Patent Publication Number: US-2023158943-A1

Title: Apparatus for Side Projection Lamp of a Mobility Device

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     The present application claims priority to Korean Patent Application No. 10-2021-0163662, filed Nov. 24, 2021, the entire contents of which is incorporated herein for all purposes by this reference. 
     TECHNICAL FIELD 
     The present disclosure relates to an apparatus for a side projection lamp of a mobility device, the apparatus securing rear lateral sight from opposite lateral sides of the mobility device and illuminating light of a specific image to a road surface or an outer surface of the mobility device. 
     BACKGROUND 
     In general, in a mobility device, side mirrors are respectively mounted so that a driver may easily determine road conditions on a left, right, or rear side of a driving direction when driving. 
     The side mirror is installed on each side of the mobility device, thereby allowing the driver to recognize, through a mirror attached to a body of the side mirror, a driving direction or speed of other mobility devices driving to approach from the rear. Resulting from this, while driving the mobility device, the driver may safely change lanes or maintain a safe distance between the front and rear vehicles, thereby allowing the driving of the mobility device to be safely performed without interfering with operations of other mobility devices driving to approach from the rear. 
     As such, each side mirror is generally fixed to either one of the left and right body surfaces of the top of the headlamp or to the front side of the outer side of the door so that the driver may observe the traffic situation at the rear or the side. 
     On the other hand, in the case of the side mirror provided on a passenger seat side, the reflection angle of the mirror that the driver may see is very small because it is far from the driver&#39;s seat. Accordingly, in order to secure the driver&#39;s viewing angle, a mirror whose reflection angle is slightly convex from opposite sides of the mirror to the center is installed, but it has a critical defect that makes it almost impossible to secure a field of view in a blind spot. 
     The foregoing is intended merely to aid in the understanding of the background of the present disclosure, and is not to be regarded as to mean that the present disclosure falls within the purview of the related art that is already known to those skilled in the art. 
     SUMMARY 
     Accordingly, the present disclosure has been made keeping in mind the above problems occurring in the related art, and the present disclosure is intended to provide an apparatus for a side projection lamp of a mobility device, wherein the apparatus is capable of securing rear lateral sight from opposite lateral sides of the mobility device and of illuminating light of a specific image to a road surface or an outer surface of the mobility device, thereby being allowed to communicate with a driver. 
     In order to achieve the above objective, according to one aspect of the present disclosure, there may be provided an apparatus for a side projection lamp of a mobility device, the apparatus including: a side part installed on a vehicle body or a door, provided with a rear recognizer so as to secure rear lateral sight, and formed with a light movement space at the inside thereof; an image transmitter installed on the vehicle body or the door and illuminating light for forming at least one image into the light movement space of the side part; and a reflection unit installed in the light movement space of the side part and projecting the image on a road surface or an outer surface of the mobility device by reflecting the light illuminated from the image transmitter. 
     The rear recognizer may include a camera configured to obtain a photograph of an outside of a rear or lateral side of the mobility device and allow the obtained photograph to be output indoors. 
     The image transmitter may include: a light source configured to illuminate the light; a variable mirror configured to reflect the light illuminated from the light source to form the image; and a lens provided to make the light penetrate through a movement path of the light. 
     The apparatus may further include a magnification lens installed in the light movement space of the side part to allow the light reflected through the reflection unit to be incident thereon and configured to allow a size of the image according to the incident light to be adjusted. 
     The reflection unit may be configured to allow a projection position of the light illuminated from the image transmitter to be adjusted by being installed to be able to rotate in the light movement space of the side part. 
     The reflection unit may include: a mirror part installed to be able to rotate in the light movement space and configured to reflect the light illuminated from the image transmitter; and a rotation driving part configured to adjust a rotation position of the mirror part by being connected to the mirror part. 
     The mirror part may be installed to be able to rotate in the light movement space by the medium of a hinge part, and the rotation driving part may be configured to allow the mirror part to rotate together with the hinge part by being connected to the hinge part by a friction connection method or a gear connection method. 
     A guide slot may be extended in the light movement space of the side part, and the mirror part may have one end connected to the rotation driving part by the medium of a link unit composed of a plurality of links and an opposite end connected, to be movable, to the guide slot. 
     The rotation driving part may be formed with a cam portion formed eccentrically from a center axis, and the mirror part may be installed to have one end contacted with the cam portion and an opposite end to be able to rotate in the light movement space by the medium of a hinge part. 
     The mirror part may have one end to which an elastic body installed in the light movement space is connected, whereby the one end of the mirror part may come in contact with the cam portion by elastic force of the elastic body. 
     The side part may include: a neck part installed on the vehicle body or the door and provided with the light movement space and the reflection unit; and a head part installed at an end of the neck part and installed with the rear recognizer. 
     The neck part may include a base part installed on the vehicle body or the door and a sliding part that may move by sliding from the base part and to which the head part may be connected, wherein the light movement space may extend to communicate with the base part and the sliding part in a straight line. 
     The reflection unit may be installed in the light movement space of a side of the sliding part, thereby moving together with the sliding part. 
     The neck part may include a fixed part installed on the vehicle body or the door and a rotating part that may be installed to be able to rotate at an upper end of the fixed part and to which the head part may be connected, and the light movement space may be formed in the fixed part. 
     The image transmitter may be installed to be spaced apart from the side part, and a reflection mirror, configured to allow the light illuminated from the image transmitter to be reflected and moved to the light movement space, may be provided on the vehicle body or the side part. 
     An apparatus for a side projection lamp of a mobility device having a structure as described above can secure rear lateral sight from opposite lateral sides of the mobility device and illuminate light of a specific image on a road surface or an outer surface of the mobility device, thereby being allowed to communicate with a driver. 
     In addition, as an image transmitter configured to generate a specific image is installed on a vehicle body or a door side, a size of a side part configured to secure rear sight can be reduced. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The above and other objectives, features, and other advantages of the present disclosure will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings, in which: 
         FIG.  1    is a view showing an apparatus for a side projection lamp of a mobility device according to the present disclosure; 
         FIG.  2    is a block diagram showing an internal configuration of the apparatus for a side projection lamp of a mobility device illustrated in  FIG.  1   ; 
         FIG.  3    is a view showing an embodiment of an image transmitter according to the present disclosure; 
         FIG.  4    is a schematic view showing the image transmitter, a reflection unit, and a magnification lens according to the present disclosure; 
         FIG.  5    is a view showing an embodiment of the reflection unit according to the present disclosure; 
         FIG.  6    is a view explaining the embodiment of the reflection unit illustrated in  FIG.  5   ; 
         FIG.  7    is a view showing another embodiment of the reflection unit according to the present disclosure; 
         FIG.  8    is a view showing still another embodiment of the reflection unit according to the present disclosure; 
         FIG.  9    is a view showing an embodiment of a side part according to the present disclosure; 
         FIG.  10    is a view showing a developed state of the side part shown in  FIG.  9   ; 
         FIG.  11    is a view showing a state in which the side part illustrated in  FIG.  9    is stowed; 
         FIG.  12    is a view showing another embodiment of the side part according to the present disclosure; 
         FIG.  13    is a view showing a developed state of the side part illustrated in  FIG.  12   ; 
         FIG.  14    is a view showing an embodiment according to a state in which a reflecting mirror is configured in the present disclosure; 
         FIG.  15    is a view showing an embodiment according to a state in which a collection lens is configured in the present disclosure; and 
         FIG.  16    is a view showing image implementation of the apparatus for a side projection lamp of a mobility device according to the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinbelow, an apparatus for a side projection lamp of a mobility device according to exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. 
       FIG.  1    is a view showing an apparatus for a side projection lamp of a mobility device according to the present disclosure,  FIG.  2    is a block diagram showing an internal configuration of the apparatus for a side projection lamp of a mobility device illustrated in  FIG.  1   ,  FIG.  3    is a view showing an embodiment of an image transmitter according to the present disclosure, and  FIG.  4    is a schematic view showing the image transmitter, a reflection unit, and a magnification lens according to the present disclosure. 
       FIG.  5    is a view showing an embodiment of the reflection unit according to the present disclosure, and  FIG.  6    is a view explaining the embodiment of the reflection unit illustrated in  FIG.  5   . 
     Meanwhile,  FIG.  7    is a view showing another embodiment of the reflection unit according to the present disclosure, and  FIG.  8    is a view showing still another embodiment of the reflection unit according to the present disclosure. 
       FIG.  9    is a view showing an embodiment of a side part according to the present disclosure,  FIG.  10    is a view showing a developed state of the side part shown in  FIG.  9   , and  FIG.  11    is a view showing a state in which the side part illustrated in  FIG.  9    is stowed. 
     In addition,  FIG.  12    is a view showing another embodiment of the side part according to the present disclosure, and  FIG.  13    is a view showing a developed state of the side part illustrated in  FIG.  12   . 
       FIG.  14    is a view showing an embodiment according to a state in which a reflecting mirror is configured in the present disclosure,  FIG.  15    is a view showing an embodiment according to a state in which a collection lens is configured in the present disclosure, and  FIG.  16    is a view showing image implementation of the apparatus for a side projection lamp of a mobility device according to the present disclosure. 
     As shown in  FIG.  1   , the apparatus for a side projection lamp of a mobility device according to the present disclosure includes: a side part  100  installed on a vehicle body or a door A, provided with a rear recognizer  110  so as to secure rear lateral sight, and formed with a light movement space  120  at the inside thereof; an image transmitter  200  installed on the vehicle body or the door A and illuminating light for forming at least one image M into the light movement space  120  of the side part  100 ; and a reflection unit  300  installed in the light movement space  120  of the side part  100  and projecting the image M on a road surface or an outer surface of the mobility device by reflecting the light illuminated from the image transmitter  200 . 
     The side part  100  is installed on the vehicle body or the door A at either one of opposite sides of the mobility device and is installed with the rear recognizer  110  configured to secure sight of the rear and lateral sides. Here, the rear recognizer  110  may be composed of a mirror configured to secure rear sight or may be composed of a camera configured to obtain a photograph of an outside of a rear or lateral side of the mobility device and allow the obtained photograph to be output indoors. 
     However, when the rear recognizer  110  is composed of the mirror, it is easy to install the image transmitter  200  in the side part  100  as the mirror does not have any restrictions on the installation position, whereas, when the rear recognizer  110  is composed of the camera, there arises a restriction in installing the image transmitter  200  together with the camera in the side part  100 . That is, when both the rear recognizer  110  and the image transmitter  200  are installed in the side part  100 , an overall size of the side part  100  becomes to increase. 
     Accordingly, in the present disclosure, the light movement space  120  is formed inside the side part  100 , and the image transmitter  200  is installed in the vehicle body or the door A, whereby the light for forming the image is illuminated into the light movement space  120  of the side part  100 . As such, as the image transmitter  200  is excluded, the size of the side part  100  is reduced, and the light illuminated from the image transmitter  200  moves in the light movement space  120  and then may be projected on the road surface or the outer surface of the mobility device by being reflected by the reflection unit  300 . 
     On the other hand, the image transmitter  200  may be composed of a projector and installed on the vehicle body or the door A, so the size of the side part  100  may be reduced. 
     Accordingly, as shown in  FIG.  3   , the image transmitter  200  may include a light source  210  configured to illuminate the light, a variable mirror  220  configured to reflect the light illuminated from the light source  210  to form the image, and a lens  230  provided to make the light penetrate through a movement path of the light. 
     That is, the light source  210  may be composed of an LED, and the variable mirror  220  may be composed of a digital micromirror display (DMD). Through this, the light illuminated from the light source  210  may be projected, as various images by the variable mirror  220 , on the road surface or the outer surface of the mobility device. In addition, a plurality of the lenses  230  is composed of refraction lenses, imaging lenses, and the like and may be respectively arranged in the movement path of the light, whereby the light illuminated from the light source  210  may be allowed to be reflected by the variable mirror  220  and then to be incident precisely in the reflection unit  300 . 
     On the other hand, as shown in  FIGS.  2  and  4   , the apparatus for a side projection lamp of a mobility device further includes a magnification lens  400  installed in the light movement space  120  of the side part  100  to allow the light reflected through the reflection unit  300  to be incident thereon and configured to allow a size of the image according to the incident light to be adjusted. 
     Such a magnification lens  400  is installed at a lower end of the light movement space  120  of the side part  100  and, when the light reflected through the reflection unit  300  is projected to the outside, adjusts the size of the image due to the light so as to be visually recognizable from the outside. 
     In the case of the magnification lens  400 , the magnification may be determined according to the size of the image according to the light illuminated from the image transmitter  200 . In addition, the magnification lens  400  may be formed to allow the light reflected by the reflection unit  300  to be covered and may have the size being determined according to the range of the light. 
     As such, in the present disclosure, when the light illuminated from the image transmitter  200  is reflected by the reflection unit  300  and projected on the road surface or the outer surface of the mobility device, the size of the image is adjusted by the magnification lens  400  so that visibility of the corresponding image is ensured from the outside. 
     On the other hand, the reflection unit  300  may be configured to allow a projection position of the light illuminated from the image transmitter  200  to be adjusted by being installed to be able to rotate in the light movement space  120  of the side part  100 . 
     That is, the reflection unit  300  is installed to be able to rotate in the light movement space  120 , so the projection position and size of the image by the light illuminated from the image transmitter  200  may be adjusted according to the rotation angle of the reflection unit  300 . For this reason, communication through the image projected on the road surface or the outer surface of the mobility device is easy. 
     In detail, as shown in  FIG.  5   , the reflection unit includes: a mirror part  310  installed to be able to rotate in the light movement space  120  and reflecting the light illuminated from the image transmitter  200 ; and a rotation driving part  320  adjusting a rotation position of the mirror part  310  by being connected to the mirror part  310 . 
     As such, the reflection unit  300  includes the mirror part  310  and the rotation driving part  320 , wherein the mirror part  310  may be installed to be able to rotate in the light movement space  120  of the side part  100  to adjust a movement direction of the light, and the rotation driving part  320  may be connected to the mirror part  310  to control the rotational position of the mirror part  310 . 
     Here, the mirror part  310  is installed to be inclined obliquely in the light movement space  120  so that the incident light from the image transmitter  200  is reflected downward and moves. In addition, the rotation driving part  320  may be composed of a motor and is connected to the mirror part  310  to forcibly rotate the mirror part  310 , thereby allowing the inclination angle to be adjusted. 
     Here, the rotation driving part  320  may be operated under the control of a controller, and the controller controls the rotation driving part  320  according to the position or size of the image to be projected on the road surface or the outer surface of the mobility device, whereby the position at which the light is fmally emitted may be adjusted through adjustment of the angle of the mirror part  310 . 
     Such a reflection unit  300  may be applied to various embodiments. 
     As an embodiment, as shown in  FIGS.  5  to  6   , the mirror part  310  is installed to be able to rotate in the light movement space  120  by the medium of a hinge part  311 , and the rotation driving part  320  may be configured to rotate together with the hinge part  311  by being connected to the hinge part  311  by friction or a gear connection method. 
     As such, the mirror part  310  is installed to be able to rotate in the light movement space  120  of the side part  100  by the medium of the hinge part  311  and may be rotated together with the hinge part  311 , with the hinge part  311  as a center axis. Here, the rotation driving part  320  is installed adjacent to the hinge part  311  and connected to the hinge part  311  by the friction connection method or the gear connection method, thereby, when transmitting rotational power, allowing the mirror part  310  to rotate together with the hinge part  311 . Here, the rotation driving part  320  and the hinge part  311  are fastened in the gear connection method, so that the rotational position of the mirror part  310  may be precisely controlled. 
     For this reason, when the hinge part  311  is rotated according to the operation of the rotation driving part  320 , the mirror part  310  may be adjusted in the rotation angle together with the hinge part  311 , thereby switching the movement path of the light illuminated from the image transmitter  200 . Accordingly, the image according to the light illuminated from the image transmitter  200  may be adjusted in its position according to information to be transmitted from the road surface or the outer surface of the mobility device. 
     On the other hand, as shown in  FIG.  7    as another embodiment, a guide slot  121  may be extended in the light movement space  120  of the side part  100 , and the mirror part  310  may have one end  310   a  connected to the rotation driving part  320  by the medium of a link unit  312  composed of a plurality of links and an opposite end  310   b  connected, to be movable, to the guide slot  121 . 
     Here, the guide slot  121  may be extended in a straight line along the longitudinal direction of the side part  100  in the light movement space  120 . The opposite end  310   b  of the mirror part  310  is connected to be movable to such a guide slot  121  along the guide slot  121 , and one end  310   a  of the mirror part  310  is connected to the rotation driving part  320  by the medium of the link unit  312 . 
     For this reason, when the rotation driving part  320  is operated, while being rotated, the plurality of links constituting the link unit  312  rotates the mirror part  310 . At this time, as the opposite end  310   b  of the mirror part  310  is moved in the guide slot  121 , the mirror part  310  is rotated so that only the inclination angle is adjusted in the line of the guide slot  121 . This is to minimize a dead zone for the light illuminated from the image transmitter  200 , and a situation, in which the light is not incident on the mirror part  310  as the mirror part  310  is rotated, is to be avoided. 
     Here, the link unit  312  is composed of a four bar link, whereby the inclination angle adjustment of the mirror part  310  according to the rotation of each link may be smoothly performed during the operation of the rotation driving part  320 . 
     As such, the mirror part  310  has one end  310   a  connected to the rotation driving part  320  through the media of the link unit  312  and the opposite end  310   b  moved along the guide slot  121 . Accordingly, when the rotation driving part  320  is operated, the mirror part  310  is adjusted only in the inclination angle in a state of being positioned in the moving direction of the light illuminated from the image transmitter  200 , whereby the dead zone for the light is prevented and an accurate image may be projected. 
     On the other hand, as still another embodiment, as shown in  FIG.  8   , a rotation driving part  320  is formed with a cam portion  321  formed eccentrically from a center axis, and a mirror part  310  may be installed to have one end  310   a  contacted with the cam portion  321  and an opposite end  310   b  to be able to rotate in a light movement space  120  by the medium of a hinge part  311 . 
     As such, the mirror part  310  becomes to have a position fixed by the opposite end  310   b  that is installed in the light movement space  120  of the side part  100  by the medium of the hinge part  311 . In addition, the mirror part  310  becomes to have the inclination angle adjusted by the cam portion  321  which rotates according to the rotation driving part  320  operated in a state in which the one end is in contact with the cam portion  321 . 
     Here, the cam portion  321  may be eccentrically formed in an elliptical shape, and the rotation driving part  320  is eccentrically connected to the cam portion  321 , so that when the cam portion  321  rotates according to the operation of the rotation driving part  320 , the inclination angle of the mirror part  310  may be adjusted. This is to minimize a dead zone for the light illuminated from the image transmitter  200 , and a situation in which the light is not incident on the mirror part  310  as the inclination angle of the mirror part  310  is adjusted is avoided. 
     In addition, the mirror part  310  has one end to which an elastic body  313  installed in the light movement space  120  is connected, whereby the one end of the mirror part  310  comes in contact with the cam portion  321  by elastic force of the elastic body  313 . 
     The elastic body  313  may be composed of a compression spring and provide the elastic force in a direction in which the one end  310   a  of the mirror part  310  comes into contact with the cam portion  321 . For this reason, the one end  310   a  of the mirror part  310  is maintained in a status of being in contact with the cam portion  321  by the elastic body  313 , so that the angle may be smoothly adjusted by the rotation of the cam portion  321 . 
     As such, the mirror part  310  may have one end  310   a  contacted with the cam portion  321  and the opposite end  310   b  connected to be able to rotate by the media of the hinge part  311 . Accordingly, the mirror part  310  may be adjusted only in the inclination angle by the rotation of the cam portion  321  according to the operation of the rotation driving part  320  in a state of being positioned in the moving direction of the light illuminated from the image transmitter  200 , whereby the dead zone for the light may be prevented, and an accurate image may be projected. 
     On the other hand, the side part  100  may be configured to be stowed in a situation in which it is unnecessary to secure a rear sight such as a situation in which the mobility device is parked and the like. 
     To this end, as shown in  FIG.  2   , the side part  100  includes: a neck part  130  installed on the vehicle body or the door A and provided with the light movement space  120  and the reflection unit  300 ; and a head part  140  installed at an end of the neck part  130  and installed with a rear recognizer  110 . 
     As such, the side part  100  includes the neck part  130  and the head part  140 , wherein the neck part  130  is formed with the light movement space  120 , and the head part  140  installed with the rear recognizer  110  is connected to the end of the neck part  130 . 
     For this reason, in the side part  100 , the light illuminated from the image transmitter  200  installed in the vehicle body or the door A moves toward the reflection unit  300  by being incident on the light movement space  120  of the neck part  130  and may be projected on the road surface or the outer surface of the mobility device while moving downward by being reflected by the reflection unit  300 . 
     In particular, the neck part  130  and the head part  140  are composed of a sliding or rotating structure, so the side part  100  may be configured to have the overall size to be reduced. 
     As an embodiment according to this, as shown in  FIGS.  9  to  11   , the neck part  130  may include a base part  131  installed on the vehicle body or the door A and a sliding part  132  that moves by sliding from the base part  131  and to which the head part  140  is connected. 
     Here, the light movement space  120  extends to communicate with the base part  131  and the sliding part  132  in a straight line. 
     In addition, the reflection unit  300  may be installed in the light movement space  120  of the side of the sliding part  132 , thereby moving together with the sliding part  132 . 
     That is, the neck part  130  is composed of the base part  131  and the sliding part  132  and configured to have a structure in which the sliding part  132  moves by being slid, thereby being inserted in the base part  131 . Accordingly, the overall size of the neck part  130  may be reduced. Accordingly, the base part  131  may be formed so that the sliding part  132  is inserted therein, and in the base part  131 , a latching structure configured to limit excessive movement of the sliding part  132  and a sealing structure configured to maintain airtightness between the base part  131  and the sliding part  132  may be applied. 
     In addition, as may be seen in  FIG.  9   , the base part  131  and the sliding part  132  are each formed to have an open lower surface, the light illuminated from the image transmitter  200  may be projected downward when reflected by the reflection unit  300 . Here, the magnification lens  400  may be provided in each of the open portions of the base part  131  and the sliding part  132 . 
     For this reason, when the sliding part  132  is in a state of being withdrawn from the base part  131 , the light illuminated from the image transmitter  200  may be moved to the light movement space  120 , reflected by the reflection unit  300 , and then projected on the road surface or the outer surface of the mobility device. In addition, even when the sliding part  132  is in a state of being inserted into the base part  131 , the light illuminated from the image transmitter  200  may be moved to the light movement space  120 , reflected by the reflection unit  300 , and then projected on the road surface or the outer surface of the mobility device. 
     In addition, the reflection unit  300  is installed in the light movement space  120  of the side of the sliding part  132 , and moved together with the sliding part  132 , thereby implementing various types of images by adjusting the size or position of the image according to the light illuminated from the image transmitter  200  through an operation in which the sliding part  132  moves from the base part  131 . 
     As such, the neck part  130  is composed of the base part  131  and the sliding part  132 , and the sliding part  132  may be withdrawn from or inserted into the base part  13 , whereby the side part  100  according to the embodiment may be adjusted in the overall size according to parking or driving conditions of the mobility device. 
     In addition, through the movement of the sliding part  132 , the size or position of the image according to the light illuminated from the image transmitter  200  may be adjusted, so it is possible to implement various types of images. 
     Here, the above-described movement of the sliding part  132  may be implemented by a motor installed in the base part  131 . 
     On the other hand, as another embodiment, as shown in  FIGS.  12  to  13   , the neck part  130  may include a fixed part  133  installed on the vehicle body or the door A and a rotating part  134  that is installed to be able to rotate at an upper end of the fixed part  133  and to which the head part  140  is connected. 
     Here, the light movement space  120  is formed in the fixed part  133 . 
     That is, the neck part  130  is composed of a fixed part  133  and a rotating part  134  and has a structure in which the rotating part  134  is folded by being rotated at the fixed part  133 , so the overall size of the neck part  130  may be reduced. 
     Accordingly, the fixed part  133  is installed on the vehicle body or the door A and formed with the light movement space  120  therein so that the light illuminated from the image transmitter  200  may be incident on the light movement space  120  and then reflected by the reflection unit  300 , thereby being projected on the road surface or the outer surface of the mobility device. 
     Here, the rotating part  134  is installed to be able to rotate on the upper end of the fixed part  133 , so that the head part  140  may be folded by being rotated by the rotation of the rotating part  134 . In addition, the rotating part  134  is installed on the upper end of the fixed part  133 , thereby not interfering with the light emitted from the light movement space  120  of the fixed part  133 . 
     Here, the above-described movement of the rotating part  134  may be implemented by a motor installed in the fixed part  133 . 
     As such, the neck part  130  is composed of the fixed part  133  and the rotating part  134 , and the rotating part  134  may be rotated at the fixed part  133 , so that the side part  100  according to another embodiment may be adjusted in the overall size according to parking or driving conditions of the mobility device. 
     On the other hand, as shown in  FIG.  14   , the image transmitter  200  is installed to be spaced apart from the side part  100 , and a reflection mirror  500 , configured to allow the light illuminated from the image transmitter  200  to be reflected and moved to the light movement space  120 , may be provided on the vehicle body or the side part  100 . 
     When the image transmitter  200  is installed on the vehicle body or the door A, space restrictions may occur. Therefore, the image transmitter  200  is installed to be spaced apart from the side part  100 , and the reflection mirror  500  may be installed on the vehicle body or the side part  100  and may allow the light illuminated from the image transmitter  200  to be reflected and moved to the light movement space  120 . For this reason, the space limitation caused by installing the image transmitter  200  is avoided, so the installation of the image transmitter  200  is easy. 
     In addition, as shown in  FIG.  15   , a collection lens B may be further provided in the light movement space  120  of the side part  100 . For this reason, the light illuminated from the image transmitter  200  is moved by being focused, thereby moving smoothly toward the reflection unit  300  with directionality in the light movement space  120 . In addition, it is possible to allow the image according to the light illuminated from the image transmitter  200  to be accurately projected fmally by further applying not only the collection lens B but also an inverting lens. 
     The apparatus for a side projection lamp of a mobility device having a structure as described above can secure rear lateral sight from opposite lateral sides of the mobility device and illuminate light of a specific image on a road surface or an outer surface of the mobility device, thereby being allowed to communicate with a driver. In addition, the projection range of the image may be adjusted by the reflection unit  300  so that the size and quality of the image may be adjusted, thereby replacing displays of the opposite lateral sides of the mobility device. 
     In addition, as the image transmitter configured to generate a specific image is installed on the vehicle body or the door side, the size of the side part configured to secure rear sight is reduced. 
     As shown in  FIG.  16   , the light illuminated from the image transmitter  200  may be reflected by the reflection unit  300  configured to be able to rotate and be projected on the road surface or the outer surface of the mobility device, thereby implementing various images. 
     Although the present disclosure has been shown and described in relation to specific embodiments, it will be obvious to those of ordinary skill in the art that the present disclosure may be variously improved and changed within a scope without departing from the technical spirit of the present disclosure provided by the following claims.