JP2014069692A - Alarm device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an alarm device for a vehicle capable of installing a speaker by suppressing a size increase in the device.SOLUTION: In an alarm device 1 for a vehicle including an indicator 2 for outputting visual information to be projected on a member 7 to be projected to be visually observed by a visual observer 101, auditory information output means 8 for outputting auditory information, and a housing 5 housing the indicator 2 and the auditory information output means 8 and provided with a housing opening part 6 for emitting the visual information, the housing opening part 6 is trapezoidal and continuously expands from the visual observer 101 side toward the member 7 to be projected, and a wall part 61 constituting the housing opening part 6 is provided with the auditory information output means 8.

Description

  The present invention relates to a vehicle alarm device mounted on a vehicle such as an automobile.

  A conventional vehicle alarm device is disclosed in Patent Document 1, for example. In this vehicle alarm device, the direction in which the light (or image) emitted by the image projection element and reflected by the front window is directed and the direction in which the sound emitted from the speaker and reflected by the front window is directed are substantially or substantially the same. By making them the same, the direction in which the virtual image can be seen by the vehicle occupant and the direction in which the sound can be heard are matched or substantially matched.

JP 2010-202100 A

  Since the conventional vehicle alarm device has the speaker built in the instrument panel, the volume of the vehicle alarm device is large, and a space for arranging the speaker can be provided. The vehicle alarm device disposed and fixed on the instrument panel is small in size, and when the speaker is installed, the volume of the vehicle alarm device is increased, which hinders downsizing and impairs aesthetics. There was a point.

  Accordingly, an object of the present invention is to provide a vehicle alarm device that can solve the above-described problems, suppress an increase in size, and can be provided with a speaker.

  The vehicle alarm device according to the present invention includes a display that outputs visual information projected on a projection target member visually recognized by a viewer, an auditory information output unit that outputs auditory information, the display, and the auditory information output unit. And a housing having a housing opening from which the visual information is emitted, and the housing opening 6 is continuously provided from the viewer side toward the projection target member. In an enlarged trapezoidal shape, the auditory information output means is provided on a wall portion constituting the housing opening.

  Further, the wall portion has an inner side surface that is inclined above the center of the housing opening, and the auditory information output means is provided on the inner side surface.

  The auditory information output means for the viewer's left ear is provided on the right wall portion of the left and right wall portions, and the auditory information output device for the viewer's right ear is provided on the left wall portion. Information output means is provided.

  The present invention can provide an alarm device for a vehicle that can achieve an intended purpose, suppress an increase in size of the device, and can be provided with a speaker.

1 is a schematic view of a vehicle alarm device according to a first embodiment of the present invention. The perspective view of the alarm device for vehicles of the embodiment. The perspective view of the alarm device for vehicles of the embodiment. Sectional drawing of the alarm device for vehicles of the embodiment. The schematic diagram which shows the optical path and acoustic path of the embodiment. Sectional drawing of the principal part of the alarm device for vehicles of the embodiment. The schematic diagram of the speaker output balance of the embodiment. The schematic diagram of the speaker output balance of other embodiment.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  A vehicle alarm device 1 according to an embodiment of the present invention is a head-up display device 1, and FIG. 1 shows an overall configuration of the head-up display device 1. The head-up display device 1 is configured as a stationary head-up display device 1 that is mounted on a dashboard D of a vehicle.

  In the following description, the head-up display device 1 is viewed from the viewer 101 viewing the display image V to be displayed. The upward direction is “up”, the downward direction is “down”, the forward direction is “front”, and the backward direction. Is “rear” (see double-headed arrows in FIG. 5), each part of the head-up display device 1 will be described as appropriate.

  The display light L that is visual information emitted from the head-up display device 1 is reflected by the projection member 7 and reaches the viewer 101 who is a driver driving the vehicle. The viewer 101 visually recognizes the display image V that is a virtual image displayed in front of the projection target member 7.

  The head-up display device 1 mainly includes a display 2, a reflecting member 3, a housing 5, a projection member 7, and an auditory information output unit 8.

  The display 2 emits display light L representing a display image for informing visual information including information about the vehicle such as a vehicle speed and a travel distance. For example, a light emitting diode is used as a self-luminous display. Display device, or a transmissive liquid crystal display composed of a liquid crystal panel and a backlight light source. The display 2 outputs the visual information as display light L based on a signal from a control unit such as an ECU (electronic control unit) mounted on the vehicle.

  The reflecting member 3 is a mirror and reflects the display light L emitted from the display 2 to the projection target member 7. The reflecting member 3 of this embodiment is a concave mirror. The reflection member 3 is located on the viewer 101 side, that is, on the emission side of the display light L with respect to the display 2, and reflects the reached display light L toward the projection member 7.

  The reflecting member 3 is made of, for example, a resin molded product on which aluminum is vapor-deposited, and has a reflecting surface configured as a concave curved surface that efficiently reflects the display light L from the display 2 to the projection target member 7 (see FIG. 2 and 3, the reflecting surface is schematically represented as a plane). Further, the reflecting surface of the reflecting member 3 is substantially opposed to the concave surface of the projection member 7. The display image V is distorted by the concave surface of the projection member 7. The reflection member 3 corrects the distortion of the display light L (display image V) from the display 2 and irradiates the projection target member 7. Further, the reflecting member 3 is arranged so that the reflecting surface thereof is substantially opposite to the display surface of the display 2. The display light L emitted from the display device 2 reaches the reflecting member 3. Then, the display light L corrected by the reflecting member 3 passes through the housing opening 6 of the housing 5 and travels toward the projection target member 7.

  The housing 5 is composed of upper and lower housings 5U and 5L made of a resin material such as ABS. The housing 5 includes an indicator 2, a circuit board made up of circuit components (not shown), and the reflection member 3. The auditory information output means 8 is accommodated. The housing 5 includes two openings. The display light L emitted from the display 2 is irradiated with the display opening 4 that is irradiated toward the reflecting member 3 and the display light L reflected by the reflecting member 3 is received. And a housing opening 6 that emits light toward the projection member 7. A projection member 7 is attached to the outside of the housing 5.

  The width of the housing 5 is large on the front side and small on the rear side, and has a trapezoidal shape when the housing 5 is viewed from above. That is, by reducing the width on the viewer 101 side and making the housing 5 trapezoidal, the package is miniaturized and the aesthetic appearance is improved. When the head-up display device 1 is installed on the dashboard D, the viewer 101 does not feel the head-up display device 1 greatly.

  The housing opening 6 formed in the housing 5 has a trapezoidal shape that continuously expands from the viewer 101 side (the reflecting member 3 side) toward the projection member 7 and includes wall portions 61L and 61R on the left and right. The housing opening 6 blocks stray light that should not be reflected by the light other than the display light L from the display 2 or the reflecting member 3, and the circuit board configured in the housing 5, the reflecting member 3, The auditory information output means 8 is accommodated.

  Moreover, inner side surfaces 63L and 63R are provided inside the housing openings 6 of the walls 61L and 61R. The inner side surfaces 63L and 63R are inclined upward in the center of the housing opening 6. The inner side surfaces 63L and 63R are provided with through holes 62 through which auditory information output from the auditory information output means 8 passes.

  The projection target member 7 is a combiner that reflects and projects the display light L, and is formed by performing a surface treatment on a plate-like body having translucency such as acrylic and having a curved surface. In the present embodiment, it is disposed and fixed on the housing 5 and located above the display 2. The combiner 7 reflects the display light L from the display device 2 toward the viewer 101. When the display light L is reflected by the viewer 101, the viewer 101 visually recognizes the display image V, which is a virtual image, and the landscape.

  The concave surface of the combiner 7 is substantially opposed to the reflecting surface of the reflecting member 3. As shown in FIG. 4, the combiner 7 changes the optical path of the incident display light L by reflection at the reflecting member 3. The concave surface of the combiner 7 has a function of condensing and expanding the display light L, and makes the display size of the virtual image larger than in the case of simply reflecting the light, and is farther forward (for example, about 1 m ahead of the combiner 7). It is comprised as a curved surface which can be formed in. The combiner 7 forms a display image V of the display image at the front position thereof and transmits light from the front, so that the head-up display device 1 can display the display image V and the outside scene actually existing in front. Both can be visually recognized by the viewer 101.

  In the optical path of the display light L emitted from the display 2, the display light L irradiated from the display 2 passes through the display opening 4, is reflected by the reflecting member 3, and is projected from the housing opening 6 to the combiner 7. This is the path of the display light L until it is generated. The display light L that has passed through this optical path is reflected by the combiner 7 and provides a display image V that is a virtual image to the visual field of the viewer 101.

  The auditory information output means 8 is a speaker, and includes a pair of left and right speakers 8 in the present embodiment. The speaker 8 emits auditory information as sound. For example, the frequency range of the emitted sound is 400 Hz to 4 kHz. A speaker 8L is provided on the left wall 61L of the housing opening 6 (see FIG. 2), and a speaker 8R is provided on the right wall 61R of the housing opening 6. In consideration of the reflection on the combiner 7, the speaker 8 is preferably covered with a non-glossy black exterior component, and is housed in the housing 5 in this embodiment.

  A method of fixing the speaker 8 will be described by taking as an example a case where the speaker 8 is installed on the left wall 61L of the housing opening 6 as shown in FIG. A groove 51 is provided inside the lower case 5L of the housing 5, and a part of the speaker 8L is inserted into the groove 51 and fixed with an adhesive or the like. Note that the fixing method of the speaker 8L is not limited to the present embodiment, and screws, leaf springs, and hooks may be used.

  The sound of the speaker 8 is reflected by the combiner 7 and transmitted to the ear of the viewer 101.

  Next, the arrangement of the speakers 8 and the course (sound path) 9 of the sound output from the speakers 8 will be described with reference to FIG. The housing opening 6 is substantially similar to the outer shape of the housing 5, and is formed so that the width increases toward the combiner 7. Speakers 8 </ b> L and 8 </ b> R are arranged on the walls 61 </ b> L and 61 </ b> R of the housing opening 6. Can be set. Auditory information emitted from the speakers 8L and 8R goes straight, is reflected by the combiner 7, and is transmitted to the right ear 101R of the viewer 101.

  Auditory information emitted from the speaker 8L provided on the left wall 61L of the housing opening 6 goes straight toward the right side of the combiner 7, is reflected on the right side of the combiner 7, and is directed to the right ear 101R of the viewer 101. The acoustic path 9 is transmitted.

  Similarly, the auditory information emitted from the speaker 8R provided on the right wall 61R of the housing opening 6 travels straight toward the left side of the combiner 7, is reflected on the left side of the combiner 7, and is reflected to the left of the viewer 101. The acoustic path 9 is transmitted to the ear 101L.

  Since it is such an acoustic path 9, the auditory information is transmitted to the viewer 101 along the optical path of the display light L, so that the auditory information can be heard from the same direction as the direction of visually recognizing the visual information, It becomes easy to intuitively recognize the relationship between visual information and auditory information.

  In addition, by arranging the speaker 8 in the housing opening 6, it is possible to emit auditory information toward the combiner 7 at an optimal angle without securing a dedicated mounting space, and the volume of the housing 5 is maintained. The speaker 8 can be arranged in a small space without deteriorating the beauty.

  Next, control of the speaker 8 of this embodiment will be described with reference to FIG.

  The speaker 8R and the speaker 8L are independently controlled, and output auditory information in accordance with the type of alarm, the direction in which attention is desired, and the like. For example, in order to call attention to the right direction of the visual information, the auditory information is output from the speaker 8L, and the speaker 8R is not driven. (Hearing information 8Rp = 0) The auditory information 8Lp from the speaker 8L is reflected by the combiner 7 and transmitted to the right ear 101R of the viewer 101. Therefore, the viewer 101 obtains auditory information from the right side (of the visual information), and it becomes easy to direct the viewer's 101 attention to the right side of the visual information. The viewer 101 can intuitively confirm the visual information based on the auditory information from the right side. Similarly, the auditory information 8Rp is output from the speaker 8R and the speaker 8L is not used, so that the viewer 101 obtains auditory information from the left side. Further, by controlling the output balance (sound pressure and timing) of each speaker 8, the position of the auditory information given to the viewer 101 can be controlled to provide intuitive information.

  Next, the control of the speaker 8 different from the above-described embodiment will be described with reference to FIG.

  This method for controlling the speaker 8 is to sequentially change the output sound pressure of the speaker 8. For example, 80 dB of auditory information 8Lp is output from the speaker 8L as the first alarm. Subsequently, the auditory information 8Rp of the speaker 8L to 40 dB and the speaker 8R to 40 dB is output as the second alarm. As a third alarm, 80 dB of auditory information 8Rp is output from the speaker 8R. By performing the subordinate control in this manner, the viewer 101 can obtain auditory information with a constant sound pressure output at 80 dB moving from right to left, and can guide the target direction of attention.

  With the above configuration, the acoustic path 9 of the auditory information output from the speaker 8 intersects and is reflected by the combiner 7, and the auditory information is provided to the ears 101 </ b> L and 101 </ b> R of the viewer 101. It is possible to suppress sound utterance that occurs due to multiple reflections of auditory information.

  In addition, since the speaker 8 is independently controlled and can provide auditory information that is emphasized in either the left or right ear, directional information is added to the auditory information for the viewer 101 to provide easy-to-understand information. can do.

  In addition, the speaker 8 is independently controlled, and the continuous auditory information moves from either the left or right side to the opposite side, so that the direction of attention of the viewer 101 can be guided to the destination of the auditory information.

  The present invention can be used for a vehicle alarm device mounted on a vehicle such as an automobile.

1 Vehicle alarm device (head-up display device)
2 Display 3 Reflecting member 4 Display opening 5 Housing 5U Upper housing 5L Lower housing 6 Housing opening 7 Projected member (combiner)
8 Auditory information output means (speaker)
8L, 8R Speaker 9 Acoustic path 61L, 61R Wall 62 Through hole 63L, 63R Inner side surface 101 Viewer (driver)
101L Left ear 101R Right ear D Dashboard L Display light (visual information)
V Display image (virtual image)

Claims (3)

A display that outputs visual information projected on a projection target member visually recognized by a viewer, an auditory information output unit that outputs auditory information, the display and the auditory information output unit, and the visual information is stored. In a vehicle alarm device comprising a housing having a housing opening that emits,
The vehicle is characterized in that the housing opening has a trapezoidal shape that continuously expands from the viewer side toward the projection member, and the auditory information output means is provided on a wall that forms the housing opening. Alarm device. The said wall part has the inner surface inclined in the center upper direction of the said housing opening part, The through-hole through which the auditory information output from the said auditory information output means passes was provided in the said inner surface. The vehicle alarm device according to 1. The auditory information output means for the viewer's left ear is provided on the right wall portion of the wall portions provided on the left and right, and the auditory information output for the viewer's right ear is provided on the left wall portion. The vehicle alarm device according to claim 1, further comprising means.

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