JP3219639U - Embedded head-up display device - Google Patents

Abstract

Disclosed is an embedded head-up display device that can obtain a distant virtual image distance without increasing the volume of a main body, improves visual effects, and improves driving safety.
An embedded head-up display device includes a main body, an image projection module disposed in the main body, a convex mirror, a plane mirror, and a concave mirror. The main body includes an accommodation space and an opening. 13 and the circuit board 12, and the image projection module is electrically connected to the circuit board, receives and projects the output display image, the convex mirror reflects the display image, and the plane mirror reflects the convex mirror. The image is reflected, and the concave mirror reflects the display image reflected by the plane mirror. The convex mirror first reduces the display screen without wasting space, the plane mirror increases the optical path distance, and the concave mirror enlarges the display screen. By extending the optical path, it is possible to drive the farthest virtual image distance visually most easily and improve driving safety.
[Selection] Figure 3

Description

  The present invention relates to an embedded head-up display device, and more particularly to an embedded head-up display device that can increase the optical path to obtain a virtual image distance. It is possible to obtain a far virtual image distance without increasing the volume of the main body of the head-up display device embedded in the instrument panel of the vehicle using the limited space of the vehicle, the visual effect is the best, and driving safety Property can be improved.

  Currently, the head-up display technology used in automobiles is less complicated than the head-up display on an aircraft and is generally an optical system consisting of two main devices: a projector and a stack mirror. . The projector is composed of a signal light source, a projection mirror, and other optical components, and the signal light source of the projector is composed of an LCD liquid crystal display or a cathode ray tube of a CRT. Light is emitted from the signal light source and projected through a projector onto a stack mirror (or special transparent screen) on the glass, which displays text or images that overlap the real scene in front of you. The related art includes US Pat. No. 7,936,518, TW M491842, TW M541404, TW M543368, TW I494603, TW I444657, TW I608249, TW Publication No. 436662, TW Publication No. 200722788, TW Publication No. 201514664, etc. You can refer to it.

  As shown in FIG. 1, it is a schematic diagram of the structure and optical path of a typical conventional head-up display device A. The head-up display device A includes a main body A0, and an image projection device 1A, a convex mirror 2A, and a concave mirror 3A are arranged inside the main body A0. The display image of the image projection device 1A is first projected onto the first optical path MA1 between the image projection device 1A and the convex mirror 2A, thereby forming a first virtual image EA1. After the first virtual image EA1 is reduced at the same rate as the first imaging distance PA1, the first virtual image EA1 is projected via the second optical path MA2 between the convex mirror 2A and the concave mirror 3A, and the second virtual image EA2 is projected. Form. The size of the second virtual image EA2 is amplified at the same rate as the second imaging distance PA2, and finally the display image is projected onto the windshield WA by the concave mirror 3A, and further a virtual image is formed and reflected on the user's eyes. .

  Multiplying the magnification path of the concave mirror to the optical path of the object distance in front of the concave mirror is based on the distance at which the virtual image is formed. (1) Although the magnification of the concave mirror is improved, it is ideal due to the processing limit of the concave mirror. The virtual image received by both eyes is exactly the same, the higher the magnification, the larger the imaging error, the error due to the image appears in the two eyes, and the viewer feels dizzy . The magnification is usually controlled within 7x for viewing comfort. (2) Increasing the subject distance optical path, but since the conventional head-up display device is usually installed on the front surface of the instrument panel, the space is limited. The virtual image distance is only 2.5 meters away from the driver's eyes. In order to obtain a better virtual image distance (approximately 5 times the virtual image distance), the usual approach is to increase the volume of the head-up display device. However, since the space in the vehicle is limited, there are too many devices to be installed, and increasing the volume of the head-up display device cannot be easily overcome.

US Pat. No. 7,936,518 Taiwan Patent No. M491842 Specification Taiwan Patent No. M541404 specification Taiwan Patent No. M543368 Specification Taiwan Patent No. I494603 Specification Taiwan Patent No. I444657 Specification Taiwan Patent No. I608249 Specification Taiwan Patent No. 436662 Taiwan Patent No. 201516475 published Taiwan Patent No. 200722788 published Taiwan Patent No. 201224564 published

  Therefore, after repeated research and improvement, the present inventor completed an embedded head-up display device. That is, an object of the present invention is to provide an embedded head-up display device that can increase the optical path in order to obtain a far virtual image distance. Using the limited space of the car, the main body of the present invention can be embedded in the instrument panel of the car. The concave mirror, convex mirror, and plane mirror prevent the display image from being bent and deformed, so the virtual image distance can be obtained without increasing the volume of the main body of the head-up display device, the visual effect is the best, and safe driving Will improve.

In order to achieve the above object, an embedded head-up display device of the present invention includes:
A main body, an image projection module, a convex mirror, a plane mirror, and a concave mirror are included.

  The main body includes an accommodation space, an opening, and a circuit board.

  The image projection module is disposed in the main body, is electrically connected to the circuit board, receives a display image output by the circuit board, and projects the display image.

  The convex mirror is disposed on the main body and reflects the display image.

  The plane mirror is provided in the main body and reflects the display image reflected by the convex mirror.

  The concave mirror is provided in the main body, and reflects the display image reflected by the plane mirror.

According to the above configuration, the convex mirror is such that the distance between the plane mirror and the concave mirror reduces the display screen first without wasting space, and the optical path distance is increased by the plane mirror.
The concave mirror enlarges the display screen, and the display screen can maintain the same magnification, so a longer optical path distance can be obtained without increasing the body volume of the head-up display device, and a far virtual image distance is obtained To achieve that.

  Furthermore, the main body includes a light shielding cover, and the light shielding cover includes a convex mirror and a plane mirror, and the convex mirror is used to eliminate stray light due to the mutual reflection action of the plane mirror and the concave mirror.

  The said main body is embed | buried under the instrument panel of a vehicle, and the opening part is covered with the transparent dust cover.

  The embedded head-up display device of the present invention further includes a reflective film attached to the windshield.

  A motor gear set is provided on the bottom surface of the concave mirror, and the reflection angle of the concave mirror can be adjusted by rotating the motor gear set.

  The embedded head-up display device of the present invention further includes a button set that is electrically connected to the circuit board and operates as a function of the embedded head-up display device.

  The embedded head-up display device of the present invention further includes a light sensing module electrically connected to the circuit board to adjust the brightness of the image projection module.

  The embedded head-up display device of the present invention further includes a speaker module, the speaker module is electrically connected to the circuit board, and the voice message is transmitted to the driver through the speaker module.

  The embedded head-up display device of the present invention further includes a wireless module electrically connected to the circuit board for receiving signal data wirelessly transmitted by the electronic device.

  The embedded head-up display device of the present invention further includes a connection module that is electrically connected to the circuit board and receives signal data transmitted by the electronic device.

  According to the above configuration of the present invention, it is possible to provide an embedded head-up display device that can increase the optical path in order to obtain a far virtual image distance. Using the limited space of the vehicle through the concave mirror, convex mirror and plane mirror, the display screen will not be bent or deformed, therefore, without increasing the volume of the head-up display device body, Since the virtual image distance can be obtained, the visual effect is the best and the driving safety is improved.

It is a schematic diagram of the structure and optical path of a conventional head-up display device of the present invention. It is a schematic diagram of the combined structure of the present invention. It is a schematic diagram of the decomposition | disassembly structure of this invention. It is a block diagram of the circuit of this invention. It is the schematic of embodiment of this invention. The schematic diagram of the optical path decomposition | disassembly of this invention.

  As shown in FIGS. 2 to 6, the embedded head-up display device of the present invention includes a main body, an image projection module, a convex mirror, a plane mirror, and a concave mirror.

  A housing space 11 and an opening 13 are provided inside the main body 1. The main body 1 is provided with a circuit board 12, and the circuit board 12 is provided with a processor 120. The processor 120 is message processing and output screen information for controlling data processing and its operation. The main body 1 is embedded in the instrument panel C 1 of the vehicle C, and the opening 13 is covered with a transparent dust cover 14.

  The image projection module 2 is electrically connected to the circuit board 12. The image projection module 2 is arranged on the main body 1 in order to receive a display image output by the circuit board 12 and project the display image. As the first actual optical path M1 (as shown in FIG. 6), the position of the image projection module 2 is at a position where the instrument panel C1 is close to the handle D or near the front of the instrument panel C1 (see FIG. 5). As shown).

  A convex mirror 3 is disposed in the main body 1, and the convex mirror 3 is disposed at a relative position projected by the image projection module 2, and reflects the display image as a second actual image light path M2.

  A plane mirror 4 is disposed on the main body 1. The plane mirror 4 reflects the display image reflected by the convex mirror 3 as a third actual image light path M3.

  The concave mirror 5 is disposed on the main body 1. The concave mirror 5 reflects the display screen reflected by the plane mirror 4 as a fourth actual image light path M4. By complementing the convex mirror 3 and the concave mirror 5, the magnification of the field of view and the end of the field of view of the virtual image surface are maintained, and a corrected virtual image surface distortion effect is obtained. The absolute distortion equation is defined as δu = U′−u ′, where U ′ is the principal ray image height at any point of the planar object, and is an ideal pixel at any off-axis point of the planar object. It is height. This technical means is well known to those skilled in the art and will not be described again.

  The technical feature of the present invention is that the display screen is not bent and deformed through the concave mirror, the convex mirror, and the plane mirror in order to obtain a far optical path without increasing the main body volume of the embedded head-up display device. As shown in FIG. 6, the imaging formula of the convex mirror 4 is 1 / p1 = 1 / q1 + 1 / f1 = 1 / m1 + 1 / f1, where f1 is the focal length of the convex mirror 3 and m1 is the object distance. (Hereinafter referred to as the first actual imaging optical path M1), p1 is the image distance (hereinafter referred to as the first imaging distance P1), and the display image of the image projection module 2 is first the first between the image projection module 2 and the convex mirror 3. A first virtual image E1 is formed by projecting through one real image path M1. The size of the first virtual image E1 is reduced at the same magnification as the first imaging distance P1. The imaging formula of the plane mirror 4 after projecting the first virtual image E1 on the second real imaging light path M2 between the convex mirror 3 and the plane mirror 4 is 1 / p2 = 1 / q2 = 1 / m2, m2 is the object distance, P2 is an image distance (hereinafter referred to as a second imaging distance P2) and forms a second virtual image E2. After the projection of the plane mirror 4, the virtual image optical path is much longer than the real image path. This is the method used by the present invention to extend the projection distance. Finally, after projecting the second virtual image E2 through the third real imaging optical path M3 between the plane mirror 4 and the concave mirror 5, the imaging formula of the concave mirror 5 is 1 / p3 = 1 / q3-1 / f3 = 1 /. (P2 + m3) −1 / f3, f3 is the focal length of the concave mirror, m3 is the object distance (hereinafter referred to as the third actual optical path M3), P3 is the image distance (hereinafter referred to as the third imaging distance P3), Three virtual images E3 are formed. The size of the third virtual image E3 is the same as the magnification of the third imaging distance P3. After projecting the concave mirror 5, the concave mirror 5 has a large magnification at the same total magnification in order to increase the virtual image distance, but can obtain a longer optical path distance. In contrast, conventional head-up display devices only increase the volume of the body to maintain the same optical path distance. This point is that the head-up display device of the present invention has an inventive step capable of obtaining a distant virtual image distance without increasing the main body volume.

  As shown in FIG. 3, the main body 1 further includes a light shielding cover 15. The convex mirror 3 and the plane mirror 4 are disposed on the light shielding cover 15. Solved by.

  As shown in FIG. 5, the embedded head-up display device of the present invention includes a reflective film 6 attached to the windshield W, and the concave mirror 5 reflects the fourth actual image light path M4 reflected by the plane mirror 4. The display image is enlarged and projected on the reflective film 6, and reaches the driver's eyes E due to the reflection of the reflective film 6.

  A motor gear set 7 is provided on the bottom surface of the concave mirror 5, the motor gear set 7 and the circuit board 12 are electrically connected, and the reflection angle of the concave mirror 5 is adjusted by the rotation of the motor gear set 7.

The embedded head-up display device of the present invention further includes a wireless module 81, and the wireless module 81 receives signal data wirelessly transmitted by the electronic device 9. The wireless module 81 is Bluetooth (registered trademark) or WiFi. The electronic device 9 is a vehicle device, a vehicle host, a car audio, a ceiling-type multimedia player, a head-mounted multimedia player, a hands-free portable device, a navigation device, a tire pressure detection device, a smartphone, a tablet, or the like. The wireless module 81 provides various information such as battery power of the vehicle, whether the door is closed, whether the rear cover is closed, travel speed, road surface speed limit, navigation direction display, etc. to the electronic device 9 of the vehicle. Can be displayed when connected wirelessly. When the electronic device 9 is a tire pressure detecting device, the screen information displays the tire pressure state of the vehicle. When the electronic device 9 is connected to the mobile phone, the electronic device 9 can display not only the speed of the mobile phone but also wireless transmission of various information transmitted by the mobile phone APP to the wireless module 81. For example,
This is music playback wirelessly transmitted to the wireless module 81.

  The embedded head-up display device of the present invention further includes a light sensing module 82, which is electrically connected to the circuit board 12 to adjust the brightness of the display projected by the image projection module 2. The The brightness of the display screen can be adjusted according to the measured sunlight intensity, and the driver can clearly see the message on the display screen.

  The embedded head-up display device of the present invention further includes a button set 83. The button set 83 is provided on the instrument panel C1 or the center console of the handle D or the vehicle C, is electrically connected to the circuit board 12, and operates the functions of the embedded head-up display device. The button set 83 includes a power button 831, a start button 832, an operation switch button 833, a stop button 834, and a knob 835. The power button 831 can activate or deactivate the embedded head-up display device, the start button 832 can activate the motor gear set 7, and the operation switch button 833 can change the rotation direction of the motor gear set 7. The switch can be switched and the stop button 834 can stop the operation of the motor gear set 7. The knob 835 can manually adjust the brightness of the display screen. When the knob 835 is rotated to the right, the brightness is increased to brighten the display screen, and the knob 835 is rotated to the left to be brighter. The screen goes dark and the driver can clearly see the message on the display screen.

  The embedded head-up display device of the present invention further includes a connection module 84. The connection module 84 is electrically connected to the circuit board 12 and receives the signal data transmitted by the electronic device 9 with a wire. The electronic device 9 is a vehicle device, a vehicle host, a car audio, a ceiling-type multimedia player, a head-mounted multimedia player, a hands-free device, a navigation device, a smartphone, a tablet, or the like.

  The embedded head-up display device includes a speaker module 85, and the speaker module 85 is electrically connected to the circuit board 12, and a voice message is sent to the driver via the speaker module 85 and transmitted from the electronic device 9. The recorded audio file can be reproduced as a warning sound.

  The embedded head-up display device of the present invention can provide an optical path to a convex mirror, a concave mirror, and a plane mirror without wasting space, and can obtain a far optical path distance. Projection distance can be obtained.

  The embedded head-up display device of the present invention provides an extended optical path for obtaining a far-distance virtual image distance that effectively uses a limited space of the vehicle, and the display image is bent by mutual correction using a concave mirror and a convex mirror. Therefore, a far virtual image distance can be obtained without increasing the volume of the main body of the head-up display device. Driving has the best visual effects, improves driving safety, and effectively solves the deficiencies of the prior art. Furthermore, since the technical means used in the present invention is not prior art, the present invention has requirements for novelty and inventive step.

  The specific embodiments described in the present invention are for convenience to explain the technical contents of the present invention, and are not limited to the above embodiments. Implementation of various modifications made without departing from the spirit of the present invention and the scope of the following utility model application is within the scope of the present invention.

[Prior art]
A Head-up display device A0 Main body 1A Image projection device 2A Convex mirror 3A Concave mirror MA1 First optical path MA2 Second optical path EA1 First virtual image EA2 Second virtual image PA1 First imaging distance PA2 Second imaging distance WA Windshield [present invention]
DESCRIPTION OF SYMBOLS 1 Main body 11 Accommodating space 12 Circuit board 120 Processor 13 Opening part 14 Transparent dust cover 15 Light shielding cover 2 Image projection module 3 Convex mirror 4 Plane mirror 5 Concave mirror 6 Reflective film 7 Motor gear set 81 Wireless module 82 Photosensitive module 83 Button set 831 Power button 832 Start button 833 Operation switch button 834 Stop button 835 Knob 84 Connection module 85 Speaker module 9 Electronic device C Vehicle C1 Instrument panel D Handle E Eye E1 First virtual image E2 Second virtual image E3 Third virtual image M1 First real light path M2 Second Actual shooting light path M3 Third actual shooting light path M4 Fourth actual shooting light path P1 First imaging distance P2 Second imaging distance P3 Third imaging distance W Windshield

A housing space 11 and an opening 13 are provided inside the main body 1. The main body 1 is provided with a circuit board 12, and the circuit board 12 is provided with a processor 120. The processor 120 serves to control data processing and related information processing and to output screen information. The main body 1 is embedded in the instrument panel C 1 of the vehicle C, and the opening 13 is covered with a transparent dust cover 14.

Claims (10)

A type of embedded head-up display device, including a main body, an image projection module, a convex mirror, a plane mirror, and a concave mirror,
The main body includes a housing space, an opening, and a circuit board,
The image projection module is disposed on the main body, electrically connected to the circuit board, receives a display image output by the circuit board, and projects the display image;
The convex mirror is disposed on the main body, reflects the display image,
The plane mirror is provided in the main body, reflects the display image reflected by the convex mirror,
The concave mirror is provided on the main body, reflects the display image reflected by the plane mirror,
According to the above configuration, the convex mirror is configured such that the distance between the plane mirror and the concave mirror is such that the convex mirror first reduces the display screen without wasting space, and increases the optical path distance by the plane mirror, The concave mirror enlarges the display screen, and the display screen can maintain the same magnification, so that a longer optical path distance can be obtained, and a far virtual image distance can be obtained. Head-up display device.   The main body includes a light shielding cover, and the convex mirror and the plane mirror are installed on the light shielding cover, and the light shielding cover eliminates stray light that the convex mirror interacts with the plane mirror and the concave mirror. Item 2. The embedded head-up display device according to Item 1.   The embedded head-up display device according to claim 1, wherein the main body is embedded in an instrument panel of a vehicle, and the opening is covered with a transparent dust cover.   The embedded head-up display device according to claim 1, further comprising a reflective film, wherein the reflective film is attached to a windshield.   The embedded head-up display device according to claim 1, wherein a motor gear set is disposed at a bottom of the concave mirror, and a rotation angle of the concave mirror is adjusted by rotation of the motor gear set.   The embedded head-up display device according to claim 1, further comprising a button set, wherein the button set is electrically connected to the circuit board as a function operation.   The embedded head-up display device according to claim 1, further comprising: a light sensing module, wherein the light sensing module is electrically connected to the circuit board and adjusts brightness of the image projection module.   The embedded head-up display according to claim 1, further comprising a speaker module, wherein the speaker module is electrically connected to the circuit board, and a voice message is sent to a driver through the speaker module. apparatus.   The embedded head-up of claim 1, comprising a wireless module, wherein the wireless module is electrically connected to the circuit board to receive signal data wirelessly transmitted by an electronic device. Display device.   The embedded head-up display device according to claim 1, further comprising a connection module, wherein the connection module is electrically connected to the circuit board to receive signal data transmitted by an electronic device. .