Patent ID: 12222516

DETAILED DESCRIPTIONS

FIG.1is a perspective view illustrating a configuration of a one-mirror type head-up display according to one embodiment of the present disclosure.

Referring toFIG.1, the one-mirror type head-up display100may include a lower case110and a picture generating unit120. In this case, the picture generating unit120may be coupled to a sidewall of the lower case110.

FIG.2Ais a view illustrating a state in which the picture generating unit is coupled to the one-mirror type head-up display according to one embodiment of the present disclosure when the one-mirror type head-up display is disposed on the left side of a vehicle.

FIG.2Bis a view illustrating a state in which the picture generating unit is coupled to the one-mirror type head-up display according to one embodiment of the present disclosure when the one-mirror type head-up display is disposed on the right side of the vehicle.

Referring toFIG.2AandFIG.2B, the one-mirror type head-up display100may be disposed on the left or right side of the vehicle. In this case, the left side of the vehicle refers to a driver's seat, and the right side refers to a passenger's seat. Accordingly, depending on whether the one-mirror type head-up display100is disposed on the left or right side of the vehicle, the position at which the picture generating unit120is coupled to the lower case110is different. The picture generating unit120according to one embodiment of the present disclosure is formed in such a way that it can be used even when the one-mirror type head-up display100is disposed on the left or right side of the vehicle.

FIG.3is an exploded perspective view illustrating a configuration of the one-mirror type head-up display according to one embodiment of the present disclosure.

FIG.4is an exploded perspective view illustrating the picture generating unit ofFIG.3in detail.

Referring toFIGS.3and4, the one-mirror type head-up display100includes all or some of a cover lens assembly310, an upper case320, a screen330, an aspherical mirror340, a main printed circuit board (PCB)350, a lower case110, and a picture generating unit120.

The cover lens assembly310is coupled to a front side of the upper case320.

The screen330may be coupled to an upper portion of the aspherical mirror340. The screen330may be coupled to the lower case110to restrict linear motion of the aspherical mirror340in at least one direction.

The aspherical mirror340may include spherical mounts (not shown) at both ends to be coupled to the lower case110so as to be rotatable. An image including driving information of the vehicle generated by the picture generating unit120may be reflected by the aspherical mirror340and displayed on a windshield (not shown).

The picture generating unit120includes all or some of a liquid crystal display (LCD)410, a diffuser420, an LCD cover430, and a back light unit440.

The LCD410generates driving information of the vehicle.

The diffuser420is disposed between the LCD410and the LCD cover430. The diffuser420disperses light emitted from the back light unit440so that the light is evenly incident on a rear side of the LCD410.

The LCD cover430is disposed between the LCD410and the backlight unit440. The LCD cover430may be snap-fitted to the LCD410using a mating surface (not shown) that is inclined by a predetermined angle.

The backlight unit440includes a funnel reflector450, an LED PCB460, a thermal grease470, and a heat sink480.

The backlight unit440irradiates light generated from a plurality of light sources disposed on the LED PCB460to the LCD410via the LCD cover430.

The funnel reflector450may be disposed on the front side of the LED PCB460where a light source is disposed. The funnel reflector450may be disposed on the rear side of the LCD410and the diffuser420. The funnel reflector450guides a traveling path of light so that light emitted from the light source is uniformly incident on the diffuser420and the LCD410. The interior of the funnel reflector450may form a cup-shaped optical surface to guide the traveling path of light emitted from the light source.

The LED PCB460includes a plurality of light sources (not shown). In this case, the light source is a member that emits light. The light source may be a light emitting diode (LED). The plurality of light sources may be disposed in a predetermined pattern on the LED PCB460.

The thermal grease470is disposed at the rear side of LED PCB460. The thermal grease470may be a heat-resistant adhesive material.

The heat sink480dissipates heat generated inside the backlight unit440. The heat sink480is coupled to the lower case110with bolts and nuts.

FIG.5is a perspective view illustrating a configuration of a two-mirror type head-up display according to another embodiment of the present disclosure.

FIG.6Ais a view illustrating a state in which the picture generating unit is coupled to the two-mirror type head-up display according to another embodiment of the present disclosure when the two-mirror type head-up display is disposed on the left side of a vehicle.

FIG.6Bis a view illustrating a state in which the picture generating unit is coupled to the two-mirror type head-up display according to another embodiment of the present disclosure when the two-mirror type head-up display is disposed on the right side of the vehicle.

Referring toFIG.5,FIG.6AandFIG.6B, the two-mirror type head-up display500includes a lower case510and a picture generating unit120. In this case, the picture generating unit120may be coupled to a lower surface of the lower case510. The two-mirror type head-up display500may also be disposed on the left or right side of the vehicle, similarly to the one-mirror type head-up display100. Thus, depending on whether the two-mirror type head-up display500is disposed on the left or right side of the vehicle, the position at which the picture generating unit120is coupled to the lower case510is different.

FIG.7is an exploded perspective view illustrating a configuration of the two-mirror type head-up display according to another embodiment of the present disclosure.

FIG.8is an exploded perspective view illustrating the picture generating unit ofFIG.7in detail.

In the following description of the configuration of the two-mirror type head-up display500, redundant description of the contents overlapping with the configuration of the one-mirror type head-up display100described above will be omitted and the differences will be described.

Referring toFIGS.7and8, the two-mirror type head-up display500includes all or some of a cover lens assembly710, an upper case720, a screen730, an aspherical mirror740, an main PCB750, a lower case510, and the picture generating unit120.

The two-mirror type head-up display500further includes a folding mirror731. The folding mirror731is disposed on a light path formed inside the screen730. Thus, light generated by the LED PCB460is reflected by the folding mirror731via the LCD410.

The picture generating unit120, according to another embodiment of the present disclosure, further includes an LCD seating portion810on which the LCD410is mounted. The LCD seating portion810may be formed at one side of the lower case510. Thus, the LCD410and the diffuser420may be snap-fitted to the LCD seating portion810formed in the lower case510. Additionally, the backlight unit440may be coupled to the rear side of the LCD seating portion810. In this case, the front side and the rear side are described relative to the path along which light generated by the LED PCB460is irradiated toward the LCD410.

According to one embodiment and another embodiment of the present disclosure, the backlight unit440may be coupled to both the one-mirror type head-up display100and the two-mirror type head-up display500.

FIG.9Ais a cross-sectional view taken along line A-A ofFIG.1, which is viewed from the left side.

FIG.9Bis a cross-sectional view taken along line B-B ofFIG.5, which is viewed from the left side.

Referring toFIGS.9A and9B, the one-mirror type head-up display100has a single mirror disposed therein. In this case, the single mirror may be an aspherical mirror340. Accordingly, in the one-mirror type head-up display100, the picture generating unit120is preferably coupled to a side surface of the lower case110. The LCD410, which is disposed at the same angle as an upper end surface of the funnel reflector450, is tilted by a predetermined angle to irradiate display image onto the aspherical mirror340.

The two-mirror type head-up display500has two mirrors disposed therein. The two mirrors may be the folding mirror731and the aspherical mirror740. In the two-mirror type head-up display500, the picture generating unit120is coupled to the lower surface of the lower case510. The LCD410, which is disposed at the same angle as the upper end surface of the funnel reflector450, is tilted by a predetermined angle to irradiate display image onto the folding mirror731. The display image may be reflected by the folding mirror731to be irradiated toward the aspherical mirror740. Accordingly, the angle of the LCD410coupled to the one-mirror type head-up display100and the angle of the LCD410coupled to the two-mirror type head-up display500are different. The angle difference between the LCD410coupled to the one-mirror type head-up display100and the LCD410coupled to the two-mirror type head-up display500may be, for example, 180°. Accordingly, when the funnel reflector450is coupled to the heat sink480of the one-mirror type head-up display100in a forward orientation, the funnel reflector450may be rotated, e.g., 180° to be coupled to the heat sink480of the two-mirror type head-up display500. By coupling the funnel reflector450to the picture generating unit120in the forward or reverse orientation, the backlight unit440may be coupled to both the one-mirror type head-up display100and the two-mirror type head-up display500.

FIG.10is a plan view illustrating the picture generating unit according to one embodiment of the present disclosure.

Referring toFIG.10, the heat sink480is coupled to an lower end of the funnel reflector450. The heat sink480includes a flange portion1100and an accommodation portion1200.

The flange portion1100has a polygonal cross-sectional shape. For example, the flange portion1100may have eight corners. Additionally, the flange portion1100has a symmetrical shape structure. For example, the flange portion1100may have a symmetrical shape in which the left and right sides are identical with respect to an imaginary center line perpendicular to a longitudinal direction.

The accommodation portion1200forms an accommodation space that accommodates the funnel reflector450and the LED PCB460. The accommodation portion1200may accommodate all or some of the LED PCB460, the funnel reflector450, and the LCD cover430.

The flange portion1100may include a first locator1110, a second locator1111, and a third locator1112. The heat sink480is coupled to a sidewall or a lower surface of the lower case110or510. Thus, the first locator1110, the second locator1111, and the third locator1112may be coupled to blocks (not shown) formed in the lower case110and510to determine the position of the picture generating unit120and the backlight unit440. In this case, the first locator1110and the second locator1111may be holes.

Unlike a workpiece, which is typically positioned using six independent blocks, for example, locators, a sheet panel may be positioned using a combination of blocks, pins and the like. The first locator1110, the second locator1111, and the third locator1112form a 4-2-1 positioning. The second locator1111restricts movement in two orthogonal directions, for example, four directions, and the third locator1112restricts movement in one orthogonal direction, for example, two directions. Thus, according to one embodiment and another embodiment of the present disclosure, in the one-mirror type head-up display100and the two-mirror type head-up display500, the picture generating unit120can be coupled to the head-up display based on a 4-2-1 positioning method using the configuration of the first locator1110, the second locator1111, and the third locator1112when determining the position of the picture generating unit120and the backlight unit440.

The number of the first locators1110may be at least three. The first locators1110are formed at a center, a left side, and a right side of the flange portion1100. In this case, at least one of the first locators1110is disposed in the center of the flange1100, and two first locators are disposed on the flange1100symmetrically with respect to the at least one first locator disposed at the center. The first locator1100forms a face that protrudes in the z-axis direction by a predetermined height. An area of the protruding first locator1100may be an area that can generate sufficient coupling force when the picture generating unit120and the backlight unit440are coupled to the lower case110or510. A hole is formed in a central portion of the first locator1110. The hole formed in the first locator1110is coupled to a boss formed in the lower case110or510. Accordingly, the first locator1110may restrict linear motion of the picture generating unit120in at least one direction. For example, the first locator1110may restrict linear motion of the picture generating unit120in the z-axis.

The LCD cover430may include at least one second locator1111and at least one third locator1112. The one-mirror type head-up display100according to one embodiment of the present disclosure, when coupled with the picture generating unit120, may be coupled with the first locator1100formed on the heat sink480and simultaneously coupled with the second locator1111and the third locator1112formed on the LCD cover430.

The position of the picture generating unit120can be determined using the first locator1100, the second locator1111, and the third locator1112. The second locator1111may restrict the linear motion of the picture generating unit120in at least four directions. For example, in the picture generating unit120coupled to the one-mirror type head-up display100according to one embodiment of the present disclosure, the linear motion of the picture generating unit120in the x-axis, −x-axis, y-axis, and −y-axis directions can be restricted by the second locator1111formed on the LCD cover430. The third locator1112formed on the LCD cover430restricts the linear motion of the picture generating unit120in at least two directions. For example, the third locator1112can restrict the linear motion of the picture generating unit120in the y-axis and −y-axis directions.

In addition, the position of the picture generating unit120coupled to the one-mirror type head-up display100according to one embodiment of the present disclosure may be determined using the second locator1111and the third locator1112formed on the flange portion1100. When the position of the picture generating unit120is determined using the second locator1111and the third locator1112formed on the heat sink480, the second locator1111formed on the heat sink480restricts the linear motion of the picture generating unit120corresponding to imaginary straight lines L1and L2. Further, the third locator1112formed on the heat sink480restricts the linear motion of the picture generating unit120corresponding to an imaginary straight line L3.

When the LCD seating portion810is formed in the lower case510based on the above descriptions, the backlight unit440is coupled to the rear side of the LCD seating portion810. The heat sink480of the backlight unit440may be coupled to the lower case510. In this case, the position of the backlight unit440is determined using the first locator1110, the third locator1111, and the second locator1112formed on the heat sink480, and the linear motion of the backlight unit440in six directions, for example, may be restricted.

The backlight unit440according to another embodiment of the present disclosure may vary the angle of the picture generating unit120by changing the positions of the second locator1111and the third locator1112. Accordingly, the angle of the picture generating unit120can be varied to be used in various vehicle types.

FIG.12is a view illustrating an erroneous assembly prevention structure for preventing misassembly of a funnel reflector that can be coupled to both the one-mirror type head-up display and the two-mirror type head-up display.

Referring toFIG.12, when coupled to the one-mirror type head-up display100or the two-mirror type head-up display500, the funnel reflector450is coupled in a forward or reverse orientation depending on the angle of the LCD410. Accordingly, to prevent misassembly in the assembly process of the picture generating unit120and the backlight unit440, the funnel reflector450may include an erroneous assembly prevention hole1300. The erroneous assembly prevention hole1300may be formed in one corner of a lower surface of the funnel reflector450.

For example, when the funnel reflector450and the LED PCB460are coupled to the one-mirror type head-up display100, the funnel reflector450is coupled to the LED PCB460in the forward orientation. Accordingly, the funnel reflector450is coupled with a forward boss1410on a forward jig1400. The position of the forward boss1410corresponds to the position of the erroneous assembly prevention hole1300when the funnel reflector450is coupled in the forward orientation.

When the funnel reflector450and the LED PCB750are coupled to the two-mirror type head-up display500, the funnel reflector450is coupled in the reverse orientation, that is, in a state in which the funnel reflector450is rotated 180° with respect to the forward orientation described above. Accordingly, the funnel reflector450is coupled with a reverse boss1510on a reverse jig1500. In this case, the reverse boss1510is formed at a corner on the reverse jig1500diagonally opposite to the forward boss1410. Thus, the erroneous assembly prevention hole1300is coupled to the reverse boss1510, and the funnel reflector450is coupled in the 180° rotated state. In this case, the LED PCB750includes two holes (not shown) corresponding to the positions of the forward boss1410and the reverse boss1510.

Accordingly, the misassembly of the funnel reflector450can be prevented by utilizing the erroneous assembly prevention hole1300that is coupled to the forward boss1410or the reverse boss1510depending on the one-mirror type head-up display100and the two-mirror type head-up display500.