A projection device that can be adjusted in direction for attachment to a vehicle

Abstract

It is possible to adjust the projection direction, angle, and size of an image based on personal preferences, and in particular, a projection device that enables general-purpose direction adjustment for attachment to various vehicles is provided. 【Solution means】The projection device includes a bracket unit 10 and a projection lamp unit 20. The bracket unit includes a fixed bracket for fixing to the vehicle 40 and a movable bracket fixed to the fixed bracket. The projection lamp unit is rotatably connected to the cantilever 1022 of the movable bracket. The movable bracket is provided with an adjustment screw 1024, and the threaded portion of the adjustment screw is screwed into the adjustment screw hole of the housing of the projection lamp unit. By rotating the adjustment screw, the projection lamp unit can be controlled to rotate with respect to the cantilever, so that the direction and angle of projecting the image in the projection lamp unit can be adjusted.

Description

Technical Field

[0001] The present invention relates to the field of car accessories, and particularly to a projection device that can be directionally adjusted for attachment to a vehicle.

Background Art

[0002] To provide a visual atmosphere and sensory ornamentality for a vehicle and the functionality of lighting assistance for getting in and out, and at the same time enhance a sense of honor or gorgeousness, some commercially available vehicles are equipped with a projection lamp, which can project patterns, character images, etc. onto the ground or an appropriate position on the vehicle body when the projection lamp is activated. For example, the projection lamp is attached to an appropriate position of the vehicle and connected to the vehicle's power supply, and when the car door is opened, the projection lamp is automatically activated by sensing, projecting patterns and character images onto the ground, and highlighting the visual sensory effect and assisting lighting at night or in a dark environment. The patterns and characters may be automobile brand logos, trademarks or any patterns and characters.

[0003] Conventional projection lamps are developed and designed based on various types and dimensions of vehicles. That is, if a projection lamp with specific specifications is not attached to the corresponding model, the projected image cannot obtain a highly accurate focus. Also, since the dimensions, direction and angle of the projected image are fixed, they cannot be adjusted based on personal preferences.

Summary of the Invention

[0004] An object of the present invention is to provide a projection device that can adjust the direction, angle and dimensions of image projection based on personal preferences, and is particularly a general-purpose type that can be directionally adjusted for attachment to various vehicles.

[0005] The technical means of the projection device capable of direction adjustment for attachment to a vehicle provided by the present invention includes a bracket unit and a projection lamp unit. The bracket unit includes a fixed bracket for fixing to the vehicle, a pair of cantilevers formed on both opposite sides, which is fixed to the first side surface of the fixed bracket, and the pair of cantilevers extends to the second side surface of the fixed bracket through the hollow portion of the fixed bracket. An activity bracket provided with bushings at the ends of the pair of cantilevers respectively, an adjustment screw rotatably provided on the activity bracket, with a screw portion extending from the second side surface of the fixed bracket, a rubber ring fitted on the adjustment screw and located between the screw head of the adjustment screw and the activity bracket, and a screw fastener provided on the screw portion of the adjustment screw. The projection lamp unit includes a housing provided with rotating shafts rotatably fitted to the bushings on both opposite sides, and an adjustment screw hole screwed to the adjustment screw on one side, and a lens component provided inside the housing for projecting an image to the outside of the housing.

[0006] By rotating the adjustment screw, the projection lamp unit can be controlled to rotate with respect to the cantilever, so that the direction and angle of projecting the image in the projection lamp unit can be adjusted.

[0007] In one embodiment of the present invention, the activity bracket may have a plate body formed with a central hole, through holes and arc-shaped slots located on both opposite sides of the central hole. The cantilever extends from the plate body, and the fixing screw is tightened into a screw hole provided on the fixed bracket after passing through the through hole and the arc-shaped slot respectively. Thereby, after the projection lamp unit is attached to the cantilever, by rotating the activity bracket along the direction of the arc-shaped slot with the fixing screw loosened, the position of the projection lamp unit can be adjusted, and then the projection lamp unit can be fixed at the position by tightening the fixing screw.

[0008] One embodiment of the present invention may further include a cap with a straight slot formed therein; the adjustment screw is screwed into the adjustment screw hole after passing through the straight slot and the central hole. Thereby, with the adjustment screw loosened, the movable bracket can be moved along the extending direction of the straight slot to adjust the position of the projection lamp unit, and then the projection lamp unit can be fixed at the position by tightening the adjustment screw.

[0009] Preferably, a notch may be formed on the upper side of the cantilever, and the bush is provided in the notch. Thereby, it can be made easier to attach the bush to the cantilever.

[0010] In one embodiment of the present invention, the projection lamp unit is provided in the housing and includes a circuit board and a light-emitting element electrically connected to the circuit board, and light generated by the light-emitting element passes through the lens component to project an image of the pixel element outside the housing, and further includes a lamp plate component and a heat dissipation block connected to the housing for absorbing and dissipating heat generated by the lamp plate component.

[0011] Preferably, a plurality of fins are formed on the outer surface of the heat dissipation block. Thereby, heat generated by the lamp plate component can be efficiently and quickly conducted to the fins for dissipation and heat removal.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Embodiments for Carrying out the Invention

[0013] To facilitate the understanding of the present invention, the drawings and embodiments will be combined and the present invention will be described in detail below. The drawings show partial embodiments, not all embodiments of the present invention. The present invention can be realized in various different forms and is not limited to the embodiments described in the text. Conversely, the purpose of providing these embodiments is to enable a clearer and more comprehensive understanding of the content disclosed by the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without making efforts for inventiveness are within the scope protected by the present invention.

[0014] Unless otherwise defined, all technical and scientific terms used in the text have the same meaning as commonly understood by those skilled in the art. The terms used in the specification of the present invention are for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0015] As shown in FIGS. 1 and 2, the projection device with adjustable direction provided by the present invention is adapted to be attached to various suitable positions such as the bottom of the door of the vehicle 40, the rearview mirror, etc., and is electrically connected to the controller 30 by the power cable 2031. In accordance with the sensors and circuits in the controller 30, when the door is opened, the image is automatically projected onto the ground through the projection port 401 installed in the vehicle 40, and when the door is closed, the projection is interrupted.

[0016] The projection device capable of the above-mentioned direction adjustment includes a bracket unit 10 and a projection lamp unit 20. The bracket unit 10 further includes a fixed bracket 101 and a movable bracket 102. The fixed bracket 101 is an element (as shown in FIG. 3) for being fixed to the vehicle 40. A hollow portion 1011 penetrating through both opposite side surfaces (i.e., the first side surface and the second side surface) of the main body of the fixed bracket 101 is formed. Convex portions 1012 are formed on both opposite sides below the main body, and through holes 1013 are provided for each convex portion 1012. That is, the convex portions 1012 are located on both opposite sides below the second side surface of the fixed bracket 101. The through holes 1013 are for being passed through by screws (not shown) to fix the fixed bracket 101 to the vehicle 40.

[0017] That is, the vehicle 40 shown in FIGS. 1 and 2 may actually be, for example, the bottom of a door. Threaded holes are provided in the bottom of the door. After the screws pass through the through holes 1013, they are tightened into the threaded holes in the bottom of the door to fix the fixed bracket 101 to the vehicle 40. Further, screw holes 1014 and 1015 for attaching the movable bracket 102 are respectively provided on both opposite sides of the hollow portion 1011. Details will be described later.

[0018] As shown in FIGS. 1 to 3, the movable bracket 102 has a plate body 1021. A central hole 10211 penetrating through both opposite side surfaces (i.e., the first side surface and the second side surface) of the plate body 1021 is formed. Through holes 10212 and arc-shaped slots 10213 are respectively formed on both opposite sides of the central hole 10211. A pair of cantilevers 1022 (for example, fixing the pair of cantilevers 1022 to the second side surface of the plate body 1021 by welding) are provided so as to extend horizontally on both opposite sides of the second side surface of the plate body 1021. A notch 10221 (as shown in FIG. 3) is formed on the upper side near the free end of the cantilever 1022. A relatively narrow width is formed at the opening of the notch 10221, and a relatively wide width is formed extending from the opening to the back surface, which is for installing the bush 102 in the notch 10221 by fitting.

[0019] That is, the bush 102 is fitted into the notch 10221 through the opening by the pressing means. The bush 102 is used to fit with the rotating shafts 2011 provided on both opposite sides of the housing 201 of the projection lamp unit 20, and the projection lamp unit 20 can rotate about the rotating shaft 2011.

[0020] The movable bracket 102 is fixed to the first side surface of the fixed bracket 101. Specifically, the cantilever 1022 of the movable bracket 102 passes through the hollow portion 1011 of the fixed bracket 101. After the plate body 1021 is brought into contact with the first side surface of the fixed bracket 101, the fixing screw 1025 is tightened into the screw hole 1015 of the fixed bracket 101 through the spacer 10251 and the arc-shaped slot 10213 in the plate body 1021, and the fixing screw 1026 is tightened into the screw hole 1014 of the fixed bracket 101 through the hole 10212 in the plate body 1021. After the projection lamp unit 20 is attached to the cantilever 1022, the movable bracket 102 is rotated along the direction of the arc-shaped slot 10213 with the fixing screws 1025 and 1026 loosened, so as to adjust the position of the projection lamp unit 20 (for example, in a horizontal or inclined state). Then, by tightening the fixing screws 1025 and 1026 again, the projection lamp unit 20 can be fixed at the adjusted position.

[0021] The bracket unit 10 of the present invention further includes an adjustment screw 1024, a rubber ring 10241, a screw fastener 10242, and a cap 10214. As shown in FIGS. 2 and 5, the cap 10214 may be formed on a plate body having a circular shape or other shape, and a straight slot 10215 is formed thereon. After the adjustment screw 1024 passes through the rubber ring 10241, the straight slot 10215, and the central hole 10211 of the movable bracket 102, the screw fastener 10242 is adjusted to an appropriate position of the threaded portion of the adjustment screw 1024, so that the rubber ring 10241 is positioned between the screw head of the adjustment screw 1024 and the movable bracket 102 as a stopper for controlling the displacement of the adjustment screw 1024. The screw fastener 10242 has a shape similar to a spacer, and a plurality of radial grooves are formed around the hole in the center thereof, and a plurality of elastic pieces are formed and distributed annularly. Therefore, when the adjustment screw 1024 passes through the hole of the screw fastener 10242, it can pass through the elastic pieces having elasticity, and the elastic pieces can engage with any position of the threaded portion, so that the screw fastener 10242 can be used as a stopper for controlling the displacement of the adjustment screw 1024.

[0022] As shown in FIG. 2, the projection lamp unit 20 is connected to the movable bracket 102 and can adjust the direction, angle, and size of the image projected by rotating with respect to the movable bracket 102. Specifically, the projection lamp unit 20 includes a housing 201, a lens component 202, a lamp plate component 203, and a heat dissipation block 207. The housing 201 is a hollow housing, and one end thereof has a projection hole (located at the lower end of the housing 201 shown in FIG. 3, not shown). After a lens 204 and a seal ring 205 are installed in the projection hole, the hollow housing lower cover 206 is fastened to the housing 201 and fixed, so that the lens 204 and the seal ring 205 are fixed, and the seal ring 205 prevents moisture and humidity from entering the housing 201.

[0023] After the lens component 202 and the lamp board component 203 are assembled into the housing 201 from the upper end of the housing 201, the heat dissipation block 207 covers the upper end of the housing 201 and is fixed. Rotation shafts 2011 are provided on both opposite outer sides of the housing 201, and an adjustment screw hole 2012 is provided on the other outer side of the housing 201. The rotation shaft 2011 is adapted to the bush 1023 in the cantilever 1022 so that the housing 201 can rotate relative to the cantilever 1022. The adjustment screw hole 2012 and the screw part of the adjustment screw 1024 are screwed together. When the adjustment screw 1024 rotates and enters the adjustment screw hole 2012, and the screw fastener 10242 abuts against the plate body 1021, the adjustment screw 1024 can be prevented from further tightening.

[0024] The lens component 202 includes a modularized package lens and an image sensor (not shown) which is a film provided in the optical path of the lens and has patterns, characters, etc. The lamp board component 203 includes a circuit board and a light emitting element (such as an LED, not shown) electrically connected to the circuit board. The circuit board is electrically connected to the vehicle power supply by a power cable 2031 (as shown in FIG. 4). When energized, the light emitting element projects a light beam, which passes through the lens component 202 and projects an image of the image sensor to the outside of the housing 201. Since both the lens component 202 and the lamp board component 203 are well-known technologies and not the technical features claimed by the present invention, further detailed description is omitted.

[0025] The heat dissipation block 207 is formed to have a plurality of fins on its outer surface and through holes provided at four corners. After the lens component 202 and the lamp board component 203 are both installed in the housing 201 and the heat dissipation block 207 covers the housing 201, the fixing screw 208 passes through the through hole and is tightened into the screw hole of the housing 201, so that the heat dissipation block 207 and the housing 201 are fixed to each other. The heat generated when the light emitting element of the lamp board component 203 emits light is transmitted to the heat dissipation block 207, and heat can be dissipated by the plurality of fins formed thereon.

[0026] As shown in FIG. 5, after the projection device of the present invention is attached to the vehicle 40, the projection lamp unit 20 can adjust the direction, angle, and image size of the projected image by operating the adjustment screw 1024. Specifically, for example, when the adjustment screw 1024 is rotated counterclockwise, the adjustment screw 1024 pulls the projection lamp unit 20 and swings it in a direction approaching the adjustment screw 1024. Conversely, when the adjustment screw 1024 is rotated clockwise, the adjustment screw 1024 pushes the projection lamp unit 20 and swings it in a direction away from the adjustment screw 1024, thereby adjusting the direction and angle of projection of the projection lamp unit 20. In the process of rotating the adjustment screw 1024, the rubber ring 10241 with elasticity is pressed or loosened by the screw head of the adjustment screw 1024, and a minute stress action occurs due to the rebound afterwards, slightly adjusting the swing angle of the projection lamp unit 20. By adjusting the direction and angle of the projection lamp unit 20, the size of the projected image can be adjusted simultaneously.

[0027] That is, when the projected image is perpendicular to the ground, the image is the smallest, and when the angle between the emitted light of the projection lamp unit 20 and the ground becomes smaller (i.e., the angle with the vertical line becomes larger), the image projected on the ground becomes larger. Therefore, the projection device of the present invention can be appropriately attached to any model of vehicle and provides a convenient method for adjusting the direction, angle, and size of the projected image.

[0028] The above-described embodiments are merely illustrative of the preferred embodiments of the present invention. Although the description is specific and detailed, it should not be considered as a limitation of the scope of the claims of the present invention. It should be shown that, on the premise of not departing from the idea of the present invention, those skilled in the art can make some modifications and improvements, which also belong to the protection scope of the present invention.

Explanation of Reference Numerals

[0029] 10 Bracket Unit 101 Fixed Bracket 1011 Hollow Portion 1012 Convex Portion 1013 Through-hole 1014 Threaded hole 1015 Adjusting screw hole 102 Movable bracket 1021 Plate body 10211 Central hole 10212 Hole 10213 Arc-shaped slot 10214 Cap 10215 Straight slot 1022 Cantilever 10221 Notch 1023 Bush 1024 Adjusting screw 10241 Rubber ring 10242 Fastener 1025 Fixing screw 10251 Spacer 1026 Fixing screw 20 Projection lamp unit 201 Housing 2011 Rotating shaft 2012 Adjusting screw hole 202 Lens component 203 Lamp plate component 2031 Power cable 204 Lens 205 Seal ring 206 Lower cover of housing 207 Heat dissipation block 208 Fixing screw 30 Controller 40 Vehicle 401 Projection port

Claims

1. A projection device that can be adjusted in direction for attachment to a vehicle, The projection device includes a bracket unit and a projection lamp unit, The bracket unit, A fixed bracket for fixing to a vehicle, A pair of cantilevers are formed on opposite sides, fixed to the first side surface of the fixed bracket, and the pair of cantilevers extend to the second side surface of the fixed bracket through the hollow portion of the fixed bracket, and a movable bracket provided with bushings at the ends of the pair of cantilevers respectively, An adjustment screw rotatably provided on the movable bracket, with a threaded portion extending from the second side surface of the fixed bracket, A rubber ring fitted on the adjustment screw and located between the screw head of the adjustment screw and the movable bracket, And a screw fastener provided on the threaded portion of the adjustment screw, The projection lamp unit, A housing provided with rotating shafts rotatably aligned with the bushings on opposite sides, and an adjustment screw hole screwed to the adjustment screw on one side, A lens component provided inside the housing for projecting an image outside the housing, A projection device that can be adjusted in direction for attachment to a vehicle.

2. The movable bracket has a plate body formed with a central hole, and through holes and arc-shaped slots located on opposite sides of the central hole, and the cantilever extends from the plate body, A fixing screw is tightened into a screw hole provided in the fixed bracket after passing through the through hole and the arc-shaped slot respectively. A projection device that can be adjusted in direction for attachment to a vehicle according to Claim 1.

3. Further includes a cap formed with a straight slot, The adjustment screw is screwed into the adjustment screw hole after passing through the straight slot and the central hole. A projection device that can be adjusted in direction for attachment to a vehicle according to Claim 2.

4. A notch is formed on the upper side of the cantilever, and the bushing is provided in the notch. A projection device that can be adjusted in direction for attachment to a vehicle according to Claim 3.

5. The projection lamp unit, A lamp board component provided in the housing, including a circuit board and a light-emitting element electrically connected to the circuit board, and light generated by the light-emitting element passes through the lens component to project an image of the pixel element to the outside of the housing. A projection device capable of direction adjustment for attachment to a vehicle according to claim 1, further comprising a heat dissipation block connected to the housing for absorbing and dissipating heat generated by the lamp board component.

6. A projection device capable of direction adjustment for attachment to a vehicle according to claim 5, wherein a plurality of fins are formed on an outer surface of the heat dissipation block.

Images