KR20200113584A - Hologram Image Display Apparatus - Google Patents

Abstract

A hologram image display apparatus includes: an infinite reflection mirror unit including a first mirror, a second mirror facing the first mirror, a first light source unit positioned between the first mirror and the second mirror, and a mirror unit body accommodating the first mirror, the first light source unit, the first light source, and the second mirror, wherein in the infinite reflection mirror unit, at least one of the first mirror and the second mirror is configured as a half mirror to infinitely reflect light emitted from the first light source unit between the first mirror and the second mirror; a motor unit configured to be rotatable about a rotation axis; at least one or more blades extending around the rotation axis in a main body; the second light source unit wherein a plurality of light emitting elements are arranged along the length direction of the blade; and a control unit which controls light emission of the plurality of light emitting elements according to the rotation of the blade, thereby obtaining excellent 3D stereoscopic effects of a hologram displayed with high resolution and sharpness.

Description

Hologram Image Display Apparatus}

The present invention relates to a holographic image display device.

As an example of a conventional holographic image display device, the device disclosed in Patent Document 1 includes a plurality of light arrays, a control board to which each light array is independently connected, and a motor that rotates the control board through a rotation shaft.

Light emitting elements included in each light array rotated by the driving force of a motor are controlled to emit light by a control board. The control board controls light emission of each light emitting device according to a rotation position and time to display a set image, and an image set by an afterimage of the light emitting device rotating in a light emitting state is displayed in a hologram form.

In such a holographic image display device, one content is expressed by a single device, but a plurality of devices are arranged to display a multi-vision image.

Patent Document 1: US Patent Publication No. 2017/0124925

The holographic image display device as described above is being used for various purposes, including advertisements, depending on the image content, and its use is gradually increasing.

As the use of such a holographic image display device increases, the demand for image quality, that is, a high resolution and sharpness of an image, and an excellent 3D stereoscopic effect of a hologram is increasing.

The present invention has been devised to solve the above problems, and one technical problem to be achieved by the present invention is to provide a holographic image display device capable of obtaining an excellent 3D stereoscopic effect of a hologram displayed with high resolution and clarity.

The problem of the present invention is not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

According to at least one embodiment of the present invention, a first mirror, a second mirror facing the first mirror, a first light source unit positioned between the first mirror and the second mirror, and the first mirror, the A first light source unit and a mirror unit main body for accommodating the second mirror, and at least one of the first mirror and the second mirror is configured as a half mirror so that the light emitted from the first light source unit is At least one of a main body configured to be rotatable about a rotation axis and an infinite reflection mirror unit that infinitely reflects between a mirror and the second mirror, a motor unit for rotating the main unit, and at least one formed in the main unit extending around the rotation axis And a second light source unit in which a plurality of light-emitting elements are arranged along the length direction of the blade, and a control unit that controls light emission of the plurality of light-emitting elements according to the rotation of the blade, and is located in front of the infinite reflection mirror unit. It provides a holographic image display device having a holographic image display unit.

In at least one embodiment of the present invention, both the first mirror and the second mirror are the half mirrors, and the holographic image display portion is located on the front surface of the first mirror.

In at least one embodiment of the present invention, the infinite reflection mirror unit further includes a light blocking plate on the rear side of the second mirror.

In at least one embodiment of the present invention, the main body of the mirror unit includes the light blocking plate.

In at least one embodiment of the present invention, the first mirror is the half mirror, the second mirror is a full mirror, and the holographic image display part is located in front of the first mirror.

In at least one embodiment of the present invention, the holographic image display device further includes a fastening part for fastening the infinite reflection mirror part and the holographic image display part.

In at least one embodiment of the present invention, the fastening unit is fastened so that the front surface of the infinite reflection mirror unit and the rear surface of the holographic image display unit contact each other.

In at least one embodiment of the present invention, the fastening unit is fastened with a predetermined distance between the front surface of the infinite reflection mirror unit and the rear surface of the holographic image display unit.

In at least one embodiment of the present invention, the holographic image display unit includes a plurality of heat dissipation holes formed in the blade.

In at least one embodiment of the present invention, the plurality of heat dissipation holes are formed to create a flow path of air from an upstream side to a downstream side in a rotation direction in which the blade rotates with respect to the plurality of light emitting elements.

In at least one embodiment of the present invention, the flow path is formed in a straight line from the upstream side to the downstream side.

In at least one embodiment of the present invention, the flow path is formed in an arc shape around the rotation axis from the upstream side to the downstream side.

In at least one embodiment of the present invention, the blade further includes a blade body in which the light emitting part is installed and a light source part cover coupled to the blade body so as to cover the light emitting part, and the heat dissipation hole comprises the light source part cover and the It is formed on at least one of the blade bodies.

In the present specification, each embodiment is described independently, but each embodiment can be combined with each other, and a combined embodiment is also included in the scope of the present invention.

The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the above-described illustrative aspects, embodiments, and features, further aspects, embodiments, and features will become apparent by reference to the drawings and the detailed description below.

According to at least one embodiment of the present invention, there is an effect of providing a holographic image display device capable of obtaining an excellent 3D stereoscopic effect of a hologram displayed with high resolution and clarity.

The effects of the present invention are not limited to those mentioned above, and other effects that are not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

1 is an image showing an actual example of a holographic image display device according to at least one embodiment of the present invention.
2 is a front view of a holographic image display device according to at least one embodiment of the present invention.
3 is an exploded perspective view of an infinite reflection mirror unit having a light blocking plate according to at least one embodiment of the present invention.
4 is an exploded perspective view of an infinite reflection mirror unit without a light blocking plate according to at least one embodiment of the present invention.
5 is a side cross-sectional view of an infinite reflection mirror part of a holographic image display device according to at least one embodiment of the present invention.
6 is an exploded perspective view of a holographic image display unit having three blades according to at least one embodiment of the present invention.
7 is an enlarged view of portion A shown in FIG. 6.
8 is an enlarged view of portion C shown in FIG. 6.
9 is an image showing a hologram display example of a typical holographic image display device without an infinite reflection mirror unit mounted.
10 is an image showing an example of a hologram display of a holographic image display device equipped with an infinite reflection mirror unit according to at least one embodiment of the present invention.

Hereinafter, a holographic image display device according to at least one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is an image showing an actual example of a holographic image display device according to at least one embodiment of the present invention. 2 is a front view of a holographic image display device 100 according to at least one embodiment of the present invention.

The holographic image display device 100 according to at least one embodiment of the present invention includes an infinite reflection mirror unit 110 using a pair of half mirrors and a rotation type holographic image display unit 120 positioned in front of the mirror unit 110.

The infinite reflection mirror unit 110 mounts a light source between a pair of mirrors (two half mirrors, one half mirror and one full mirror) so that light emitted from the light source is infinitely reflected between the pair of mirrors and It provides a deep spatial background.

The holographic image display unit 120 is composed of a plurality of blades including a plurality of light emitting devices, and provides a three-dimensional hologram by synchronizing light emission from the plurality of light emitting devices with rotation of the blades.

Accordingly, the hologram displayed by the holographic image display unit 120 is placed on the front side, and the infinite reflection mirror unit 110 provides a deep spatial background from the rear side, thereby obtaining an excellent 3D stereoscopic effect of the hologram.

1 and 2 show an example in which a rotating holographic image display unit having four blades is mounted on an infinite reflection mirror unit, but the number of blades may be set to 2, 3, or 4 or more as necessary.

Hereinafter, the infinite reflection mirror unit 110 will be described in detail with reference to FIGS. 3 to 5.

3 is an exploded perspective view of an infinite reflection mirror unit according to at least one embodiment of the present invention. 4 is an exploded perspective view of an infinite reflection mirror unit having a light blocking plate according to at least one embodiment of the present invention.

As shown in FIG. 3, the infinite reflection mirror unit 110 is a power supply that supplies power to the first mirror 111, the light source unit 112, the second mirror 114, and the first light source unit 112 from the front side. It consists of a supply unit 116. The light source unit 112 includes a plurality of light source elements 113.

The first mirror 111 and the second mirror 114 are half mirrors each having a transmittance of about 50% and a reflectance of about 50%. When the plurality of light source elements 113 emit light, the emitted light is transmitted to the first mirror. It is infinitely reflected between (111) and the second mirror (114).

As shown in FIG. 4, the infinite reflection mirror unit 110 may include a light blocking plate 115 on the rear surface of the second mirror 114. The infinite reflection mirror unit 110 without the shading plate 115 shown in FIG. 3 is a double-sided type capable of using both the first mirror 111 side and the second mirror 114 side as the front side, and is shown in FIG. 4. The infinite reflection mirror unit 110 has a cross-sectional shape that can be used only on one side (in the example shown in FIG. 4, the first mirror 111 side).

In at least one embodiment of the present invention, the first mirror 111 is a half mirror and the second mirror 114 is a general full mirror. Similarly in this case, when the plurality of light source elements 113 emit light, the emitted light is infinitely reflected between the first mirror 111 and the second mirror 114.

When both the first mirror 111 and the second mirror 114 are half mirrors, they operate in a double-sided type or a single-sided type depending on the presence or absence of the shading plate 115, but the first mirror 111 is a half mirror and a second When the mirror 114 is a full mirror, it operates in a cross-sectional shape in which the side of the first mirror 111 becomes the front side.

5 is a side cross-sectional view of a cross-sectional endless reflection mirror unit 110. As shown in FIG. 5, the infinite reflection mirror unit 110 includes a first mirror 111, a first light source unit 112, and a mirror unit body 117 for accommodating the second mirror 114. .

When both the first mirror 111 and the second mirror 114 are half mirrors, the surface of the mirror body 117 on the side of the second mirror 114 may serve as the light blocking plate 115.

When the first mirror 111 is a half mirror and the second mirror 114 is a full mirror, the mirror unit body 117 includes a first mirror 111, a first light source unit 112, and a second mirror 114 It may be in the form of a frame surrounding the outer circumferential direction of.

The holographic image display device 100 according to at least one embodiment of the present invention further includes a fastening unit (not shown) for fastening the infinite reflection mirror unit 110 and the holographic image display unit 120.

In at least one embodiment of the present invention, the fastening unit (not shown) is fastened so that the front surface of the infinite reflection mirror unit 110 and the rear surface of the holographic image display unit 120 contact each other. In this case, as shown in FIG. 1, it is relatively easy to fasten the motor unit of the holographic image display unit 120 to the front surface of the infinite reflection mirror unit 110. In addition, since the infinite reflection mirror unit 110 may serve as a support unit supporting the entire holographic image display unit 120, it has a structural advantage.

In at least one embodiment of the present invention, the fastening unit (not shown) is fastened with a predetermined distance between the front surface of the infinite reflection mirror unit 110 and the rear surface of the holographic image display unit 120. In this case, a separate frame (not shown) for fastening the infinite reflection mirror unit 110 and the holographic image display unit 120 is required, but the advantage that the vibration of the motor is not directly transmitted to the infinite reflection mirror unit 110 There is this.

6 is an exploded perspective view of a holographic image display unit 120 according to at least one embodiment of the present invention. In FIG. 6, for convenience of explanation, a holographic image display unit 120 having three blades is described as an example.

As shown in Figure 6, the holographic image display unit 120 is a main body composed of an upper main body 122 and a lower main body 126, a blade composed of a blade cover 123 and a blade main body 127, LED PCB 124, a main controller 125, and a motor unit 121. Each blade includes a second light source in which a plurality of light emitting elements 124b are arranged along the length direction.

The motor unit 121 includes a motor housing and a motor (not shown) installed therein, and the body parts 122 and 126 are rotatably supported by the motor housing and are connected to the rotation axis of the motor to rotate according to the rotation of the motor. Is done.

The blades 123 and 127 are formed to extend radially from the body portions 122 and 126 and rotate together with the body portions 122 and 126. The blades 123 and 127 include a blade cover 123 and a blade body 127.

The blade body 127 is formed to extend from the lower body portion 126 connected to the rotation shaft of the motor. The blade cover 123 covers and protects the LED PCB 124 while covering the entire surface of the blade body 127.

The lower body portion 126 is formed extending in a radial direction at three locations of the blade body 127. The number of blades is not limited to three, and may be set to two or four or more as necessary.

The lower end portion of the lower body portion 126 includes a disk-shaped bottom portion, and the bottom portion is rotatably supported on the upper portion of the motor housing and is coupled to rotate together with the rotation shaft of the motor.

The lower body portion 126 provides a predetermined accommodation space in which the central portion of the main controller 125 and the LED PCB 124 are accommodated.

The blade body 127 is formed to be elongated in the longitudinal direction (radial direction) and includes a PCB mounting groove 127a in which the LED PCB 124 is accommodated. The blade cover 123 is formed extending in the radial direction from the upper body portion 122.

The upper body part 122 covers the lower body part 126, and the blade cover 123 is coupled to cover the blade body 127.

The blade cover 123 includes a transparent window (not shown) made of a transparent material. The transparent window (not shown) is formed long with respect to the blade cover 123 in the longitudinal direction (radial direction with respect to the rotation center) to allow light emitted from the light emitting device 124b to be transmitted to the outside.

The LED PCB 124 is a plurality of LEDs 124b, which are light emitting devices installed in a row with respect to the length direction (radial direction) of the printed circuit board (PCB) 124a and the substrate 124a, as shown in FIG. And driving elements 124c for driving each LED 124b. In at least one embodiment of the present invention, the number of LEDs 124b may be determined according to the resolution. For example, the number of LEDs 124b may be 256, 512, 1024, or the like.

The driving element 124c is an LED controller and constitutes a control unit that controls light emission of the LED 124b together with the main controller 125. Each driving element 124c receiving a control signal for light emission from the main controller 125 controls light emission of the corresponding LED 124b according to the signal. Here, the control signal from the main controller 125 may be a signal programmed to represent a predetermined image.

The main controller 125 includes a main processor (not shown) and a memory (not shown), and may further include a communication module (not shown) and a wireless power receiving module (not shown). The image to be displayed may be stored in a memory and accessed by the main processor. The main processor transmits an LED emission control signal for displaying the image to the individual LED driving elements 124c according to the image information read from the memory.

The main controller 125 may receive an image or the like from the outside through wireless communication through a communication module, and may receive power from an external wireless power transmission module through the wireless power receiving module. For example, the wireless power transmission module may be installed in the motor unit 121.

The printed circuit board (PCB) 124a is inserted into the seating groove 127a formed in the blade body 127. The depth of the mounting groove 127a is preferably formed to be about the thickness of the printed circuit board (PCB) 124a so that the printed circuit board (PCB) 124a can be completely inserted.

In addition, the circumferential width of the mounting groove (127a) is preferably designed to match the circumferential width of the printed circuit board (PCB) 124a, through which the LED PCB 124 is rotated during rotation of the blades 123 and 127. It should not be shaken or moved within the seating groove (127a).

8 is an enlarged view of portion C showing a plurality of heat dissipation holes 122 formed in the blade body 127.

In at least one embodiment of the present invention, the blade is configured by combining a blade cover 123 and a blade body 127, and a printed circuit board (PCB) 124a and an LED 124b as a light emitting element therein are Installed.

In at least one embodiment of the present invention, the blade body 127 may be formed with a plurality of heat dissipation holes 122 penetrating laterally corresponding to the position of the LED 124b.

In at least one embodiment of the present invention, a plurality of heat dissipation holes 122 may be formed in the blade cover 123 to correspond to the position of the LED 124b. This heat dissipation hole 122 is formed corresponding to each LED (124b).

When the blades 123 and 127 rotate, air flows through the plurality of heat dissipation holes 122, and heat of the LED 124b is released in the air flow. That is, a plurality of heat dissipation holes 122 provide an air cooling structure to the LED 124b by the flow of air.

The heat dissipation hole 122 may be formed as a through hole from an upstream side to a downstream side with respect to the blades 123 and 127, and the shape structure thereof may be linear or an arc shape centered on a rotation axis.

When the heat dissipation hole 122 is straight, it is easy to form the heat dissipation hole 122, and in the case of an arc shape, the air resistance is small because the air flow in the heat dissipation hole 122 is aligned with the rotation direction. There is an advantage. In addition, the small air resistance also helps to reduce aerodynamic noise.

9 is an image showing a hologram display example of a typical holographic image display device without an infinite reflection mirror unit mounted. 10 is an image showing an example of a hologram display of a holographic image display device equipped with an infinite reflection mirror unit according to at least one embodiment of the present invention.

As can be seen by comparing the image shown in FIG. 9 with the image shown in FIG. 10, the holographic image display device according to at least one embodiment of the present invention provides a background of a deep sense of space provided by the infinite reflection mirror unit. Therefore, it is possible to obtain a superior 3D stereoscopic effect compared to a conventional holographic image display device without an infinite reflection mirror unit.

In addition, since the holographic image display device according to at least one embodiment of the present invention has a heat dissipation structure capable of effectively dissipating heat from the light emitting element, brightness is increased by increasing the current that can be applied to each light emitting element. And sharpness can be increased.

As described above, according to at least one embodiment of the present invention, by providing a deep background and heat dissipation effect in a holographic image display device, it is possible to obtain an excellent 3D stereoscopic effect of a hologram displayed with excellent clarity.

At least one embodiment of the present invention has been described above with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains to implement the present invention in other specific forms without changing the technical spirit or essential features. You can understand that it can be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting.

100: holographic image display device 110: infinite reflection mirror unit
111: first half mirror 112: light source unit
113: light-emitting element 114: second half mirror
115: shading plate 116: power
120: hologram image display unit 121: motor unit
122: upper main body 123: light source cover
124: light source unit 125: controller
126: lower body portion 127: blade body

Claims (13)

Accommodating a first mirror, a second mirror facing the first mirror, a first light source unit positioned between the first mirror and the second mirror, and the first mirror, the first light source unit, and the second mirror It includes a mirror unit body to perform, and at least one of the first mirror and the second mirror is configured as a half mirror to infinitely reflect light emitted from the first light source unit between the first mirror and the second mirror An infinite reflection mirror unit; And
A body part configured to be rotatable about a rotation axis, a motor part for rotating the body part, at least one blade extending around the rotation axis in the body part, and a plurality of light emitting elements arranged along the length direction of the blade A holographic image display unit that includes a second light source unit and a control unit that controls light emission of the plurality of light emitting devices according to rotation of the blade, and is located in front of the infinite reflection mirror unit
Having,
Holographic video display device. The method of claim 1,
The first mirror and the second mirror are both the half mirrors,
The holographic image display unit is located on the front surface of the first mirror,
Holographic video display device. The method of claim 2,
The infinite reflection mirror unit further comprises a light blocking plate on the rear side of the second mirror,
Holographic video display device. The method of claim 3,
The mirror unit body includes the light blocking plate,
Holographic video display device. The method of claim 1,
The first mirror is the half mirror,
The second mirror is a full mirror,
The holographic image display unit is located on the front surface of the first mirror,
Holographic video display device. The method according to any one of claims 1 to 5,
Further comprising a fastening part for fastening the infinite reflection mirror part and the holographic image display part,
Holographic video display device. The method of claim 6,
The fastening part is fastened so that the front surface of the infinite reflection mirror part and the rear surface of the holographic image display part contact each other
Holographic video display device. The method of claim 6,
The fastening part is fastened with a predetermined distance between the front surface of the infinite reflection mirror part and the rear surface of the hologram image display part,
Holographic video display device. The method of claim 1,
The holographic image display unit comprises a plurality of heat dissipation holes formed in the blade,
Holographic video display device. The method of claim 9,
The plurality of heat dissipation holes are formed to create a flow path of air from an upstream side to a downstream side in a rotation direction in which the blade rotates with respect to the plurality of light emitting elements,
Holographic video display device. The method of claim 10,
The flow path is formed in a straight line from the upstream side to the downstream side,
Holographic video display device. The method of claim 10,
The flow path is formed in an arc shape centered on the rotation axis from the upstream side to the downstream side,
Holographic video display device. The method of claim 9,
The blade,
The blade body in which the light emitting part is installed, and
Further comprising a light source unit cover coupled to the blade body to cover the light emitting unit,
The heat dissipation hole is formed in at least one of the light source unit cover and the blade body,
Holographic video display device.

Images