WO2012131907A1

WO2012131907A1 - Heads-up display and alarm mechanism

Info

Publication number: WO2012131907A1
Application number: PCT/JP2011/057833
Authority: WO
Inventors: 高志飯澤
Original assignee: パイオニア株式会社
Priority date: 2011-03-29
Filing date: 2011-03-29
Publication date: 2012-10-04
Also published as: JP4920805B1; JPWO2012131907A1

Abstract

A heads-up display projects light from a light source onto a display unit, forming a virtual image so as to be visible to a user. The heads-up display is attached to an attachment-receiving part, such as a bracket, on a vehicle body side of a moving body such as a vehicle, using an attachment part provided between the display unit and a light source unit. An alarm member, which produces a sound when the space between the attachment-receiving part and the attachment part exceeds a predetermined value, is provided. A washer, bell member, or the like, can be used as the alarm member. Consequently, if the attachment strength between the attachment part and the attachment-receiving part decreases, and the space becomes larger, the user is informed of the fact by a sound.

Description

Head-up display and notification mechanism

The present invention relates to a head-up display installed on a moving body.

A head-up display that is installed near the driver's seat of a vehicle is known. For example, Patent Document 1 discloses a head-up display that includes a display device and a combiner and is installed on a vehicle interior ceiling.

Generally, the head-up display is fixed to the mounted portion on the vehicle body side with a screw at the ceiling of the passenger compartment.

However, vibrations are generated when the vehicle is traveling, and the screws fixing the head-up display may be loosened due to the vibrations. Therefore, it is desirable for the user to notice such loosening of screws early.

JP-A-5-77657

The above are examples of problems to be solved by the present invention. An object of this invention is to provide the head up display which can alert | report to a user the fall of the attachment intensity | strength of the head up display attached with respect to the mobile body.

The invention according to claim 1 is a head-up display mounted on a moving body, wherein a light source unit that projects light onto a display unit to form a virtual image, and between the display unit and the light source unit An attachment portion for attaching the head-up display to the attachment portion of the moving body, and provided between the attachment portion and the attachment portion, and the attachment portion and the attachment portion. And a notifying member that generates sound between the attachment portion and the attached portion when the interval is larger than a predetermined value.

The invention according to claim 10 is a head-up display, and is provided between an attachment portion for attaching an attachment object to the attachment portion, the attachment portion and the attachment portion, and And a notifying member that generates sound between the attachment portion and the attached portion when the interval between the attachment portion and the attachment portion is equal to or greater than a predetermined value.

The invention according to claim 11 is a notification mechanism, which is provided between an attachment portion for attaching an attachment object to the attachment portion and the attachment portion, and the attachment portion and the attachment portion. It has an informing member which produces a sound by colliding with at least any one of the above-mentioned attaching part or the above-mentioned attachment part because the interval with is a predetermined value or more.

The invention according to claim 12 is a notification mechanism having a notification member provided between the attachment portion for attaching the attachment object to the attachment portion and the attachment portion, wherein the notification member is When the interval between the attachment portion and the attachment portion is equal to or greater than a predetermined value, a vibration is generated between the attachment portion and the attachment portion due to vibration applied to the notification member. Features.

It is a figure which shows typically the state which installed the head up display which concerns on an Example in the vehicle interior. It is the perspective view which looked at the head-up display from diagonally downward. It is a perspective view of the head up display of the 1st example. It is a side view which shows the alerting | reporting mechanism of 1st Example. It is a perspective view of the head up display of the 2nd example. It is a side view which shows the alerting | reporting mechanism of 2nd Example.

In one preferred embodiment of the present invention, a head-up display mounted on a moving body includes a light source unit that projects light onto a display unit to form a virtual image, and a space between the display unit and the light source unit. An attachment portion for attaching the head-up display to the attachment portion of the moving body, and provided between the attachment portion and the attachment portion, and the attachment portion and the attachment portion. And a notifying member that generates sound between the attachment portion and the attached portion when the interval is larger than a predetermined value.

The above head-up display projects light from the light source onto the display unit, forms a virtual image, and makes the user visually recognize. The head-up display is attached to an attachment portion of a moving body such as a vehicle, for example, a bracket on the vehicle body side, by an attachment portion provided between the display portion and the light source portion. Here, an informing member is provided between the attaching portion and the attached portion so as to generate a sound when the interval is larger than a predetermined value. Therefore, when the attachment strength between the attachment portion and the attachment portion decreases and the interval increases, this is notified by sound.

In one aspect of the head-up display, the notifying member generates the sound by vibration applied to the notifying member. Further, the notification means does not generate the sound when the interval between the attached portion and the attachment portion is equal to or less than the predetermined value, and generates the sound when the interval is larger than the predetermined value.

In one aspect of the head-up display, the notification member causes the sound by colliding against at least one of the attachment portion and the attachment portion. In a preferred example in this case, the head-up display has a mounting screw for mounting the mounting portion on the mounted portion, and the notification member has a through hole larger than the diameter of the mounting screw, and the mounting screw Is provided in a state of penetrating through the through hole. As a result, when the mounting screw is loosened, the notification member vibrates and collides with the mounting portion or the mounted portion to generate sound.

In another aspect of the above head-up display, the notification member has a dome shape, and the top of the dome shape faces the attached portion side. Thereby, the collision sound is more likely to be reflected.

In another aspect of the head-up display, the notification member is formed of a metal piece and a bell that covers the metal piece, and an interval between the attached portion and the attachment portion is equal to or less than the predetermined value. In this case, the metal piece is fixed by being sandwiched by the bell, and when the interval between the attached portion and the attachment portion is equal to or greater than the predetermined value, the metal piece by the bell is The sound is generated by releasing the fixation.

In another aspect of the head-up display, the notification member is fixed to one end of an elastic member having a predetermined length, and is provided between the attachment portion and the attachment portion. The other end of the member is fixed to the mounting portion. In a preferred example in this case, the other end of the elastic member is fixed at a position where the attachment portion does not contact the attached portion when the attachment portion is attached to the attached portion. When the interval between the attachment portion and the attachment portion increases, the elastic member vibrates due to vibration, and a sound is generated from the notification member.

Another preferred embodiment of the present invention is a head-up display, which is provided between an attachment portion for attaching an attachment object to an attachment portion, and the attachment portion and the attachment portion. And a notifying member that generates a sound between the attachment portion and the attachment portion when the interval between the attachment portion and the attachment portion is larger than a predetermined value.

The head-up display is attached to an attachment portion of a moving body such as a vehicle, for example, a bracket on the vehicle body side, by an attachment portion provided between the display portion and the light source portion. Here, an informing member is provided between the attaching portion and the attached portion so as to generate a sound when the interval is larger than a predetermined value. Therefore, when the attachment strength between the attachment portion and the attachment portion decreases and the interval increases, this is notified by sound.

Another preferred embodiment of the present invention is a notification mechanism, which is provided between an attachment portion for attaching an attachment object to the attachment portion and the attachment portion, and the attachment portion and the attachment portion. When the distance to the portion is equal to or greater than a predetermined value, the information member has a notification member that generates a sound by colliding against at least one of the attachment portion and the attached portion. The notification mechanism generates a sound by colliding with the attached portion and / or the attaching portion when the attachment strength between the attaching portion and the attached portion is reduced and the interval is increased.

Another preferred embodiment of the present invention is a notification mechanism having a notification member provided between an attachment portion for attaching an attachment object to the attachment portion and the attachment portion, and the notification member Is caused to generate a sound by vibrating between the mounting portion and the mounted portion by vibration applied to the notification member when the interval between the mounted portion and the mounting portion is a predetermined value or more. . When the attachment strength between the attachment portion and the attachment portion decreases and the interval increases, the notification mechanism generates a sound by vibrating between the attachment portion and the attachment portion.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

FIG. 1 schematically shows a state in which the head-up display according to the embodiment is installed in a vehicle cabin. FIG. 1 is a side view of the driver's seat of the vehicle 1, and the driver 7 sits on the seat 5 in the passenger compartment. There is a roof 2 of the vehicle above the driver 7 and a ceiling 3 of the passenger compartment below. A windshield 4 of the vehicle 1 is located in front of the driver 7.

The head-up display 10 is installed diagonally upward in front of the driver 7. Although details will be described later, the head-up display 10 includes a light source unit 11 and a combiner 12. As indicated by a broken line, the light emitted from the light source unit 11 is reflected by the combiner 12 and reaches the eyes of the driver 7. Accordingly, the driver 7 visually recognizes the virtual image 30 at a position in front of the vehicle. Note that the tip of the arrow of the virtual image 30 indicates the upward direction.

(First embodiment)
FIG. 2 is a perspective view of the head-up display 10 according to the first embodiment when viewed obliquely from below, and FIG. 3 is a perspective view of the head-up display 10 viewed obliquely from above. The head-up display 10 includes a light source unit 11, a combiner 12, an arm 13, an attachment stay 14, and a holding member 15.

The mounting stay 14 is a member that serves as a base when the head-up display 10 is attached to the vehicle. In this embodiment, the mounting stay 14 is an elongated flat plate, and a plurality of long holes 14a are formed. The attachment stay 14 is attached to the bracket 20 provided on the vehicle body side by screws 21.

The light source unit 11 is equipped with a light source (not shown) such as a laser diode. The light emitted from the light source unit 11 is projected to the combiner 12. The combiner 12 reflects the light emitted from the light source unit 11 toward the eyes of the driver 7.

The light source unit 11 is fixed to the holding member 15 with, for example, screws. The holding member 15 is fixed to the mounting stay 14 with screws.

The arm 13 is attached to the holding member 15. The arm 13 is provided with a combiner holding portion 13 a that holds the combiner 12 near the tip of the arm 13, that is, near the end opposite to the light source portion 11.

In the above configuration, the combiner 12 is an example of the display unit of the present invention, the mounting stay 14 is an example of the mounting unit, the bracket 20 provided on the vehicle body side is an example of the mounted unit, and the screw 21 is mounted. It is an example of a screw.

Next, the notification mechanism in the first embodiment will be described. In the first embodiment, when the attachment stay 14 is attached to the bracket 20, a notification mechanism is configured by providing a washer 22 between the attachment stay 14 and the bracket 20 as shown in FIG. 3.

The details will be described below. FIG. 4 is a side view showing the structure of the notification mechanism of the first embodiment. In addition, in order to clarify the distinction between members, each member is hatched. As shown in FIGS. 3 and 4A, a washer 22 is disposed between the bracket 20 on the vehicle body side and the mounting stay 14 at the position of the elongated hole 14 a of the mounting stay 14. The washer 22 includes a through hole 22 a having a diameter larger than that of the screw 21. As shown in FIG. 4B, the screw 21 passes through the long hole 14 a of the mounting stay 14 and the through hole 22 a of the washer 22 and is screwed into a screw thread provided in the bracket 20. When the screw 21 is sufficiently screwed into the bracket 20, the bracket 20, the washer 22, and the mounting stay 14 are in close contact with each other as shown in FIG. At this time, the bracket 20 and the mounting stay 14 have an interval Gx substantially equal to the thickness of the washer 22 (this interval is referred to as a “predetermined value Gx”).

Thereafter, when the screw 21 is loosened due to vibration or the like generated when the vehicle travels, as shown in FIG. 4C, the gap G between the bracket 20 and the mounting stay 14 is a predetermined value shown in FIG. It becomes larger than Gx. At this time, the washer 22 vibrates as indicated by an arrow due to the vibration of the vehicle, and collides with the bracket 20 and / or the mounting stay 14 to generate abnormal noise. The user can know that the screw 21 is loose by this abnormal noise generated above the head.

4A to 4C, the flat plate washer 22 is used. Instead, a dome type washer 25 may be used as shown in FIG. 4D. The washer 25 also has a through hole having a diameter larger than the diameter of the screw 21. Due to its shape, the dome-shaped washer 25 has a structure in which the collision sound is more likely to be reflected than the flat washer 22. Preferably, as shown in FIG. 4D, the dome-shaped washer 25 is arranged so that the top 25a faces the bracket 20 and the dome-shaped open end 25b faces the mounting stay 14.

In general, a washer is used for the purpose of stabilizing the seating surface in the case of fastening with a screw or fastening with a bolt and a nut. In this case, a position in direct contact with the screw or bolt is shown in FIG. ), A washer is disposed between the screw 21 and the mounting stay 14. The washer 22 in the first embodiment is different from this and is used for the purpose of generating abnormal noise due to vibration when the mounting strength is reduced. It is arranged between the stay 14.

(Second embodiment)
Next, the notification mechanism according to the second embodiment will be described with reference to FIGS. FIG. 5 is a perspective view of a head-up display according to the second embodiment, and FIG. 6 is a side view showing a notification mechanism according to the second embodiment. In addition, in order to clarify the distinction between members, each member is hatched.

As shown in FIG. 5, the second embodiment differs from the first embodiment in that a bell (tin) member 40 is used instead of the washer 22, but the basic structure of the head-up display 10 is the first embodiment. Similar to the example.

A detailed configuration of the bell member 40 is shown in FIG. The bell member 40 includes a plate spring 43 having elasticity, an ellipse bell 41 made of metal, for example, provided at one end of the plate spring 43, and a sphere 42 such as a metal piece sealed inside the bell body 41. With. The bell 41 and the sphere 42 are made of, for example, metal. It is preferable that the bell 41 has some elasticity. When the sphere 42 collides with the inner surface of the bell 41, an abnormal noise is generated. The other end of the leaf spring 43 is fixed to the mounting stay 14 with a screw 44.

In the state in which the head-up display 10 is correctly fixed, the bell 41 is fixed between the bracket 20 and the mounting stay 14 as shown in FIG. 6B. Since the bell 41 has a certain degree of elasticity, it is deformed by being sandwiched between the bracket 20 and the mounting stay 14, and the ball 42 is sandwiched and fixed between the inner surfaces (upper and lower surfaces) of the bell 41. In this state, even if vehicle vibration or the like occurs, the sphere 42 cannot vibrate and no abnormal noise is generated. The distance between the bracket 20 and the mounting stay 14 at this time is set to a predetermined value Gy.

Thereafter, when the screw 21 is loosened due to the vibration of the vehicle, the gap G between the bracket 20 and the mounting stay 14 becomes larger than a predetermined value Gy as shown in FIG. 6C, and the fixation of the sphere 42 by the bell 41 is released. Is done. The vibration of the vehicle causes the leaf spring 43 to vibrate, the vibration is transmitted to the bell body 41, and the sphere 42 collides with the bell body 41, and abnormal noise is generated. The bell member 40 basically generates abnormal noise due to the collision between the bell 41 and the sphere 42. Therefore, unlike the first embodiment, even if the bell 41 does not collide with the bracket 20 or the mounting stay 14, an abnormal noise is generated if the leaf spring 43 vibrates due to the vibration of the vehicle. However, the bell 41 may collide with the bracket 20 or the mounting stay 14 to generate abnormal noise.

Moreover, it is good also as a structure which connects the washer 22 with the leaf | plate spring 43 instead of a bell member. In this case, the washer 22 is vibrated by the leaf spring, so that it collides with the bracket 20 or the mounting stay 14 and generates an abnormal noise.

In general, vibrations generated by running of the vehicle generally have a frequency of about 10 to 30 Hz. Therefore, the length and thickness of the leaf spring 43 are adjusted so that the resonance frequency of the leaf spring 43 is within this range. By determining the spring constant, the leaf spring 43 can be vibrated more efficiently and abnormal noise can be easily generated.

In the above example, the other end of the leaf spring 43 is fixed to the mounting stay 14 with a screw 44, but may be fixed by other methods, for example, using a snap fit.

The present invention can be used for a head-up display installed on a moving body such as a vehicle.

DESCRIPTION OF SYMBOLS 1 Vehicle 3 Ceiling 4 Windshield 7 Driver 10 Head-up display 11 Light source part 12 Combiner 13 Arm 14 Mounting stay 20 Bracket

Claims

A head-up display mounted on a moving body,
A light source unit that projects light onto the display unit to form a virtual image;
An attachment portion provided between the display portion and the light source portion, for attaching the head-up display to the attachment portion of the movable body;
It is provided between the mounting part and the mounted part, and a sound is generated between the mounting part and the mounted part when the interval between the mounted part and the mounting part is larger than a predetermined value. A notification member;
A head-up display comprising:
The head-up display according to claim 1, wherein the notification member generates the sound by vibration applied to the notification member.
The informing means does not generate the sound when the interval between the mounted portion and the mounting portion is equal to or less than the predetermined value, and generates the sound when the interval is larger than the predetermined value. The head-up display according to claim 2.
The head-up according to any one of claims 1 to 3, wherein the notification member generates the sound by colliding with at least one of the attachment portion and the attachment portion. display.
A mounting screw for mounting the mounting portion on the mounted portion;
The head-up display according to claim 4, wherein the notification member has a through hole larger than a diameter of the mounting screw, and the mounting screw is provided in a state of passing through the through hole.
The head-up display according to claim 5, wherein the notifying member has a dome shape, and the top of the dome shape faces the attached portion side.
The notification member is formed of a metal piece and a bell covering the metal piece, and when the interval between the attached portion and the attachment portion is equal to or less than the predetermined value, the metal piece is formed by the bell. When the gap between the attached portion and the attaching portion is equal to or greater than the predetermined value, the sound is generated by releasing the metal piece from the bell. The head-up display according to claim 3, wherein:
The notification member is fixed between one end of an elastic member having a predetermined length and is provided between the attachment portion and the attached portion,
The head-up display according to claim 1, wherein the other end of the elastic member is fixed to the attachment portion.
The other end of the elastic member is fixed to a position where the attachment portion does not contact the attached portion when the attachment portion is attached to the attached portion. Head-up display.
A mounting part for mounting the mounting object on the mounted part;
It is provided between the mounting part and the mounted part, and a sound is generated between the mounting part and the mounted part when the interval between the mounted part and the mounting part is a predetermined value or more. A notification member;
A head-up display comprising:
The attachment portion is provided between an attachment portion for attaching an object to be attached to the attachment portion and the attachment portion, and an interval between the attachment portion and the attachment portion is a predetermined value or more. Alternatively, the notification mechanism includes a notification member that generates a sound by colliding with at least one of the attached portions.
A notification mechanism having a notification member provided between an attachment portion for attaching an attachment object to the attachment portion and the attachment portion,
The notification member vibrates between the attachment portion and the attached portion due to vibration applied to the notification member when a distance between the attachment portion and the attachment portion is equal to or greater than a predetermined value. An informing mechanism characterized by generating