WO2017047126A1

WO2017047126A1 - Projection device

Info

Publication number: WO2017047126A1
Application number: PCT/JP2016/055624
Authority: WO
Inventors: 信杉山; 航佐藤
Original assignee: シャープ株式会社
Priority date: 2015-09-15
Filing date: 2016-02-25
Publication date: 2017-03-23

Abstract

A projection device (1) which uses a semi-translucent housing as a screen is provided with light blocking members (12L, 12R) for suppressing light from a projector (10) from reaching a non-projection area which is different from a projection area (5) of a housing (2a) on which an image is projected by the projector (10), such that the quality of the image projected on the screen is maintained. Further, the projection device is configured such that: a projector having a projection lens is provided inside a case; a fan for cooling the projector by generating an airflow that is introduced from an inlet port and discharged from an exhaust port is provided inside the case; the fan is disposed such that the projector is positioned on the rotation axis of the fan, causing the airflow to pass the surface of the projection lens along the surface. As a result, the adhesion of dust and the like to the projection lens is reduced and maintenance is improved without increasing the number of components or cost.

Description

Projection device

The present invention relates to a projection apparatus that projects and displays an image from a projection unit.

In recent years, development of robot technology capable of advanced communication with human beings has progressed. In human communication, facial expressions of each other are important. Therefore, by appropriately controlling the facial expression of a robot having a communication function with a human, communication with the human can be made more sophisticated and smooth.

As an example of a technique related to a robot apparatus that can change the facial expression of a robot, a technique described in Patent Document 1 can be cited. The robot apparatus described in Patent Document 1 is provided with a projector (projection unit) for projecting a facial expression on the inside of the body portion by attaching a head portion made of a translucent spherical screen member to the body portion. ing. Then, image light is emitted from the projector to the inner peripheral surface of the screen member, a facial expression video is projected onto the head, and the facial expression and / or orientation of the face is changed by changing the video applied to the projector.

In recent years, pet-type robots that heal and entertain users and life support robots that perform housework and nursing care have been developed. Some of these robots have a voice recognition function and can communicate with the user. For example,

Patent Documents

2 and 4 describe a robot that changes facial expressions according to output voice. In this case, a projector is provided inside the housing of the robot, and various face images are projected from the inside of the robot using the projector.

On the other hand, there are rear projector type televisions and displays as other devices incorporating a projector. The projector is configured to be cooled by a fan because a light source or the like becomes considerably hot during use. For example, Patent Document 5 describes a rear projection device including two fans (air cooling devices).

Japanese Patent Publication “Japanese Patent Laid-Open Publication No. 2006-212717 (Released on August 17, 2006)” Japanese Patent Publication “JP 2006-043780 (published February 16, 2006)” Japanese Patent Publication “JP-A-8-314401 (published on November 29, 1996)” Japanese Patent Publication “Japanese Patent Laid-Open No. 2012-178092 (published on September 13, 2012)” Japanese Patent Publication “Japanese Patent Laid-Open No. 2008-102401 (published May 1, 2008)”

However, in the conventional technology as described above, when the light emitted from the projector hits the screen member and other members and is reflected, the light reaches a position different from the screen member and shines, or the color of the members inside the robot apparatus Or the shape may be seen through from the outside of the robot apparatus, which may impair the quality of the image projected on the screen unit.

Also, as in

Patent Documents

2 and 4, by incorporating a projector, it is possible to easily give the robot various expressions. However,

Patent Documents

2 and 4 do not take into consideration that dust or the like adheres to the projection lens of the projector.

In the projector, when dust or the like adheres to the projection lens, the image flickers. Therefore, the projection lens needs to be kept clean. However, in the case of a built-in projector, it is not easy to wipe the projection lens with a cloth or the like, and maintenance is required. Therefore, in order to reduce the number of times of maintenance, it is desirable to adopt a configuration in which dust or the like is difficult to adhere to the projection lens.

Such a problem that dust or the like adheres to the projection lens also occurs in the rear projection apparatus described in Patent Document 5. However, even in the above Patent Document 5, no consideration is given to the fact that dust or the like adheres to the projection lens of the projector and the quality of the projected image is impaired.

The present invention has been made to solve the above-described problems, and an object thereof is to maintain the quality of an image projected on the screen in a projection apparatus using a semi-transparent casing as a screen. An object of the present invention is to provide a projection apparatus that can perform the above-described operation.

In order to solve the above problems, a projection device according to one embodiment of the present invention projects a semi-transparent housing through which a part of light passes from the inside to the outside, and projects an image from the inside to the housing. A projection unit; and a light shielding member that suppresses light from the projection unit from reaching a non-projection area of the casing that is different from a projection area of the casing on which the image is projected by the projection unit. .

Alternatively, in order to solve the above-described problem, a projection apparatus according to one embodiment of the present invention is a projection apparatus including a projector having a projection lens inside a casing, and the projector is provided inside the casing. A fan that cools the projector by generating an airflow that is introduced from the formed air inlet and discharged from an air outlet formed in the housing; and the fan is placed on a rotation axis of the fan. The airflow passes through the surface of the projection lens along the surface.

According to one aspect of the present invention, there is an effect that the quality of an image projected on a screen can be maintained.

In addition, according to another aspect of the present invention, it is possible to reduce the adhesion of dust and the like to the projection lens without increasing the number of parts and increasing the cost by using the essential components together, thereby improving maintainability. There is an effect that an excellent projection device can be provided.

It is a front view which shows an example of the external appearance of the interactive robot in one Embodiment of this invention. It is sectional drawing which shows an example of a principal part structure inside an interactive robot. It is a figure for demonstrating the structure of the optical system support member with which an interactive robot is provided. It is sectional drawing which shows the other example of the shape of the light-shielding member with which an interactive robot is provided. It is a front view of the interactive robot which concerns on other one Embodiment of this invention. It is a rear view of the interactive robot. It is a longitudinal cross-sectional view of the front of the interactive robot. It is a longitudinal cross-sectional view of the back surface of the interactive robot. It is a longitudinal cross-sectional view of the side of the interactive robot. It is the perspective view which looked at the said robot of the state which removed the case from the front side. It is drawing which added the flow of the air by the optical path of the light radiate | emitted from a projector, and an air cooling device to the longitudinal cross-sectional view of the side surface of FIG.

Hereinafter, embodiments of the present invention will be described in detail.

Embodiment 1
First, an embodiment of the present invention will be described in detail with reference to FIGS.

(Appearance of interactive robot 1)
FIG. 1 is a front view showing an example of the appearance of the interactive robot 1 (projection apparatus) in the present embodiment.

The interactive robot 1 has a shape of a snowman (a shape having a curved surface), a hemispherical housing 2a corresponding to the head of the snowman, a hemispherical housing 2b corresponding to the trunk of the snowman, and A collar portion 8 corresponding to a snowman collar is provided. The housing 2a is made of a semi-translucent material that transmits part of light from the inside to the outside, while the housing 2b is made of a light-shielding material. Note that the housing 2b may also be formed using a semi-translucent material like the housing 2a.

The housing 2a and the housing 2b are each integrally molded, and may be configured to have a snowman shape as shown in the drawing by being fitted to each other via the opening 200a and the opening 200b. And the collar winding part 8 as a decoration member concealed so that the part which the housing | casing 2a and the housing | casing 2b fit may not be visible from the outside may be distribute | arranged to the part corresponded to a snowman's neck. The collar winding portion 8 may play a role of hiding other structures (intake holes, exhaust holes, etc.) disposed in the casing 2a and the casing 2b so as not to be visible from the outside. It is not limited to the shape, and may be a tie shape, a clothing shape such as a jacket and a coat. Moreover, the position where the collar winding part 8 is provided is not limited to the example of illustration.

The housing 2a has a projection area 5 in which an image projected from the inside is displayed. FIG. 1 shows a state in which an image of a snowman's face is projected onto the projection area 5. Since this face is projected from the inside (back side) of the housing 2a, it is possible to easily switch to a smiling face, a crying face, an angry face, etc. by simply changing the projected image.

The outside of the projection area 5 of the housing 2a is a non-projection area that is not an area for projecting an image. That is, in the illustrated interactive robot 1, the non-projection area is an area facing the projection area 5 (an area corresponding to the back of the head of the snowman), an area on the left and right sides of the projection area 5, and an area above the projection area 5. (Corresponding area of the back of the snowman).

(Internal configuration of interactive robot 1)
Next, the internal configuration of the interactive robot 1 will be described with reference to FIG. FIG. 2 is a cross-sectional view illustrating an example of a main part configuration inside the interactive robot 1. In addition, although the example which applied the reflection member 11 (bending member) as a bending member which bends the direction of the light from the projector 10 is shown, it is not limited to this. In FIG. 2, the arrangement of the power supply unit, the fan, the operation control unit, and the like included in the interactive robot 1 is not directly related to the present invention, and thus illustration and description thereof are omitted.

The interactive robot 1 has a projector 10 (projection unit) built in a space covered by the housing 2a and the housing 2b. In the illustrated interactive robot 1, the projector 10 is disposed around the center of the snowman's chest, and the optical system support member 12 that supports the reflection member 11 is a support member (not shown) stored in the housing 2 b. Z)). Light from the projector 10 (indicated by broken arrows in the figure) is reflected (bent) on the reflecting surface of the reflecting member 11 supported by the optical system supporting member 12 and reaches the projection region 5, thereby causing an image. Is projected onto the projection area 5. The structure of the optical system support member 12 will be described later with a specific example.

Note that the entire housing 2a can be used as the projection region 5 by rotating the projector 10 and the reflecting member 11 supported by the optical system support member 12 about the vertical axis.

The optical system support member 12 and the projector 10 may be accommodated in the housing 2b so as to be detachable. When the light quantity of the lamp of the projector 10 decreases or the lamp is burned out, it is necessary to replace it. Further, it is desirable that the reflecting member 11 also wipes off dust adhering to the surface as necessary. Therefore, for example, when the housing 2a is removed from the housing 2b upward, the optical system support member 12 is exposed upward, and the optical system support member 12 and the projector 10 can be easily taken out from or attached to the interactive robot 1. You may comprise so that it can do. Thereby, the assembly work of the interactive robot 1 and the parts replacement work can be simplified.

Here, the configuration of the main part of the interactive robot 1 incorporating the projector 10 has been described as an example. However, the present invention is not limited to this, and the light emitted from the projector 10 can be projected by combining various optical systems. It is possible to lead to region 5.

(Structure of optical system support member 12)
Next, the structure of the optical system provided in the interactive robot 1 will be described with reference to FIG. FIG. 3 is a diagram for explaining the structure of the optical system support member 12 included in the interactive robot 1.

3 (a) is a perspective view of the optical system support member 12. FIG. As shown in the figure, the optical system support member 12 supports the reflection member 11, and

light shielding members

12L, 12R, 12D is provided. The

light shielding members

12L, 12R, and 12D are all made of a material that does not transmit light. The optical system support member 12 supports the reflection member 11, and

light shielding members

12L, 12R, and 12D are provided on the left side, the right side, and the lower side of the reflection member 11, respectively. The optical system support member 12 has an opening K on the front side.

3A shows an example of the optical system support member 12 in which the light shielding member 12D is provided on the lower side of the reflection member 11, the optical system support member 12 is more than the illustrated example. If it is the structure which supports the reflection member 11 long vertically, the light shielding member 12D is unnecessary.

The

light shielding members

12L and 12R (the first light shielding member and the second light shielding member) protrude from the both side ends (peripheries) of the reflecting member 11 toward the projection region 5. Accordingly, (1) light traveling from the projector 10 toward the non-projection area, (2) light bent from the reflecting member 11, light traveling from the both end portions of the reflecting member toward the non-projection area of the housing 2a, and ( 3) After reaching the projection region 5, a part of the light reflected by the projection region 5 and traveling toward the non-projection region can be shielded.

The light shielding members 12 L and 12 R may protrude in the opposite direction from the projection region 5 in addition to the projection region 5 from both end portions of the reflection member 11. The light shielding member 12L protruding toward the projection region 5 (forward) from both side ends of the reflecting member 11 and a part of the light that is not blocked by the light shielding member 12R are behind the optical system support member 12 (that is, It is possible to suppress the heading toward the non-projection region of the portion corresponding to the rear head of the housing 2a.

In addition, although the illustration shows an example in which the

light shielding members

12L, 12R, and 12D have a flat plate shape, the present invention is not limited to this. Further, the

light shielding members

12L, 12R, and 12D are provided with a black resin material having a low light transmittance on the side where the projector 10 is located (for example, inside the optical system support member 12) in order to improve the light shielding property. It may be pasted. Any material that improves the light shielding properties of the

light shielding members

12L, 12R, and 12D may be used, and the material is not limited to the black resin material.

Next, (b) of FIG. 3 shows a cross-sectional view of the optical system support member 12 cut at a position indicated by a dashed line in FIG. 3 (a) and viewed in the direction of the arrow. As illustrated, the

light shielding members

12L and 12R protrude forward from the left and right ends of the reflecting member 11. Therefore, the light that spreads from the projector 10 by the angle α, is reflected by the reflecting member 11 and travels toward the housing 2a is blocked by the

light shielding members

12L and 12R. Even if the light from the projector 10 spreads beyond the angle α and travels toward the spaces M and N, the

light shielding members

12L and 12R can also block (block) the light. As described above, in the case where the housing 2a is removed from the housing 2b upward, an internal member housed inside the housing 2a, such as the optical system support member 12, is provided with the opening 200a of the housing 2a. It will be restricted by the dimension which can pass.

In addition, (c) of FIG. 3 is a rear view when the interactive robot 1 is viewed from behind. If the light traveling from the projector 10 toward the spaces M and N cannot be sufficiently suppressed, the optical system support member 12 housed in the semi-transparent casing 2a as shown in FIG. , Red, etc.), there is a risk of seeping from the outside.

Therefore, it is desirable that the color of the internal members stored in the housing 2a, such as the optical system support member 12, be the same as or similar to the color of the housing 2a. Thereby, it is possible to prevent the color and shape of internal members such as the optical system support member 12 from being seen through from the outside of the housing 2a.

[Embodiment 2]
The following will describe another embodiment of the present invention with reference to FIG. For convenience of explanation, members having the same functions as those shown in the embodiments are denoted by the same reference numerals, and description thereof is omitted as appropriate. The

light shielding members

12L and 12R may have a structure as shown in FIG.

4A is a view showing another example of the shape of the

light shielding members

12L and 12R provided in the interactive robot 1, and is a cross-sectional view similar to FIG. 3B. A light shielding member 12 L is provided at the left end portion of the reflecting

member

11, and 12 R is provided at the right end portion of the reflecting member 11. The interval between the light shielding member 12L and the light shielding member 12L becomes wider toward the front. That is, the interval between the

light shielding members

12L and 12R is arranged to become wider than the left and right widths of the reflecting member 11 as it approaches the projection region 5.

According to this configuration, the

light shielding members

12L and 12R provided at the left and right side ends of the reflecting member 11 allow the light from the projector 10 to spread more than the angle α, and the spaces M and N (see FIG. 3B). ), And light that is reflected by the housing 2a and then travels toward the non-projection region after reaching the projection region of the housing 2a. Furthermore, compared to the

light shielding members

12L and 12R shown in FIG. 3, the left and right widths of the projection region 5 can be increased, and the lengths of the

light shielding members

12L and 12R to the front can be increased. As a result, the light traveling toward the non-projection area can be blocked more effectively.

[Embodiment 3]
The following will describe another embodiment of the present invention with reference to FIG. For convenience of explanation, members having the same functions as those shown in the embodiments are denoted by the same reference numerals, and description thereof is omitted as appropriate. The

light shielding members

12L and 12R may have a structure as shown in FIG.

(B) of FIG. 4 is a figure which shows the other example of the shape of the light shielding member with which the interactive robot 1 is provided. A light shielding member 12 L is provided at the left end portion of the reflecting

member

11, and 12 R is provided at the right end portion of the reflecting member 11. The ends of the light shielding member 12L and the light shielding member 12L on the side close to the projection area 5 of the housing 2a may be bent in directions away from each other.

Note that at least one of the light shielding member 12L and the light shielding member 12L may be bent. In other words, the

light shielding members

12L and 12R are arranged such that the cross section thereof is the letter “L” of the alphabet.

According to this configuration, the

light shielding members

12L and 12R provided at the left and right side ends of the reflecting member 11 allow the light from the projector 10 to spread more than the angle α so that the space M or N (see FIG. 3B). ), And light that is reflected by the housing 2a and then travels toward the non-projection region after reaching the projection region of the housing 2a.

[Modification]
In the above-described example, the configuration in which the light from the projector 10 is reflected by the reflecting member 11 and directed toward the projection region 5 is described, but the present invention is not limited to this. For example, the reflecting member 11 can be substituted by a prism, a lens, or a combination thereof that bends light.

Further, the arrangement and positional relationship of the projector 10 and the optical system support member 12 can be changed as appropriate. For example, the projector 10 may be stored in the

housing

2a or 2b of the interactive robot 1, or may be provided outside the

housings

2a and 2b.

[Embodiments 4 to 8]
Next, another embodiment of the present invention will be described with reference to FIGS.

First, the external appearance of the interactive robot 1 (projection apparatus) according to the present embodiment will be described with reference to FIGS. FIG. 5 is a front view of the interactive robot 1 according to the present embodiment. FIG. 6 is a rear view of the interactive robot 1.

5 and 6, the interactive robot 1 has a snowman type appearance and is divided into a head 2, a body 3 and a bottom 60. The head portion 2 and the body portion 3 are integrated, and an outer shell is formed by one case 40 (housing) whose center is constricted, and a plurality of components are incorporated in the case 40. Note that the case 40 may be divided into the head portion 2 and the body portion 3. In this case, the case 40 may be formed by combining the

housings

2a and 2b as shown in FIG. The head 2 and the body part 3 are rotationally driven with respect to the bottom part 60 by the driving force of a motor 27 (see FIG. 9) described later provided inside the body part 3.

The front of the head 2 is a face area 4, and various facial expressions are projected from a projector 15 (projection unit) (see FIG. 7) provided later. In addition, arm portions 50 are provided along the body portion 3 on both sides of the body portion 3, and a collar winding portion 8 is provided at a connection portion between the head 2 and the body portion 3. An air inlet 9 for sucking air into the interactive robot 1 is formed in front of the body part 3 so as to be hidden by the collar part 8, and air is discharged from the inside of the interactive robot 1 to the back surface of the body part 3. An exhaust port 100 is formed. Among these, the intake port 9 is provided with a filter (not shown) for removing dust from the air to be sucked.

Further, a camera 6 and a human sensor 7 are provided on the front of the body part 3 in the manner of buttons. In addition, although not shown, the interactive robot 1 is also equipped with a microphone, a speaker, and the like. When the interactive robot 1 acquires a voice, the interactive robot 1 utters according to the result of the voice recognition. It has become. Note that the voice recognition function may be installed in the interactive robot 1 or a server that can communicate with the interactive robot 1 via a network.

In addition, although the snowman type is illustrated here, the appearance of the interactive robot 1 is not limited to this, and may be any shape such as a humanoid type or a pet type. The image displayed by the projector is not limited to the face image, and may be any image.

Next, the internal structure of the interactive robot 1 will be described with reference to FIGS. FIG. 7 is a longitudinal sectional view of the front of the interactive robot 1. FIG. 8 is a longitudinal sectional view of the back surface of the interactive robot 1. FIG. 9 is a longitudinal sectional view of a side surface of the interactive robot 1. 7 to 9, the intake port 9 and the exhaust port 100 which do not appear in the longitudinal sectional view are indicated by phantom lines.

As shown in FIGS. 7 to 9, the interactive robot 1 includes a projector 15, a main board 19, a fan 23, a duct 24, a heat sink 25 (heat dissipating member), a motor 27 (drive source), etc. inside the body 3. And a reflecting mirror 18 (bending member) or the like inside the head 2. Instead of the reflecting mirror 18, a prism, a lens, or a combination thereof that bends light may be used.

The projector 15 projects a face image of the interactive robot 1 and includes a light source 16 and a projection lens 17. The light including the image emitted from the projector 15 is projected onto the back surface of the face region 4 via the reflecting mirror 18 provided on the head 2. The projector 15 is disposed near the front face of the upper portion of the body unit 3 with the projection lens 17 facing obliquely upward where the reflecting mirror 18 is located (see FIG. 9).

The fan 23 generates airflow and takes heat from the projector 15 to cool it. The fan 23 sucks air from the intake port 9 in front of the body part 3 described above. The sucked air is discharged from the exhaust port 100 on the back surface of the body part 3. That is, the fan 23 generates an airflow that is introduced from the intake port 9 and discharged from the exhaust port 100. The fan 23 is disposed almost directly below the reflecting mirror 18 in the upper part of the body part 3. Although details will be described later, the fan 23 is arranged so that the projector 15 is positioned on the rotation shaft 23a of the fan 23 (see FIG. 9).

The duct 24 guides the exhaust discharged from the fan 23 to the exhaust port 100. The duct 24 is provided so as to connect the discharge side of the fan 23 and the exhaust port 100 (see FIG. 9).

The heat sink 25 is a member that assists the heat dissipation of the projector 15, and has a plurality of fins (heat dissipating pieces) 25a provided on the base 25b. The fins 25 a are formed in a wall shape so as to extend along the direction from the projector 15 toward the fan 23. Such a heat sink 25 is attached to an extended portion of the sheet metal 30 to which the projector 15 is attached. The sheet metal 30 is made of a metal such as aluminum or iron having excellent thermal conductivity, and the heat flowing through the sheet metal 30 to the heat sink 25 is efficiently radiated from the fins 25a. The heat sink 25 is disposed between the projector 15 and the intake side of the fan 23 at the upper center of the body portion 3 (see FIG. 9).

The main board 19 is an electronic circuit board that controls the driving of the interactive robot 1, and is equipped with a CPU 20, a memory 21, and the like. The main board 19 is disposed below the projector 15 in the body 3 (see FIG. 9).

The motor 27 is a drive source that rotates the body 3 with respect to the bottom 60. The motor 27 is disposed near the back surface of the body portion 3 and is located below the duct 24 (see FIG. 9).

The projector 15, the heat sink 25, the main board 19, the fan 23, the duct 24, and the like are rotatably supported by the bottom portion 60 and assembled on the rotating plate 32 connected to the case 40.

The reflecting mirror 18 reflects the light from the projector 15 and guides it to the back surface of the face area 4. The reflecting mirror 18 is supported by a chassis 29 assembled on the rotating plate 32.

Next, a device and its advantages in the interactive robot 1 will be described with reference to FIGS. FIG. 10 is a perspective view of the interactive robot 1 with the case 40 removed as viewed from the front side. In FIG. 10, some components such as a speaker are omitted. 10 is a focus adjustment knob for adjusting the focus of the face image projected from the projector 15. FIG. 11 is a drawing in which the optical path of light emitted from the projector 15 and the air flow by the fan 23 are added to the longitudinal sectional view of the side surface of FIG. In FIG. 11, the optical path is indicated by an arrow Y1, and the air flow (airflow) is indicated by an arrow Y2.

As shown in FIG. 11, the fan 23 is arranged so that the projector 15 is positioned on the rotation shaft 23 a of the fan 23, and the airflow (arrow Y 2) by the fan 23 moves on the surface 17 a of the projection lens 17. It passes along the surface 17a (Embodiment 4).

By disposing the fan 23 in this way, not only the projector 15 is cooled by the airflow generated by the fan 23 but also adhesion of dust and the like to the projection lens 17 can be suppressed.

That is, the airflow that passes through the surface 17a of the projection lens 17 along the surface 17a blows away dust or the like that tends to adhere to the surface 17a, thereby suppressing adhesion. Even if dust or the like adheres while the interactive robot 1 is stopped (when the fan 23 is stopped), the surface 17a of the projection lens 17 can be blown off by the airflow passing along the surface 17a.

Further, as shown in FIG. 11, since the fan 23 is disposed in the vicinity of the projector 15, a vigorous air current can be applied to the projector 15. As a result, the cooling effect increases and the cooling efficiency increases. If the power to generate the airflow is the same, disposing the fan 23 at a position relatively close to the projector 15 increases the cooling effect as compared with the case where the fan 23 is disposed at a position relatively far from the projector 15. Efficiency can be increased. If the cooling effect is the same, disposing the fan 23 at a position relatively close to the projector 15 reduces the power for generating an airflow as compared with the case where the fan 23 is disposed at a position relatively far from the projector 15. Can do.

In the interactive robot 1, as shown in FIG. 11, the main substrate 19 is disposed in a space 35 in which the projector 15 is disposed and in which the airflow generated by the fan 23 passes. (Embodiment 5).

Although not as much as the projector 15, the main board 19 on which the CPU 20, the memory 21 and the like are mounted also generates heat. As described above, the main board 19 can be cooled together with the projector 15 by arranging the main board 19 in the space 35 through which the airflow generated by the fan 23 passes.

Further, as shown in FIGS. 10 and 11, the interactive robot 1 is provided with a heat sink 25 for dissipating the heat of the projector 15, and the heat sink 25 is disposed on the downstream side of the air flow in the projector 15. (Embodiment 6).

Since the heat sink 25 for dissipating the heat of the projector 15 is disposed, heat dissipation from the projector 15 is promoted, and the projector 15 can be cooled more effectively.

However, if the heat sink 25 is disposed on the upstream side of the air flow in the projector 15, that is, on the intake port 9 side, the air warmed by the heat moved from the heat sink 25 passes through the projector 15 again, and the cooling effect is obtained. descend. In the interactive robot 1, the heat sink 25 is disposed on the downstream side of the air flow in the projector 15, so that such a problem can be avoided and cooling can be performed efficiently.

In the interactive robot 1, as shown in FIGS. 10 and 11, the projector 15 is disposed on the intake side of the fan 23, and the heat sink 25 is disposed between the projector 15 and the fan 23. 25, a plurality of wall-shaped fins 25a are formed along the direction from the projector 15 toward the fan 23 (Embodiment 7).

By providing the heat sink 25 between the projector 15 and the fan 23, the air flow can be efficiently applied to the heat sink 25, and heat can be effectively removed from the heat sink 25. As a result, the cooling effect of the projector 15 is enhanced.

Moreover, since a plurality of wall-shaped fins 25a are formed in the heat sink 25 along the direction from the projector 15 to the fan 23, a part of the air in the space 35 passes between the

fins

25a and 25a. Will be sucked into the fan 23. That is, each space defined by the base 25 b and the fins 25 a in the heat sink 25 functions as a duct through which air sucked into the fan 23 passes. Since the projection lens 17 is disposed on the inlet side of these ducts formed by the heat sink 25, a vigorous airflow sucked into these inlets passes through the surface 17a of the projection lens 17. Thereby, adhesion of dust or the like to the surface 17a of the projection lens 17 can be effectively reduced as compared with a configuration in which a duct by the heat sink 25 is not provided.

Furthermore, in the interactive robot 1, as shown in FIG. 10, a duct 24 that connects the discharge side of the fan 23 and the exhaust port 100 is provided, and a motor 27 is disposed below the duct 24 (implementation). Form 8).

By providing the duct 24 that connects the discharge side of the fan 23 and the exhaust port 100, the air heated by absorbing heat from the projector 15 can be quickly transferred to the outside without spreading to the space on the discharge side of the fan 23. It can be discharged.

By arranging the motor 27, which is another heat generation source, below the duct 24, the air heated by the heat of the motor 27 can be cooled through the wall surface of the duct 24, and the projector 15 The motor 27 can also be cooled together.

[Summary]
A projection apparatus (interactive robot 1) according to aspect 1 of the present invention includes a semi-transparent casing 2a through which a part of light is transmitted from the inside to the outside, and a projection unit that projects an image from the inside to the casing. (Projector 10) and a light-shielding member that suppresses light from the projection unit from reaching a non-projection area of the casing different from the projection area 5 of the casing on which the image is projected by the projection unit. 12L and 12R.

In a projection apparatus that projects an image from the inside of a housing, a semi-transparent housing is used. When an image is projected onto the casing by the projection unit, if light from the projection unit reaches a non-projection area that is not a projection area where the image is projected, not only the projection area but also the non-projection area is inside the casing. , The viewing angle effect of the projected image may be reduced, and the visibility may be adversely affected.

According to the above configuration, the light shielding member suppresses light from the projection unit from reaching a non-projection area of the casing that is different from the projection area on which the image is projected. Thereby, the projection apparatus can reduce the light that illuminates the non-projection area of the casing, and can maintain the quality of the image projected on the projection area of the casing. Therefore, the user can visually recognize the image projected on the projection area without paying attention to the non-projection area unrelated to the projected image.

The projection device according to aspect 2 of the present invention further includes a bending member that bends light from the projection unit toward the housing in the aspect 1, and the light shielding member is the projection of the bending member. You may provide in the peripheral part of the said bending member so that the light which progresses from the area | region side to a back side may be interrupted | blocked.

In this case, since the light shielding member is supported by the bending member, a new support member for supporting the light shielding member is unnecessary.

In the projection apparatus according to aspect 3 of the present invention, in the above aspect 2, the casing may have a curved surface, and the light shielding member and the bending member may be accommodated in the casing in a detachable manner.

Since the casing has a curved surface, the projection device can be rounded and easily accessible. Further, if the bending member and the light shielding member are detachably accommodated in the housing, the assembling operation of the projection device and the replacement operation of the parts can be simplified.

Note that in the case where the housing has a curved surface, if light reaching the housing is reflected by the housing, the light may spread inside the housing. The light shielding member can reduce light reaching such a non-projection area.

In the projection device according to aspect 4 of the present invention, in the aspect 2, the bending member is a reflection member 11 that reflects the light, and the reflection member is opposite to the projection region side in the housing. The light shielding member may be provided on a side of the bending member and project toward the projection region of the housing.

By providing the light-shielding member as described above, out of the light from the projection unit toward the non-projection area, and the light from which the bending member bends the light from the projection unit, the end of the bending member extends to the non-projection area of the housing. The light that travels toward the projection area of the housing and the light that reflects off the housing and travels toward the non-projection area can be suppressed by the light shielding member. Thereby, it can suppress that the light from a projection unit arrives at a non-projection area | region.

The projection device according to aspect 5 of the present invention is the projection apparatus according to aspect 4 described above, in which the first light-shielding member provided at one end of the bending member and the second light-shielding member provided at the other end of the bending member. May become wider as it approaches the projection area of the housing.

According to the above configuration, the light shielding members are provided at both ends of the bending member, and the interval between the light shielding members becomes wider as the projection area of the casing is approached. Thereby, for example, after reaching the projection area of the housing, the light reflected and spread by the housing can be effectively blocked.

The projection device according to aspect 6 of the present invention is the projection apparatus according to aspect 4, wherein the first light shielding member provided at the end of the bending member and the second light shielding member provided at the other end of the bending member are The ends of the casing on the side close to the projection area may be bent in directions away from each other. According to said structure, there exists an effect similar to the said aspect 4. FIG.

In the projection device according to aspect 7 of the present invention, in any one of the above aspects 1 to 6, the color of the internal member stored in the inside of the casing may be the same as or similar to the color of the casing. Good.

The color of the translucent casing is often a light-colored system having a high ratio of transmitting light, such as white and milky white. If the color of the internal member stored in the casing of such a color is dark (black, blue, red, etc.), the color and shape of the internal member may be seen through from the outside of the casing. .

If the color of the internal member is the same as or similar to that of the housing as described above, it is possible to prevent the color and shape of the internal member from being seen from the outside of the housing.

The projection device according to aspect 8 of the present invention is a projection device (interactive robot 1) including a projection unit (projector 15) having a projection lens 17 inside a housing (case 40), and the housing (case) 40) Inside the projection unit (case 40), an air flow is introduced from the air inlet 9 formed in the housing (case 40) and discharged from the exhaust port 100 formed in the housing (case 40). A fan 23 for cooling the projector 15) is provided, and the fan 23 is disposed so that the projection unit (projector 15) is positioned on the rotation shaft 23a of the fan 23, and the airflow is generated by the projection lens 17. The surface 17a is passed along the surface 17a.

According to the above configuration, the fan 23 for cooling the projection unit (projector 15) is disposed so that the projection unit (projector 15) is positioned on the rotation shaft 23a of the fan 23, and the airflow is generated by the projection lens. The surface 17a of 17 is passed along the surface 17a. As a result, not only the projection unit (projector 15) is cooled, but also dust or the like that is to adhere to the surface 17a of the projection lens 17 or dust that has already adhered is blown off, so that dust or the like adheres to the projection lens 17. Suppress.

In this way, by using the essential constituent members together, it is possible to reduce the adhesion of dust and the like to the projection lens 17 without increasing the number of parts and increasing the cost, and to provide a projection device with excellent maintainability. be able to.

The projection device according to aspect 9 of the present invention is the projection device according to aspect 8 described above, wherein the main substrate 19 of the projection device is provided inside the casing (case 40), and the main substrate 19 is cooled by the airflow. In addition, it may be arranged in the space 35 through which the airflow passes.

Although not as large as the projection unit (projector 15), the main board 19 equipped with a CPU, memory, etc. also generates heat. According to the above configuration, the main board 19 is also disposed in the space 35 through which the air flow passes so that the main board 19 is cooled together with the projection unit (projector 15) so as to be cooled by the air flow by the fan 23. can do.

The projection device according to aspect 10 of the present invention includes the heat dissipation member (heat sink 25) for radiating the heat of the projection unit (projector 15) inside the housing (case 40) in the

above aspect

9 or 10. The heat dissipating member (heat sink 25) may be arranged on the downstream side of the airflow in the projection unit (projector 15).

By providing the heat radiating member (heat sink 25), heat radiation from the projection unit (projector 15) is promoted, and the projection unit (projector 15) can be cooled more effectively. However, if a heat dissipating member (heat sink 25) is disposed upstream of the air flow in the projection unit (projector 15), the air warmed by the heat moved from the heat dissipating member (heat sink 25) again becomes the projection unit (projector 15). The cooling effect is reduced. According to said structure, since the thermal radiation member (heat sink 25) is arrange | positioned in the downstream of the airflow in a projection unit (projector 15), such a malfunction can be avoided and it can cool efficiently.

The projection apparatus according to aspect 11 of the present invention is the projection apparatus according to aspect 10, wherein the projection unit (projector 15) is disposed on the intake side of the fan 23, and the heat radiating member (heat sink 25) is the projection unit (projector). 15) and the fan 23, and the heat dissipating member (heat sink 25) has a wall-like heat dissipating piece (in the direction from the projection unit (projector 15) toward the fan 23). A configuration in which a plurality of fins 25a) are formed may be employed.

By providing a heat radiating member (heat sink 25) between the projection unit (projector 15) and the fan 23, an air flow can be efficiently applied to the heat radiating member (heat sink 25), and heat is effectively applied from the heat radiating member (heat sink 25). Can be taken away. As a result, the cooling effect of the projection unit (projector 15) is enhanced.

Moreover, according to the above configuration, the heat radiating member (heat sink 25) is formed with a plurality of wall-like heat radiating pieces (fins 25a) along the direction from the projection unit (projector 15) to the fan 23. A space between the heat radiation piece (fin 25a) and the heat radiation piece (fin 25a) functions as a duct through which air sucked into the fan 23 passes. Since the projection lens 17 is disposed on the inlet side of these ducts formed by the heat radiating member (heat sink 25), a vigorous air flow sucked into these inlets passes through the surface 17a of the projection lens 17. Thereby, adhesion of dust or the like to the surface 17a of the projection lens 17 can be effectively reduced as compared with a configuration in which a duct by the heat sink 25 is not provided.

In the projection device according to aspect 12 of the present invention, in the above aspect 10, the drive source (motor 27) of the projection device, the discharge side of the fan 23, and the exhaust port 100 are provided inside the casing (case 40). A connecting duct 24, and the drive source (motor 27) is disposed below the duct 24.

According to the above configuration, the duct 24 that connects the discharge side of the fan 23 and the exhaust port 100 is provided, so that the air warmed by the heat from the projection unit (projector 15) is converted into the space on the discharge side of the fan 23. Without being spread over, the casing (case 40) can be quickly discharged to the outside.

In addition, by disposing a drive source (motor 27), which is another heat generation source, below the duct 24, the air heated by the heat of the drive source (motor 27) is raised to the wall surface of the duct 24. It can be cooled by contact. Thereby, the drive source (motor 27) can be cooled together with the projection unit (projector 15).

The present invention is not limited to the above-described embodiments, and various modifications are possible, and the present invention also relates to embodiments obtained by appropriately combining technical means disclosed in different embodiments. Is included in the technical scope. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

1 Interactive robot (projection device)
2

Head

2a, 2b Housing 3 Body 4 Face area (projection area)
5 Projection area 6 Camera 7 Human sensor 8 Collar winding part 9

Air inlet

10, 15 Projector (projection unit)
11 Reflective member (bending member)
12 Optical system support member (internal member)
12R, 12L light shielding member (first light shielding member, second light shielding member)
16 Light source 17 Projection lens 17a Surface 18 Reflective mirror (bending member)
19 Main board 20 CPU
21 Memory 22 Focus adjustment knob 23 Fan 23a Rotating shaft 24 Duct 25 Heat sink (Heat dissipation member)
25a Fin (heat dissipation piece)
27 Motor (drive source)
29 Chassis 30 Sheet metal 32 Rotating plate 35 Space 40 Case (housing)
50 Arm part 60 Bottom part 100 Exhaust port

Claims

A semi-transparent housing through which part of the light passes from the inside to the outside;
A projection unit that projects an image from the inside onto the housing;
A light shielding member that suppresses light from the projection unit from reaching a non-projection area of the casing different from a projection area of the casing on which the image is projected by the projection unit. Projection device.
A bending member that bends the light from the projection unit toward the housing;
The projection device according to claim 1, wherein the light shielding member is provided at a peripheral portion of the bending member so as to block light traveling from the projection region side to the rear side of the bending member.
The bending member is a reflecting member that reflects the light,
The reflecting member is provided on the side opposite to the projection region side in the casing,
The projection apparatus according to claim 2, wherein the light shielding member protrudes from an end portion of the bending member toward the projection region of the casing.
The distance between the first light-shielding member provided at one end of the bending member and the second light-shielding member provided at the other end of the bending member becomes wider as the projection area of the casing is approached. The projection apparatus according to claim 3.
The projection device according to any one of claims 1 to 4, wherein a color of an internal member stored inside the casing is the same as or similar to the color of the casing.
A projection device including a projection unit having a projection lens inside a housing,
A fan that cools the projection unit by generating an air flow introduced from an air inlet formed in the housing and discharged from an air outlet formed in the housing, inside the housing;
The fan is arranged such that the projection unit is positioned on a rotation axis of the fan, and the airflow passes through the surface of the projection lens along the surface.
A main board of the projection device is provided inside the housing,
The projection apparatus according to claim 6, wherein the main substrate is disposed in a space through which the airflow passes so as to be cooled by the airflow.
A heat radiating member for radiating heat of the projection unit is provided inside the housing,
The projection apparatus according to claim 6, wherein the heat radiating member is disposed on the downstream side of the air flow in the projection unit.
The projection unit is disposed on the intake side of the fan;
The heat radiating member is disposed between the projection unit and the fan, and the heat radiating member has a plurality of wall-shaped heat radiating pieces formed along a direction from the projection unit toward the fan. The projection apparatus according to claim 8, wherein:
Inside the housing, provided with a drive source of the projection device, a duct connecting the discharge side of the fan and the exhaust port,
The projection apparatus according to claim 9, wherein the drive source is disposed below the duct.