WO2016117857A1 - Head-up display housing case and head-up display device - Google Patents

Abstract

Provided are a head-up display (HUD) housing case and an HUD device including the same, the housing case including a flocking layer formed on the inner surface of a housing body, wherein the flocking layer has fibers implanted therein.

Description

Housing case and head-up display unit for head-up display

A housing case for a head-up display and a head-up display device.

The head-up display device is a device that allows drivers to easily check the speed, road conditions, incoming calls, calls, or navigation information of the vehicle without having to bend the head while driving. Can be projected onto the windshield of the vehicle.

The head-up display device may generally include a light emitting element, a display element, a reflecting mirror, a housing case, and the like, and the image generated from the display element is irradiated onto the windshield of the vehicle through the transparent cover of the housing case so that the above-mentioned information is obtained from the vehicle. Can be projected onto the windshield.

In one embodiment of the present invention, there is provided a housing case for a head-up display to reduce the reflectance and glossiness on the inner surface of the housing body to implement excellent visibility and excellent stability.

In another embodiment of the present invention, there is provided a head-up display device that realizes excellent visibility and excellent stability.

However, the technical problem to be achieved by the present invention is not limited to the above-mentioned problem, another task that is not mentioned will be clearly understood by those skilled in the art from the following description.

In one embodiment of the invention, comprising a flocking layer (flocking layer) formed on the inner surface of the housing body, the flocking layer is a housing case for a head-up display (HUD) formed by the fiber is planted To provide.

The planting layer may be formed on some or all of the inner surface of the housing body in which light is reflected when driving the head-up display.

The planting layer may be formed on an inner surface of which light is reflected toward a reflective mirror or a translucent cover among the inner surfaces of the housing body where the light is reflected when driving the head-up display.

The seedling layer may be formed by planting fibers through the adhesive applied on the inner surface of the housing body.

The fibers can be planted by an electrostatic wool method.

The average fineness of the fibers may be from about 0.8 denier to about 27 denier.

The average diameter of the fibers may be about 10 μm to about 50 μm.

The average length of the fibers may be about 0.1 mm to about 5.0 mm.

The planting layer may have a weight of the fiber flocked per unit area of about 20.0 g / m ² to about 80.0 g / m ² .

The fibers may include at least one selected from the group consisting of nylon fibers, rayon fibers, polyethylene fibers, polypropylene fibers, polyurethane fibers, polyester fibers, polyethylene terephthalate fibers, polyamide fibers, and combinations thereof.

The adhesive may be an aqueous adhesive.

The housing case is polymethyl methacrylate (PMMA, polymethylmethacrylate), polyvinyl chloride (PVC, polyvinyl chloride), polyethylene (PE, polyethylene), polypropylene (PP, polypropylene), polystyrene (PS, polystyrene), acrylonitrile At least one selected from the group consisting of butadiene styrene (ABS, acrylonitrile butadiene styrene), polyamide (PA, polyamide; nylon), polyethylene terephtalate (PET), polycarbonate (PC, polycarbonate), and combinations thereof It may be a material.

In another embodiment of the present invention, there is provided a head-up display (HUD) device comprising; a housing case for the head-up display.

The reflectance of the light in the visible light region with respect to the inner surface of the housing body in which the tuft layer is formed may be about 3.0% or less.

The wavelength of the light in the visible light region may be about 360nm to about 740nm.

About 60 ° glossiness of the light in the visible region to the inner surface of the housing body in which the tufts are formed may be about 0.5% or less.

About 85 ° glossiness of the light in the visible region to the inner surface of the housing body in which the tufts are formed may be about 2.0% or less.

At least one selected from the group including a light emitting element, a display element, a reflecting mirror, and a combination thereof may be accommodated in the housing case, and an opening formed on the housing case may be covered with a transparent cover.

The light emitting device may be a light emitting diode (LED).

The display device may be a liquid crystal display (LCD), a liquid crystal on silicon (LCoS), or a thin film transistor liquid crystal display (TFT-LCD).

The housing case for the head-up display may implement excellent visibility and excellent stability.

1 is a schematic diagram of a housing case for a head-up display according to an embodiment of the present invention.

2 is a schematic cross-sectional view of the tufts formed on the inner surface of the housing body included in the housing case.

3 is a schematic structural diagram of a head-up display device according to another embodiment of the present invention.

FIG. 4 is a schematic diagram showing a portion in which a planting layer is formed among the inner surfaces of the lower housing body included in the housing case for the head-up display according to the first embodiment.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

In order to clearly describe the present invention, parts irrelevant to the description are omitted, and like reference numerals designate like elements throughout the specification.

In the drawings, the thickness of layers, films, panels, regions, etc., are exaggerated for clarity. In the drawings, the thicknesses of layers and regions are exaggerated for clarity.

In the following, any configuration is formed on the top (or bottom) of the substrate or on the top (or bottom) of the substrate, not only means that the arbitrary configuration is formed in contact with the top (or bottom) of the substrate, but also the substrate It is not limited to not including other configurations between and any configuration formed on (or under) the substrate.

In one embodiment of the invention, comprising a flocking layer (flocking layer) formed on the inner surface of the housing body, the flocking layer is a housing case for a head-up display (HUD) formed by the fiber is planted To provide. 1 schematically shows a schematic diagram of a housing case 100 for a head-up display according to an embodiment of the present invention. In addition, FIG. 2 schematically illustrates a cross-sectional view of the seedling layer 120 formed on the inner surface of the housing body 110 included in the housing case 100.

 The head-up display device is a device capable of projecting the speed, road conditions, or navigation information of the vehicle on the windshield of the vehicle, for example, Korean Utility Model Publication No. 20-2010-0001771 or Korean Publication. As shown in Patent Publication No. 10-2014-0078661, it is manufactured in a structure including a housing case for accommodating a light emitting element, a display element, a reflecting mirror, and the like.

For example, the housing case may be formed in a box-shaped structure, or may be formed in a structure in which the upper case and the lower case are assembled or bonded. In addition, an opening is formed in an upper portion of the housing case in a direction toward the windshield of the vehicle, and the opening may be covered with the light-transmissive cover 113.

In such a head-up display device, an image, an image, and the like output from the display element can be projected onto the windshield of the vehicle through the translucent cover of the housing case.

However, in the process of projecting an image, an image, etc. generated from the display element on the windshield of the vehicle, the light transmitted through the light transmissive cover reflected on the housing case, specifically, the inner surface of the housing body, is transmitted to the front windshield of the vehicle. As a result of irradiation, not only the image and the image generated from the display element but also the internal structure of the housing case is projected onto the windshield of the vehicle, thereby reducing the driver's visibility of the image and the image.

In addition, at night when the amount of external light is low, the phenomenon in which the internal structure of the housing case is reflected on the windshield of the vehicle is further intensified, which may act as a factor that hinders the driving of the driver.

Thus, in one embodiment of the present invention, by forming the seedling layer 120 on the inner surface of the housing body 110 included in the housing case 100 for the head-up display of the housing body 110 It is possible to further reduce the reflectance and glossiness of the light on the inner surface. Accordingly, since the driver's visibility is effectively improved to facilitate the driver's driving, there is an advantage of implementing excellent stability.

The planting layer 120 includes the planted fibers 122 such that, for example, incident light can be reflected or refracted between the fibers 122, and thus within the planting layer 120. The incident light may scatter or cause destructive interference to reduce the reflectance and glossiness to a sufficiently low level.

For example, the seedling layer 120 may be formed on some or all of the inner surface of the housing body 110 through which light is reflected when driving the head-up display. For example, as shown in FIG. 4, the tuft layer 120 is formed over a portion on an inner surface of the housing body 110 through which light is reflected, thereby lowering the reflectance and gloss while not increasing the cost excessively. Can be.

In detail, the seedling layer 120 may be formed on an inner surface of the inner surface of the housing body 110 through which the light is reflected when the head-up display is driven toward the reflective mirror or the translucent cover 113. Can be. That is, the seedling layer 120 is the light that is incident from the inner surface of the housing body 110 to which light is incident when the head-up display driving is reflected back toward the reflective mirror or the transparent cover 113 The inner surface of the housing body 110 may be formed on the inner surface of the housing body 110, thereby preventing the phenomenon that the inner structure of the housing case 100 is reflected on the windshield of the vehicle while forming the formation area of the planting layer 120 to a small level. can do.

As shown in FIG. 1, the housing body 110 may be formed by combining the housing upper body 111 and the housing lower body 112, or not illustrated in the drawings. It may be formed as a housing body.

Light generated from the light emitting element, the display element, or both housed in the housing case 100, specifically, the housing body 110, is irradiated to the windshield of the vehicle through the translucent cover 113. In the process, it may be reflected on the inner surface of the housing body 110.

As such, by forming the planting layer 120 only on the inner surface of the housing body 110 to which light is reflected, it may not increase the cost while realizing excellent visibility, for example, the housing lower body 112 The implantation layer 120 may be formed on an inner surface of the). The area in which the tufted layer 120 is formed may be appropriately adjusted according to the purpose and use of the invention to adjust the reflectance and glossiness to a desired level.

The fiber 122 may be formed by planting the fiber 122 through the adhesive 121 applied on the inner surface of the housing body 110. For example, the seedling layer 120 may be formed by first applying an adhesive 121 on an inner surface of the housing body 110 and then seeding the fibers 122 on the applied adhesive 121. have. 2 schematically illustrates a cross-sectional view of the tufted layer 120 formed on the inner surface of the housing body 110 included in the housing case 100.

The fiber 122 can be planted by, for example, an electrostatic wool method, and the electrostatic wool method can also be called an electric wool or a flocking method, and can be carried out according to methods known in the art, and is particularly limited. It doesn't work.

In one embodiment, the average fineness of the fibers 122 may be from about 0.8 denier to about 27 denier. By having an average fineness within the range can be easily carried out a sufficient process of the fiber 122 can be adjusted to an appropriate level the amount of fibers 122 that can be planted per unit area of the tuft layer 120, Reflectance and glossiness can be achieved at a sufficiently low level.

The average diameter of the fiber 122 may be about 10㎛ to about 50㎛. By having an average diameter within the range, the light reaching the tufted layer 120 can be sufficiently reflected or refracted between the fibers 122, so that the light is scattered more effectively, or caused destructive interference, Glossiness can be reduced to a sufficiently low level to achieve good visibility and good stability.

The average length of the fiber 122 may be about 0.1mm to about 5.0mm. By forming the length within the range to reduce the reflectance and gloss of the light to the inner surface of the housing body 110 to a sufficiently low level to prevent friction, entanglement, etc. between the fibers 122 during the planting process fiber 122 ) Can be set in a more constant direction.

The weight of the fiber 122 in which the seeding layer 120 is planted per unit area may be about 20.0 g / m ² to about 80.0 g / m ² .

 The incident light within the above range can be sufficiently reflected or refracted to realize excellent visibility and at the same time maintain the weight of the housing case 100 for the head-up display at a low level to achieve excellent fuel efficiency when applied to a vehicle. Can be implemented.

The fiber 122 is selected from the group consisting of nylon fibers, rayon fibers, polyethylene fibers, polypropylene fibers, polyurethane fibers, polyester fibers, polyethylene terephthalate fibers, polyamide fibers, and combinations thereof, for example. It may include at least one.

Specifically, the fiber 122 may include the nylon fiber, and the nylon fiber generates carbon dioxide in the event of a fire, and thus may have excellent self-extinguishing property such as preventing fire spreading. have.

The adhesive 121 may be an aqueous adhesive 121, and may be a kind known in the art, and may be, for example, an aqueous acrylic adhesive 121 or an aqueous polyurethane adhesive 121, but It is not limited. In the case of the adhesive 121 using the organic solvent, it may remain in the product to cause odor, fire, or the like, and may cause air pollution when removed by evaporation to the atmosphere. In one embodiment, by using the water-based adhesive 121 as the adhesive 121 can be environmentally friendly by preventing harm to the human body and environmental pollution.

The housing case 100 is, for example, polymethyl methacrylate (PMMA, polymethylmethacrylate), polyvinyl chloride (PVC, polyvinyl chloride), polyethylene (PE, polyethylene), polypropylene (PP, polypropylene), polystyrene (PS , polystyrene), acrylonitrile butadiene styrene (ABS), polyamide (PA, polyamide; nylon), polyethylene terephtalate (PET), polycarbonate (PC, polycarbonate) and combinations thereof It may be a material including at least one selected from the group, but is not limited thereto.

3 schematically shows a structural diagram of a head-up display apparatus 200 according to another embodiment of the present invention. A head-up display (HUD) device 200 including a housing case 100 for the head-up display is provided, wherein the housing case 100 is as described above in one embodiment.

In the housing case 100, at least one selected from a group including a light emitting element 230, a display element 240, a reflective mirror 250, and a combination thereof is accommodated, and the housing case 100 An opening formed at an upper portion of the opening may be covered with a light transmissive cover 113.

For example, the light emitting device 230 may be a light emitting diode (LED), and may serve to supply a light source to the display device 240.

For example, the display element 240 may be a liquid crystal display (LCD), a liquid crystal on silicon (LCoS), or a thin film transistor liquid crystal display (TFT-). LCD), and outputs speed, road conditions, or navigation information of the vehicle projected onto the windshield 260 of the vehicle.

The reflective mirror 250 may include, for example, a concave mirror, a planar mirror, or both, but is not limited thereto. For example, as shown in FIG. 3, the light generated from the display element 240 is reflected by the plane mirror and then by the concave mirror to cover the opening formed in the upper portion of the housing case 100. By passing through and irradiating the windshield 260 of the vehicle, the vehicle's speed, road conditions, or navigation information may be displayed.

The translucent case may be formed of, for example, a transparent synthetic resin material, for example, an acrylic resin material, a polycarbonate material, or the like.

It may be, but is not limited thereto.

In another embodiment, the reflectance of light in the visible region with respect to the inner surface of the housing body 110 in which the tuft layer 120 is formed may be about 3.0% or less, and specifically about 0.001% to about 2.1%. . By having a low level of reflectance within the above range it is possible to further reduce the phenomenon that the internal configuration of the housing body 110 is reflected on the windshield 260 of the vehicle, thereby realizing excellent visibility and excellent stability.

The wavelength of the light in the visible light region may be about 360nm to about 740nm.

For example, about 60 ° glossiness of the light in the visible light region with respect to the inner surface of the housing body 110 in which the tuft layer 120 is formed may be, for example, about 0.5% or less, and specifically about 0.001% to about 0.35% Can be. The wavelength of the light is as described in the reflectance of the light.

In addition, about 85 ° glossiness of the light in the visible region with respect to the inner surface of the housing body 110 in which the tuft layer 120 is formed may be, for example, about 2.0% or less, and specifically about 0.001% to about 1.5 May be%. By having a low level of glossiness in the above range it is possible to further reduce the phenomenon that the internal configuration of the housing body 110 is reflected, thereby realizing excellent visibility and excellent stability. The wavelength of the light is as described in the reflectance of the light.

The head-up display apparatus 200 may further include, for example, a printed circuit board (PCB). For example, the head-up display apparatus 200 may be mounted to the lower portion of the housing body 110. The PCB housing may include a PCB. In addition, the head-up display apparatus 200 may further include components known in the art according to the purpose and use of the invention.

The following presents specific embodiments of the present invention. However, the embodiments described below are merely for illustrating or explaining the present invention in detail, and the present invention is not limited thereto.

Example

Example 1

The lower housing body and the upper housing body were formed of acrylonitrile butadiene styrene material.

Subsequently, in the housing body, an aqueous acrylic adhesive was applied to a part of the inner surface of the lower body on which light is reflected when driving the head-up display, and then the fiber of polyethylene material was planted by the electrostatic capping method to form a hair transplant layer. .

The planting layer was formed on a part of the inner surface of the housing body to which the light is reflected when driving the head-up display, specifically, as shown in FIG. 4, and the same reference numerals are used as in FIGS. 1 to 2. The seedling layer was represented by reference numeral 120.

The lower housing body and the upper housing body were attached to manufacture a housing case for a head-up display.

Specifically, the fiber had an average fineness of 3 denier, an average diameter of 45 μm, and an average length of 0.4 mm, and the weight of the fibers that were planted per unit area was 58.33 g / m ² .

Example 2

A housing case for a head-up display was manufactured under the same conditions and methods as in Example 1, except that a rayon material, not polyethylene, was used.

Example 3

A housing case for a head-up display was manufactured under the same conditions and methods as in Example 1 except that a fiber made of nylon W6 material, not polyethylene material, was used.

Comparative Example 1

The same conditions as in Example 1 except that a well-known anti-reflective coating which does not include a seedling layer is formed on a part of the inner surface of the lower body to which light is reflected when driving the head-up display without forming the seedling layer. The housing case for head-up display (DENSO Co., Ltd.) was manufactured by the method.

Specifically, the antireflective coating exhibited antireflection performance by forming a fine concavo-convex pattern on the surface.

Experimental Example

Reflectance and glossiness of the housing case for the head-up display according to Examples 1-3 and Comparative Example 1 were measured and described in Table 1 below.

In the housing case for a head-up display of Examples 1-3, the inner surface of the housing layer in which the planting layer was formed was measured, and in the housing case for the head-up display according to Comparative Example 1, the reflection Measured against the inner surface on which the anti-coat was formed

Assessment Methods

 (reflectivity)

Measurement Method: Reflectance and glossiness were measured and described in Table 1 below. The light of about 360 nm-740 nm wavelength was measured using the reflectometer (MINOLTA SPECTROPHOTO METER, CM-5, KONICA MINOLTA Co., Ltd.).

(Glossiness)

Measurement method: The light was measured using a reflectometer (KONICA MINOLTA, CHROMA METER, CR-400) with an incident angle of 60 ° and 85 °, respectively, for light having a wavelength of about 360 nm to 740 nm.

	reflectivity(%)	60 ° Glossiness (%)	85 ° Glossiness (%)
Example 1	1.14	0.1	0.2
Example 2	0.44	0.1	0.2
Example 3	0.41	0.1	0.2
Comparative Example 1	2.2	0.4	2.1

In the case of the housing case for the head-up display according to Examples 1 to 3, the reflectance is evaluated at a low level of 1.14% or less and glossiness of 0.2% or less, so that it can be clearly predicted to realize excellent visibility and excellent stability.

On the other hand, the housing case for the head-up display according to Comparative Example 1 has a high reflectance and glossiness, so that the internal structure of the housing case may be reflected on the windshield of the vehicle, thereby clearly inferring visibility and stability. .

<Description of the code>

100: housing case for head-up display

110: housing body

111: housing upper body

112: housing lower body

113: transparent cover

120: seedling layer

121: adhesive

122: fiber

200: head-up display device

230: light emitting element

240: display element

250: reflective mirror

260: windshield of the vehicle

Claims (20)

1. A locking layer formed on the inner surface of the housing body,

   The tufted layer is formed by the fiber is planted

   Housing case for head-up display (HUD).
2. The method of claim 1,

   The planting layer is formed on some or all of the inner surface of the housing body to which light is reflected when driving the head-up display.

   Housing case for head-up display.
3. The method of claim 2,

   The planting layer is formed on an inner surface of which light is reflected toward a reflective mirror or a translucent cover among the inner surfaces of the housing body where the light is reflected when driving the head-up display.

   Housing case for head-up display.
4. The method of claim 1,

   The planting layer is formed by planting fibers through an adhesive applied on an inner surface of the housing body.

   Housing case for head-up display.
5. The method of claim 1,

   The fibers are planted by the electrostatic cap method

   Housing case for head-up display.
6. The method of claim 1,

   The average fineness of the fibers is 0.8 denier to 27 denier

   Housing case for head-up display.
7. The method of claim 1,

   The average diameter of the fiber is 10㎛ to 50㎛

   Housing case for head-up display.
8. The method of claim 1,

   The average length of the fiber is 0.1mm to 5.0mm

   Housing case for head-up display.
9. The method of claim 1,

   The seedling layer has a weight of the fiber flocked per unit area of 20.0 g / m ² to 80.0 g / m ²

   Housing case for head-up display.
10. The method of claim 1,

    The fiber comprises at least one selected from the group consisting of nylon fiber, rayon fiber, polyethylene fiber, polypropylene fiber, polyurethane fiber, polyester fiber, polyethylene terephthalate fiber, polyamide fiber and combinations thereof

    Housing case for head-up display.
11. The method of claim 4, wherein

    The adhesive is an aqueous adhesive

    Housing case for head-up display.
12. The method of claim 1,

    The housing case is polymethyl methacrylate (PMMA, polymethylmethacrylate), polyvinyl chloride (PVC, polyvinyl chloride), polyethylene (PE, polyethylene), polypropylene (PP, polypropylene), polystyrene (PS, polystyrene), acrylonitrile At least one selected from the group consisting of butadiene styrene (ABS, acrylonitrile butadiene styrene), polyamide (PA, polyamide; nylon), polyethylene terephtalate (PET), polycarbonate (PC, polycarbonate), and combinations thereof Material

    Housing case for head-up display.
13. A head-up display (HUD) device comprising; a housing case for a head-up display according to any one of claims 1 to 12.
14. The method of claim 13,

    The reflectance of light in the visible light region with respect to the inner surface of the housing body in which the tufted layer is formed is 3.0% or less

    Head-up display device.
15. The method of claim 14,

    The wavelength of the light is 360nm to 740nm

    Head-up display device.
16. The method of claim 13,

    60 ° glossiness of the light in the visible ray region with respect to the inner surface of the housing body in which the tufted layer is formed is 0.5% or less.

    Head-up display device.
17. The method of claim 13,

    The 85 ° glossiness of the visible light region with respect to the inner surface of the housing body in which the tufted layer is formed is 2.0% or less.

    Head-up display device.
18. The method of claim 13,

    At least one selected from the group consisting of a light emitting element, a display element, a reflecting mirror, and a combination thereof is housed in the housing case,

    The opening formed in the upper portion of the housing case is covered with a transparent cover

    Head-up display device.
19. The method of claim 18,

    The light emitting device is a light emitting diode (LED)

    Head-up display device.
20. The method of claim 18,

    The display element is a liquid crystal display (LCD), a liquid crystal on silicon (LCoS), or a thin film transistor liquid crystal display (TFT-LCD)

    Head-up display device.

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