TWI541542B - Head-up display - Google Patents

Description

Head up display

This invention relates to a display, and more particularly to a heads up display.

Head-Up Display (HUD) is used in aircraft. In recent years, its application can also be found on civilian cars. The optical portion of the heads-up display includes a Projector and a Combiner. The projector projects images of car information (such as speed, fuel volume, lighting control, etc.) onto the mirror. The stack mirror can overlap the scene outside the windshield with the car information image projected by the projector, so that the driver can see the desired information image without having to look down and without refocusing the eyes.

According to the prior art of the head-up display, the windshield of the automobile can be directly used as the mirror. In addition, the stacked mirrors of the head-up display can also be fabricated independently, and the related patents include U.S. Patent Nos. 7,978,414, 8,427,751 and 5,677,701. The independently fabricated mirror can be housed in the housing of the heads up display when not in use and can be removed from the housing during use. However, the independently fabricated mirror must be removed from the casing through the opening, and the opening is liable to cause problems such as direct sunlight and dust.

The present invention refers to a heads-up display for reducing light damage and dust.

An embodiment of the present invention provides a heads-up display including a housing, a projector, a mirror, a plurality of dust covers, and a moving module. The housing has an opening. The dust cover is coupled to the housing. A projector is disposed within the housing to provide an image beam. When the dust cover closes the opening, the stack mirror is disposed in the casing; when the dust cover does not close the opening, the mirror moves to the outside of the casing through the opening and moves to the transmission path of the image beam. The moving module is disposed in the housing and coupled to the dust cover to move the dust cover relative to the housing.

Based on the above, in the above embodiment of the present invention, the dust cover can be moved by the moving module to close or not close the opening. In the above embodiment of the present invention, when the head-up display is to be used for development, the dust cover can be moved by the moving module to not close the opening, so that the mirror can be removed from the casing to the outside of the casing via the opening. In the above embodiment of the present invention, when the head-up display ends the development, the opening can be closed by moving the dust cover by the moving module to prevent the head-up display from being affected by light damage and dust.

The above described features and advantages of the invention will be apparent from the following description.

100, 100a, 100b‧‧‧ head-up display

110‧‧‧shell

110a‧‧‧Outer surface

112‧‧‧ openings

120‧‧‧Projector

122‧‧‧Display module

124‧‧‧Optical components

130‧‧‧Stack mirror

141‧‧‧First dust cover

142‧‧‧Second dust cover

150‧‧‧Mobile Module

151‧‧‧rail

151a‧‧‧ horizontal section

151b‧‧‧Sloping section

152‧‧‧ drive mechanism

152a‧‧‧ Gear Set

152b‧‧‧Rack

153‧‧‧Drive motor

154‧‧‧Active connecting rod

155‧‧‧Flexible components

160‧‧‧Mobile Module

161‧‧‧guides

162‧‧‧ drive mechanism

162a‧‧‧ Gear Set

162b‧‧‧ screw

163‧‧‧Drive motor

164‧‧‧rail

165‧‧‧Flexible body

170‧‧‧Mobile Module

171‧‧‧rail

172‧‧‧ drive mechanism

172a‧‧‧ Gear Set

172b‧‧‧ screw

173‧‧‧Drive motor

174‧‧‧Extension link

175‧‧‧Intermediate components

175a‧‧‧ Stud section

175b‧‧‧ pivoting department

176‧‧‧Flexible components

1A and 1B are cross-sectional views showing a head-up display in a use state and a non-use state, respectively, in accordance with an embodiment of the present invention.

2A and 2B are top perspective views, respectively, of the opening of the head-up display of FIG. 1A in a closed state and in an unclosed state.

3A and 3B are bottom perspective views of the opening of the head-up display of FIG. 1A in a closed state and an unclosed state, respectively.

4A and 4B are bottom perspective views of the opening of the head-up display of FIG. 1A in a closed state and an unclosed state, respectively.

5A and 5B are cross-sectional views showing a head-up display in a use state and a non-use state, respectively, according to another embodiment of the present invention.

6A and 6B are top perspective views, respectively, of the opening of the head-up display of FIG. 5A in a closed state and in an unclosed state.

7A and 7B are bottom perspective views of the opening of the head-up display of FIG. 5A in a closed state and an unclosed state, respectively.

8A and 8B are bottom perspective views of the opening of the head-up display of FIG. 5A in a closed state and an unclosed state, respectively.

9 is a longitudinal cross-sectional view showing a head-up display in use in accordance with still another embodiment of the present invention.

10A and 10B are respectively schematic cross-sectional views of the head-up display of FIG. 9 in a use state and a non-use state.

11A and 11B are bottom perspective views of the opening of the head-up display of FIG. 10A in a closed state and an unclosed state, respectively.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is for the purpose of illustration and not limitation.

Referring to FIG. 1A, the heads up display 100 of the present embodiment includes a housing 110, a projector 120, and a stacking mirror 130. The housing 110 has an opening 112. The projector 120 is disposed within the housing 110. The stacking mirror 130 can be disposed in the housing 110 and can be moved outside the housing 110 via the opening 112; wherein the overlapping mirror 130 is disposed in the housing 110 when the opening 112 is closed by a dust cover (described in detail later). When the opening 112 is not closed, the projector 120 can generate an image beam and the overlay mirror 130 can be moved to the transmission path of the image beam such that the image beam can be projected onto the overlay mirror 130 outside the housing 110. Therefore, the mirror 130 allows the scene outside the windshield to overlap with the image projected by the projector 120 on the image mirror 130 for the driver to view.

In this embodiment, the projector 120 can include a display module 122 and a plurality of optical components 124. The display module 122 is, for example, a light emitting diode module, a laser diode module, a liquid crystal display module, or the like to generate an image beam. Optical element 124 can include a mirror to change the direction of the image beam, and can also include a lens to adjust the size of the image beam.

In this embodiment, the image mirror 130 can be coupled to a driving unit (eg, a stepping motor or the like) disposed in the housing 110, and is opened from the housing 110 through the opening. 112 is moved (eg, rotated or translated) out of the housing 110 as shown in FIG. 1A. In addition, the mirror 130 can also be driven by the drive unit and moved out of the opening 112 into the housing 110, as shown in FIG. 1B. As such, the stacked mirror 130 outside the housing 110 can be moved into the housing 110 via the opening 112 without using the heads up display 100.

However, in order to prevent external light and dust from entering the housing 110 through the opening 112, the heads up display 100 may further include a first dust cover 141 and a second dust cover 142 to close the opening 112, wherein the first dust cover 141 and The second dust cover 142 is coupled to the housing 110, but the number of the dust cover is not limited thereto. In this embodiment, as shown in FIG. 1B, when the first dust cover 141 and the second dust cover 142 close the opening 112, the first dust cover 141 is closer to the opening 112, and the second dust cover 142 is farther away from the opening 112; As shown in FIG. 1A, when the opening 112 is exposed, the first dust cover 141 and the second dust cover 142 are overlapped and housed in the housing 110. In short, the first dust cover 141 and the second dust cover 142 of the embodiment can be moved to close or expose the opening 112 of the housing 110 to prevent external light and dust or for the driver to view the mirror. 130. How to move the first dust cover 141 and the second dust cover 142 will be described in detail below.

The housing 110 of Figures 2A-2B, 3A-3B, and 4A-4B is only illustrated with the top of the housing 110 to simplify the illustration for ease of illustration. Referring to FIG. 1A , FIG. 2A , FIG. 3A and FIG. 4A , the heads up display 100 further includes a moving module 150 . The mobile module 150 is disposed in the housing 110 and coupled to the first dust cover 141 and the second dust cover 142 to move the first dust cover 141 and the second dust cover 142 to make the first dust cover 141 and the second dust cover 142 moves relative to the housing 110 such that the first dust cover 141 and The second dust cover 142 does not close the opening 112 (as shown in FIGS. 1A, 2A, 3A, and 4A) or close the opening 112 (as shown in FIG. 1B, FIG. 2B, FIG. 3B, and FIG. 4B).

In this embodiment, the mobile module 150 includes two guide rails 151 (shown in FIGS. 3A and 4A, respectively), a drive mechanism 152, and a drive motor 153. The guide rail 151 is disposed in the housing 110 and coupled to both sides of the first dust cover 141. The driving mechanism 152 is disposed in the housing 110 and coupled to the first dust cover 141. The drive motor 153 is disposed within the housing 110 and coupled to the drive mechanism 152. In addition, the mobile module 150 can further include two elastic members 155 (eg, coil springs). The elastic member 155 connects the second dust cover 142 and the housing 110 such that the second dust cover 142 is movably coupled to the housing 110. As such, the elastic member 155 helps to stabilize the coupling relationship between the second dust cover 142 and the housing 110 to stabilize the position of the second dust cover 142 relative to the housing 110.

In the embodiment, the first dust cover 141 and the second dust cover 142 are movably connected to each other. As shown in FIGS. 1A, 2A, 3A, and 4A, the drive motor 153 can drive the drive mechanism 152 to move the first dust cover 141 along the guide rail 151 with respect to the housing 110 to move the second dust cover 142 in a joint manner, so that The first dust cover 141 and the second dust cover 142 move relative to the housing 110 in a direction away from the elastic member 155 to further close the opening 112 (as shown in FIGS. 1B, 2B, 3B, and 4B).

Conversely, as shown in FIG. 1B, FIG. 2B, FIG. 3B and FIG. 4B, if the opening 112 is not closed, the driving motor 153 can drive the driving mechanism 152 to move the first dust cover 141 along the guide rail 151 with respect to the housing 110. The second dust cover 142 is moved in a joint manner so that the first dust cover 141 and the second dust cover 142 move relative to the housing 110 toward the elastic member 155 to further move to one side of the opening 112. Overlapping (as shown in Figures 1A, 2A, 3A, and 4A).

In the present embodiment, as shown in FIGS. 2A, 3A and 4A, the drive mechanism 152 may include a gear set 152a (gear chain) and a rack 152b (rack). The gear set 152a is coupled to the drive motor 153. The rack 152b is slidably disposed on the housing 110 and coupled to the gear set 152a and the first dust cover 141. The rotation of the drive motor 153 can be converted to translation via the gear set 152a and the rack 152b to drive the first dust cover 141 to move along the guide rail 151 relative to the housing 110.

In order to make the first dust cover 141 and the second dust cover 142 fill the opening 112 and be flush with the outer surface 110a of the housing 110, as shown in FIG. 3A and FIG. 4A, the mobile module 150 may further include two movable links 154. . The two ends of the movable links 154 are movably connected to the first dust cover 141 and the second dust cover 142 respectively, so that the adjacent first dust cover 141 and the second dust cover 142 are movable to each other via the movable link 154. connection. Each of the guide rails 151 includes a horizontal section 151a and an inclined section 151b that is continuous from the horizontal section 151a. Therefore, the drive motor 153 can drive the drive mechanism 152 to move the first dust cover 141 along the horizontal section 151a and the inclined section 151b of the guide rail 151 with respect to the housing 110, so that the first dust cover 141 can be along the inclined section 151b relative to the housing. The 110 is moved, and the first dust cover 141 can move the second dust cover 142 in conjunction with the movable link 154. Finally, the first dust cover 141 and the second dust cover 142 will fill the opening 112, and the first dust cover 141 may be flush with the adjacent second dust cover 142, as shown in FIG. 1B, FIG. 2B, FIG. 3B and FIG. Shown in 4B.

In the embodiment illustrated in FIG. 1A, two dust caps are moved and unfolded to close the opening of the housing. In another embodiment illustrated in FIG. 6A, The two dust covers are moved and unfolded to close the opening of the casing, as described in detail below.

Similarly, the housing 110 of FIGS. 6A-6B, 7A-7B, and 8A-8B is only illustrated with the top of the housing 110 to simplify the drawing for ease of illustration. Referring to FIG. 5A, FIG. 6A, FIG. 7A and FIG. 8A, the mobile module 160 of the head-up display 100a is disposed in the housing 110 and coupled to the first dust cover 141 and the second dust cover 142 to move the first dust cover 141. And the second dust cover 142 moves the first dust cover 141 and the second dust cover 142 relative to the housing 110 such that the first dust cover 141 and the second dust cover 142 do not close the opening 112 (as shown in FIG. 5A, FIG. 6A, 7A and 8A) or a closed opening 112 (as shown in 5B, 6B, 7B, and 8B).

In this embodiment, the mobile module 160 includes a guiding rod 161, a driving mechanism 162, a driving motor 163 and two guiding rails 164, wherein the guiding rail 164 includes a horizontal section (depicted in the future) and an inclined section connected from the horizontal section (future drawing ). For the horizontal section and the inclined section of the guide rail 164 in this embodiment, reference may be made to the description of the guide rail 151 in the embodiment of FIGS. 3A-4B and 4A-4B, and the description thereof will not be repeated here. The guide rod 161 is disposed in the housing 110 and coupled to the first dust cover 141. The driving mechanism 162 is disposed in the housing 110 and coupled to the first dust cover 141. The drive motor 163 is disposed within the housing 110 and coupled to the drive mechanism 162. The first dust cover 141 and the second dust cover 142 are movably connected to each other, and the guide rail 164 is disposed in the housing 110 and coupled to the second dust cover 142. The driving motor 163 drives the driving mechanism 162 to move the first dust cover 141 and the second dust cover 142 along the guide rod 161 and the guide rail 164 with respect to the housing 110, so that the first dust cover 141 and the second dust cover 142 face away from the guide rail 164. The direction of the movement moves relative to the housing 110, so that the first dust cover 141 and the second dust cover 142 close the opening 112 (as shown in FIG. 5B, FIG. 6B, FIG. 7B). And Figure 8B).

Conversely, as shown in FIGS. 5B, 6B, 7B, and 8B, if the opening 112 is not closed, the drive motor 163 can drive the drive mechanism 162 to move the first dust cover 141 along the guide rod 161 with respect to the housing 110. Moving the second dust cover 142 along the guide rails 164 in a detached manner, so that the first dust cover 141 and the second dust cover 142 move toward the side of the opening 112 with respect to the housing 110 toward the direction of the guide rail 164 and are inclined to each other ( 5A, 6A, 7A and 8A).

In the present embodiment, as shown in FIGS. 6A, 7A and 8A, the drive mechanism 162 may include a gear set 162a and a screw rod 162b (screw rod). The gear set 162a is coupled to the drive motor 163. The screw 162b is pivotally disposed on the housing 110 and coupled to the gear set 162a and the first dust cover 141. The rotation of the drive motor 163 can be converted to translation via the gear set 162a and the screw 162b to drive the first dust cover 141 to move along the guide rod 161 relative to the housing 110.

In order to fill the opening 112 with the first dust cover 141 and the second dust cover 142 to be flush with the outer surface 110a of the housing 110, as shown in FIGS. 6B, 7A-7B and 8A-8B, the mobile module 160 further includes a flexible Sex 165. The flexible body 165 connects the adjacent first dust cover 141 and the second dust cover 142 such that the adjacent first dust cover 141 and the second dust cover 142 are flexibly coupled to each other via the flexible body 165.

In another embodiment, illustrated in Figure 6A, two dust caps that are moved and unfolded are used to close the opening of the housing. In another embodiment illustrated in Figure 9, the two dust covers are moved in an independent manner to close the opening of the housing, as described in more detail below.

Similarly, the housing 110 in FIGS. 11A-11B is only the top of the housing 110. The illustration is simplified for ease of illustration. Referring to FIG. 10A and FIG. 11A , the mobile module 170 of the head-up display 100b is disposed in the housing 110 and coupled to the first dust cover 141 and the second dust cover 142 to move the first dust cover 141 and the second dust cover 142 . The first dust cover 141 and the second dust cover 142 are moved relative to the housing 110 to move the first dust cover 141 and the second dust cover 142 such that the first dust cover 141 and the second dust cover 142 do not close the opening 112 (as shown in the figure). 10A and FIG. 11A) or closed opening 112 (as shown in FIGS. 10B and 11B).

In the present embodiment, the mobile module 170 includes a plurality of guide rails 171, a plurality of drive mechanisms 172, and a plurality of drive motors 173. The guide rail 171 is disposed in the housing 110 and coupled to the first dust cover 141 and the second dust cover 142 respectively. The driving mechanism 172 is disposed in the housing 110 and coupled to the corresponding first dust cover 141 and the second dust cover 142. The driving motor 173 is disposed in the housing 110 and coupled to the corresponding driving mechanism 172 to drive the driving mechanism 172 to move the first dust cover 141 and the second dust cover 142 along the corresponding rail 171 with respect to the housing 110. A dust cover 141 and a second dust cover 142 move closer to each other than the housing 110, and the first dust cover 141 and the second dust cover 142 close the opening 112 (as shown in FIGS. 10B and 11B).

Conversely, as shown in FIG. 10B and FIG. 11B, if the opening 112 is not closed, the driving motor 173 can drive the driving mechanism 172 to move the first dust cover 141 and the second dust cover along the corresponding rail 171 with respect to the housing 110. 142, the first dust cover 141 and the second dust cover 142 are respectively moved away from the mouth 112 (as shown in FIGS. 10A and 11A).

In order to fill the opening 112 with the first dust cover 141 and the second dust cover 142, it is flush with the outer surface 110a of the housing 110, as shown in FIGS. 11A and 11B. The module 170 further includes a plurality of extension links 174. The two ends of each extension link 174 are respectively pivotally connected to the corresponding first dust cover 141 or the second dust cover 142 and are slidably disposed to the corresponding guide rails 171, and each drive The motor 173 can drive the corresponding driving mechanism 172 to move the corresponding first dust cover 141 or the second dust cover 142 such that the first dust cover 141 and the second dust cover 142 fill the opening 112.

In the present embodiment, as shown in FIG. 11A, each of the drive mechanisms 172 may include a gear set 172a and a screw 172b. The gear set 172a is coupled to the drive motor 173. The screw 172b is pivotally disposed on the housing 110 and coupled to the gear set 172a and the first dust cover 141 or the second dust cover 142. The rotation of the drive motor 173 is converted into a translation via the gear set 172a and the screw 172b to drive the first dust cover 141 to move along the corresponding guide rail 171 with respect to the housing 110. In addition, the mobile module 170 includes a plurality of intermediate members 175 and a plurality of elastic members 176. Each of the intermediate members 175 has a stud portion 175a and a pivot portion 175b. The stud portion 175a is coupled to the corresponding screw 172b, and the pivot portion 175b is pivoted to the corresponding first dust cover 141 or the second dust cover 142. Each of the elastic members 176 (for example, a torsion spring) is disposed between the corresponding intermediate member 175 and the corresponding first dust cover 141 or the second dust cover 142, and is capable of providing elastic force to the corresponding first dustproof portion with respect to the corresponding intermediate member 175. The cover 141 or the second dust cover 142 is configured to ensure that the first dust cover 141 and the second dust cover 142 close the opening 112, and the first dust cover 141 and the second dust cover 142 can fill the opening 112 and the housing 110. The outer surface 110a is flush.

In summary, in the above embodiment of the present invention, the dust cover can be moved by the moving module to close or not close the opening. In the embodiment of the present invention, when the head-up display is to be used for development, the dust cover can be moved by the moving module without being closed. The port allows the mirror to be removed from the housing through the opening to the outside of the housing to provide a display. In the embodiment of the present invention, when the head-up display ends the development, the opening can be closed by moving the dust cover by the moving module to prevent the head-up display from being affected by light damage and dust.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. In addition, any of the objects or advantages or features of the present invention are not required to be achieved by any embodiment or application of the invention. In addition, the abstract sections and headings are only used to assist in the search of patent documents and are not intended to limit the scope of the invention. In addition, the terms "first", "second" and the like mentioned in the specification or the scope of the claims are only used to name the elements or distinguish different embodiments or ranges, and are not intended to limit the number of elements. Upper or lower limit.

100‧‧‧Headed display

110‧‧‧shell

110a‧‧‧Outer surface

112‧‧‧ openings

120‧‧‧Projector

122‧‧‧Display module

124‧‧‧Optical components

130‧‧‧Stack mirror

141‧‧‧First dust cover

142‧‧‧Second dust cover

Claims (15)

A head-up display comprising: a housing having an opening; a plurality of dust caps coupled to the housing; a projector disposed within the housing to provide an image beam; and a stack of mirrors to protect the dust When the cover closes the opening, the stacking mirror is disposed in the housing, and when the dustproof cover does not close the opening, the overlapping mirror moves outside the housing through the opening and moves to the transmission path of the image beam; And a mobile module disposed in the housing and coupled to the dust cover to move the dust cover relative to the housing, wherein the moving module comprises: at least one rail disposed in the housing and coupled Connect at least one of the dustproof covers; at least one driving mechanism disposed in the housing and coupled to at least one of the dustproof covers; and at least one driving motor disposed in the housing and coupled to the at least one driving a mechanism for driving the at least one drive mechanism to move the dust caps along the at least one rail relative to the housing. The head-up display of claim 1, wherein the at least one driving mechanism comprises: a gear set coupled to the at least one driving motor; and a rack that is slidably disposed on the housing and coupled to the gear And at least one of the dust caps, wherein the at least one drive motor drives the through the gear set and the rack At least one of the dust caps moves along the at least one rail relative to the housing. The head-up display of claim 1, wherein the dust caps are movably connected to each other, at least one of the dust caps is coupled to the at least one rail, and the at least one driving motor drives the at least one driver The mechanism moves at least one of the dustproof covers along the at least one guide rail relative to the housing to move the other dustproof covers or other dustproof covers in a joint manner, so that the dustproof covers close or do not close the openings. The head-up display of claim 1, wherein the dust caps are movably connected to each other, and at least one of the dust caps is coupled to the at least one driving mechanism and coupled to the at least one rail, the at least one The rail includes a horizontal section and an inclined section connected from the horizontal section, and the at least one driving motor drives the at least one driving mechanism to move the horizontal section and the inclined section along the at least one rail relative to the housing At least one of the dustproof covers moves the other dustproof cover or other dustproof cover in conjunction. The head-up display of claim 1, wherein the moving module further comprises: at least one movable connecting rod, the two ends of which are movably connected to the adjacent dustproof covers, so that the adjacent dustproof covers are respectively The two are movably connected to each other via the movable link. The head-up display of claim 1, wherein the moving module further comprises: at least one elastic component connecting at least one of the dustproof covers and the casing, so that at least one of the dustproof covers is active Ground connected to the housing. The head-up display of claim 1, wherein the moving module further comprises: a guiding rod disposed in the housing and coupled to at least one other of the dustproof covers, wherein the at least one driving motor drives the The at least one driving mechanism moves the dustproof cover along the guiding rod and the at least one guiding rail relative to the housing. The head-up display of claim 7, wherein the at least one driving mechanism comprises: a gear set coupled to the at least one driving motor; and a screw pivotally mounted to the housing and coupled to the gear set And at least one of the dust caps, wherein the at least one drive motor drives the dust cover through the gear set and the screw drives at least one of the dust covers to move along the guide rod relative to the housing. The head-up display of claim 7, wherein the dust caps are movably connected to each other, at least one of the dust caps is coupled to the guide bar, and the at least one drive motor drives the at least one drive mechanism Moving at least one of the dustproof covers along the guiding rod relative to the housing to jointly move the other dustproof cover or other dustproof cover, so that the dustproof covers close or do not close the opening. The head-up display of claim 7, wherein the dust caps are movably connected to each other, at least one of the dust caps is coupled to the at least one driving mechanism, and the other dust caps or other dust caps are coupled. Connecting to the at least one rail, the at least one rail includes an inclined section and a horizontal section connected from the inclined section, and the at least one driving motor drives the at least one driving mechanism along the guiding rod and the housing relative to the housing The inclined section of at least one of the guide rails and the horizontal section move at least the dustproof cover First, the other dust cover or other dust cover is moved in conjunction. The head-up display of claim 7, wherein the moving module further comprises: a flexible body connecting the adjacent dustproof covers, so that the adjacent dustproof covers pass through the flexible body They are flexibly connected to each other. The head-up display of claim 1, wherein the number of the at least one guide rail is plural, and is disposed in the housing and coupled to the dustproof covers respectively; the number of the at least one driving mechanism is multiple, respectively And the plurality of at least one driving motor is coupled to the driving mechanism to drive the driving mechanisms to move the dust cover along the rails relative to the housing . The head-up display of claim 12, wherein each of the driving mechanisms comprises: a gear set coupled to the corresponding driving motor; and a screw pivoted to the housing and coupled to the corresponding gear And the corresponding dustproof cover, wherein each of the driving motors moves through the corresponding gear set and the corresponding dustproof cover corresponding to the screw drive relative to the housing along the corresponding guide rail. The head-up display of claim 12, wherein the moving module further comprises: a plurality of extending links, wherein two ends of each of the extending links are respectively pivoted to the corresponding dust cover and slidably set to corresponding The guide rail, and each of the drive motors drives the corresponding drive The mechanism moves the corresponding dust cover so that the dust covers fill the opening. The head-up display of claim 12, wherein the moving module further comprises: a plurality of intermediate components, each of the intermediate components having a stud portion and a pivoting portion, the stud portion being coupled to the corresponding one a screw, and the pivoting portion is pivoted to the corresponding dust cover; and a plurality of elastic members, each of the elastic members being disposed between the corresponding intermediate member and the corresponding dust cover, and corresponding to the middle portion The component provides spring force to the corresponding dust cover.