Lighting device for inspecting exterior of vehicle and system for inspecting exterior of vehicle by using same

Abstract

The present invention relates to a lighting device for inspecting the exterior of a vehicle, which inspects a surface defect of the exterior of a vehicle by irradiating the exterior of the vehicle, with light, the lighting device comprising: a housing; a lighting part accommodated in the housing; and a cover part provided to cover the lighting part, wherein the cover part comprises: a base; a light transmitting area formed to penetrate the base, and allowing light to pass through the area while forming a set pattern; and a blocking area provided in the base and preventing light from passing through areas other than the light transmitting area. According to the present invention having the above configuration, the light radiated to the surface of the vehicle is concentrated, while the thickness of a passing area is formed to be 5 to 10 mm, thereby increasing the clarity of a distortion pattern on the surface of the vehicle and saving energy.

Description

Lighting device for vehicle exterior inspection and vehicle exterior inspection system using the same

[0001] The present invention relates to a lighting device for inspecting the exterior of a vehicle and a vehicle exterior inspection system using the same, and more specifically, to a lighting device for inspecting the exterior of a vehicle by irradiating light onto the exterior of the vehicle and inspecting the shape of the exterior of the vehicle and the condition of the paintwork for defects through a light distortion phenomenon, and to a vehicle exterior inspection system using the same.

[0002] Typically, vehicles undergo an inspection process during the production process to check for defects such as dents or scratches on the paint surface of the vehicle body. As part of the inspection process, light can be optically illuminated on the vehicle body surface to check for patterns resulting from light distortion with the naked eye or equipment.

[0003] The light irradiated onto the surface of the vehicle body is irradiated through a lighting device. In this case, a single lighting device can be installed on one side of the vehicle body, and it is also possible to install the lighting device in a tunnel shape to surround the vehicle body.

[0004] As a prior art related to this, a vehicle surface quality inspection system is disclosed in Korean Patent No. 10-2495502, and the above prior art shows a structure in which a lighting device is placed in a tunnel shape and then light is irradiated onto the vehicle surface while the vehicle is moved.

[0005] However, the lighting device applied to the above prior art has a problem in that light scattering occurs as the light source, such as an incandescent bulb, fluorescent lamp, or LED, is directly exposed toward the vehicle body, and the precision of the distortion pattern of the light reflected from the vehicle body is low.

[0006] More specifically, FIG. 1 shows a conventional lighting device including the above prior art (a) and a state (b) in which a distortion pattern of light is formed when light is irradiated onto a vehicle body through the above lighting device. As shown in (a) of FIG. 1, light from a lamp or the like is diffused to the surroundings, and as shown in (b) of FIG. 1, in order to increase the clarity of the distortion pattern on the vehicle body, not only must the lamp be maintained at a high illuminance, but also the precision of the distortion pattern is low, making it difficult to perform more precise surface inspection.

[0007] [Prior Art Literature]

[0008] Republic of Korea Patent No. 10-2495502 (Registration date: January 31, 2023)

[0009] The purpose of the present invention, which was invented in consideration of the above points, is to provide a lighting device for vehicle exterior inspection, which can perform vehicle inspection more easily and accurately by improving the structure of the lighting device to enhance the clarity and precision of the distortion pattern on the surface of the vehicle body, and a vehicle exterior inspection system using the same.

[0010] In addition, an object of the present invention is to provide a lighting device for vehicle exterior inspection that can save energy while maintaining the same clarity by concentrating light irradiated from a light source, and a vehicle exterior inspection system using the same.

[0011] According to one embodiment of the present invention for achieving the above object, a vehicle exterior inspection lighting device is provided for inspecting surface defects of the vehicle exterior by irradiating light onto the vehicle exterior, the vehicle exterior inspection lighting device comprising: a housing; a lighting unit accommodated inside the housing; and a cover unit provided to cover the lighting unit, wherein the cover unit comprises: a base; a light-transmitting area formed through the base with a predetermined width (T) and a thickness (D) greater than a predetermined size and configured to allow light to pass through while forming a set pattern; and a blocking area provided on the base and preventing light from passing through an area other than the light-transmitting area.

[0012] The above-mentioned light-emitting area can be set to a thickness such that more than half of the light emitted from the above-mentioned light-emitting area is irradiated onto the exterior of the vehicle up to an identification viewing angle (θr) at which the symbol can be identified.

[0013] The above-mentioned light-transmitting area can be formed with a thickness of 3 mm or more and T / {2·tan(θr)} or less.

[0014] Additionally, the light-transmitting area may have a thickness of 5 mm to 10 mm.

[0015] In addition, the base may further include a blocking member provided at the upper and / or lower portion of the blocking area and having an opening formed to correspond to the light-transmitting area.

[0016] Additionally, the blocking member may have a surface forming the opening that is perpendicular to the base.

[0017] Additionally, the blocking member and the base may be formed of different materials.

[0018] Additionally, the thickness of the blocking area may be smaller than the thickness of the light-transmitting area.

[0019] In addition, the lighting unit is provided with a plurality of light-emitting bodies, and the plurality of light-emitting bodies are arranged to correspond to the light-transmitting area so as to irradiate light to the outside through the light-transmitting area.

[0020] In addition, the device further includes a control unit that controls the plurality of light-emitting bodies, and the control unit controls the illuminance or color temperature of each of the plurality of light-emitting bodies, and some of the plurality of light-emitting bodies have an illuminance or color temperature of a first value, and the remainder of the plurality of light-emitting bodies have an illuminance or color temperature of a second value, and the first value and the second value may be different values.

[0021] A vehicle exterior inspection system according to one embodiment of the present invention for achieving the above object comprises a plurality of vehicle exterior inspection lighting devices, wherein the plurality of vehicle exterior inspection lighting devices are installed in the form of a tunnel to surround the side and top of the vehicle, and are characterized in that they are arranged in a plurality of rows from the entrance to the exit of the tunnel.

[0022] According to one embodiment of the present invention, since light emitted from a light-emitting body is concentrated through a cover portion, the clarity of the distortion pattern on the surface of the vehicle body is increased, and further, the precision and ease of vehicle exterior inspection are improved.

[0023] Additionally, it has the advantage of saving energy because high clarity is maintained even without increasing the illuminance by concentrating the light.

[0024] In addition, since light sources with different illuminance or color temperature values ​​are mixed and used, there is an advantage in that the degree of illumination can be adjusted according to the color of the vehicle, the work environment, the condition of the worker, etc., thereby improving workability.

[0025] Figure 1 is a diagram showing a conventional vehicle exterior inspection lighting device and its usage state.

[0026] Figure 2 is a usage diagram showing a lighting device for vehicle exterior inspection and its usage mode according to one embodiment of the present invention.

[0027] Figure 3 is a usage diagram showing a vehicle exterior inspection system according to one embodiment of the present invention.

[0028] Figure 4 is a perspective view showing a lighting device according to one embodiment of the present invention.

[0029] Fig. 5 is an exploded perspective view showing a disassembled state of a lighting device according to one embodiment of the present invention.

[0030] Figure 6 is a front and back perspective view showing the upper and lower surfaces of a cover portion according to one embodiment of the present invention.

[0031] Figure 7 is a detailed diagram showing a light-transmitting area and a blocking area according to one embodiment of the present invention.

[0032] Figure 8 is a drawing measuring the illuminance of reflected light according to the thickness of the cover part.

[0033] Figure 9 is a diagram showing the general human field of view.

[0034] Figure 10 is a drawing for explaining the principle of setting the thickness of the light-transmitting area by considering the inspector's identification field of view.

[0035] Fig. 11 is a usage state diagram showing the irradiation state of a light emitting unit according to vehicle color according to one embodiment of the present invention.

[0036] Since the embodiments of the present invention are susceptible to various modifications and may take various forms, specific embodiments are illustrated in the drawings and described in detail in the specification of the present invention. However, the embodiments are not intended to be limited to specific disclosed forms, and should be understood to encompass modifications, equivalents, and alternatives that fall within the technical spirit and scope of the present invention.

[0037]

[0038] Hereinafter, the present invention will be described in detail.

[0039] FIG. 2 is a usage diagram showing a vehicle exterior inspection lighting device and its usage mode according to one embodiment of the present invention, and FIG. 3 is a usage diagram showing a vehicle exterior inspection system according to one embodiment of the present invention.

[0040] Referring to FIGS. 2 and 3, the vehicle exterior inspection lighting device (L) according to the present invention is for inspecting surface defects of the vehicle exterior by irradiating light onto the vehicle exterior, and may be installed to irradiate light onto one side of the vehicle body, or may be installed in multiple numbers to surround the side and upper portion of the vehicle body in a tunnel shape.

[0041] As shown in Fig. 3, lighting devices (L) installed to surround the sides and upper portion of the vehicle body are arranged in a single row in the width direction, that is, from one side of the tunnel to the other side, and at the same time, multiple rows can be arranged from the entrance to the exit of the tunnel.

[0042] The number and arrangement of the lighting devices (L) forming the above row can be adjusted according to the inner shape of the tunnel and the type of vehicle body requiring inspection, and also, the number and interval of the rows arranged from the entrance to the exit of the tunnel can be adjusted according to the size of the lighting devices (L) and the scale of the tunnel.

[0043] In addition, the lighting device (L) of the present invention is not limited to the field of application to the exterior inspection of a vehicle, but can also be configured to be applied to the exterior inspection of home appliances such as air conditioners, refrigerators, and washing machines, and to inspect the shape and paint condition of the exterior.

[0044] However, for the convenience of explanation, the following description will be given as an example of a case where the lighting device (L) of the present invention is applied to the exterior inspection of a vehicle.

[0045]

[0046] Fig. 4 is a perspective view showing a lighting device according to one embodiment of the present invention, and Fig. 5 is an exploded perspective view showing an exploded state of the lighting device according to one embodiment of the present invention.

[0047] Referring to FIG. 4, the lighting device (L) in the present invention is formed to have a rectangular parallelepiped shape, but the lighting device (L) is not limited to a rectangular parallelepiped shape, and may be formed in an arc shape, for example. The lighting device (L) formed in an arc shape may be formed as a curved surface with the same curvature on the upper and lower surfaces, so that the entire device has an arc shape, for example, a tile shape, or the upper surface may be flat and the lower surface may be formed as a curved surface, so that the entire device has a concave shape upward.

[0048] The lighting device (L) of the present invention having the above arc shape has an advantage in that the level of light irradiated downward is uniform as the irradiation surface (lower surface) has a curved surface corresponding to the inner surface of the tunnel, and further, since the curves of adjacent lighting devices (L) are continuous, there is an advantage in that the gap where light is cut off at the boundary where adjacent lighting devices (L) touch each other can be minimized or eliminated.

[0049] Referring to FIG. 5, a lighting device (L) according to the present invention includes a housing (100), a lighting unit (200) accommodated inside the housing (100), and a cover unit (400) provided to cover the lighting unit (200).

[0050] The housing (100) has an open bottom and a space is formed inside to accommodate a lighting unit (200). A fixing means for fixing the lighting device (L) to a set position may be provided inside or outside the housing (100). The fixing means may have a structure in which a hole is formed to allow a bolt or pin to be coupled, or in which a separate coupling member is fixed.

[0051] A lighting unit (200) is accommodated inside the housing (100), and the lighting unit (200) includes a plurality of light-emitting elements. The light-emitting elements may be composed of LEDs, and in one embodiment, the lighting unit (200) has a structure in which a plurality of LEDs are installed on a substrate at regular intervals, and the LEDs may use a combination of Cool White LEDs and Warm White LEDs, and color temperature control is possible based on this. In addition, those capable of changing colors through methods such as RGB or RGBW may be used.

[0052] It goes without saying that the above light emitting diode can be applied to various lamps such as incandescent bulbs, fluorescent lamps, and halogen lamps in addition to LEDs, and in this case, it is desirable that the color temperature and illuminance be changeable.

[0053] FIG. 6 is a front and back perspective view showing the upper and lower surfaces of a cover portion (400) according to one embodiment of the present invention, and FIG. 7 is a detailed view showing a light transmitting area (T) and a blocking area (N) according to one embodiment of the present invention.

[0054] Referring to FIGS. 6 and 7, the cover portion (400) includes a base (410), a light-transmitting area (T) formed through the base (410) and forming a set pattern so that light passes through, and a blocking area (N) provided on the base (410) that prevents light from passing through areas other than the light-transmitting area (T).

[0055] The above base (410) is configured to cover an opening formed in the housing (100), and light irradiated from the lighting unit (200) passes through the cover unit (400) and is irradiated to the vehicle body.

[0056] Referring to Fig. 7, the cover portion (400) includes a light-transmitting area (T) and a blocking area (N). The light-transmitting area (T) is defined as an area through which light passes, and the blocking area (N) is defined as an area through which light does not pass.

[0057] The light-transmitting area (T) is formed by penetrating a portion of the base (410), and a material that transmits light, such as glass, may be additionally combined in the light-transmitting area (T) to prevent foreign substances from entering the housing (100).

[0058] In the drawing of the present invention, the light-transmitting area (T) may be arranged in a stripe arrangement by forming a plurality of slits spaced at regular intervals. The stripe arrangement may be arranged in the width direction of the tunnel, in the direction from the entrance to the exit of the tunnel, or in a diagonal direction.

[0059] The above stripe arrangement appears to be optimized for identifying surface defects through the vehicle's surface distortion pattern as shown in Fig. 2. However, it is also conceivable that the pattern of the light-transmitting area (T) may be applied in various shapes, such as bend lines, curves, or circles, in addition to stripes, depending on the shape of the vehicle, etc.

[0060] In one embodiment of the present invention, it is preferable that the light-transmitting area (T) be configured to have a thickness within a predetermined range that maximizes the clarity and / or illuminance of light irradiated from the lighting unit (200).

[0061] In particular, the clarity of the light emitted from the lighting unit (200) may be affected by the lower limit of a predetermined range of the thickness of the light-transmitting area (T), and the illuminance may be affected by the upper limit of the predetermined range.

[0062] Fig. 8 is a drawing measuring the illuminance of reflected light according to the thickness of the cover portion, and in detail, Figs. 8(a) to 8(c) are drawings measuring the illuminance of reflected light of the subject (500), i.e., the vehicle body, according to the horizontal position of a specific point when the thickness (D) of the light-transmitting area is 1 mm, 3 mm, and 5 mm, respectively.

[0063] The clarity of the reflected light irradiated from the lighting unit (200) to the vehicle body can be determined by the black level in the blocking area of ​​the reflected light and the width of the blocking area. That is, the clarity of the reflected light irradiated from the lighting unit (200) to the vehicle body is improved when the black level in the blocking area of ​​the reflected light is low and the width of the blocking area is wide, because the blocking area is clearly visible.

[0064] Referring to Fig. 8, when the thickness (D) of the light-transmitting area is 1 mm (Fig. 8(a)), the black level of the black area created by the blocking area is approximately 90, when the thickness (D) of the light-transmitting area is 3 mm (Fig. 8(b)), the black level of the black area is approximately in the early 80s, and when the thickness (D) of the light-transmitting area is 5 mm (Fig. 8(c)), the black level of the black area is approximately 70.

[0065] In addition, in terms of the width of the black area, the width of the black area when the thickness (D) of the light-transmitting area is 5 mm (Fig. 8(c)) is much wider than the width of the black area when the thickness (D) of the light-transmitting area is 1 mm and 3 mm (Figs. 8(a), 8(b)), so it can be said that the expressiveness of the black area is good.

[0066] Based on this, it can be seen that the reflected light irradiated from the lighting unit (200) to the body shows improvement in clarity when the thickness (D) of the light-transmitting area is 3 mm or more, and the degree of improvement becomes more pronounced when the thickness (D) of the light-transmitting area is 5 mm or more. Therefore, the lower limit of the predetermined range of the thickness (D) of the light-transmitting area is 3 mm or more, and more preferably, it can be set to 4 mm or 5 mm.

[0067] External inspection can be performed not only by an image processing device such as a camera, but also by a human inspector. In this case, the upper limit of the predetermined range of the thickness (D) of the light-transmitting area of ​​the cover portion (400) can be set by considering the illuminance of reflected light within an appropriate field of view for the inspection performed by the inspector.

[0068]

[0069] Figure 9 is a drawing showing a general human field of view, and Figure 10 is a drawing explaining the principle of setting the thickness of the light-transmitting area by considering the inspector's identification field of view.

[0070] Referring to Figure 9, it can be seen that the human field of vision can be ±94 to 110°, but the field of vision for distinguishing colors (±30°), identifying symbols (±20°), and reading letters (±30°) is formed much narrower than that.

[0071] Accordingly, the lighting device (L) of the present invention can determine an upper limit value of a predetermined range of the thickness (D) of the light-transmitting area so that light of a predetermined illuminance or higher is irradiated from the lighting unit (200) to a viewing angle (hereinafter referred to as “identification viewing angle (θr)”) capable of identifying a symbol within ±20°.

[0072] That is, the thickness (D) of the light-transmitting area can be determined to have an upper limit such that the illuminance of the reflected light that enters the eye of the inspector after being irradiated on the subject (500) from the light-transmitting area (T) within an identification field of view (θr) of ±20° is at least 1 / 2 of the light emitted from the light-transmitting area (T).

[0073] Referring to Fig. 10, the illuminance and viewing angle of the reflected light irradiated on the test object (500) in the light-transmitting area (T) vary depending on the thickness of the light-transmitting area. In other words, as the thickness of the light-transmitting area increases, the illuminance of the reflected light reaching the examiner's eyes at the same viewing angle decreases, and under the same illuminance condition of the reflected light, the viewing angle reaching the examiner's eyes narrows.

[0074] Accordingly, it is preferable that the thickness of the light-transmitting area of ​​the present invention be set so that more than half of the light emitted from the light-transmitting area (T) at the identification viewing angle (θr) enters the inspector's eyes.

[0075] Referring to Fig. 10, in order for the illuminance of the reflected light entering the inspector's eye to be at least 1 / 2 of the illuminance in the light-transmitting area (T) over the entire range of the identification viewing angle (θr), the thickness in the light-transmitting area must be less than or equal to (width of the light-transmitting area) / {2·tan(θr)}, i.e., T / {2·tan(θr)}.

[0076] Therefore, the upper limit of the predetermined range of the thickness of the light-transmitting area can be set to T / {2·tan(θr)}.

[0077] For example, when the identification viewing angle (θr) is 20° and the width (T) of the light-transmitting area is 10 mm, the upper limit of the predetermined range of the thickness of the light-transmitting area may be approximately 13.7 mm, and when the width (T) of the light-transmitting area is 20 mm, the upper limit of the predetermined range of the thickness of the light-transmitting area may be approximately 27.5 mm.

[0078] In summary of the above, the thickness of the light-transmitting area can be determined within a range of 3 mm or more and T / {2·tan(θr)} or less, and preferably, can be determined within a range of 4 mm or 5 mm or more and T / {2·tan(θr)} or less.

[0079] In addition, under the condition that the width (T) of the light-transmitting area is 10 mm and covers an identification viewing angle (θr) of ±20° to conduct an appearance inspection, the thickness of the light-transmitting area can be determined within a range of 3 mm or more and 13.7 mm or less, and preferably, can be determined within a range of 4 mm or 5 mm or more and 13.7 mm or less.

[0080] In addition, under the condition that the width (T) of the light-transmitting area is 20 mm and covers an identification viewing angle (θr) of ±20° to conduct an appearance inspection, the thickness of the light-transmitting area can be determined within a range of 3 mm or more and 27.5 mm or less, and preferably, can be determined within a range of 4 mm or 5 mm or more and 27.5 mm or less.

[0081] When conducting an appearance inspection, if the field of view to be covered is set narrower than the identification field of view (θr), the upper limit of the range that the thickness of the light-transmitting area can have can be determined higher.

[0082] As explained above, the thickness of the light-emitting area can be determined in various ranges, but for the convenience of explanation, in the following, the case where the thickness of the light-emitting area is 5 mm or more and 10 mm or less will be explained as an example under the condition that the clarity and illuminance of the reflected light irradiated and reflected from the lighting unit to the vehicle body can be secured to a certain level or higher.

[0083]

[0084] The light-transmitting area may have a thickness (D) of 5 mm to 10 mm as exemplified above. That is, the light irradiated from the lighting unit (200) is irradiated to the outside through the light-transmitting area (T), and straightness is secured according to the thickness (D) of the light-transmitting area (T) of 5 mm to 10 mm.

[0085] As a result of the experiment of the present invention, when the thickness (D) of the light-transmitting area (T) is less than 5 mm, the clarity of the distortion pattern on the vehicle surface is reduced due to the light spreading phenomenon caused by the diffraction of light, and when the thickness of the light-transmitting area (T) is greater than 10 mm, not only is a portion of the light emitted from the light-transmitting area blocked depending on the viewing angle during inspection, but also the illuminance is reduced, and in a state where the influence of the light diffraction is the same, the size of the housing (100) becomes unnecessarily large, and a problem of contact with the components accommodated inside may occur.

[0086] In one embodiment, the base (410) may be formed to have a thickness of 5 mm to 10 mm to secure the thickness (D) of the light-transmitting area (T). In this case, the light-transmitting area (T) may secure the above thickness (D) by simply perforating the base (410).

[0087] Meanwhile, when the thickness of the base (410) itself is formed to be within the thickness range of the above light-transmitting area, the unit price increases and the self-weight of the lighting device (L) increases, which causes a problem. In the present invention, various embodiments are described below to solve the problem of increasing the unit price or self-weight while securing the above thickness range.

[0088]

[0089] In one embodiment of the present invention, the base (410) may further include a blocking member (420) provided at the upper and / or lower portion of the blocking area (N) and having an opening formed to correspond to the light-transmitting area (T) and expanding the thickness of the light-transmitting area (T). In this case, the thickness of the blocking area (N) may be smaller than the thickness of the light-transmitting area (T).

[0090] In addition, the blocking member (420) can be implemented by bending a plate-shaped member, for example, a metal plate, and if the thickness (D) in the light-transmitting area (T) can be secured, it is also possible to configure the cover part (400) with only the blocking member (420) without the base (410).

[0091] FIG. 6 (a) shows the bottom surface, i.e., the back view, of the cover part (400), and FIG. 6 (b) shows the top surface, i.e., the front view, of the cover part (400). As shown in FIG. 6, the blocking member (420) may be formed in the shape of a wing extending above the light-transmitting area (T). The blocking member (420) forms the light-transmitting area (T) together with the through-hole formed in the base (410) along with the inner surface of the opening, and the portion of the blocking member (420) other than the opening forms the blocking area (N) together with the portion of the base (410) other than the through-hole. It is preferable that the inner surface thickness of the opening of the blocking member (420), i.e., the sum of the upper and lower heights and the thickness of the base (410), has a value of 5 mm to 10 mm.

[0092] In addition, when the blocking member (420) is provided at the lower part of the blocking area (N) or when the blocking member (420) is provided at both the upper and lower parts of the blocking area (N), it is preferable that the combined thickness of the base (410) and the thickness of the blocking member (420) have a value of 5 mm to 10 mm.

[0093] In one embodiment of the present invention, a plurality of light-emitting elements provided in the lighting unit (200) may be arranged to correspond to the opening and may be exposed to the outside through the opening. For example, if the light-transmitting area (T) has a stripe shape, the opening of the blocking member (420) may have a stripe shape to correspond to the stripe shape, and a plurality of light-emitting elements may be positioned above the opening to correspond to the stripe shape. In addition, in another embodiment, a plurality of light-emitting elements provided in the lighting unit (200) may be arranged so that the spacing above the opening corresponding to the opening is narrower than the spacing above the blocking area corresponding to the blocking area. That is, the light-emitting elements may be arranged more densely above the light-transmitting area. The above cases have the advantage of minimizing light loss because the irradiation direction of the light irradiated from the light-emitting elements is directly directed to the opening.

[0094] The manufacturing of the blocking member (420) can be done in various ways, but it is preferable to avoid burring or cutting the base (410) and then bending it, as the lower part of the light-transmitting area (T) forms a curved surface, and light moves along the curved surface of the lower part, causing light scattering.

[0095] Considering this, in one embodiment of the present invention, it is preferable that the surface forming the opening of the blocking member (420) is perpendicular to the base (410).

[0096] In one embodiment, the blocking member (420) may be formed by die casting the base (410) so that the surface forming the opening is formed vertically from the base (410).

[0097] Referring to FIG. 7, in another embodiment, the blocking member (420) may be configured as a separate member that is coupled to the upper surface of the base (410). For example, the blocking member (420) may be separately manufactured from plastic, synthetic resin, or other metal in consideration of processability, and may be coupled to the upper surface of the base (410) after manufacturing.

[0098] By forming the base (410) and the blocking member (420) with different materials, the processability of the blocking member (420) can be improved or the manufacturing cost can be reduced, and it is easier to form the opening surface of the blocking member (420) perpendicular to the base (410).

[0099] In addition, the inner surface of the blocking area (N) may be formed of a material that reflects light, or a reflective material (430) that reflects light may be additionally provided. Since the inner surface of the blocking area (N) reflects the light irradiated from the light-emitting body, absorption or reduction of light can be prevented through retroreflection. In addition, in one embodiment, a reflective member may be provided between the light-emitting bodies in the lighting unit (200) or on the upper surface of the lighting unit (200) so that light is reflected.

[0100]

[0101] Meanwhile, referring again to FIG. 3, in one embodiment of the present invention, a diffusion part (300) may be provided between the lighting part (200) and the cover part (400), and the diffusion part (300) diffuses the light irradiated from the lighting part (200). This is to disperse the light irradiated from a plurality of light-emitting bodies and evenly irradiate the light through a plurality of light-transmitting areas (T).

[0102] In the drawing of the present invention, the diffusion part (300) is illustrated as being flat, but the diffusion part (300) may have a slope or curved surface so that light is focused on the light-transmitting area (T). For example, the diffusion part (300) may be formed so that the height at the top of the light-transmitting area (T) is higher than the height at the top of the blocking area (N), and may have a shape in which valleys and peaks are repeated throughout. In this case, the valley that is concave upwards is located above the light-transmitting area (T), and the peak that is convex downwards is located above the blocking area (N). Accordingly, light passing through the diffusion part (300) can be focused on the light-transmitting area (T), and along with the reflection of the blocking area (N), light loss is further reduced, thereby saving energy and improving clarity.

[0103] Fig. 11 is a usage diagram showing the irradiation status of a light emitting unit according to vehicle color according to one embodiment of the present invention. One embodiment of the present invention may further include a control unit for controlling a plurality of light emitting elements. The control unit controls the illuminance or color temperature of each of the plurality of light emitting elements.

[0104] The above control unit can adjust the brightness or color temperature of the light source according to the user's operation, or can input information about the color of the vehicle and adjust the brightness or color temperature of the light source according to an algorithm set based on the input information.

[0105] In the present invention, some of the light-emitting bodies have a first value of illuminance or color temperature, and the remaining of the plurality of light-emitting bodies have a second value of illuminance or color temperature, and the first value and the second value may be different values.

[0106] For example, multiple light sources may operate at a power rate of 100 W, and some of the multiple light sources may have a color temperature of 6500 K and others may have a color temperature of 4200 K. In this case, the light ultimately emitted has a color temperature of approximately 5600 K, and since color temperatures with different wavelengths are mixed and applied, the color rendering is improved.

[0107] The control unit can control the light emitting elements so that the light emitting elements having different color temperatures are arranged alternately in the width and length directions, and in the case of illuminance, the above color temperature control method can be applied to reduce eye fatigue of the worker or improve workability.

[0108]

[0109] As described above, the vehicle exterior inspection lighting device (L) of the present invention and the vehicle exterior inspection system using the same have the advantage of concentrating light irradiated onto the surface of the vehicle and saving energy by forming the thickness of the passage area to be 5 to 10 mm, thereby increasing the clarity of the vehicle surface distortion pattern.

[0110] [Explanation of symbols]

[0111] L: Lighting device T: Projected area N: Blocked area

[0112] θr: identification field of view

[0113] 100: Housing

[0114] 200: Lighting Department

[0115] 300: Diffusion section

[0116] 400: Cover

[0117] 410: Base 420: Blocking material 430: Reflective material

[0118] 500: Test subject (body)

Claims

1. In a vehicle exterior inspection lighting device that inspects surface defects on the vehicle exterior by irradiating light on the vehicle exterior, housing; A lighting unit accommodated inside the housing; and Including a cover part provided to cover the above lighting part; The above cover part, base; A light-transmitting area formed through the base with a predetermined width (T) and a thickness (D) greater than a predetermined size and configured to allow light to pass through while forming a set pattern; and A vehicle exterior inspection lighting device characterized by including a blocking area provided on the base and preventing light from passing through an area other than the light-transmitting area.

2. In paragraph 1, A vehicle exterior inspection lighting device characterized in that the projection area is set to a thickness such that more than half of the light emitted from the projection area is irradiated onto the vehicle exterior up to an identification viewing angle (θr) capable of identifying a symbol.

3. In paragraph 2, A vehicle exterior inspection lighting device characterized in that the above-mentioned light-emitting area is formed with a thickness of 3 mm or more and T / {2·tan(θr)} or less.

4. In paragraph 3, A vehicle exterior inspection lighting device characterized in that the above-mentioned light-emitting area has a thickness of 5 mm to 10 mm.

5. In paragraph 1, A vehicle exterior inspection lighting device characterized in that it further includes a blocking member provided at the upper and / or lower portion of the blocking area in the base and having an opening formed to correspond to the light-transmitting area.

6. In paragraph 5, A vehicle exterior inspection lighting device characterized in that the surface forming the opening of the above blocking member is perpendicular to the base.

7. In paragraph 6, A vehicle exterior inspection lighting device characterized in that the above blocking member and the base are formed of different materials.

8. In paragraph 1, A vehicle exterior inspection lighting device characterized in that the thickness of the above blocking area is smaller than the thickness of the above light-transmitting area.

9. In paragraph 1, A vehicle exterior inspection lighting device characterized in that the lighting unit is provided with a plurality of light-emitting elements, and the plurality of light-emitting elements are arranged to correspond to the light-transmitting area and irradiate light to the outside through the light-transmitting area.

10. In paragraph 9, Further comprising a control unit for controlling the plurality of light-emitting bodies, The above control unit adjusts the illuminance or color temperature of each of the plurality of light-emitting bodies, A vehicle exterior inspection lighting device, characterized in that some of the plurality of light-emitting bodies have a first value of illuminance or color temperature, the remainder of the plurality of light-emitting bodies have a second value of illuminance or color temperature, and the first value and the second value are different values.

11. Including a plurality of vehicle exterior inspection lighting devices as defined in any one of the clauses 1 to 10, A vehicle exterior inspection system characterized in that the plurality of vehicle exterior inspection lighting devices are installed in the form of a tunnel to surround the side and top of the vehicle, and are arranged in a plurality of rows from the entrance to the exit of the tunnel.

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