JP2019039758A - Egg inspection device - Google Patents

Abstract

To provide an egg inspection device capable of preventing content of egg or dirt from being deposited on an illumination unit positioned below an egg as inspection object.SOLUTION: The egg inspection device comprises: an illumination unit for illuminating light from the bottom of a holding member holding an egg; an imaging unit for imaging the egg through which the light transmits; and a determination part for determining the state of the surface of the egg on the basis of the image picked up by the imaging unit. The illumination unit has an inclination plate which is disposed being inclined inward to face the egg on the holding member, and a light emitting member which has a light emitting plane lush with the surface of the inclination plate.SELECTED DRAWING: Figure 3

Description

The present invention relates to an inspection apparatus for determining the surface state of an egg.

Eggs shipped to the market are sorted according to physical properties such as weight by a sorting and packaging device, and then packed in a transparent synthetic resin pack. Prior to or in parallel with this sorting package, the eggs are subjected to various tests. For example, to select the surface condition of eggs (physical properties of eggshell), specifically, those that have cracks or cracks on the egg surface, or those that have dung stains on the egg surface. Inspection.

For example, an egg inspection apparatus described in Patent Document 1 includes an illumination device that emits light from directly below an egg to be inspected that is conveyed while being rotated about a long axis of an egg by a roller, and an egg. An imaging apparatus that captures an image from directly above and a determination unit that determines the surface state of the egg based on the captured image.

JP-A-11-326202 Japanese Patent No. 593917

In the egg inspection apparatus as described above, since the lighting device is located below the egg to be inspected, the contents of the egg (egg white or egg yolk) fall from the broken egg, or dust etc. from the dirty egg on the lighting device. There was a problem of falling and depositing.

A method as described in Patent Document 2 is also conceivable in order to suppress the accumulation of egg contents and garbage on the lighting device located below the egg to be inspected. That is, in the egg inspection apparatus described in Patent Document 2, a shielding plate is provided above the laser to prevent contamination of the laser by falling objects.

If such a shielding plate is made large, that is, can cover a large area, the contamination of the laser can be surely prevented, while it can be an obstacle when the egg is exposed to the laser beam. Conversely, if the shielding plate is made smaller, the eggs can be reliably exposed to the laser beam, but the risk of the laser becoming dirty is also increased.

The present invention provides an egg inspection apparatus capable of suppressing the accumulation of egg contents and garbage on an illumination device located below the egg to be inspected by another method that replaces the prior art. For the purpose.

The present invention provides an irradiation unit that irradiates light from below a holding member that holds an egg, an imaging unit that images an egg that has transmitted the light, and an egg surface based on an image captured by the imaging unit. An egg inspection apparatus comprising a determination unit for determining a state, wherein the irradiation unit includes an inclined plate arranged to be inclined inward so as to face the egg on the holding member, and the inclined plate A light emitting member having a light emitting surface flush with the surface is provided.

Here, “level” means a flat state where there is no step between the two surfaces, but in addition to a completely flat one, a slight step may be generated.

ADVANTAGE OF THE INVENTION According to this invention, the test | inspection apparatus of the egg which can suppress that the content of an egg, garbage, etc. accumulate on the illuminating device located under the egg of test | inspection can be provided.

The schematic side view which looked at the inspection apparatus of the egg concerning one Embodiment of this invention along the conveyance direction. The expanded side view of the inspection apparatus of the egg of the embodiment. FIG. 3 is an enlarged side view showing a partially broken egg inspection apparatus according to the embodiment. The top view of the inspection apparatus of the egg of the embodiment. Operation | movement explanatory drawing of the inspection apparatus of the egg of the embodiment. The figure which shows an example of the image obtained with the inspection apparatus of the egg of the embodiment.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The egg inspection apparatus 1 according to the present embodiment is used in an egg sorting system (not shown) for sorting according to physical properties such as weight.

The egg selection system includes an original egg supply unit to which raw eggs are supplied, a direction alignment unit that aligns the directions of a plurality of supplied eggs E, and eggs whose eggshells are mainly broken among the eggs E that have been aligned in direction. (Hereinafter referred to as “broken egg”) for detecting the broken egg (corresponding to the “egg inspection apparatus 1” of the present application), and the eggs E other than the broken egg are washed with warm water or the like. The egg washing part, the drying part for drying the surface of the egg E after washing, and the physical properties of the washed and dried egg E are detected using a known spectral analysis processing technique and acoustic processing technique, and a cracked egg is detected. It is mainly composed of a sorting set part for excluding eggs that are out of the trading standards for eggs such as dirty eggs, blood eggs, spoiled eggs, extremely small eggs, and extremely large eggs. Then, sorting is performed for each weight category of the agricultural and forestry standards based on the measurement result of the egg weight measuring unit that measures the weight of the normal egg excluding the non-standard egg. Since various known ones can be applied to the raw egg supply unit, the direction alignment unit, the egg washing unit, the drying unit, the sorting assembly unit, and the egg weight measurement unit, detailed description thereof is omitted.

The egg breaking detection unit (hereinafter referred to as “inspection apparatus 1”) is disposed upstream of the cleaning unit for cleaning the egg E and the drying unit for drying the egg E. Hereinafter, the inspection apparatus 1 according to the present embodiment will be described in detail.

As shown in FIG. 1, the inspection apparatus 1 includes illumination units 2 and 3, imaging units 4 and 5, and a determination unit (not shown). The inspection apparatus 1 inspects the egg E that is carried downstream while being rotated by the conveying unit 6 that is mainly formed of a holding member 62 (for example, a catching roller) that holds the egg.

The irradiation units 2 and 3 irradiate light toward the egg E. In the present embodiment, the irradiation units 2 and 3 irradiate light from the lower side of the holding member 62 that holds the egg E. In FIGS. 1 to 3, the path of light irradiated by the irradiation units 2 and 3 is schematically shown by broken lines. As shown in FIGS. 1 to 5, the irradiation units 2 and 3 irradiate from the first irradiation unit 2 for irradiation from one end E1 side of the egg E and from the other end E2 side of the egg E. The 2nd irradiation part 3 for doing. Each irradiation part 2 and 3 irradiates infrared light toward the lower surface side of the egg E, below the conveyance part 6, specifically, below the holding members 62 and 62 adjacent in the width direction. Has been placed.

Moreover, the irradiation parts 2 and 3 of this embodiment are provided with the inclined plates 21 and 31 and the light emission members 22 and 32 as shown in FIGS. The inclined plates 21 and 31 are provided so that the surfaces thereof are inclined with respect to the conveying surface for conveying the egg E, and are inclined inward so as to face the egg E on the holding member 62. ing. In other words, the inclined plates 21 and 31 form an inclination that descends from the end portion side of the holding member 62 toward the center C in the left-right direction of each row described later. The inclined plates 21 and 31 are black and formed using a material that hardly reflects light on the surface. Each inclined plate 21 and 31 is a long thing arranged along the conveyance direction of the conveyance part 6, and the two inclined plates 21 and 31 adjacent to the width direction are faced | matched by the vertex. The light emitting members 22 and 32 have a light emitting surface that is flush with the surfaces of the inclined plates 21 and 31, and for example, LEDs that emit infrared light having a wavelength of 750 nm to 850 nm are used. Note that, in FIG. 3, the description of the wirings and the like located on the lower surfaces of the inclined plates 21 and 31 and the light emitting members 22 and 32 is omitted.

Irradiation by the irradiation units 2 and 3 is executed based on a signal from a sensor (not shown) provided on the upstream side of the irradiation units 2 and 3 that detects the presence or absence of the egg E. The sensor is provided above the egg E, and detects the egg E conveyed from the upstream side by the conveying unit 6. And if the detected egg E is conveyed to a predetermined position, the irradiation parts 2 and 3 will light-emit. Therefore, the irradiation units 2 and 3 are lit intermittently.

In the present embodiment, as shown in FIG. 4, the irradiating units 2 and 3 are formed by arranging a plurality of light emitting members 22 and 32 on a single inclined plate 21 and 31. Specifically, three first irradiation units 2 are arranged at a predetermined interval along the transport direction, and the second irradiation unit 3 is located at a position shifted by a half pitch from the first irradiation unit 2. Are arranged at predetermined intervals. Moreover, the 1st irradiation part 2 is arrange | positioned in the position which shifted | deviated to the one side from the left-right direction center C of each row | line | column of the conveyance part 6 of 6 rows, and the 2nd irradiation part 3 is the position of each conveyance part 6. It is arranged at a position shifted from the left-right direction center C to the other side. That is, said 1st irradiation part 2 and said 2nd irradiation part 3 are arrange | positioned zigzag along the conveyance direction of the egg E. As shown in FIG.

In addition, each 1st irradiation part 2 is set in the position hidden by the egg E mounted on the conveyance part 6 in the image P image | photographed with the 1st imaging part 4 mentioned later, and 2nd Each irradiation unit 3 is set at a position hidden by an egg E placed on the transport unit 6 in an image P photographed by a second imaging unit 5 described later. In other words, in this egg inspection apparatus 1, the imaging unit has the first imaging unit 4 that images the egg E from the other end E2 side of the egg E, and the egg from the one end E1 side of the egg E. A second imaging unit 5 that images E, and the irradiation unit is configured to connect a line connecting the first imaging unit 4 and an egg E on the transport unit 6 (or an opening 63 described later of the transport unit 6). Arranged on an extension line of a line connecting the first irradiation unit 2 disposed on the extension line, the second imaging unit 5 and the egg E on the transport unit 6 (or an opening 63 described later of the transport unit 6). The second irradiation unit 3 is provided.

Moreover, the said irradiation parts 2 and 3 of this embodiment can adjust the distance with the holding member 62. FIG. Specifically, the irradiation units 2 and 3 can be moved up and down, and a rising position (U) at which the egg E can be irradiated toward a predetermined position and the upper ends of the inclined plates 21 and 31 are the holding member 62. It moves between the retreat position (D) located below the lower end of.

As shown in FIG. 1, the imaging units 4 and 5 photograph the egg E that has transmitted the light. Specifically, the imaging units 4 and 5 image the egg E from the first imaging unit 4 that images the egg E from the other end E2 side of the egg E and the one end E1 side of the egg E. A second imaging unit 5. Each imaging unit 4, 5 is capable of photographing the upper surface side of the egg E, is provided above the transport unit 6, and is disposed obliquely with respect to the transport surface. In the present embodiment, a CCD camera having sensitivity in the near-infrared region is used as each of the imaging units 4 and 5, and thereby, an image P in which infrared light is transmitted through the egg E can be acquired. Yes. Each of the imaging units 4 and 5 is set so that three rows of eggs E are in the field of view. In the present embodiment, two each of the first imaging unit 4 and the second imaging unit 5 are provided. However, it is not limited to this.

FIG. 6 shows an example of an image P in which the eggs E arranged as shown in FIG. In the present embodiment, an image P corresponding to 3 rows × 3 columns is obtained, but in FIG. 6, it is represented in a format of 1 row × 6 columns for explanation. Here, in order from the left, the hole egg E3, the depressed egg E4, the open crack egg E5, the dung dirt egg E6, the contents-attached egg E7, and the wound / spotted egg E8 are schematically shown. Those having large holes on the eggshell surface, such as the hole egg E3 and the open crack egg E5, are to be discarded. On the other hand, the depressed egg E4 can be set so as not to be discarded unless a hole is formed, and a feces-stained egg E6, a content-attached egg E7 (an egg yolk or egg white leaked from another egg), The wound / spotted egg E8 is set not to be discarded.

The determination unit determines the surface state of the egg based on the images taken by the imaging units 4 and 5. The specific mode of the determination unit (image processing means) is not limited to the embodiment described below, and various methods known in this field can be applied.

A control device (not shown) for controlling the inspection device 1 of this embodiment is a microcomputer system having a processor, a memory, an input interface, an output interface, and the like. The memory of the control device stores a predetermined threshold value for comparing the photographed image P with a digitized gray value. As the predetermined threshold value, for example, an image for determining “cracking” or “feces contamination” in the image P photographed with infrared light can be considered.

If the gray value of the image P photographed with infrared light is within a range (darker) that is smaller (darker) than the predetermined threshold, it can be determined that there is no “crack”. On the other hand, if there is a portion where the gray value of the image P photographed with infrared light is larger (brighter) than a predetermined threshold, it can be determined that the portion is “cracked”. That is, it can be said that a bright region (a portion larger than the predetermined threshold) in the image P is a portion where infrared light is transmitted more strongly.

The egg E through which the infrared rays are transmitted scatters light within the eggshell, and the entire egg E emits light like a light emitter. The cracked portion on the surface appears brighter because there is no eggshell to be transmitted as compared to the unbroken portion.

As a specific method for performing image processing on each image P, each image P may be binarized using a predetermined threshold. Thus, if there is a “crack” in the image P, that portion appears as a brighter (white) area than the others. The determination unit may determine that there is a “crack” when there is even a bright region, or determine that there is a “crack” when the area ratio of the bright region to the determination region exceeds a threshold value. Also good. In addition, if the same process is performed for “feces contamination” using another threshold, the portion appears as a darker (black) region than the other.

As shown in FIGS. 1 to 5, the transport unit 6 transports a plurality of eggs E in an aligned state. The transport unit 6 is attached to the roller shaft 61 and arranged in a direction perpendicular to the transport direction. This is well known in this field, which is mainly composed of a ridge-shaped roller (an example of the holding member 62). An opening 63 penetrating in the vertical direction is formed between the rollers 62 adjacent to each other in the transport direction. In a region corresponding to the opening 63, that is, in an area where the egg E is held between the rollers 62 adjacent in the conveying direction, and the inspection apparatus 1 of the present embodiment is disposed. The egg E is configured to rotate in the direction opposite to the rotation of the roller 62. In FIG. 4, the roller shaft 61 and the roller 62 are indicated by a two-dot chain line.

Next, an example of control with respect to the irradiation units 2 and 3 and the imaging units 4 and 5 of the inspection apparatus 1 of the present embodiment will be described.

First, the presence or absence of the egg E to be examined is detected. Specifically, it is detected whether or not the egg E is placed between the adjacent rollers 62 by using a sensor arranged at a predetermined distance upstream from each of the irradiation units 2 and 3, and a signal to that effect is output.

If there is an egg E, the first irradiation unit 2 is turned on and irradiated with infrared light at the timing when the egg E on the transport unit 6 comes right above the first irradiation unit 2. At that time, when the irradiated infrared light (direct light) enters the imaging units 4 and 5, the imaging of the egg E is inferior, so that the irradiation position, irradiation timing, and the like can be irradiated within an appropriate range of the eggshell. It is desirable to set And the egg E is image | photographed by the 1st imaging part 4 according to irradiation of infrared light. At this time, the second irradiation unit 3 is turned off.

Then, the egg E moves by the conveyance part 6, and the 2nd irradiation part 3 is turned on and the infrared light is irradiated at the timing when the egg E comes right above the second irradiation part 3. Then, as described above, the egg E is photographed by the second imaging unit 5 in accordance with the irradiation of infrared light. At this time, the first irradiation unit 2 is turned off.

That is, the first imaging unit 4 has the other end of the egg E when the first irradiation unit 2 is irradiating the egg E and the second irradiation unit 3 is not irradiating the egg E. The egg E is photographed from the E2 side. On the other hand, the second imaging unit 5 is configured such that the first irradiation unit 2 does not irradiate the egg E and the second irradiation unit 3 irradiates the egg E. The egg E is photographed from the end E1 side.

Note that these steps are repeated a total of six times, with three times of shooting by the first imaging unit 4 and three times of shooting by the second imaging unit 5 for one egg E that moves while rotating. . Therefore, the inspection can be performed over the entire circumference of the egg.

As described above, the egg inspection apparatus 1 according to the present embodiment includes the irradiation units 2 and 3 that irradiate light from the lower side of the holding member 62 that holds the egg E, and the egg E that transmits the light. An egg inspection apparatus 1 comprising imaging units 4 and 5 for imaging, and a determination unit that determines a surface state of the egg E based on images captured by the imaging units 4 and 5, the irradiation unit 2, 3 is a light emitting member having inclined plates 21 and 31 that are inclined inward so as to face the egg E on the holding member 62, and a light emitting surface flush with the surfaces of the inclined plates 21 and 31. 22 and 32.

If it is such, it can suppress that the content of an egg, garbage, etc. accumulate on the illumination parts 2 and 3 located under the egg E to be conveyed. For example, when contents such as egg white and / or egg yolk leak from a broken egg on the holding member 62, they fall downward along the inclined plates 21 and 31 due to gravity. Therefore, they do not stay on the light emitting members 22 and 32 for a long time, and the inspection can be continued smoothly.

Moreover, since it irradiates with respect to the lower surface of the holding member 62 or the egg E from an oblique direction, it irradiates out of the reflected light in the lower surface of the holding member 62 or the egg E compared with what irradiates directly upward. The amount returned to the parts 2 and 3 can be reduced, and the inspection can be performed more accurately. Further, since the irradiation units 2 and 3 (inclined plates 21 and 31) are not provided directly below the center C in the left-right direction of each row of the transport unit 6, reflection of light toward the holding member 62 side or contents Suppression of dust and garbage can be suppressed.

The irradiating units 2 and 3 are formed by arranging a plurality of light emitting members 22 and 32 in a line on the inclined plates 21 and 31, respectively, so that they are arranged in a line as in this embodiment. It is easy to arrange the irradiation units 2 and 3 so as to correspond to the transport unit 6. In addition, since the light emitting surfaces of the plurality of light emitting members 22 and 32 and the surfaces of the single inclined plates 21 and 31 are formed flush with each other, compared to the case where only the light emitting surfaces are provided independently, There is also an effect that it is easy to clean when the light emitting surface is dirty.

The irradiation units 2 and 3 can be moved up and down, and a rising position (U) at which the egg E can be irradiated toward a predetermined position, and the upper ends of the inclined plates 21 and 22 are lower than the lower end of the holding member 62. It moves between the retracted position (D) located on the lower side. Therefore, as shown in FIG. 2 and FIG. 3, the light emitting surface can be brought as close to the egg E as possible at the raised position (U). Further, at the retracted position (D), as shown in FIGS. 4 and 5, even if it is slid in the direction of the roller shaft 61, it does not interfere with the holding member 62. Inspection and cleaning of the irradiation units 2 and 3 can be performed.

Furthermore, based on the irradiation parts 2 and 3 which irradiate light toward the egg E, the imaging parts 4 and 5 which image | photograph the egg E which permeate | transmitted the said light, and the image P image | photographed by this imaging part 4 and 5 And a determination unit for determining the surface state of the egg E. And the said irradiation parts 2 and 3 are the 1st irradiation part 2 for irradiating from the one end E1 side of the egg E, and the 2nd irradiation for irradiating from the other end E2 side of the egg E The imaging unit 4 and 5 is a first imaging unit that images the egg E from the other end E2 side of the egg E when the first irradiation unit 2 is irradiating the egg E. An imaging unit 4 and a second imaging unit 5 that images the egg E from one end E1 side of the egg E when the second irradiation unit 3 is irradiating the egg E are provided.

Therefore, it is possible to inspect whether or not there are defects in the surface state of the egg E such as cracks, cracks, and adhesion of dirt on the sharp end side or blunt end side of the egg E. In particular, the eggs E are conveyed while being rotated about the long axis connecting the sharp end and the blunt end of the egg E by the roller 62, and inspected one after another over the entire circumference of the egg E. The first imaging unit 4 captures an area from the other end E2 of the egg E to the circumference of the egg E, and the second imaging unit 5 captures the egg from one end E1 of the egg E to the egg. Of course, since the area around E's trunk is photographed, it is possible to inspect for cracks and the like around the trunk. In this way, it is possible to automate the parts that have been visually confirmed by human hands, such as broken eggs and leaked eggs that have leaked from the cracked parts of the eggshell, so labor costs can be reduced. Become.

In particular, according to the present embodiment, since the egg E is photographed from the side opposite to the end side illuminated by the irradiation units 2 and 3, the whole irradiation unit 2 and 3 on the side that is lit is the egg E. To hide. In other words, the irradiation units 2 and 3 and the imaging units 4 and 5 are arranged so that the imaging units 4 and 5 can capture images at a position where the direct light from the irradiation units 2 and 3 is blocked by the egg E. That is, the egg E is positioned at a position where the light emitted from the irradiation units 2 and 3 and the imaging units 4 and 5 are connected. The egg E blocks direct light from the irradiation units 2 and 3, and the imaging unit 4 and It is possible to suppress direct light from entering 5 and to detect cracks and the like appropriately.

Moreover, since the test | inspection apparatus 1 of this embodiment is arrange | positioned in the upstream of the washing | cleaning part which wash | cleans the egg E among the egg selection systems, and the drying part which dries the egg E, a washing | cleaning part and a drying part can be soiled. Broken eggs and leaked eggs can be sorted before being transported to these devices. Therefore, contamination of the apparatus and water can be suppressed, and the labor of cleaning can be saved.

The present invention is not limited to the embodiment described above.

The egg inspection apparatus may be used for inspections other than whether the egg is broken. Further, it may be arranged at any position in the egg sorting system. That is, the place where the egg inspection apparatus of the present invention is arranged is not limited to the upstream side of the cleaning unit, but is downstream of the cleaning unit and upstream of the drying unit, or downstream of the drying unit. Also good.

The egg sorting system can be variously changed except for the inspection apparatus according to the present invention. The inspection apparatus of the present invention may be applied to an egg sorting system that does not include a washing unit or a drying unit.

The irradiation unit can be variously changed as long as it can irradiate the egg with light. Specifically, as the irradiating part for transmission, one containing visible light to infrared light components can be used, and it is preferable to use near infrared light having a wavelength of 780 nm to 870 nm among infrared rays. . That is, if a wavelength shorter than 780 nm is used, it is easily affected by the eggshell color, and if a wavelength longer than 870 nm is used, water absorption increases, so that it is easily affected by egg yolk and egg white, and the sensitivity of the imaging means. This is because there is a problem that the temperature drops. Further, the irradiating unit may include a “thing that refracts and focuses light” such as a lens, and a “thing that limits the angle of light” such as a diaphragm.

The holding member is not limited to the roller as described above, and various other carriers known in this field can be applied. In other words, the conveyance unit is not limited to one that conveys an egg while rotating it, and is not limited to one that conveys a long axis of the egg arranged sideways in the conveyance direction. Also, the number of columns is not limited to six.

The number of irradiation units is not limited to that shown in the drawing, and can be variously changed according to the shape of the egg held by the holding member and the number of transport rows. For example, when transported in a single row, only a pair of left and right inclined plates may be provided, and the number of light emitting members arranged on one inclined plate may be only one.

The inclined plate is not necessarily plate-shaped, and the inclination angle with respect to the conveyance surface and the shape of the plate can be variously changed without departing from the gist of the present invention. Moreover, you may integrally form adjacent irradiation parts.

The irradiation unit may be fixed at a predetermined position so as not to be moved up and down.

The 1st irradiation part and the 2nd irradiation part may be located in a line along the direction orthogonal to a conveyance direction. Moreover, as long as it does not overlap with the imaging | photography timing in each imaging part, a part of timing which the 1st irradiation part is lighting and the timing which the 2nd irradiation part is lighting may overlap. Further, all of the first irradiation unit may be turned on at the same timing, or divided into a plurality of groups and turned on at different timings for each group. The same applies to the second irradiation unit.

An imaging part will not be restricted to what was mentioned above if it can image | photograph an egg. The position of the imaging unit and the angle with respect to the transport surface are not limited to those shown in the drawings, and can be variously changed. Moreover, what was illustrated about the image image | photographed by these imaging parts is only an example.

The determination unit may determine the surface state based on the brightness difference (contrast) of the captured image. For example, if the image has a portion (edge) where the luminance is greatly changed, it can be determined that there is “cracking” or “feces contamination” in that portion. Prior to edge detection, preprocessing well known in this field may be applied to the image.

The embodiment disclosed this time is an example, and the present invention is not limited to this. The present invention is defined by the terms of the claims, rather than the scope described above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

The present invention can be used for an inspection apparatus for determining the surface state of an egg.

DESCRIPTION OF SYMBOLS 1 ... Egg inspection apparatus 2, 3 ... Irradiation part 21, 31 ... Inclined plate 22, 32 ... Light emitting member (U) ... Ascending position (D) ... Retraction position 4, 5 ... Imaging part 62 ... Holding member E ... Egg

Claims (3)

An irradiation unit that emits light from below the holding member that holds the egg;
An imaging unit for photographing the egg through which the light is transmitted;
An egg inspection apparatus comprising: a determination unit that determines the surface state of an egg based on an image captured by the imaging unit;
The irradiation unit includes an inclined plate arranged to be inclined inward so as to face the egg on the holding member, and a light emitting member having a light emitting surface flush with the surface of the inclined plate. An egg inspection device. The egg inspection apparatus according to claim 1, wherein the irradiation unit includes a plurality of the light emitting members arranged on one inclined plate. The irradiation unit is capable of moving up and down, and is between a raised position where irradiation can be performed toward a predetermined position of the egg and a retreat position where the upper end of the inclined plate is located below the lower end of the holding member. The egg inspection apparatus according to claim 1 or 2, which moves.

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