further, since the support member 19 (heat sink) is fixed to the rotation means 18, heat generated by the fluorescent wheel 17 and the rotation means 18 is transmitted to the support member 19 (heat sink) via the rotation means 18 or directly. Therefore, the temperature rise of the fluorescent wheel 17 and the rotation means 18 can be suppressed.

Refer to FIG. 1 again. The fluorescent unit 3 is detachably formed on the base 5. In a state where the fluorescent unit 3 is attached to the pedestal 5, the fluorescent screen 16 faces the light collecting element 4. Therefore, the blue laser light emitted from the condensing element 4 reaches the fluorescent screen 16 of the fluorescent unit 3. The phosphor screen 16 emits yellow fluorescence by receiving blue laser light.
Since the condensing element 4 faces the phosphor screen 16, the fluorescence emitted from the phosphor screen 16 travels toward the condensing element 4 while spreading radially around the portion irradiated with the blue laser light. Fluorescence incident on the condensing element 4 is collected in the optical axis direction of the condensing element 4 using the condensing element 4, and becomes parallel light that travels substantially parallel to the optical axis toward the first dichroic mirror 11. .

The first dichroic mirror 11 has a characteristic of transmitting yellow fluorescence. Accordingly, the yellow fluorescence incident on the first dichroic mirror 11 is transmitted through the first dichroic mirror. Thereafter, the yellow fluorescence reaches the second dichroic mirror 21 through the fifth lens 20.
The second dichroic mirror 21 has a characteristic of reflecting yellow fluorescence. Therefore, the yellow fluorescence that has reached the second dichroic mirror 21 is reflected by the second dichroic mirror 21, passes through the sixth lens 22, and is emitted from the light emitting unit 23 of the light source device 1.
Since the first blue laser light source 2 can emit a relatively bright blue laser, the light source device 1 can emit a relatively bright yellow fluorescence.
The light source device 1 also includes a second blue laser light source 24 that emits blue laser light. The blue laser light emitted from the second blue laser light source 24 reaches the second dichroic mirror 21 through the seventh to tenth lenses 25, 26, 27 and 28.
The second dichroic mirror 21 has a characteristic of transmitting blue laser light. Therefore, the blue laser light that has reached the second dichroic mirror 21 passes through the second dichroic mirror 21, passes through the sixth lens 22, and is emitted from the light emitting unit 23 of the light source device 1.
As described above, the light source device 1 can emit not only relatively bright yellow fluorescence but also relatively bright blue laser light.

Next, an attachment structure for attaching the fluorescent unit 3 to the pedestal 5 will be described with reference to FIG. 2 or FIG. FIG. 3 is an enlarged plan view of the mounting structure according to the present embodiment.
As shown in FIGS. 2 and 3, the mounting structure 29 includes a pedestal 5, a fluorescent unit 3, and a guide member 30 that positions the fluorescent unit to the first, second, and third positions with respect to the pedestal 5. .
The fluorescent unit 3 is attached to and detached from the pedestal 5 at the first position. The second and third positions bring the fluorescent unit 3 closer to the condensing element 4 than the first position. A direction in which the first position and the second position are arranged is referred to as a first direction X. The second and third positions are aligned in a second direction Y that intersects the first direction X.

The guide member 30 includes a first guide part 30a, a second guide part 30b, and a third guide part 30c.
The first guide part 30a guides the fluorescent unit 3 to the first position and the second position. The second guide part 30b guides the fluorescent unit 3 to the second position and the third position, and restricts the fluorescent unit 3 guided to the second and third positions from approaching the light collecting element 4. To do. The third guide part 30 c restricts the fluorescent unit 3 guided to the third position from moving away from the light collecting element 4.
In the present embodiment, the guide member 30 is provided in the fluorescent unit 3. An L-shaped hole 31 is formed in the guide member 30. The hole 31 includes a first elongated hole portion 32 extending in the first direction X and a second elongated hole portion 33 extending in the second direction Y. A part of the second elongated hole portion 33 overlaps with the first elongated hole portion 32.

The inner surface of the hole 31 functions as the first, second, and third guide portions 30a, 30b, and 30c. The guide member 30 regulates the movement of the fluorescent unit 3 relative to the pedestal 5 by the first, second, and third guide portions 30 a, 30 b, and 30 c coming into contact with the protrusions 34 provided on the pedestal 5.
Of the inner side surface of the first elongated hole portion 32, two surfaces extending along the first direction X function as the first guide portion 30a. In a state where the fluorescent unit 3 is in the first position, the protrusion 34 is located in a portion of the first elongated hole portion 32 that is closest to the light collecting element 4.
Since the first guide portion 30 a extends along the first direction X, the protrusion 34 is guided in the first direction X. Therefore, the fluorescent unit 3 is guided to the first position and the second position.
The surface located in the condensing element 4 side among the inner surfaces of the 2nd long hole part 33 is formed as the 2nd guide part 30b. In a state where the fluorescent unit 3 is in the second and third positions, the second guide portion 30b contacts the protrusion 34.
The fluorescent unit 3 does not move in the direction approaching the light condensing element 4 by the second guide portion 30 b coming into contact with the protrusion 34. In other words, the movement of the fluorescent unit 3 guided to the second and third positions in the direction approaching the light collecting element 4 is restricted using the second guide portion 30b.
The surface located on the opposite side to the condensing element 4 among the inner surfaces of the 2nd long hole part 33 is formed as the 3rd guide part 30c. In a state where the fluorescent unit 3 is in the third position, the third guide portion 30 c comes into contact with the protrusion 34.
The fluorescent unit 3 does not move in the direction away from the light condensing element 4 by the protrusion 34 coming into contact with the third guide portion 30c. The movement of the protrusion 34 in the first direction X is restricted. That is, the movement of the fluorescent unit 3 guided to the third position in the direction away from the light collecting element 4 is restricted by using the third guide portion 30c.

The present invention is not limited to the form in which the guide member 30 is provided in the fluorescent unit 3. As a modification of the embodiment, the guide member 30 may be provided on the base 5. In the form in which the guide member 30 is provided on the pedestal 5, the movement of the fluorescent unit relative to the pedestal is restricted by the guide member 30 coming into contact with the fluorescent unit 3. Further, the protrusion 34 may be provided on the fluorescent unit 3. In the form in which the protrusion 34 is provided on the fluorescent unit 3, the movement of the fluorescent unit with respect to the pedestal is restricted by the guide member 30 coming into contact with the protrusion 34 provided on the fluorescent unit 3.
Further, the present invention is not limited to the form in which the inner surface of the L-shaped hole is used for the first, second, and third guide portions 30a, 30b, and 30c. As a modification of the embodiment, rails may be used for the first, second, and third guide portions 30a, 30b, and 30c. In the form in which the rail is used for the first, second, and third guide portions 30a, 30b, and 30c, the movement of the fluorescent unit with respect to the pedestal is restricted by the fluorescent unit 3 or the pedestal 5 moving along the rail. The

A procedure for attaching the fluorescent unit 3 to the pedestal 5 will be described with reference to FIGS. 4 to 7. 4 (a), 4 (b) and 4 (c) are respectively a plan view of the state in which the fluorescent unit 3 is removed from the pedestal 5, and a perspective view as viewed from the side opposite to the fluorescent screen 16. It is the perspective view seen from the fluorescent screen 16 side.
As shown in FIG. 4, when the prepared fluorescent unit 3 is attached to the pedestal 5, the fluorescent unit 3 is disposed above the pedestal 5. The fluorescent unit 3 is sufficiently separated from the condensing element 4 so that the fluorescent unit 3 and the condensing element 4 do not contact each other.
First, the user places the fluorescent unit 3 in the first position, and inserts the protrusion 34 into an L-shaped hole formed in the guide member 30. 5 (a), 5 (b), and 5 (c) are plan views of the fluorescent unit 3 placed in the first position, and perspective views as viewed from the side opposite to the fluorescent screen 16. FIG. It is the figure and the perspective view seen from the fluorescent screen 16 side.
In a state where the fluorescent unit 3 is in the first position, the protrusion 34 is located in the L-shaped hole closest to the light collecting element 4. In other words, the fluorescent unit 3 is located farthest from the light collecting element 4 in a state where the protrusion 34 is inserted into the L-shaped hole. Since the fluorescent unit 3 is placed at the first position where the fluorescent unit 3 and the condensing element 4 are sufficiently separated, the contact between the fluorescent unit 3 and the condensing element 4 is suppressed.

Subsequently, the user moves the fluorescent unit 3 from the first position to the second position, and brings the fluorescent unit 3 closer to the light collecting element 4. 6 (a), 6 (b), and 6 (c) are respectively a plan view of the state in which the fluorescent unit 3 is in the second position, and a perspective view as viewed from the side opposite to the fluorescent screen 16. It is the perspective view seen from the fluorescent screen 16 side.
As the fluorescent unit 3 moves from the first position to the second position, the protrusion 34 contacts the second guide portion 30b. Therefore, the fluorescence unit 3 does not move in the direction closer to the light collecting element 4 from the second position. Therefore, the phosphor screen 16 can be brought close to the light collector 4 without bringing the phosphor screen 16 and the light collector 4 into contact with each other.
Next, the user moves the fluorescent unit 3 from the second position to the third position. 7 (a), 7 (b) and 7 (c) are respectively a plan view showing a state in which the fluorescent unit 3 is in the third position, and a perspective view seen from the side opposite to the fluorescent screen 16. It is the perspective view seen from the fluorescent screen 16 side.
As the fluorescent unit 3 moves from the second position to the third position, the protrusion 34 comes into contact with the second and third guide portions 30b and 30c. Therefore, the fluorescent unit 3 does not move from the third position in the direction approaching the light collecting element 4 and the direction moving away from the light collecting element 4. Therefore, the fluorescent unit 3 can be attached at a position relatively close to the light collecting element 4.

Thus, according to the present embodiment, the fluorescent unit 3 is attached to and detached from the pedestal 5 at the first position relatively away from the light collecting element 4. Therefore, the contact between the fluorescent unit 3 and the condensing element 4 can be suppressed.
Further, when the fluorescent unit 3 is moved from the first position to the second position, the second guide portion 30b regulates the movement of the fluorescent unit 3. Therefore, even if the fluorescent unit 3 is brought close to the light collecting element 4, the contact between the fluorescent unit 3 and the light collecting element 4 is suppressed.
Furthermore, in a state where the fluorescent unit 3 is in the third position, the second and third guide portions 30b and 30c regulate the movement of the fluorescent unit 3. Therefore, the fluorescent unit 3 can be attached to the base 5 with the fluorescent unit 3 and the condensing element 4 being closer to each other, and contact between the fluorescent unit 3 and the condensing element 4 can be suppressed.

In particular, the rotating means 18 such as a motor is more likely to fail than the light collecting element 4, and the replacement frequency of the fluorescent unit 3 is relatively high. Since the contact between the fluorescent unit 3 and the condensing element 4 when the fluorescent unit 3 is attached to the base 5 can be suppressed, the fluorescent unit 3 can be replaced more easily.
Since the contact between the fluorescent unit 3 and the condensing element 4 is suppressed, the fluorescent unit 3 and the condensing element 4 are prevented from being damaged. As a result, the fluorescence emitted by the fluorescence unit 3 and the fluorescence emitted by the light collecting element 4 become brighter, and the light source device 1 can emit brighter fluorescence.
Since the gap between the fluorescent unit 3 and the light collecting element 4 can be narrowed, the amount of fluorescence reaching the light collecting element 4 from the fluorescent unit 3 increases. Therefore, the fluorescence emitted from the light source device 1 becomes brighter.

Please refer to FIGS. 1 to 4 again. The attachment structure 29 may further include fixing means 35 for fixing the fluorescent unit 3 in the third position to the base 5. In this embodiment, a screw is used as the fixing means.
The fixing means 35 will be specifically described. A through hole 36 is formed in the fluorescent unit 3, and a through hole 37 is formed in the base 5. In a state where the fluorescent unit 3 is in the third position, the through hole 36 and the through hole 37 communicate with each other. By inserting screws as fixing means 35 into the through holes 36 and 37, the fluorescent unit 3 is firmly fixed by the pedestal 5 at the third position.
The fixing means 35 is not limited to a screw and may be a bolt and a nut.
Further, the protrusion 34 may be used together as the fixing means 35. For example, a part of the protrusion 34 is formed into a bolt shape and fixed to the protrusion 34 with a nut at the third position.
In the present embodiment, the user can see the gap between the fluorescent unit 3 and the light collecting element 4, the fixing means 35, the protrusion 34, and the guide member 30 simultaneously by looking at the light source device 1 from above. Therefore, the work of attaching the fluorescent unit 3 to the pedestal 5 becomes easier.

The attachment structure 29 may further include pressing means for pressing the fluorescent unit 3 in a direction away from the light collecting element 4 or in a direction approaching the light collecting element 4 in a state where the fluorescent unit 3 is in the third position.
The projection 34 is pressed against the third guide portion 30c by pressing the fluorescent unit 3 away from the light collecting element 4. A frictional force is generated between the protrusion 34 and the third guide portion 30c, and the movement of the fluorescent unit 3, particularly the movement in the second direction Y is suppressed.
The projection 34 is pressed against the second guide portion 30b by pressing the fluorescent unit 3 in a direction approaching the light collecting element 4. A frictional force is generated between the protrusion 34 and the second guide portion 30b, and movement of the fluorescent unit 3, particularly movement in the second direction Y is suppressed.
By suppressing the movement of the fluorescent unit 3 in the second direction Y, the user does not need to hold down the fluorescent unit 3 when fixing the fluorescent unit 3 to the pedestal 5 using the fixing means 35. Therefore, it becomes easier to fix the fluorescent unit 3 using the fixing means 35.

The attachment structure 29 according to the present embodiment further includes a wall 38 fixed to the pedestal 5. A penetration part 39 is formed in the wall 38. The penetration 39 is a notch or hole through the space separated by the wall 38. In a state where the fluorescent unit 3 is in the third position, the wall 38 is positioned between the fluorescent wheel 17 and the support member 19, and the rotating means 18 is passed through the through portion 39.
Since the wall 38 is located between the fluorescent wheel 17 and the support member 19, the heat released from the support member 19 is less likely to travel from the support member 19 to the fluorescent wheel 17. Therefore, the temperature rise of the support member 19 and the rotation means 18 is suppressed.
The attachment structure 29 further includes a light shielding member 40 positioned in the gap between the support member 19 and the wall 38 in a state where the fluorescent unit 3 is in the third position. By providing the light shielding member in the gap, the laser beam is less likely to leak from the gap.

It is preferable that an elastic member is used as the light shielding member 40 and the light shielding member 40 is compressed in the first direction X in a state where the fluorescent unit 3 is in the third position. Since the restoring force of the light shielding member 40 presses the fluorescent unit 3 in a direction away from the light collecting element 4, the light shielding member 40 functions as the aforementioned pressing means.
The light source device 1 may further include a blower 41 that sends cooling air to the phosphor screen 16 of the phosphor wheel 17. The gap A is preferably set to about 1.5 mm so that sufficient cooling air flows through the gap between the phosphor screen 16 and the light collecting element 4. If the interval A is narrower, more light can be incident on the condensing element 4, but if it is too narrow, sufficient cooling air does not flow to the heat generating portion of the phosphor screen and the cooling effect is reduced.
The gap B between the blower 41 and the fluorescent wheel 17 is, for example, 2.5 mm, but is not limited thereto. The interval B may be narrower than 2.5 mm. For example, the interval B may be in the range of 0.5 mm to 1.0 mm.

FIG. 8 is a diagram schematically showing an example of a projection display device including the light source device 1 shown in FIG. The projection display device 42 includes a display element 43, an illumination optical unit 44 that irradiates the light emitted from the light source device 1 to the display element 43, and a projection optical unit 45 that projects the light emitted from the display element 43. .
The display element 43 is, for example, a DMD (Digital Mirror Device) or a liquid crystal panel, and modulates irradiated light according to a video signal to generate image light. The illumination optical unit 44 includes, for example, a rod integrator 46, a reflection mirror 47, and a prism 48. The projection optical unit 45 includes, for example, a prism 48 and a projection lens 49. The image light generated using the display element 43 is enlarged and projected onto the screen 50 via the projection lens 49.
According to the present invention, since the light source device 1 emits brighter light, the projection display device 42 can project brighter image light.
While the present invention has been described with reference to the embodiments and examples, the present invention is not limited to the above embodiments and examples. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Light source device 2 1st blue laser light source 3 Fluorescence unit 4 Condensing element 5 Base 13 1st condensing lens 14 2nd condensing lens 15 3rd condensing lens 16 Phosphor screen 17 Fluorescent wheel 18 Rotating means 19 Support member 29 Mounting structure 30 Guide member 30a First guide part 30b Second guide part 30c Third guide part 34 Projection 38 Wall 39 Penetration part 40 Light shielding member 41 Blower

Claims (10)

A pedestal to which the condensing element is fixed;
A fluorescent unit detachably attached to the pedestal;
A guide member capable of positioning the fluorescent unit with respect to the pedestal to a first position and a second position and a third position that bring the fluorescent unit closer to the light collecting element than the first position. And comprising
The guide member guides the fluorescent unit to a first guide portion that guides the fluorescent unit to the first position and the second position, and to the second position and the third position. And a second guide part for restricting the fluorescent unit guided to the second and third positions from approaching the condensing element, and the fluorescent unit guided to the third position to collect the light. And a third guide part for restricting the distance from the element. The guide member has a first elongated hole portion extending in a first direction from the first position toward the second position, and a part of the guide member overlaps with the first elongated hole portion, and the second position. And an L-shaped hole including a second elongated hole portion extending in a second direction from the first to the third position,
The first guide portion is an inner surface along the first direction of the inner surface of the first elongated hole portion, and the second guide portion is an inner surface of the second elongated hole portion. Of these, it is an inner surface located on the side of the light condensing element, and the third guide portion is an inner surface located on the side opposite to the light condensing element of the inner surface of the second elongated hole portion. The mounting structure according to claim 1.   The mounting structure according to claim 1, wherein the fluorescent unit includes a fluorescent wheel and a rotating unit that supports the fluorescent wheel and rotates the fluorescent wheel. A wall further including a penetrating portion and fixed to the pedestal;
The fluorescent unit further comprises a support member fixed to the rotating means on the side opposite to the fluorescent wheel,
The said fluorescent unit is in the said 3rd position, The said wall is located between the said fluorescent wheel and the said supporting member, and the said fluorescent unit is penetrated by the said penetration part. Mounting structure.   The mounting structure according to claim 4, further comprising a light shielding member positioned in a gap between the support member and the wall in a state where the fluorescent unit is in the third position. The light shielding member has elasticity;
The said light shielding member is compressed in the direction in which the said fluorescence unit approaches the said condensing element between the said supporting member and the said wall in the state in which the said fluorescence unit exists in the said 3rd position. Mounting structure.   The mounting structure according to claim 1, further comprising a fixing unit that fixes the fluorescent unit to the pedestal. The mounting structure according to any one of claims 1 to 7,
And a laser light source for irradiating the fluorescent unit with laser light. The light source device according to claim 8;
A display element that modulates light emitted from the fluorescent unit of the light source device to form image light;
A projection display device comprising: a projection lens that magnifies and projects the image light. A pedestal to which a condensing element is fixed, a fluorescent unit, and a guide member, wherein the fluorescent unit is arranged with respect to the pedestal, the first position, and the fluorescent unit is condensed with respect to the first position. A first guide portion that is positionable to a second position and a third position that are close to the element and that guides the fluorescent unit to the first position and the second position; and A second guide part for guiding the fluorescent unit to a position and the third position and restricting the fluorescent unit guided to the second and third positions from approaching the light collecting element; Providing a guide member including a third guide part for restricting the fluorescent unit guided to the third position from moving away from the light collecting element;
Guiding the fluorescent unit from the first position to the second position using the first guide part;
Guiding the fluorescent unit guided to the second position to the third position using the second guide part;
Regulating the movement of the fluorescent unit guided to the third position by using the second and third guide portions.

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