KR101942547B1 - Low-Level Laser therapeutic- apparatus - Google Patents

Abstract

The present invention provides an LED whole body treatment apparatus which comprises: a body unit including an upper plate on which a user is positioned; a cover unit coupled to the body unit to cover the upper plate; a first light irradiation unit arranged in the body unit and emitting light toward the upper plate from a lower side of the upper plate; and a second light irradiation unit arranged on the cover unit and emitting light toward the upper plate. The first light irradiation unit and the second light irradiation unit have a plurality of bar type light modules with a plurality of light sources arranged along the first direction. The plurality of the light modules are arranged in parallel along the second direction vertical to the first direction and separated into a first set, a second set and a third set. The first set includes a plurality of first light modules having light sources of a green wavelength band of visible ray and sequentially aligned in an order of shortest wavelength of the light source along the second direction, the second set includes a plurality of second light modules having light sources of a red wavelength band of visible ray and sequentially aligned in an order of shortest wavelength of the light source along the second direction, and the third set includes a plurality of third light modules having light sources of a wavelength band of near infrared ray and sequentially aligned in an order of shortest wavelength of the light source along the second direction. The present invention can effectively distribute heat generated from the light sources.

Description

Low-Level Laser therapeutic-apparatus

The present invention relates to an LED system therapy apparatus.

The LED whole body treatment device is a device that treats the human body by three-dimensionally irradiating the light irradiated from LED on the whole body. Light of a specific wavelength band can generate nitric oxide of intravascular epithelial cells to improve vasoconstricting ability, thereby improving blood circulation and further improving chronic diseases such as various painful skin diseases, colds and so on.

This phototherapy is historically very old medical technology. There were technologies using sunlight or halogen lamps to treat skin diseases or blood circulation. Recently, there are phototherapy technologies using light of a short wavelength band. Especially, it is used for skin cosmetic and pain treatment using blue, green and red visible light.

In the case of treatment using light, only the local area of the human body such as face, waist, shoulder, All organs of the human body are connected. Because blood circulation should treat the whole body, such topical treatment has limitations in the treatment of the human body.

Korean Patent Laid-Open Publication No. 10-2014-0025154, published on Mar. 04, 2014 (hereinafter referred to as "the present document"), includes a main frame in which a whole body light irradiator is installed horizontally or vertically on the ground, And a cover frame installed to face the main frame and irradiating light to a skin of a user located in the main frame; The cover frame includes: a first case having a first surface facing the main frame, the first case being open; A light source emitter which is installed inside the first case and has light sources for irradiating light toward a user located between the main frame and the cover frame through an open side; And a first convection blocking cover installed on one opened surface of the first case so as to prevent the convection heat generated when the light sources emit light from being separated from the outside by spatially separating the light emitting unit from the outside. This document is merely to illuminate the LED on the whole body. What kinds of LEDs are used, and what wavelength range LEDs are not described.

 There are hundreds of kinds of LEDs, and there are many kinds of LEDs depending on the wavelength band and usage. E.g. LEDs are classified into three types as Visible LED that emits visible light (visible light) according to the wavelength of emitted light, Infrared LED that emits invisible light, and Ultraviolet LED. There are also harmful ultraviolet and infrared wavelength bands.

Visible LED emits various light of visible light band such as White, Blue, Red, Green, Yellow. At this time, each of the visible LEDs may be a single wavelength LED that emits one light. or. The Visible LED can be a full color LED that emits light of various colors by putting a material that realizes R, G, B colors which are three primary colors of light in one LED. These Visible LEDs are used for home, industrial, display backlight, lighting and signal display.

Infrared LED, also called IR (Infrared) LED, emits light of 730 ~ 940nm wavelength range. Infrared LEDs are mainly used for low light illumination, sensor for detection, IR communication etc. depending on the wavelength of light.

Ultraviolet LED is also called UV (ultraviolet) LED and emits light of wavelength range of 280 ~ 420nm. Ultraviolet LEDs are mainly used for medical use, bill identification devices, environmental sensors, and sterilization, depending on the wavelength of light.

On the other hand, the types of LED according to package shape are divided into lamp type and SMD type LED. Lamp type There are round type (round type) and oval type (oval type) depending on the shape, and the allowable current is mainly 20mA or less. As SMD type LED. The TOP VIEW LED is the LED whose light direction is front. TOP VIEW LED is 60 ~ 150mA mainly for the allowable current. (0.2 ~ 0.5W), and a 0.5W LED is also called a middle power LED. The side view LED is the LED whose light emitting direction is the side. The allowable current of side view LED is mainly 60 ~ 150mA. (0.2 to 0.5 W). 3 Power LED is a high-brightness LED with power consumption of 1W or more. The allowable current of Power LED is mainly 350mA or more. (1W or more) 3Power LED is attached to the lens to diffuse the emitted light. The COB (Chip On Board) LED is the arrangement of several LED chips on one board. The COB method can solve the heat efficiency, miniaturization, light weight and price problem than the conventional SMD LED method.

There are various kinds of LEDs, and there are various ranges such as ultraviolet band, visible light of 300nm 760nm band, near infrared ray of 760nm ~ 1,200nm band, and far infrared ray of 1,201 ~ 4,000nm band. (LEDs with a band width of 1 nm are produced)

The present invention can be constituted and arranged such that it is uniformly irradiated to the human body in the visible light wavelength band and the near infrared wavelength band by the SMD Type 3528 LED.

Korean Patent Publication No. 10-2014-0025154 (published on Mar. 04, 2014)

An object of the present invention is to provide an LED whole body therapy apparatus capable of effectively dispersing heat generated from a light source while irradiating light of various wavelength ranges beneficial to the human body.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned here can be understood by those skilled in the art from the following description.

According to an embodiment of the present invention, there is provided a lighting device comprising: a body portion including an upper plate on which a user is positioned; a cover portion coupled to the body portion to cover the upper plate; And a second light irradiation part which is arranged on the cover part and irradiates light toward the upper plate, wherein the first light irradiation part and the second light irradiation part are arranged such that a plurality of light sources are arranged in a first direction A plurality of optical modules in the form of a bar arranged in a row and arranged in parallel along a second direction perpendicular to the first direction, the first set and the second set, Wherein the first set includes a plurality of first optical modules including a light source of a green wavelength band of visible light and arranged in order of wavelengths of light sources sequentially along the second direction, The second Wherein the third set includes a plurality of second optical modules including a light source of a red wavelength band of visible light and arranged in order of wavelengths of the light sources sequentially along the second direction, And a plurality of third optical modules including a light source and sequentially arranged along the second direction in the order of shorter wavelengths of the light sources.

Preferably, at least two of the first optical module, the second optical module, and the third optical module are alternately arranged along the second direction.

Preferably, the optical module includes a base and a substrate coupled to the base and having the light source mounted thereon, the base including a bottom portion and side portions disposed on both sides of the bottom portion, And a first heat convection space disposed between the bottom and the substrate.

Preferably, the first light irradiation portion and the second light irradiation portion may have a second heat sink space disposed between the side and the side of the base of the adjacent optical module.

Preferably, the cover portion includes a first cover detachably coupled to a front surface of the body portion. And a second cover coupled to the rear surface of the body portion and hinged to the first cover, wherein the first cover includes a first lower plate covering the second light irradiation portion, and the second cover includes a second light And a second lower plate covering the irradiated portion, wherein a radius of curvature of the first lower plate and a radius of curvature of the second lower plate may be the same.

Preferably, the opening assisting device further comprises: a tension coil spring disposed in the body portion; a pulley rotatably disposed in at least one of the body portion and the cover portion; Wherein the tension coil spring is arranged to be stretched so as to have a restoring force by the wire when the cover part is fixed to the body part by covering the body part with the wire connecting the tension coil spring and the cover part .

According to the embodiment, there is provided an advantageous effect of enhancing the therapeutic effect of the human body.

According to the embodiment, it is possible to effectively disperse heat generated in the light source.

1 is a front view showing an LED system medical treatment apparatus according to an embodiment,
FIG. 2 is a perspective view of the LED whole body treatment apparatus shown in FIG. 1,
4 is a view showing a first light irradiation part,
5 is a view showing an arrangement of optical modules of the first light irradiation part,
6 is a side sectional view of the optical module of the first light irradiation part,
7 is a side view showing the first lower plate and the second lower plate of the cover portion,
8 is a side view showing a state in which the cover portion is opened,
Figure 9 shows an opening aid,
10 is a view showing the operating state of the opening auxiliary device when the cover portion is opened,
11 is a view showing a control panel,
12 is a view showing the ventilation device.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages, and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. The terms and words used in the present specification and claims should not be construed to be limited to ordinary or dictionary terms and the inventor should properly define the concept of the term in order to describe its own invention in the best way. The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a front view showing an LED system medical treatment apparatus according to an embodiment, and FIG. 2 is a perspective view of the LED system treatment apparatus shown in FIG.

1 and 2, an LED system treatment apparatus according to an embodiment includes a body 10, a cover 20, a first light irradiation part 30, and a second light irradiation part 40 do.

The body portion 10 provides a space in which the user can lie down. The body portion 10 includes an upper plate 11. The upper plate 11 is disposed on the upper surface of the body 10. The upper plate 11 has a size such that the user's entire body can be accommodated. The user lays down on the upper plate 11 or lifts it up. The upper plate 11 is made of a transparent material (for example, polycarbonate). The first light irradiation part 30 is disposed inside the body part 10.

The cover portion (20) covers the top plate (11) of the body portion (10). The cover portion 20, together with the body portion 10, forms a space for phototherapy. The cover portion 20 may include a first cover 21 and a second cover 22. The first cover 21 is detachably coupled to the front of the body 10. And the second cover 22 engages with the rear of the body 10. And the first cover 21 is rotatably coupled to the second cover 22. [ The first cover 21 includes a first lower plate 21a. The second cover 22 includes a second lower plate. The first lower plate 21a and the second lower plate 22a are made of a transparent material (for example, polycarbonate).

The first light irradiation part 30 is disposed on the lower side of the upper plate 11 of the body part 10. The first light irradiation unit 30 irradiates light toward the top plate 11 to illuminate the user lying on the top plate 11 or lying on the top plate 11. [ Therefore, the first light irradiation unit 30 irradiates light on the back side of the user when the user is lying down, and illuminates the front side of the user when the user is lying down. A reflection plate for reflecting the light reflected by the upper plate 11 or the user to the user may be provided below the first light irradiation unit 30. [

The second light irradiation part 40 is disposed on the upper side of the first lower plate 21a and the second lower plate 22a of the cover part 20, respectively. The second light irradiation unit 40 irradiates light to the user lying down or lying on the top plate 11 of the body part 10 by irradiating light toward the first lower plate 21a or the second lower plate 22a. Therefore, when the user is lying down, the second light irradiation unit 40 irradiates light on the front side and the side of the user, and irradiates light on the back side and the side of the user when the user is lying down. The first lower plate 21a or the second lower plate 22a or a reflector for reflecting the light reflected by the user back to the user may be provided under the second light irradiation unit 40. [

FIG. 4 is a view showing the first light irradiation part 30, FIG. 5 is an illustration showing the arrangement of the optical modules of the first light irradiation part 30, Fig.

Referring to FIG. 4, the first light irradiation unit 30 may include a plurality of optical modules. The optical module of the first light irradiation unit 30 and the optical module of the second light irradiation unit 40 have the same configuration and will be described with reference to FIG. 4 as an example of the first light irradiation unit 30. FIG.

The optical module of the first light irradiation unit 30 has a bar shape in which a plurality of light sources are arranged in a line along the first direction Y. Here, the first direction (Y) may correspond to a direction in which the user lies or lays down on the body portion 10. The light source may be an LED. The first light irradiation unit 30 and the second light irradiation unit 40 may each include a plurality of optical modules. The plurality of optical modules may be arranged along a second direction (X) perpendicular to the first direction (Y).

The plurality of optical modules may be divided into a first set, a second set, and a third set.

The first set includes a plurality of first optical modules 100A. The first optical module 100A includes the light source of the green wavelength band of the visible light. The second set includes a plurality of second optical modules 100B. The second optical module 100B includes a light source of a red wavelength band of visible light. The third set includes a plurality of third optical modules 100C. The third optical module 100C includes a light source of a near infrared ray wavelength range.

The visible light and near infrared ray LED light is not emitted in a single wavelength band due to ultraviolet rays or unnecessary spectrum, and has a low side effect and low energy, which is useful for the human body. When the light emitted from an LED at a specific wavelength reaches the skin, the chlorophyll of the plant produces a biochemical reaction between the cells, similar to the principle of obtaining energy by photosynthesis through sunlight. This is based on the photon of an LED light source being absorbed by chromophores or photoacceptors in cell tissue and promoting cellular metabolism.

The light of the LED absorbed by the cell increases the synthesis of mitochondrial ATP in the cell tissue, and the cells exposed to the light of the red wavelength band and the near infrared wavelength band generate NO. Light in a specific wavelength range is absorbed by photoreceptors such as cytochrome and oxidase, photodegrading the inhibitory nitric oxide (NO), promoting enzyme activation, promoting metabolism of mitochondria and ATP production do.

In the first set, the plurality of first optical modules 100A are arranged in order of wavelengths of the light sources of the green wavelength band sequentially along the second direction X. For example, when two first optical modules 100A are arranged in the first set, the first optical module 100A in the 521 nm band, the first optical module 100A in the 528 m band 100A). The first light irradiation unit 30 and the second light irradiation unit 40 may include a plurality of such first sets.

Simultaneously, in the second set, the plurality of second optical modules 100B are arranged in order of wavelengths of the light sources of the red wavelength band sequentially along the second direction X. For example, two second optical modules 100B are disposed in two sets, and the second optical module 100B in the 630 nm band, the second optical module 100B in the 631 m band, , And the second optical module 100B in the 635 nm band. The first light irradiation portion 30 and the second light irradiation portion 40 may include a plurality of such second sets.

And. Within the third set, the plurality of third optical modules 100C are arranged in order of wavelengths of the light sources in the near-infrared wavelength band sequentially along the second direction X. For example, two second optical modules 100B are arranged in three sets, and a third optical module 100C in the 850 nm band, a third optical module 100C in the 940 m band along the second direction X, Respectively. The first light irradiation unit 30 and the second light irradiation unit 40 may include a plurality of such third sets.

At this time, the first optical module 100A, the second optical module 100B, and the third optical module 100C can be alternately arranged based on the second direction X under the above arrangement condition. For example, the second optical module 100B and / or the second optical module 100B may be disposed between the first optical module 100A of the first set on the basis of the second direction X. [ The third optical modules 100C can be arranged.

Referring to FIGS. 4 and 6, the optical module may include a base 110, a substrate 120, and a light source 130. The base 110 serves to fix the substrate 120 to the body 10 or the cover 20. The base 110 has a cross-sectional shape of a " C " shape. The base 110 may be made of an aluminum material. The base 110 includes a bottom portion 111 and a side portion 112. The side portions 112 are disposed on both sides of the bottom portion 111 and are disposed perpendicularly to the bottom portion 111. The bottom portion 111 and the side portion 112 form an accommodation space for accommodating the substrate 120 inside.

A groove 112a is disposed on the inner wall of the side portion 112 and an edge of the substrate 120 is inserted into the groove 112a so that the substrate 120 can be coupled to the side portion 112. A light source 130 is mounted on the substrate 120. The substrate 120 is long, and the plurality of light sources 130 are arranged in a line along the first direction Y. At this time, the substrate 120 and the bottom portion 111 are spaced apart to form the first heat convection space S1. The first heat convection space S1 is elongated along the first direction Y. [ Heat generated in the light source 130 is discharged through the first heat convection space S1.

Adjacent optical modules are spaced apart from each other in the second direction (X). A second heat convection space S2 is formed between the side portion 112 and the side portion 112 of the base 110 of the adjacent optical module. The second heat convection space S2 is elongated along the first direction Y. [ Heat generated in the light source 130 is further escaped through the second heat convection space S2.

The configuration of the first light irradiation unit 30 and the second light irradiation unit 40 is a configuration that greatly enhances the heat generating effect under the condition that a plurality of LED light sources 130 are disposed.

7 is a side view showing the first lower plate 21a and the second lower plate 22a of the cover portion 20, and Fig. 8 is a side view showing a state in which the cover portion 20 is opened.

Referring to FIG. 7, the curvature radius R1 of the first lower plate 21a and the curvature radius R2 of the second lower plate 22a may be the same. This is because the cover part (20) is covered with the body part (10). The light from the second light irradiation unit 40 disposed on the first cover 21 and the light from the second light irradiation unit 40 disposed on the second cover 22 are uniformly irradiated onto the user's entire body.

Referring to FIG. 8, the first cover 21 is rotatably connected to the second cover 22. When the cover portion 20 is opened, the second cover 22 is fixed to the body portion 10, and the first cover 21 is rotated based on the second cover 22. Only the first cover 21 is pivoted so that there is an advantage that convenience is secured when the user opens the cover portion 20 and lays down on the body portion 10 while ensuring the same space as S3 of Fig.8 .

Fig. 9 is a view showing an opening assisting device, and Fig. 10 is a view showing an operating state of the opening assisting device when the cover portion 20 is opened.

Referring to Fig. 9, the opening assisting device is a device for assisting opening of the cover portion 20. Fig. The cover portion 20 has a heavy weight of about 70 kg. When the cover portion 20 is opened, considerable force of the user is required. The opening assisting device assists the force in the direction in which the cover portion 20 is opened, thereby enhancing convenience for the user.

The opening assistance device may include a tension coil spring 210, a pulley 220, and a wire 230. The tension coil spring 210 may be disposed on the body portion 10 such that the longitudinal direction thereof is aligned with the second direction X. [ The body portion 10 is provided with a coupling ring 211 and the tension coil spring 210 can be connected to the coupling ring 211. The pulley 220 may be disposed inside the body portion 10 or inside the cover portion 20. A plurality of pulleys 220 may be disposed. One end of the wire 230 is fixed to the first cover 21 of the cover portion 20 and the other end is connected to the tension coil spring 210. And the wire 230 is wound around the pulley 220 and guided.

When the cover portion 20 is fixed to the body portion 10 with the cover portion 20 covered by the body portion 10, the wire 230 is pulled toward the front of the body portion 10, (230). The tension coil spring 210 has a restoring force in a state in which the length L is elongated.

10, when the user starts to open the cover part 20, the length L of the tension coil spring 210 is expanded and contracted by the restoring force of the tension coil spring 210. Thus, the wire 230 is pulled, and a force is applied in a direction in which the cover portion 20 is opened. Therefore, the user can easily open the cover portion 20 of a heavy load with a small force. Such an opening assisting device assists the opening of the cover portion 20 only by the restoring force of the tension coil spring 210 without a separate power source, so there is an advantage that the manufacturing cost can be greatly reduced and the structure can be simplified.

11 is a view showing a control panel.

Referring to FIG. 11, the control panel 70 may be disposed on the inner surface of the second cover 22 of the cover portion 20. The control panel 70 is connected to a control unit for controlling the operation of the LED system therapy apparatus. The user can touch the control panel 70 to control the operation of the LED body therapy apparatus while lying on the body portion 10. [

12 is a view showing the ventilation device.

Referring to FIGS. 2 and 12, the body 10 and the cover 20 may include a ventilator 50. The sweep device can be a motor-driven fan. The ventilator 50 can communicate with the interior of the body 10, the interior of the cover 20, or the space in which the user is located. In particular, the ventilator may be arranged to communicate with the first heat convection space S1 and the second heat convection space S2 shown in Fig.

 The ventilator 50 may be disposed on both sides 12 of the body 10, respectively. A plurality of ventilation devices 50 may be disposed. A plurality of ventilation devices (50) may be disposed on the cover part (20). The ventilator 50 serves to discharge the heat generated from the first light irradiation unit 30 or the second light irradiation unit 40 to the outside.

2, the side plate 13 may be disposed on an upper portion of one side of the body 10. [ The side plate 13 is arranged to face the user's foot when the user lies or falls on the body 10. The side where the user's feet are located is closed by the side plate 13, and the side where the user's head is located is open. The side plate 13 may be provided with an infrared lamp 60. The infrared lamp 60 serves to keep the temperature of the user's foot warm.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an LED system therapy apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As described above, the toe-plate ladder vibration reduction device according to one preferred embodiment of the present invention has been specifically described with reference to the accompanying drawings.

It is to be understood that one embodiment of the invention described above is to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

10:
11; Top plate
20:
21: first cover
21a: first bottom plate
22: second cover
22a: second bottom plate
30: First light irradiation unit
40: second light irradiation part
50: Ventilation device
100A: a first optical module unit
100B: second optical module section
100C: third optical module section
110: Base
120: substrate
130: Light source
200: open auxiliary device
210: Tension coil spring
220: pulley
230: wire

Claims (6)

A body portion 10 including an upper plate 11 on which a user is positioned;
A cover part 20 coupled to the body part 10 to cover the upper plate 11;
A first light irradiating unit 30 disposed on the body 10 for irradiating light from the lower side of the upper plate 11 toward the upper plate 11,
And a second light irradiation part (40) arranged on the cover part (20) and irradiating light toward the upper plate (11)
The first light irradiation unit 30 and the second light irradiation unit include a plurality of optical modules in the form of a bar in which a plurality of light sources 130 are arranged in a row along a first direction Y,
The plurality of optical modules are arranged along a second direction (X) perpendicular to the first direction (Y), and are divided into a first set, a second set and a third set,
The first set includes a plurality of first optical modules (100A) including a green wavelength band light source of a visible light ray and sequentially arranged along the second direction (X) in order of wavelength of the green wavelength band light source ,
The second set includes a plurality of second optical modules (100B) including a red wavelength band light source of a visible light ray and sequentially arranged along the second direction (X) in order of wavelength of the red wavelength band light source and,
The third set includes a plurality of third optical modules (100C) including a near-infrared wavelength band light source and sequentially arranged along the second direction (X) in order of wavelengths of the near-infrared wavelength band light sources,
The optical module includes:
The base 110 and /
A substrate 120 coupled to the base 110 and having the light source 130 mounted thereon,
The base 110 includes a bottom portion 111 and side portions 112 disposed on both sides of the bottom portion 111 and has a sectional shape of " Forming a receiving space,
The substrate 120 is arranged long along the receiving space of the side portion 112, a plurality of light sources are arranged in a line along the first direction Y,
The bottom portion 111 and the substrate 120 are spaced apart to form a first heat convection space S1 and the first heat convection space S1 is formed to be long along the first direction Y The heat generated in the light sources is discharged through the first heat convection space S1,
The space between the side portions and the side portions of the plurality of optical modules adjacent to each other is spaced apart to form a second heat convection space S2 and the second heat convection space S2 is formed in the first direction Y, So that the generated heat is additionally discharged through the second heat convection space S2,
The cover portion (20)
A first cover 21 detachably coupled to a front surface of the body 10;
And a second cover (22) coupled to a rear surface of the body part (10) and hinged to the first cover (21)
The first cover 21 includes a first lower plate 21a covering the second light irradiation part 40 and only the first cover 21 is rotated on the basis of the second cover 22, Thereby ensuring the convenience of lying on the body portion 10,
The second cover (22) includes a second lower plate (22a) covering the second light irradiation part (40)
The radius of curvature of the first lower plate 21a and the radius of curvature of the second lower plate 22a are the same so that light from the second light irradiating unit 40 is uniformly irradiated onto the entire body of the user,
And an opening assisting device for assisting opening and closing of the cover portion (20)
The opening assistance device comprises:
A tension coil spring 210 disposed on the body 10;
A pulley 220 rotatably disposed on at least one of the body 10 and the cover 20; And
And a wire (230) connecting the tension coil spring (210) and the cover part (20) across the pulley (220)
When the cover part 20 covers the body part 10 and is fixed to the body part 10, the tension coil spring 210 is stretched by the wire 230 so as to have a restoring force , Which increases the convenience of opening and closing the cover part (20) of the user by assisting the force in the direction of opening the cover part (20) without a separate power source. The method according to claim 1,
Wherein at least two of the first optical module (100A), the second optical module (100B) and the third optical module (100C) are alternately arranged along the second direction (X). delete delete delete delete

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