Projection device

Abstract

To provide a projection device that can be improved in performance in transmitting a notification to an occupant.SOLUTION: A projection device 1 is roughly constituted by a projection part 11 that projects a projection image 70 corresponding to information to be notified S10 to an interior component 90 of a vehicle 9 relating to the information to be notified S10 that is notified to an occupant, and a control part 12 that controls the projection part 11 on the basis of the obtained information to be notified S10, so that the projection image 70 corresponding to the information to be notified S10 is projected on the interior component 90.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a projection apparatus. [Background technology]

[0002] As a conventional technology, a display control device is known that includes an estimation unit that estimates an obstructed area of ​​the display area of ​​a display device arranged behind a steering wheel that is obstructed by at least peripheral components of the display device, including the steering wheel, based on steering information and at least line-of-sight information, and a control unit that performs display adjustment so that display information that can be displayed on the display device is displayed in an unobstructed area of ​​the display area according to the estimated obstructed area (see, for example, Patent Document 1).

[0003] This display control device displays warning lights such as a door ajar warning light and a seat belt warning light in the display area as display information. The display control device allows the driver to view the display information even when part of the display device is blocked by the steering wheel. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2020-79879 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventional display control devices have the problem that, for example, there is little correlation between the non-obscured area and the displayed warning light, and the display position may change as the steering wheel is turned, making it difficult for occupants to recognize notifications from the displayed warning light, and the notification is not easily communicated to occupants.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a projection device that can improve the communicability of notifications to occupants. [Means for solving the problem]

[0007] One aspect of the present invention provides a projection device that includes a projection unit that projects a projection image corresponding to notification information onto an interior part of a vehicle related to the notification information to be notified to an occupant, and a control unit that controls the projection unit based on the acquired notification information and projects the projection image corresponding to the notification information onto the interior part. [Effects of the Invention]

[0008] According to the present invention, it is possible to improve the communicability of notifications to occupants. [Brief explanation of the drawings]

[0009] [Figure 1] Figure 1(a) is an example of a front view of a projection device according to the first embodiment, and Figure 1(b) is an example of a cross-sectional view of a cross section taken along line AA in Figure 1(a) as viewed from the direction of the arrow. [Figure 2] FIG. 2(a) is an example of a block diagram of a projection device according to the first embodiment, and FIG. 2(b) is a diagram for explaining an example of an interior part of a vehicle. [Figure 3] FIG. 3(a) is a cross-sectional view illustrating an example of a handle portion of the projection device according to the first embodiment, and FIG. 3(b) is a top view illustrating the example of the handle portion. [Figure 4] FIG. 4(a) is a diagram showing an example of a projection image projected onto the door trim of the driver's seat side door by the projection device of the first embodiment, and FIG. 4(b) is a diagram showing an example of a projection image projected onto the door trim of the passenger's seat side door. [Figure 5] FIG. 5(a) is a diagram showing an example of a case where a projection device according to a modified example projects a projection image onto the A-pillar on the driver's seat side, and FIG. 5(b) is a diagram showing an example of a case where a projection image is projected onto the A-pillar on the passenger's seat side. [Figure 6] FIG. 6(a) is a diagram showing an example of a notification regarding a half-open door from the projection device according to the first embodiment, and FIG. 6(b) is a diagram showing an example of a notification regarding lane departure from the projection device. [Figure 7]FIG. 7 is an example of a block diagram of a projection device according to the second embodiment. [Figure 8] FIG. 8 is a diagram showing an example of a design of the projection device according to the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] [First embodiment] (Overview of Projection Device 1) FIG. 1(a) is an example of a front view of a projection device according to a first embodiment, and FIG. 1(b) is an example of a cross-sectional view taken along line AA in FIG. 1(a) as viewed from the direction of the arrow. FIG. 2(a) is an example of a block diagram of a projection device according to the first embodiment, and FIG. 2(b) is a diagram for explaining an example of an interior part of a vehicle. Note that in each of the figures according to the embodiments described below, the ratios and shapes between figures may differ from the actual ratios and shapes. Also, in FIG. 2(a), arrows indicate the flow of main signals and information. Furthermore, in FIG. 2(a) and FIG. 7, which will be described later, arrows indicate the optical path of projection light 30a.

[0011] As shown in FIGS. 1(a) to 2(a), the projection device 1 displays notification information S 10 Notification information S for the interior parts 90 of the vehicle 9 related to 10 a projection unit 11 that projects a projection image 70 according to the acquired notification information S 10 The projection unit 11 is controlled based on the notification information S 10 and a control unit 12 that projects a projection image 70 corresponding to the projection image 70 onto an interior part 90.

[0012] 2(b), the interior parts 90 include, by way of example, a door trim 901 and a window glass 902 of a door 900 on the driver's seat 91 side, a door trim 904 and a window glass 905 of a door 903 on the passenger seat 92 side (described later), an instrument panel 906, a windshield 907, an A-pillar 908 on the driver's seat 91 side, an A-pillar 909 on the passenger seat 92 side (described later), a B-pillar 910 on the driver's seat 91 side, and a B-pillar 911 on the passenger seat 92 side (described later), but are not limited to these. Note that the projected image 70 may also be projected onto door trims 913 and window glasses 914 of left and right doors 912 on the rear seat 93 side, by way of example.

[0013] Notification information S 10 For example, the notification information S is information about a notification about an open door, a notification about an approaching object, a notification about a lane departure, a notification about a following distance, a notification about a road sign, etc. 10 As an example, the information is acquired from the vehicle control unit 95 that comprehensively controls the vehicle 9, but is not limited to this and may also be acquired from a sensor that detects the information notified by the projection device 1.

[0014] Open door notifications, approaching object notifications, and lane departure notifications are described below.

[0015] The notification regarding the distance between the vehicles is, for example, a notification indicating that the vehicle ahead is closer than a predetermined distance. 10 For example, the image 70 includes information indicating that the vehicle ahead has become closer than a predetermined distance. When the projection device 1 is configured to project the projection image 70 relating to the inter-vehicle distance, the projection device 1 projects the projection image 70 indicating the inter-vehicle distance notification onto, for example, a windshield 907 in front of the driver's seat 91, an instrument panel 906 near the boundary with the windshield 907, an A-pillar 908, or the like, as an interior component 90 relating to the notification.

[0016] The notification regarding road signs is, for example, a notification regarding signs on the road on which the vehicle is traveling. 10For example, the projection image 70 includes information about maximum speed, no crossing, no entry, stop sign, etc. When the projection device 1 is configured to project the projection image 70 related to a road sign, the projection device 1 projects the projection image 70 showing the notification related to the distance between vehicles onto, for example, a windshield 907 in front of the driver's seat 91, an instrument panel 906 near the boundary with the windshield 907, an A-pillar 908, or the like as an interior part 90 related to the notification.

[0017] When multiple pieces of information are to be notified to the occupant, the projection device 1 may be configured to switch between multiple projection images 70 as described below, or may be configured to provide multiple notifications using multiple projection devices 1. Furthermore, the projection image 70 may be projected so as to move across multiple interior components 90, rather than being projected in one location.

[0018] 1(b), the projection unit 11 has a handle 2, a condenser lens unit 4, and a projection lens unit 5. The projection unit 11 is attached to a housing 10. As an example, the projection device 1 is placed on a ceiling 94, but it may also be placed on a door or the like, and is not limited to this.

[0019] (Configuration of the housing 10) The housing 10 is made of a resin material and has a long, narrow box shape. The housing 10 has a cylindrical portion 100a on the front surface 100. The cylindrical portion 100a has a first lens opening 100b, which is an opening of the cylinder. The first projection lens 51 is exposed inside the first lens opening 100b.

[0020] 1(a), the left side surface 101 of the housing 10 has a left claw portion 101a provided on the left side surface 101 and a right claw portion 102a provided on the right side surface 102. The left claw portion 101a and the right claw portion 102a are provided so as to fit into openings provided in the attachment destination.

[0021] A connector of the vehicle 9 is attached to the connector portion 103b. The connector portion 103b exposes connector pins 141 of the substrate 14. The substrate 14 is an elongated printed wiring board.

[0022] (Configuration of handle 2) Fig. 3(a) is a cross-sectional view illustrating an example of the handle portion of the projection device according to the first embodiment, and Fig. 3(b) is a top view illustrating an example of the handle portion. In the following, as an example, a pattern formed by a transmission area 26 and a light-blocking area 27 will be described.

[0023] As shown in Fig. 3(a), the handle portion 2 has a transparent substrate 20 formed into a long, thin plate using a transparent resin material that transmits light. As shown in Fig. 3(b), the first pattern 22 is formed on the front surface 200 of this transparent substrate 20, but may also be formed on the back surface 201, or may be formed on both the front surface 200 and the back surface 201. The first pattern 22 is projected to form a projected image 70 on the projection area 7.

[0024] As an example, the first design 22 is formed by a transmissive region 26 and a light-shielding region 27. The transmissive region 26 is a region that transmits the projection light 30a output from the light source unit 3. The light-shielding region 27 is a region that does not transmit the projection light 30a or has a lower transmittance than the transmissive region 26.

[0025] As an example, the first pattern 22 is formed by two areas, a transparent area 26 and a light-shielding area 27, but this is not limited to this and the first pattern 22 may be colored, the light-shielding area 27 may have areas with multiple transmittances, or these may be combined.

[0026] As an example, the light-shielding region 27 may be formed by forming a metal film on the surface 200 of the transparent substrate 20 and etching the metal film, or by applying a light-shielding paint by printing or the like, or by applying a light-shielding paint to the surface 200 and then peeling off the paint in the area corresponding to the transparent region 26 with a laser, and is not limited to these.

[0027] (Configuration of light source unit 3) 2(a), the light source unit 3 has a light emitting element 31a as a light source. Note that the light source of the light source unit 3 may be configured with a plurality of light emitting elements instead of a single light emitting element.

[0028] 1(b), the light-emitting element 31a is disposed on the surface 140 of the substrate 14. As an example, the light-emitting element 31a is an LED (Light Emission Diode) element that outputs white projection light 30a, but is not limited to this and may be an LD (Laser Diode) element or the like.

[0029] (Configuration of condenser lens unit 4) The condenser lens unit 4 is made of a resin material. The condenser lens unit 4 has a first condenser lens 41. As an example, this first condenser lens 41 is made of a resin material and formed as a convex lens. Note that the condenser lens unit 4 may not be necessary when the light source unit 3 uses a light-emitting element 31a with high directivity or when a condenser lens is attached to the light-emitting element 31a.

[0030] As shown in FIG. 1(b), the first focusing lens 41 is configured to guide the divergent projection light 30a output from the light emitting element 31a to the first pattern 22 arranged opposite it.

[0031] 1(b), the condenser lens unit 4 has a circular hole 402. This hole 402 is used for positioning with the projection lens unit 5.

[0032] (Configuration of projection lens unit 5) The projection lens unit 5 is configured to project an enlarged projection image 70 of the first design 22 onto the projection area 7. The projection lens unit 5 is formed, for example, using a resin material. As shown in FIG. 1(b), the projection lens unit 5 has an opening 500. The handle unit 2 is attached to the opening 500.

[0033] The projection lens unit 5 has a first projection lens 51. The first projection lens 51 is configured as a biconvex lens to magnify and project the condensed projection light 30a.

[0034] The first projection lens 51 projects the projection light 30 a that has been condensed by the first condenser lens 41 and arrived via the first pattern 22 onto the projection area 7 in an enlarged form, thereby forming a projection image 70 .

[0035] The projection lens unit 5 has a cylindrical portion 502 that is inserted into the hole 402 of the condenser lens unit 4. By inserting this cylindrical portion 502 into the hole 402, the handle 2, the condenser lens unit 4, and the projection lens unit 5 are positioned and integrated together.

[0036] (Configuration of control unit 12) The control unit 12 is a microcomputer including, for example, a CPU (Central Processing Unit) that performs calculations and processing on acquired data according to stored programs, and semiconductor memories such as RAM (Random Access Memory) and ROM (Read Only Memory). For example, the ROM stores programs for operating the control unit 12. The RAM is used as a storage area for temporarily storing calculation results, for example. The control unit 12 is disposed on a substrate 14.

[0037] As shown in Fig. 2(a), the control unit 12 is electrically connected to the light-emitting element 31a. The control unit 12 is configured to control the turning on and off of the light-emitting element 31a by outputting a control signal S1. The light-emitting element 31a turns on when the control signal S1 is input, and turns off when no control signal S1 is input. The control signal S1 is, for example, a PWM (Pulse Width Modulation) signal, but is not limited to this.

[0038] Below, an example of a notification regarding an approaching object and a notification regarding an open door will be described.

[0039] Notifications about approaching objects FIG. 4(a) is a diagram showing an example of a projection image projected onto the door trim of the driver's seat side door by the projection device of the first embodiment, and FIG. 4(b) is a diagram showing an example of a projection image projected onto the door trim of the passenger's seat side door.

[0040] The control unit 12 receives notification information S indicating the approach of an object to the vehicle 9. 10 When the notification information S is acquired, 10 The projection unit 11 is controlled so as to project the projection image 70 onto the door trim of the door on the side where the object approaches, which is an interior part 90 of the vehicle 9 related to the object.

[0041] The notification regarding the approach of an object is, for example, a notification that notifies the user of the approach of an object such as a living thing such as a person or an animal, another vehicle, or an installed object. 10 For example, the projection image 70 includes information on the direction in which the vehicle 9 and the object are approaching. When the projection device 1 is configured to project a projection image 70 related to the approach of an object, the control unit 12 projects the projection image 70 indicating the notification related to the approach of an object onto, for example, the door trim, window glass, or A-pillar of the door on the side where the approach of the object is detected, as an interior part 90 related to the notification.

[0042] 4(a) and 4(b) show, as an example, notification information S regarding notifications to assist in collision avoidance, etc., when a bicycle or vehicle (two-wheeled or four-wheeled) approaching from behind is detected while the vehicle is stopped and there is a possibility of a collision with the door when the door is opened. 10 10 shows a projected image 70 that is projected when

[0043] As an example, the control unit 12 may receive the acquired notification information S as shown in FIG. 10 indicates that a bicycle is approaching the door 900 on the driver's seat 91 side, the projection unit 11 is controlled to project the projection image 70 onto the door trim 901 of the door 900.

[0044] Further, as an example, as shown in FIG. 4(b), the control unit 1210 indicates that a bicycle is approaching the door 903 on the passenger seat 92 side, the projection unit 11 is controlled to project the projection image 70 onto the door trim 904 of the door 903.

[0045] The control unit 12 may control the light source unit 3 to make the light emitting element 31a flash, thereby projecting a flashing projection image 70.

[0046] Furthermore, the projection device 1 may be configured to switch between multiple patterns in order to project the projection image 70 onto the door trim 901 on the driver's seat 91 side and the door trim 904 on the passenger seat 92 side, and may be configured to change the angle of the projection unit 11 using an actuator.

[0047] FIG. 5(a) is a diagram showing an example of a case where a projection device according to a modified example projects a projection image onto the A-pillar on the driver's seat side, and FIG. 5(b) is a diagram showing an example of a case where a projection image is projected onto the A-pillar on the passenger's seat side.

[0048] As a modified example, as shown in Fig. 5(a), when an object is approaching the driver's seat 91 side, the projection device 1 may be configured to project the projection image 70 onto the A-pillar 908 on the driver's seat 91 side. As shown in Fig. 5(b), when an object is approaching the passenger seat 92 side, the projection device 1 may be configured to project the projection image 70 onto the A-pillar 909 on the passenger seat 92 side. Figs. 5(a) and 5(b) show, as an example, the projection image 70 when a person is approaching.

[0049] Notifications about open doors FIG. 6(a) is a diagram showing an example of a notification regarding an ajar door of the projection device according to the first embodiment.

[0050] The control unit 12 receives notification information S regarding the open door. 10 When the notification information S is acquired, 10 The projection unit 11 is controlled so as to project the projection image 70 onto the door trim of an open door as an interior part 90 of the vehicle 9 related to the vehicle.

[0051] The notification regarding the door not being closed is, for example, a notification indicating that the door of the vehicle 9 is not completely closed, that is, the door is ajar. 10 For example, the information includes information as to whether the door that is ajar is the door 900 on the driver's seat 91 side or the door 903 on the passenger seat 92 side. When the projection device 1 is configured to project a projection image 70 relating to a door that is ajar, the control unit 12 projects the projection image 70 indicating a notification relating to the ajar door onto the door trim of the door where the ajar door has been detected, for example.

[0052] As an example, the control unit 12 may use the acquired notification information S 10 indicates that the passenger seat door 903 is ajar, the control unit 12 controls the projection unit 11 to project the projection image 70 onto the door trim 904 of the door 903. 10 indicates that the door 903 on the passenger seat 92 side is open, a projection image 70 is projected onto the door trim 901 of the door 900. In the projection image 70 shown in FIG. 6(a), a mark indicating that the door 903 on the passenger seat 92 side is open is projected together with text onto the door trim 904 of the door 903 on the passenger seat 92 side, making it easier for the occupant to recognize the notification.

[0053] Lane Departure Notification FIG. 6(b) is a diagram showing an example of a notification regarding lane departure from the projection device according to the first embodiment.

[0054] The notification regarding lane departure is, for example, a notification that the vehicle 9 is about to deviate from the lane or has deviated from the lane. 10 For example, the signal includes information about the direction in which the vehicle 9 is about to deviate or has deviated. When the projection device 1 is configured to project a projection image 70 related to lane departure, the control unit 12 projects the projection image 70 indicating the notification related to lane departure onto the door trim of the door on the side where the departure is detected.

[0055] For example, as shown in FIG. 6(b), the control unit 1210 indicates that the vehicle is about to depart from the left lane or has departed from the left lane, a projection image 70 notifying the driver of the departure from the lane is projected onto the door trim 904 of the door 903 on the passenger seat 92 side. 10 indicates that the vehicle is about to depart from the lane on the right or has departed from the lane on the left, a projection image 70 notifying the driver of the lane departure is projected onto the door trim 901 of the door 900 on the driver's seat 91 side. In the projection image 70 shown in FIG. 6(b), a mark indicating a lane departure on the left side is projected together with text onto the door trim 904 of the door 903 on the side of the departure, making it easier for the occupants to recognize the notification.

[0056] (Effects of the first embodiment) The projection device 1 according to the present embodiment can improve the communicability of notifications to occupants. Specifically, the projection device 1 projects the projection image 70 onto the interior component 90 related to the notification to the occupant, which makes it easier for the occupant to recognize the notification and improves the communicability of the notification compared to when the notification is sent to a location less related to the notification.

[0057] The projection device 1 projects a projection image 70 including marks and characters indicating the content of the notification onto an interior component 90 related to the notification, making it easier for occupants to intuitively recognize the notification compared to when this configuration is not adopted.

[0058] When the notification is a warning about an approaching vehicle or a door being ajar, the projection device 1 projects a projection image 70 onto the door trim related to the notification, so that the area is larger and easier for the occupants to recognize than when it is displayed inside the meter panel where the speedometer etc. are arranged.

[0059] The projection device 1 allows the occupant to easily recognize the notification, so that the occupant can take evasive action before the automatic brake function or the like is activated or a warning sound is emitted, compared to when the notification is difficult to recognize, thereby reducing the annoyance caused by the activation of the function.

[0060] [Second embodiment] The second embodiment differs from the first embodiment in that the projection unit is configured to be able to project a plurality of projection images.

[0061] Fig. 7 is an example of a block diagram of a projection device according to the second embodiment. Fig. 8 is a diagram showing an example of a design of a projection device according to the second embodiment. In the embodiments described below, parts having the same functions and configurations as those in the first embodiment are given the same reference numerals as those in the first embodiment, and their description will be omitted.

[0062] The projection unit 11 projects the notification information S 10 The control unit 12 has a plurality of patterns corresponding to the acquired notification information S 10 A pattern to be projected from the plurality of patterns and a light source corresponding to the pattern to be projected from the plurality of light sources are selected based on the above, and a projection image 70 of the pattern to be projected is output as notification information S 10 The projection unit 11 is configured to control the projection unit 11 so as to project the image onto an interior part 90 of the vehicle 9 related to the image.

[0063] 7 and 8, the projection device 1 of the present embodiment is configured to switch between projection images 70 based on four designs. For example, the projection unit 11 projects the projection image 70 toward the door trim 901 on the driver's seat 91 side using the light-emitting element 31a, the first condensing lens 41, the first design 22, and the first projection lens 51, and the light-emitting element 31b, the second condensing lens 42, the second design 23, and the second projection lens 52. The projection unit 11 also projects the projection image 70 toward the door trim 904 on the passenger seat 92 side using the light-emitting element 31c, the third condensing lens 43, the third design 24, and the third projection lens 53, and the light-emitting element 31d, the fourth condensing lens 44, the fourth design 25, and the fourth projection lens 54.

[0064] (Configuration of handle 2) As shown in Fig. 8, the handle portion 2 has a first design 22 to a fourth design 25. The first design 22 and the second design 23 are projected onto the door trim 901 on the driver's seat 91 side. The first design 22 is projected, for example, as a projected image 70 shown in Fig. 4(a). The second design 23 is projected, for example, as a projected image 70 shown in Fig. 5(a) onto the door trim 901.

[0065] The third design 24 and the fourth design 25 are projected onto the door trim 904 on the passenger seat 92 side. The third design 24 is projected, for example, as the projection image 70 shown in Fig. 4(b). The fourth design 25 is projected, for example, as the projection image 70 shown in Fig. 5(b) onto the door trim 904.

[0066] (Configuration of light source unit 3) The light source unit 3 has light emitting elements 31a to 31d as light sources corresponding to the first to fourth designs 22 to 25. The light emitting elements 31a to 31d are, by way of example, LED elements that output white projection light 30a to 30d, but are not limited to this.

[0067] The light emitting elements 31a to 31d are turned on and off based on control signals S1 to S4 output from the control unit 12. Note that the light source unit 3 may have one light source configured from a plurality of light emitting elements.

[0068] (Configuration of condenser lens unit 4) The condenser lens unit 4 has a first condenser lens 41 to a fourth condenser lens 44 corresponding to the light emitting elements 31a to 31d. The first condenser lens 41 to the fourth condenser lens 44 are configured to condense the projected light 30a to 30d and guide it to the corresponding first design 22 to fourth design 25. The first condenser lens 41 to the fourth condenser lens 44 may be formed integrally, or may be formed separately and attached to the housing 10.

[0069] (Configuration of projection lens unit 5) The projection lens unit 5 has a first projection lens 51 to a fourth projection lens 54 corresponding to the first design 22 to the fourth design 25. The first projection lens 51 and the second projection lens 52 project the projection image 70 onto the same projection area 7 of the door trim 901 on the driver's seat 91 side. The third projection lens 53 and the fourth projection lens 54 project the projection image 70 onto the same projection area 7 of the door trim 904 on the passenger seat 92 side. The first projection lens 51 to the fourth projection lens 54 may be formed integrally, or may be formed separately and attached to the housing 10.

[0070] (Configuration of control unit 12) The control unit 12 is electrically connected to the light emitting elements 31a to 31d. 10 Based on this, the light emitting elements 31a to 31d that are to be turned on are determined.

[0071] (Effects of the second embodiment) The projection device 1 of this embodiment can switch between a plurality of projection images 70, and therefore can improve the transmission of a plurality of notifications to the occupants compared to a case where this configuration is not adopted.

[0072] As a modified example, the projection device 1 may be configured to project a dynamic projection image 70 by successively switching between a plurality of projection images 70.

[0073] According to the projection device 1 of at least one of the embodiments described above, it is possible to improve the efficiency of communicating notifications to the occupants.

[0074] Although several embodiments and modifications of the present invention have been described above, these embodiments and modifications are merely examples and do not limit the scope of the invention as claimed. These novel embodiments and modifications may be embodied in various other forms, and various omissions, substitutions, modifications, etc. may be made without departing from the spirit of the present invention. Furthermore, not all combinations of features described in these embodiments and modifications are necessarily essential to solving the problems of the invention. Furthermore, these embodiments and modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0075] 1...projection device, 2...handle portion, 3...light source portion, 4...condensing lens portion, 5...projection lens portion, 7...projection area, 9...vehicle, 10...casing, 11...projection portion, 12...control portion, 14...substrate, 20...transparent substrate, 22-25...first to fourth patterns, 26...transmission area, 27...light-shielding area, 30a-30d...projected light, 31a-31d...light-emitting element, 41-44...first to fourth condensing lenses, 51-54...first to fourth projection lenses, 70...projected image, 90...interior part, 91...driver's seat, 92...passenger seat, 93...rear seat, 94...ceiling, 95...vehicle control portion, 100...front surface, 100a...cylindrical portion , 100b...first lens opening, 101...left side surface, 101a...left claw portion, 102...right side surface, 102a...right claw portion, 103b...connector portion, 140...surface, 141...connector pin, 200...surface, 201...rear surface, 402...hole portion, 500...opening, 502...cylindrical portion, 900...door, 901...door trim, 902...window glass, 903...door, 904...door trim, 905...window glass, 906...instrument panel, 907...windshield, 908...A pillar, 909...A pillar, 910...B pillar, 911...B pillar, 912...door, 913...door trim, 914...window glass

Claims

1. a projection unit that projects a projection image corresponding to the notification information onto an interior part of the vehicle that is related to the notification information to be notified to an occupant; a sensor that acquires the notification information; a control unit that determines an interior part as a projection destination and a projection image to be projected onto the interior part based on the notification information acquired by the sensor, and controls the projection unit to project the projection image onto the interior part as a projection destination; A projection device comprising:

2. When the control unit acquires the notification information indicating an object approaching the vehicle, the control unit controls the projection unit to project the projection image onto a door trim of a door on a side where the object is approaching as the interior part to be projected. The projection device according to claim 1 .

3. When the control unit acquires the notification information related to an open door, the control unit controls the projection unit to project the projection image onto a door trim of the open door as the interior part to be projected. The projection device according to claim 1 .

4. The projection unit has a plurality of patterns for projecting a projection image according to the notification information, The control unit controls the projection unit to switch between the plurality of designs.

4. The projection device according to claim 1.

5. An actuator for changing the angle of the projection unit is provided, the control unit changes the angle of the projection unit by the actuator to project the projection image onto the interior part as a projection destination.

4. The projection device according to claim 1.

6. the projection unit includes a plurality of patterns corresponding to the notification information for each of the interior parts as a projection destination, and a plurality of light sources that output projection light for each of the plurality of patterns; The control unit selects a design to be projected from the plurality of designs and a light source corresponding to the design to be projected from the plurality of light sources based on the notification information acquired from the sensor, and controls the projection unit to project the projected image of the design to be projected onto the interior part of the vehicle related to the notification information.

4. The projection device according to claim 1.

Images