KR20230014970A - Head-Up Display Device - Google Patents

Abstract

Disclosed is a head-up display device. According to an embodiment of the present disclosure, provided is a head-up display device, which includes: a housing including an accommodation space therein; a PGU disposed inside the housing and configured to emit an image; one or more reflecting members configured to reflect the image emitted from the PGU; and a dust cover formed in a shape corresponding to an outer circumferential surface of a circular cylinder and coupled to the housing using a hot-melt adhesive. Accordingly, wrinkles on the dust cover can be prevented.

Description

Head-Up Display Device {Head-Up Display Device}

The present disclosure relates to a head-up display device.

The content described in this section simply provides background information for the present disclosure and does not constitute prior art.

A head-up display (HUD) device is a device that allows a driver to see various information related to current speed, navigation, fuel amount, and driving of a vehicle by projecting it onto a windshield of a vehicle. Since the driver can easily view various information related to driving of the vehicle by using the head-up display device, the driver can look ahead with little dispersion of viewpoints even while driving.

The head-up display device includes a housing having an accommodation space therein, a light source emitting light, a liquid crystal display (LCD) emitting an image, a reflection member, and a dust cover ( dust cover) and the like. Due to its characteristics, the head-up display device is installed under the windshield of the vehicle.

The dust cover is a member that prevents foreign substances such as dust from entering the head-up display device. The dust cover is made of a transparent material so that an image related to vehicle driving information transmitted from the LCD and the reflective member is displayed on the windshield. The dust cover may be attached to the housing of the head-up display device using a double-sided tape.

Sunlight penetrates the windshield and enters the interior of the vehicle. Sunlight may be reflected from the dust cover and the windshield to be incident to the driver's eyes, or may pass through the dust cover and be incident to the inside of the head-up display device. There is a problem in that sunlight entering the interior of the vehicle affects the driver's vehicle operation or damages an image related to vehicle driving information displayed on a windshield.

Meanwhile, the dust cover is attached to the housing of the head-up display device using a double-sided tape or the like. There is a problem in that the dust cover is not firmly attached to the housing or wrinkles are formed in the dust cover due to insufficient adhesion of the double-sided tape or the like or resilience of the material of the dust cover.

In the head-up display device according to an embodiment, a dust cover formed in the shape of an outside cylindrical surface of a circular cylinder is installed on a housing so that sunlight affects driving of a driver's vehicle or is displayed on a windshield. It is possible to prevent damage to the image related to the driving information of the vehicle.

In the head-up display device according to an embodiment, the dust cover is not firmly attached to the housing or wrinkles are prevented from being formed on the dust cover by combining the housing and the dust cover using a hot melt adhesive. .

The problems to be solved by the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

According to one embodiment of the present disclosure, the housing including a receiving space therein; a PGU disposed inside the housing and configured to emit an image; one or more reflecting members configured to reflect the image emitted from the PGU; and a dust cover formed in a shape corresponding to an outer circumferential surface of the circular cylinder and coupled to the housing using a hot melt adhesive.

According to an embodiment, the head-up display device has a dust cover formed in the outer circumferential shape of a circular cylinder installed on a housing so that sunlight affects the driving of the driver's vehicle or related to driving information of the vehicle displayed on the windshield. There is an effect of preventing damage to the image.

According to an embodiment, the head-up display device has an effect of preventing the dust cover from being firmly attached to the housing or wrinkles on the dust cover by combining the housing and the dust cover using a hot melt adhesive.

1 is a perspective view of an assembled head-up display device according to an embodiment of the present disclosure.
2 is an exploded perspective view of a head-up display device according to an embodiment of the present disclosure.
FIG. 3 is a cross-sectional view of a head-up display device according to an embodiment of the present disclosure taken in a direction III-III of FIG. 1 .
4 is a view showing the shape and arrangement angle of a dust cover according to an embodiment of the present disclosure.
5 is a diagram illustrating a P polarization reflection axis and an S polarization transmission axis of a dust cover according to an embodiment of the present disclosure.
6 is a diagram illustrating a path of sunlight incident into the interior of a vehicle according to an embodiment of the present disclosure.

Hereinafter, some embodiments of the present disclosure are described in detail using exemplary drawings. In adding reference numerals to components of each drawing, it should be noted that the same components have the same numerals as much as possible, even if they are displayed on different drawings. In addition, in describing the present disclosure, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present disclosure, the detailed description will be omitted.

In describing the components of the embodiment according to the present disclosure, symbols such as first, second, i), ii), a), and b) may be used. These codes are only for distinguishing the component from other components, and the nature or sequence or order of the corresponding component is not limited by the codes. In the specification, when a part is said to 'include' or 'include' a certain component, it means that it may further include other components, not excluding other components unless explicitly stated otherwise. .

1 is a perspective view of an assembled head-up display device according to an embodiment of the present disclosure.

2 is an exploded perspective view of a head-up display device according to an embodiment of the present disclosure.

FIG. 3 is a cross-sectional view of a head-up display device according to an embodiment of the present disclosure taken in a direction III-III of FIG. 1 .

4 is a view showing the shape and arrangement angle of a dust cover according to an embodiment of the present disclosure.

1 to 4, a head-up display device according to an embodiment of the present disclosure includes a housing 100, a dust cover 200, and a Picture Generation Unit (PGU). , 300) and one or more reflection members 400.

The housing 100 may include a lower case 110 and an upper case 120 .

The upper case 120 may include a penetration part 121, a channel 122, and a hot melt adhesive 123.

The reflective member 400 may include a first mirror 410 and a second mirror 420 .

The housing 100 includes an accommodation space therein, and at least a part thereof is a member formed to allow light to pass through. The housing 100 may include a lower case 110 and an upper case 120 .

The lower case 110 is a member having an accommodation space therein. Inside the lower case 110, a plurality of parts of the head-up display device, such as the PGU 300 and the reflective member 400, may be disposed.

The upper case 120 is formed to cover the lower case 110 and components disposed inside the lower case 110 . The upper case 120 may include a through portion 121 and a channel 122 . A hot melt adhesive 123 may be applied to at least a portion of the upper case 120 .

The shape of the penetrating portion 121 is formed so that light passes through at least a portion of the upper case 120 . Since the penetrating portion 121 is formed in the upper case 120, an image related to vehicle driving information transmitted using the PGU 300 and the reflective member 400 can be displayed on the windshield 500 of the vehicle. there is. A dust cover 200 may be installed in the penetrating portion 121 to prevent foreign substances such as dust from entering the housing 100 . At least a portion of the penetrating portion 121 may be curved.

The channel 122 may be formed on at least a portion of the upper case 120 so that the hot melt adhesive 123 is applied. Specifically, the channel 122 may be formed to surround the perimeter of the through portion 121 of the upper case 120 . The upper case 120 and the dust cover 200 may be coupled using the hot melt adhesive 123 applied to the channel 122 . The upper case 120 and the dust cover 200 are coupled using the hot-melt adhesive 123 inserted into the channel 122 without screws and screw holes, thereby forming the appearance of the head-up display device. This has a clearing effect.

The cross section of the channel 122 is formed in a circular or rectangular shape so that the hot melt adhesive 123 is stably applied. However, it is not necessarily limited to a circular or rectangular shape, and may be formed in other shapes according to purposes and uses.

The hot melt adhesive 123 may be applied to at least a portion of the upper case 120 so that the upper case 120 and the dust cover 200 are coupled. Specifically, the hot melt adhesive 123 may be applied to the channel 122 formed to surround the through portion 121 of the upper case 120 .

The main component of the hot melt adhesive 123 is a thermoplastic-resin. The hot melt adhesive 123 is applied to the channel 122 in a liquid state at a temperature equal to or higher than the melting point. After the dust cover 200 is attached to the upper case 120, the hot-melt adhesive 123 is cooled to a temperature below its melting point and changed into a solid state.

As the hot-melt adhesive 123 changes from a liquid to a solid while the dust cover 200 is attached to the upper case 120, the dust cover 200 and the upper case 120 can be firmly coupled. The hot melt adhesive 123 may be applied to the channel 122 of the upper case 120 using a tool such as a glue gun.

4 is a view showing the shape and arrangement angle of a dust cover according to an embodiment of the present disclosure.

Referring to FIG. 4 , the shape and arrangement angle of the dust cover 200 will be described in detail.

The dust cover 200 is a member that prevents foreign substances such as dust from entering the housing 100 . The dust cover 200 may be disposed in the through portion 121 of the upper case 120 . The dust cover 200 may be formed of a transparent material so that an image related to vehicle driving information transmitted from the PGU 300 and the reflective member 400 is displayed on the windshield 500 .

A curved surface may be formed on at least a part of the dust cover 200 . Specifically, the dust cover 200 may be formed in the shape of an outside cylindrical surface of a circular cylinder. The dust cover 200 may be manufactured by cutting a part of the outer circumferential surface of a circular cylinder.

The radius of curvature of the dust cover 200 is formed within a range of 10 mm or more and 300 mm or less. As the dust cover 200 is formed in the outer circumferential shape of a circular cylinder and has a curvature radius of 10 mm or more and 300 mm or less, the path of sunlight is changed so that sunlight enters the driver's eyes or damages images related to vehicle driving information. It has the effect of preventing this. However, it is not necessarily limited to the aforementioned range, and the dust cover 200 may be formed with different curvature radii depending on tolerances of parts, a driver's sitting height, and a vehicle model.

'로 정의한다. 더스트 커버(200)가 차량의 운행 방향(Z축 방향)과 같은 방향으로 배치된 상태에서 '

' 로 정의한다. 차량의 운행 방향을 기준으로 좌측 방향 회전을 '(-)', 우측 방향 회전을 '(+)'로 정의한다. Referring to FIG. 4 , the angle at which the dust cover 200 rotates around the Y-axis in the coordinate axis of the vehicle is '

' is defined as In a state where the dust cover 200 is disposed in the same direction as the driving direction (Z-axis direction) of the vehicle, '

' is defined as Based on the driving direction of the vehicle, leftward rotation is defined as '(-)' and rightward rotation is defined as '(+)'.

범위의 각도로 배치될 수 있다. 구체적으로, 차량의 운전석이 차량의 운행 방향을 기준으로 좌측에 형성된 경우(이하 '좌핸들(left handle)'), 더스트 커버(200)는

각도로 배치될 수 있다. 차량의 운전석이 우측에 형성된 경우(이하 '우핸들(right handle)'), 더스트 커버(200)는

각도로 배치될 수 있다.The dust cover 200 is based on the Y-axis of the vehicle

It can be placed at a range of angles. Specifically, when the driver's seat of the vehicle is formed on the left side of the driving direction of the vehicle (hereinafter 'left handle'), the dust cover 200

Can be placed at an angle. When the driver's seat of the vehicle is formed on the right side (hereinafter 'right handle'), the dust cover 200

Can be placed at an angle.

각도로 배치되는 경우, 차량의 윈드실드(500)를 관통하여 차량의 실내로 입사하는 태양광의 경로가 변경되어 태양광이 운전자의 눈으로 입사하지 않는다. 더스트 커버(200)가

각도로 배치되는 경우에는, 태양광이 운전자의 눈으로 입사하여 차량의 운행에 영향을 미치거나 윈드실드(500)에 표시되는 이미지를 훼손할 수 있다.The dust cover 200 on the left handle

When disposed at an angle, the path of sunlight penetrating the vehicle windshield 500 and entering the interior of the vehicle is changed so that sunlight does not enter the driver's eyes. The dust cover 200

In the case of being disposed at an angle, sunlight may enter the driver's eyes and affect driving of the vehicle or damage an image displayed on the windshield 500 .

각도로 배치되는 경우, 태양광의 경로가 변경되어 태양광이 운전자의 눈으로 입사하지 않는다. 더스트 커버(200)가

각도로 배치되는 경우에는, 태양광이 운전자의 눈으로 입사하여 차량의 운행에 영향을 미칠 수 있다. 다만, 반드시 전술한 범위에 한정되는 것은 아니며, 부품의 공차, 운전자의 앉은키 및 차종 등에 따라 다른 각도로 배치될 수 있다.The dust cover 200 on the right handle

When arranged at an angle, the path of sunlight is changed so that sunlight does not enter the driver's eyes. The dust cover 200

In the case of being arranged at an angle, sunlight may be incident to the driver's eyes and affect driving of the vehicle. However, it is not necessarily limited to the aforementioned range, and may be arranged at different angles depending on the tolerance of parts, the driver's sitting height, and the type of vehicle.

'로 정의한다. 더스트 커버(200)가 차량의 Z축과 평행하게 배치된 상태에서 '

' 로 정의한다. 차량의 운행 방향을 기준으로 좌측 방향 회전을 '(-)', 우측 방향 회전을 '(+)'로 정의한다.The rotation angle of the dust cover 200 relative to the Z-axis in the coordinate axis of the vehicle is '

' is defined as In the state where the dust cover 200 is arranged parallel to the Z-axis of the vehicle, '

' is defined as Based on the driving direction of the vehicle, leftward rotation is defined as '(-)' and rightward rotation is defined as '(+)'.

각도로 배치될 수 있다. 좌핸들의 경우, 더스트 커버(200)는

각도로 배치될 수 있다. 우핸들의 경우, 더스트 커버(200)는

각도로 배치될 수 있다.The dust cover 200 is based on the Z axis of the vehicle

Can be placed at an angle. In the case of a left handle, the dust cover 200

Can be placed at an angle. In the case of a right-hand drive, the dust cover 200

Can be placed at an angle.

각도로 배치되는 경우, 태양광의 경로가 변경되어 태양광이 운전자의 눈으로 입사하지 않는다. 더스트 커버(200)가

각도로 배치되는 경우에는, 태양광이 운전자의 눈으로 입사하여 차량의 운행에 영향을 미칠 수 있다.The dust cover 200 on the left handle

When arranged at an angle, the path of sunlight is changed so that sunlight does not enter the driver's eyes. The dust cover 200

In the case of being arranged at an angle, sunlight may be incident to the driver's eyes and affect driving of the vehicle.

각도로 배치되는 경우, 태양광이 운전자의 눈으로 입사하지 않는다. 더스트 커버(200)가

각도로 배치되는 경우에는, 태양광이 운전자의 눈으로 입사하여 차량의 운행에 영향을 미칠 수 있다. 다만, 반드시 전술한 범위에 한정되는 것은 아니며, 부품의 공차, 운전자의 앉은키 및 차종 등에 따라 다른 각도로 배치될 수 있다.The dust cover 200 on the right handle

When arranged at an angle, sunlight does not enter the driver's eyes. The dust cover 200

In the case of being arranged at an angle, sunlight may be incident to the driver's eyes and affect driving of the vehicle. However, it is not necessarily limited to the aforementioned range, and may be arranged at different angles depending on the tolerance of parts, the driver's sitting height, and the type of vehicle.

By rotating and disposing the dust cover 200 based on the Y-axis and the Z-axis of the vehicle, the path of sunlight passing through the windshield 500 of the vehicle and incident thereon can be changed. By changing the path of sunlight, it is possible to prevent sunlight from entering the driver's eyes to affect vehicle operation or to damage an image related to vehicle driving information.

5 is a diagram illustrating a P polarization reflection axis and an S polarization transmission axis of a dust cover according to an embodiment of the present disclosure.

'로 정의한다. P편광 반사축과 S편광 투과축이 수직으로 형성된 상태에서 '

'로 정의한다. Referring to FIG. 5 , the dust cover 200 may include a P-polarization reflection axis and an S-polarization transmission axis. Based on the state in which the P-polarization reflection axis and the S-polarization transmission axis are formed perpendicularly, the rotation angle of the S-polarization transmission axis is '

' is defined as In the state where the P-polarization reflection axis and the S-polarization transmission axis are formed perpendicularly, '

' is defined as

범위의 각도로 형성될 수 있다. S편광 투과축이

각도로 형성되는 경우, 태양광의 경로가 변경되어 태양광이 운전자의 눈으로 입사하거나, 차량 운행정보와 관련된 이미지를 훼손하지 않는다. S편광 투과축이

또는

의 각도로 형성되는 경우, 태양광이 운전자의 눈으로 입사하거나, 차량 운행정보와 관련된 이미지를 훼손할 수 있다. 다만, 반드시 전술한 범위에 한정되는 것은 아니며, 부품의 공차, 운전자의 앉은키 및 차종 등에 따라 S편광 투과축은 다른 각도로 형성될 수 있다.The S polarization transmission axis is based on the P polarization reflection axis.

It can be formed in a range of angles. S-polarized transmission axis

When formed at an angle, the path of sunlight is changed so that sunlight does not enter the driver's eyes or damage images related to vehicle driving information. S-polarized transmission axis

or

When formed at an angle of , sunlight may enter the driver's eyes or damage an image related to vehicle driving information. However, it is not necessarily limited to the aforementioned range, and the S-polarized light transmission axis may be formed at a different angle depending on the tolerance of parts, the driver's sitting height, and the model of the vehicle.

The dust cover 200 is formed to a thickness of 0.1 mm or more and 2.0 mm or less. As the dust cover 200 is formed to a thickness of 0.1 mm or more and 2.0 mm or less, images related to vehicle driving information are displayed on the windshield 500 of the vehicle without being distorted. However, it is not necessarily limited to the aforementioned range, and the dust cover 200 may be formed to a different thickness depending on tolerances of parts, a driver's sitting height, and a vehicle model.

The PGU 300 is a member that outputs an image related to vehicle driving information. The PGU 300 may include a plurality of light sources, a plurality of diffusers, and a liquid crystal display (LCD).

The reflection member 400 is a member that reflects an image emitted from the PGU 300 . The reflective member 400 may include a first mirror 410 and a second mirror 420 .

The first mirror 410 is a member that reflects the image emitted from the PGU 300 and transmits it to the second mirror 420 . The first mirror 410 may be disposed inside the housing 100 .

The second mirror 420 is a member that reflects the image transferred from the first mirror 410 . The second mirror 420 reflects the image and displays it on the windshield 500 of the vehicle. The second mirror 420 is disposed inside the housing. At least a portion of the second mirror 420 may be curved.

FIG. 3 is a cross-sectional view of a head-up display device according to an embodiment of the present disclosure taken in a direction III-III of FIG. 1 .

Referring to FIG. 3 , effects of the head-up display device according to an embodiment of the present disclosure will be described in detail.

A through portion 121 is formed in at least a portion of the upper case 120 . Light penetrates through the penetrating portion 121 . A circular or rectangular channel 122 is formed in the upper case 120 to surround the through portion 121 . A hot melt adhesive 123 is applied to the channel 122 formed in the upper case 120 . The upper case 120 and the dust cover 200 are coupled using the hot melt adhesive 123 applied to the channel 122 .

The upper case 120 and the dust cover 200 are bonded using the hot melt adhesive 123 applied to the channel 122, thereby forming the central portion of the double-sided tape corresponding to the through portion 121 of the upper case 120. is not wasted, so there is an effect of cost reduction.

Due to the structure of the channel 122 and the adhesive force of the hot-melt adhesive 123, the upper case 120 and the dust cover 200 can be firmly coupled even if the dust cover 200 has a curved surface. Even if the dust cover 200 is made of a material with strong restoring force, the dust cover 200 can be combined with the upper case 120 without wrinkles.

6 is a diagram illustrating a path of sunlight incident into the interior of a vehicle according to an embodiment of the present disclosure.

Referring to FIG. 6 , effects of the head-up display device according to an exemplary embodiment of the present disclosure will be described in detail.

An image related to vehicle driving information is emitted from the PGU 300 and reflected by the first mirror 410 and the second mirror 420 . An image reflected by the second mirror 420 passes through the dust cover 200 and is displayed on the windshield 500 of the vehicle.

When the dust cover 200 is formed in a flat shape, sunlight incident through the windshield 500 of the vehicle is reflected by the dust cover 200 and the windshield 500 and enters the driver's eyes. Sunlight entering the driver's eyes may affect the driving of the driver's vehicle or damage an image related to driving information of the vehicle.

When the dust cover 200 is formed to be curved in the outer circumferential shape of a circular cylinder, the angle of incidence and angle of reflection of sunlight on the dust cover 200 are reduced due to the curved surface of the dust cover 200. . In the windshield 500, the incident angle and reflection angle of sunlight are also reduced.

As a result, sunlight reflected by the dust cover 200 and the windshield 500 is transferred out of the driver's field of view. As the dust cover 200 is formed to be curved in the outer circumferential shape of a circular cylinder, there is an effect of preventing sunlight from affecting the driver's driving or damaging an image related to vehicle driving information.

The above description is merely an example of the technical idea of the present embodiment, and various modifications and variations can be made to those skilled in the art without departing from the essential characteristics of the present embodiment. Therefore, the present embodiments are not intended to limit the technical idea of the present embodiment, but to explain, and the scope of the technical idea of the present embodiment is not limited by these embodiments. The scope of protection of this embodiment should be construed according to the claims below, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of rights of this embodiment.

100: housing 110: lower case
120: upper case 121: through part
122: channel 123: hot melt adhesive
200: dust cover 300: PGU
400: reflective member 410: first mirror
420: second mirror 500: windshield

Claims (10)

a housing including an accommodation space therein;
a Picture Generation Unit (PGU) disposed inside the housing and configured to emit an image;
one or more reflecting members configured to reflect the image emitted from the PGU; and
A dust cover formed in a shape corresponding to the outer circumferential surface of a circular cylinder and coupled to the housing using a hot-melt adhesive.
Head-up display device comprising a. According to claim 1,
The dust cover,
based on the vehicle's Y-axis

An angled head-up display device. According to claim 1,
The dust cover,
based on the Z-axis of the vehicle

An angled head-up display device. According to claim 1,
The dust cover includes a P polarization reflection axis and an S polarization transmission axis. According to claim 4,
The S polarization transmission axis is

A head-up display device formed at an angle. According to claim 1,
The head-up display device wherein the dust cover has a curvature radius of 10 mm or more and 300 mm or less. According to claim 1,
A head-up display device having a channel formed in at least a portion of the housing so that the hot-melt adhesive is applied. According to claim 7,
A head-up display device having a cross section of the channel formed in a circular or polygonal shape. According to claim 1,
The head-up display device wherein the dust cover has a thickness of 0.1 mm or more and 2.0 mm or less. According to claim 1,
The housing includes an upper case and a lower case,
A head-up display device having a through portion formed in at least a portion of the upper case.

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