JPH1113U - Lighting equipment - Google Patents

Abstract

(57) [Summary] [PROBLEMS] The present invention provides an illumination device suitable for an inspection device or the like that requires an accurate inspection. SOLUTION: A pair of rod-shaped light sources 8 are provided on both sides in a case 7 provided with an opening 11, and an arc-shaped reflecting plate 9 is attached to the light sources, and the light sources oppose the opening 11 of the case 7. A plate-like reflector 10 having an isosceles triangular cross section is provided at the position, and reflects light from the plate-like light source 8 to the opening 11 through the shading correction plate 12.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a lighting device suitable for an inspection device or the like that requires an accurate inspection.

[0002]

[Prior art]

 As an example where accurate inspection is required, when making capsule PTP sheets, the inspector visually inspects the capsules for lack of medicine after the capsules are supplied on the PVC sheet, and checks each capsule. To ensure that there is no shortage of filling.

[0003]

[Problems to be solved by the invention]

 However, in the above-described conventional drug deficiency inspection method, since each capsule on the PTP sheet is inspected for a deficiency of the drug by a visual inspection by an inspector, it is difficult to improve the accuracy of the inspection, and it is difficult There was a problem that it was necessary to secure a qualified inspector.

Therefore, it is conceivable to inspect the filling amount of each capsule before the PTP sheet process. However, if such a method is adopted, a dedicated inspection device for inspecting the filling amount of each capsule other than in the production process. There is a problem that it becomes necessary.

[0005] In view of the above circumstances, the present invention can be installed in an existing blister pack device, and can be used to fill each capsule on a sheet without the need for a separate inspection process or specialized personnel. The purpose is to provide a lighting device suitable for inspecting quantities at once, at high speed, and accurately.

[0006]

[Means for Solving the Problems]

 In order to achieve the above object, a lighting device according to the present invention includes a case having an opening on one surface, a pair of rod-like light sources provided in the case and located on both sides of the opening, and An arc-shaped reflecting plate provided on each of the rod-shaped light sources; and an arc-shaped reflector provided in the case at a position facing the opening in the case so as to reflect the illumination light from the pair of rod-shaped light sources toward the opening. And a shading correction plate provided between the plate-shaped reflector and the opening.

[0007]

[Action]

 With the illumination device having the above-described configuration, it is possible to obtain high-quality illumination light not by direct light from the light source but also by reflected light from the pair of rod-shaped light sources.

[0008]

【Example】

 FIG. 1 is a partially cut-away side view showing an embodiment of a lighting device according to the present invention.

The lighting device 2 includes two rod-like light sources (only one is shown in the figure) 8 arranged in the lighting case 7 as shown in a partially cut-away side view of FIG. Two arc-shaped reflectors (only one is shown in the figure) 9 for reflecting light from the rod-shaped light source 8, light from each of the arc-shaped reflectors 9, and light from each of the rod-shaped light sources 8 And a plate-like reflector 10 having an isosceles cross section and reflecting toward the opening 11 formed in the upper part of the illumination case 7 and light reflected by the plate-like reflector 10 uniformly. A light shading correction plate 12 is provided, and each of the rod-shaped light sources 8 is turned on. The light obtained by this is reflected upward by each of the arc-shaped reflection plates 9 and the plate-shaped reflection plates 10, and then the shading correction plate 12 is turned on. 12 to make the light uniform and the opening Emitted from 11.

FIGS. 2 and 3 show examples in which the lighting device according to the present invention is used. The PTP medicine filling amount inspection apparatus shown in these figures includes an illuminating device 2, a television camera 3, and an image processing device 4 provided in the blister pack device 1, and the medicine in the middle of the transportation is filled. While the PTP sheet 6 on which the plurality of capsules 5 are mounted is illuminated from below by the illumination device 2, the PTP sheet 6 is photographed from above by the television camera 3, and an image signal obtained by this photographing operation is obtained. It is processed by the image processing device 4 to check whether or not the medicine filling amount of each capsule 5 on the PTP sheet 6 is insufficient.

The television camera 3 is disposed above a conveyor that conveys the PTP sheet 6. The television camera 3 takes an image of the PTP sheet 6 illuminated by the illuminating device 2 and shoots the PTP sheet 6. The image signal obtained by the operation is supplied to the image processing device 4.

The image processing device 4 takes in an image signal output from the television camera 3, binarizes the image signal with a preset threshold value for each capsule, and generates a binarized image. Based on the binarized image, it is determined whether or not the amount of the medicine filled in each capsule 5 placed on the PTP sheet 6 is insufficient.

As a result, the amount of the medicine filled in each of the capsules 5 placed on the PTP sheet 6 is not short, and the image shown in FIG. When a signal is output and the density cross section of each capsule 5 indicated by the image signal is as shown in FIG. 4B, the image signal obtained by binarizing the image signal as shown in FIG. It is determined that the capsules 5 have a uniform concentration with each other, and that the medicines filled in the capsules 5 placed on the PTP sheet 6 this time are not insufficient.

One of the capsules 5 placed on the PTP sheet 6, for example, the second capsule from the upper left is empty, and the other capsules 5 are filled with the drug. When the amount is not insufficient, even if the image indicated by the image signal output from the television camera as shown in FIG.

However, since the density cross section of each capsule 5 indicated by this image signal is as shown in FIG. 5B, the image signal is binarized by a threshold value 150 as shown in FIG. 5C. As can be seen from the image obtained in this manner, the amount of drug in the second capsule 5 from the upper left is insufficient.

In addition, as shown in FIG. 6A, when the density cross section is the same as that of FIG. 5B, if the image is binarized by the threshold value 170, a binarized image shown in FIG. 6B is obtained. As can be seen from the binarized image, the amount of drug in the second capsule 5 from the upper left is insufficient.

In addition, as shown in FIG. 7A, when the density cross section is the same as that of FIG. 5B, if the binarization is performed with the threshold value 180, the binarized image shown in FIG. 7B is obtained. As can be seen from the binarized image, the amount of drug in the second capsule 5 from the upper left is insufficient.

Further, as shown in FIG. 8A, at the same density cross section as in FIG. 5B, if binarization is performed with the threshold value 185, a binarized image shown in FIG. 8B is obtained. As can be seen from the binarized image, the amount of drug in the second capsule 5 from the upper left is insufficient.

As described above, in this embodiment, while the PTP sheet 6 being conveyed is illuminated from below by the illumination device 2, the PTP sheet 6 is photographed from above by the television camera 3, and is obtained by this photographing operation. The image signal thus processed is processed by the image processing device 4 to check whether the amount of the medicine filled in each capsule 5 placed on the PTP sheet 6 is insufficient. It can be installed in the packing device 1 and inspects the drug filling amount of each capsule 5 on the sheet 6 at once, at high speed and accurately without the need for a special inspection process or special personnel. be able to.

[0020]

[Effect of the invention]

 As described above, according to the present invention, not a direct light but a uniform irradiation light can be extracted from the case opening by the pair of rod-shaped light sources, and the light source and the reflector can be effectively compactly arranged. As a result, the entire case can be reduced in size, and a lighting device suitable for an inspection device or the like can be provided.

[Brief description of the drawings]

FIG. 1 is a partially cut-away side view showing a detailed configuration example of a lighting device according to an embodiment of the present invention.

FIG. 2 is a front view showing an example in which the present invention is applied to a medicine filling amount inspection device for PTP.

FIG. 3 is a side view of the PTP medicine filling amount inspection device shown in FIG. 2;

FIG. 4 is a schematic view showing a processing example of the PTP medicine filling amount inspection device shown in FIG. 2;

FIG. 5 is a schematic diagram showing a processing example of the PTP medicine filling amount inspection device shown in FIG. 2;

6 is a schematic view showing a processing example of the PTP medicine filling amount inspection device shown in FIG. 2;

FIG. 7 is a schematic view showing a processing example of the PTP medicine filling amount inspection device shown in FIG. 2;

8 is a schematic diagram showing a processing example of the PTP medicine filling amount inspection device shown in FIG. 2;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 blister pack device 2 lighting device 3 television camera (photographing device) 4 image processing device 5 capsule 6 PTP sheet

Claims (1)

[Utility model registration claims] 1. A case having an opening on one surface, a pair of rod-shaped light sources provided in the case so as to be located on both sides of the opening, and an arc-shaped reflection provided on each of the rod-shaped light sources A plate and a plate-like reflection plate having an isosceles triangular cross section provided in a position inside the case and opposed to the opening so as to reflect the illumination light from the pair of rod-shaped light sources toward the opening. And a shading correction plate provided between the plate-like reflection plate and the opening.