JP3050296U - Glass dosimeter - Google Patents

Abstract

(57) [Problem] To provide a glass dosimeter that not only can reduce the size and weight of a glass dosimeter itself, but also can reliably prevent breakage of a glass element, and can easily handle the glass element. The purpose is to provide. SOLUTION: A protective container 76 holding a glass element 81.
Is held between the front cover 61 and the back cover 62 of the holder 60, and the glass element 81 held in the protective container 76 is covered without being exposed by the label 82 attached to the entire surface of the protective container 76. I did it.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a glass dosimeter that is worn by people engaged in radiation, such as doctors, nurses, X-ray technicians, technicians at various research institutes, and technicians in the mining industry, and is used to measure the irradiation dose received within a certain period of time. In particular, the present invention relates to a glass dosimeter in which a holder and a protective container for a glass element housed in the holder are improved.

[0002]

[Prior art]

 Generally, a fluorescent glass element made of phosphate glass containing silver ions is used for measuring the radiation exposure dose. When this fluorescent glass element is excited by ultraviolet rays of ionizing radiation, fluorescence is emitted from a predetermined glass surface. Since the intensity of the fluorescent light emitted at this time is proportional to the amount of radiation, the amount of radiation of the fluorescent glass element can be measured by detecting the amount of fluorescent light.

Therefore, a fluorescent glass dosimeter using the above fluorescent glass element has been conventionally developed. This fluorescent glass dosimeter is carried by an operator who handles radiation at a radiation facility or the like, and is used for measuring the exposure dose and measuring the radiation dose of the environment (Free-Air).

FIG. 8 shows an example of a conventional glass dosimeter for γ (X) · β. The glass dosimeter 10A is provided with a glass element section 20, a capsule 30A and a capsule holder 40. Have been. The glass element 21 provided in the glass element section 20 is press-molded, held by a metal frame 23 having an identification hole 22 at an end, and provided on the top of the capsule 30A. It is attached to the capsule 30A so that it can be inserted and removed freely from the opening 31.

[0005] A β-ray detection window 32 is provided on the surface side of the capsule 30A, and a γ / X-ray detection compensation filter 33 is adhered inside the window 32. A label (not shown) stating the personal name, the identification of the glass element, the wearing period, and the like with a barcode, a binary code, or the like is attached to the back surface of the capsule 30A. The capsule 30A is attached to the capsule holder 40 so as to be freely inserted into and removed from an opening 41 provided at the top of the capsule holder 40.

A notch 42 communicating with the opening 41 is provided on the front side of the capsule holder 40 to expose the β-ray detection window 32 of the capsule 30A to the outside. A clip 43 is provided on the back side of the capsule holder 40.

FIG. 9 shows an example of a conventional glass dosimeter for thermal neutrons. The difference between the glass dosimeter 10B and the glass dosimeter 10A in this example is, for example, a capsule 30B. A Cd filter 34 for thermal neutron beam detection is adhered inside the inside of the glass dosimeter, and the other basic configuration is substantially the same as that of the glass dosimeter 10A.

FIG. 10 shows a method of wearing the glass dosimeter 10 A of FIG. 8. After the capsule 30 A is mounted in the capsule holder 40 through the opening 41 provided on the top of the capsule holder 40, By attaching a clip 43 provided on the back side of the capsule holder 40 to a breast pocket or the like, the glass dosimeter 10A can be carried at all times. Incidentally, the same wearing method is adopted also in the glass dosimeter 10B.

FIG. 11 shows a glass dosimeter 10 C to which the above capsules 30 A and 30 B can be simultaneously worn. The glass dosimeter 10 C is provided on the top of the capsule holder 40 A and is partitioned by a partition 44. The capsules 30A, 30B can be mounted in the capsule holder 40A from the openings 41a, 41b, and the clip 43 provided on the back side of the capsule holder 40A is mounted in a breast pocket or the like, so that the capsules 30A, 30B can be mounted. The 30B can be carried at all times.

[0010]

[Problems to be solved by the invention]

 However, in the above-described conventional glass dosimeters 10A, 10B, and 10C, the metal frame 22 holding the glass element 21 is formed by press molding, which hinders reduction in molding cost. In addition to the above, since the identification hole 22 is required at the end, it becomes an obstacle in reducing the length of the metal frame 22 and becomes disadvantageous in reducing the size of the capsule holders 40 and 40A. This is an obstacle to reducing the size and weight of the dosimeters 10A, 10B, and 10C themselves.

Although the glass element 21 is held by the metal frame 22 for reasons such as being vulnerable to impact, most of its detection surface is exposed to the outside. If the metal frame 22 jumps out or falls off from the base 30B, the glass element 21 is likely to be damaged.

Further, a label (not shown) stating a personal name, identification of a glass element, a wearing period, and the like with a bar code, a binary code, or the like is attached to the back side of the capsules 30A, 30B. Since there is no indication on the metal frame 22 holding the glass element 21 for indicating the identification, the metal frame 22 may accidentally jump out of the capsules 30A and 30B, as described above, especially for an administrator or the like. If the glass element 21 is dropped, it becomes difficult to identify the glass element 21 and it is predicted that a mistake in wearing is caused. Therefore, it is troublesome in handling.

The present invention has been made in view of such circumstances, and not only can the size and weight of the glass dosimeter itself be reduced, but also the glass element can be reliably prevented from being damaged. An object of the present invention is to provide a glass dosimeter capable of facilitating the handling of glass.

[0014]

[Means for Solving the Problems]

 According to the present invention, a holder having a front cover and a back cover having one end rotatably connected to each other and a dosimeter filter attached to an inner surface thereof, and a holder held between the front cover and the back cover. A protective container, a glass element held by the protective container, and a label attached to the entire surface of the protective container so as to cover the glass element.

In this invention, since the protective container for holding the glass element is held between the front cover and the back cover of the holder, not only the number of parts can be reduced, but also the holder and the protective container are made as thin as possible. It can be formed.

In addition, since the glass element held in the protective container is covered without being exposed by the label attached to the entire surface of the protective container, there is no fear of touching the glass surface, and not only can the dose value be improved stably, Since the glass element does not touch the dosimeter filters mounted on the inner surfaces of the front cover and the back cover, there is no danger of damaging the dosimeter filters.

Further, not only is the separation of the glass element from the protective container prevented, but also if the protective container is accidentally dropped, the glass element is prevented from popping out by the label. Damage can be reliably prevented.

The invention according to claim 2 is characterized in that the holder and the protective container are formed of a resin having a small mass coefficient.

In this invention, not only can the glass dosimeter be measured by forming the holder and the protective container from a resin having a small mass coefficient, but also by forming the holder and the protective container from the same material, for example, γ-ray Radiation dose can be measured with higher accuracy.

The invention according to claim 3 is characterized in that positioning projections are provided on the inner surface of the front cover and / or the back cover, and the protection container is formed with positioning grooves that fit into the positioning projections. And

In this invention, since the protective container is fitted so that the positioning grooves coincide with the positioning protrusions on the inner surface of the front cover and / or the back cover, the reference surface of the glass element housed in the protective container is surely aligned. It is performed.

[0022] The invention according to claim 4 is characterized in that the label is adapted to the outer peripheral dimension of the protective container.

In the present invention, the label can be easily and reliably attached by adjusting the label to the outer peripheral dimension of the protective container.

The invention according to claim 5 is characterized in that at least a part of the outer peripheral edge of the protective container is provided with a cutout portion that can touch the adhesive surface side of the label. .

According to the present invention, the label can be easily peeled off because the notch provided in at least a part of the outer peripheral edge of the protective container can touch the adhesive surface side of the label.

[0026] The invention according to claim 6 is characterized in that a name of a user and a bar code for identifying the user and for identifying the glass element are attached to the front side of the label. I do.

In this invention, since the name of the user and a bar code for identifying the user and identifying the glass element are attached to the front side of the label, the protective container was removed from the holder. Even in this case, it is easy to confirm the user, preventing mistakes in wearing.In addition, the protective container can be attached to the holder while confirming the written direction of the name. Can also prevent.

[0028] The invention according to claim 7 is characterized in that a window for confirming the name of the user attached to the label is formed in the front cover.

According to the present invention, since the name of the user attached to the label can be confirmed from the window of the front cover, it is easy to confirm the user of the glass dosimeter, so that wearing mistakes can be prevented. .

[0030] In the invention according to claim 8, the protective container is provided with an accommodating portion adapted to the shape of the glass element, and at least a part of the accommodating portion is provided with an alignment portion. The glass element is provided with a notch corresponding to the alignment portion.

In the present invention, since the glass element is fitted so that the cutout portion is fitted to the positioning portion provided in the housing portion of the protective container, the positioning of the reference surface of the glass element can be performed easily and reliably. .

According to a ninth aspect of the present invention, a clip is provided on the back side of the back cover, and a clip piece of the clip is provided with a pin holding groove for detachably holding a safety pin. It is characterized by being.

In the present invention, since the pin piece of the clip is provided with the pin holding groove for detachably holding the safety pin, the number of mounting locations of the glass dosimeter can be increased.

[0034]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the glass dosimeter of the present invention, FIG. 2 is an exploded perspective view showing the glass dosimeter of FIG. 1, FIG. 3 (b) is an explanatory view of the operation of the clip, FIG. 4 is a perspective view showing the rear side of the protective container of FIG. 2, and FIG. 5 is a label for the protective container of FIG. It is a perspective view which shows sticking of.

The glass dosimeter 50 shown in these figures includes a holder 60, a protective container 76, a glass element 81, and a label 82. The holder 60 is made of a polyethylene resin having a small mass coefficient, and is provided with a front cover 61 and a back cover 62. The front cover 61 and the back cover 62 are rotatably connected by a hinge 63 provided at the lower end. A hook piece 64 is provided on the top of the front cover 61, and the front cover 61 and the back cover 62 are closed by being engaged with a hook receiving portion 65 of the back cover 62.

A window 66 is formed on the top side of the front cover 61, and this window 66 is for confirming the name and the like attached to the label 82, the details of which will be described later. Further, inside the front cover 61, a housing portion 61A is provided to accommodate the protective container 76 in accordance with the external dimensions of the protective container 76. Furthermore, a γ-X-ray detection compensation filter 67 made of, for example, copper (Cu) or tin (Sn) and a thermal neutron beam detection filter 68 made of cadmium (Cd) are adhered to the housing portion 61A. I have.

The back cover 62 is also provided with a storage portion 62A for storing the protective container 76 in correspondence with the storage portion 61A, and a γ is provided at a position corresponding to each filter of the front cover 61. The X-ray detection compensation filter 67 and the thermal neutron beam detection filter 68 are attached. A positioning projection 69 for positioning the protective container 76 is provided inside the back cover 62.

Further, a clip 70 is provided on the back side of the back cover 62. A clip piece 71 of the clip 70 is rotatably attached to a hinge 72 projecting from the rear side of the clip 70 via a shaft 73, and is inserted into the shaft 73 by a coil spring (not shown). As shown in FIG. 3A, it is urged in the direction of arrow a.

In the vicinity of the shaft 73 of the clip piece 71, a pin holding groove 75 for detachably holding the safety pin 74 is provided. When the safety pin 74 is mounted in the pin holding groove 75, as shown in FIG. 3B, the end of the clip piece 71 is opened in the direction of arrow b against the urging force of a coil spring (not shown). Then, the shaft 74a of the safety pin 74 is passed through the gap between the back cover 62 and the clip piece 71, the shaft 74a is fitted into the pin holding groove 75, and then the finger is released from the clip piece 71.

Then, as shown in FIG. 3A, the clip piece 71 is closed in the direction of arrow a by the urging force of a coil spring (not shown), and at the same time, the shaft 74 a of the safety pin 74 is moved by the inclined side 72 a of the hinge 72. Since the safety pin 74 is pressed against the back side of the pin holding groove 75, the safety pin 74 is held by the clip piece 71 without detaching. To remove the safety pin 74, perform the reverse operation. Therefore, since the attachment and detachment of the safety pin 74 is easy, the replacement of the safety pin 74 according to the mounting position of the glass dosimeter 50 can be easily performed.

In FIG. 5, similarly to the holder 60 described above, the protective container 76 is made of a polyethylene resin having a small mass coefficient, and can more accurately measure the radiation dose of γ-rays. It has become. The protective container 76 is provided with a housing 77 adapted to the outer dimensions of the glass element 81. A notch 78 is provided at the top of the protective container 76 to facilitate the peeling of the label 82, the details of which will be described later.

A positioning groove 79 is provided on the back side of the protective container 76, for example, as shown in FIG. The positioning grooves 79 correspond to the positioning protrusions 69 provided inside the back cover 62. When the protective container 76 is mounted on the back cover 62, the positioning protrusions 69 and the positioning groove portions 79 are provided. Is matched, the mounting of the protective container 76 is ensured.

Further, an edge 80 surrounding the accommodation portion 77 of the protective container 76 is a surface to which a label 82 is attached. On the upper side of the label 82, the user's name 83 is attached, and on the lower side, a bar code 84 for identifying the user and identifying the glass element 81 is attached. Have been. The dimensions of the label 82 are matched to the outer dimensions of the protective container 76.

When the label 82 is attached to the protective container 76, as shown in FIG. 5, for example, after the glass element 81 is fitted into the accommodation portion 77, the label 82 is covered so as to cover the glass element 81. It is bonded to the edge 80 of 76. As a result, the glass element 81 is held without being exposed to the outside by the protective container 76 and the label 82, so that even if the protective container 76 is accidentally dropped, damage to the glass element 81 is reliably prevented. Is done. Further, since a part of the label 82 can be touched from the notch 78 provided at the top of the protective container 76, the label 82 can be easily peeled off.

Next, a method of using the glass dosimeter 50 having the above configuration will be described. First, as shown in FIG. 5, after the glass element 81 is fitted into the housing 77 of the protective container 76, a label 82 is attached to the edge 80 of the protective container 76 so as to cover the glass element 81. Here, when the glass element 81 is fitted into the housing portion 77, the reference surface of the glass element 81 when the glass dosimeter 50 is used is aligned. As a result, the glass element 81 is held without being exposed to the outside by the protective container 76 and the label 82. Therefore, even if the protective container 76 is accidentally dropped, the glass element 81 may be damaged. Is reliably prevented.

Next, as described with reference to FIGS. 1 and 4, the protective container 76 is accommodated in the accommodating portion 62 A of the back cover 62. At this time, the protective container 76 is housed so that the positioning groove 79 provided on the rear side of the protective container 76 is aligned with the positioning projection 69 provided on the housing portion 62A of the back cover 62. At this time, if the positioning projection 69 and the positioning groove 79 do not match, the protection container 76 is floated by the positioning projection 69, so that an error in the fitting direction of the protection container 76 can be easily noticed. The protection container 76 can be securely accommodated.

After accommodating the protective container 76, the front cover 61 is closed to the back cover 62. At this time, since the hook pieces 64 provided on the top of the front cover 61 are locked to the hook receiving portions 65 of the back cover 62, the front cover 61 is securely locked to the back cover 62.

When the front cover 61 is closed on the back cover 62 side, the user's name 83 attached to the label 82 can be confirmed from the window 66 formed on the top side of the front cover 61. Can be given to the user without fail, so that wearing mistakes can be reliably prevented.

Next, when using the glass dosimeter 50, the clip 70 provided on the back side of the back cover 62 is sandwiched between the edges of the breast pocket, or an appropriate safety pin 74 is used. Or stop at the spot. Since the safety pin 74 is removably attached to the pin holding groove 75 of the clip piece 71 as described with reference to FIG. As described in (2), the safety pin 74 can be removed by opening the clip piece 71.

As described above, in the present embodiment, since the protection container 76 holding the glass element 81 is held between the front cover 61 and the back cover 62 of the holder 60, the number of parts is reduced. In addition, the holder 60 and the protective container 76 can be formed as thin as possible.

Further, since the glass element 81 held in the protective container 76 is covered without being exposed by the label 82 attached to the entire surface of the protective container 76, there is no fear of touching the glass surface and the dose value can be reduced. In addition to improving the stability, the glass element 81 does not touch the dosimeter filter or the like attached to the inner surface of the front cover and the back cover 62, so that there is no danger of damaging the dosimeter filter and the like.

Furthermore, not only is the separation of the glass element 81 from the protective container 76 prevented, but also if the protective container 76 is accidentally dropped, the glass element 81 is prevented from jumping out by the label 82. Therefore, damage to the glass element 81 can be reliably prevented.

Further, since the glass element 81 held in the protective container 76 is covered by the label 82, the label 82 is attached to the protective container 76 holding the glass element 81 so that the inspection company sends the glass element 81 to the user. Since it can be carried out in the state of being worn, it is possible to prevent the glass element 81 from being damaged at the time of transportation and to greatly reduce the transportation cost.

In the present embodiment, a case has been described in which the storage portion 77 of the protective container 76 for housing the glass element 81 is simply rectangular, but the present invention is not limited to this example. As described above, a triangular positioning portion 77a may be provided at a corner of the housing portion 77. In this case, by providing the notch portion 81a corresponding to the positioning portion 77a at the corresponding corner of the glass element 81, the positioning of the glass element 81 with respect to the housing portion 77 is reliably performed.

Further, the present invention is not limited to the triangular positioning portion 77a as in this example, but may be a quadrangular positioning portion 77b as shown in FIG. 7, for example. In this case, the notch portion 81b corresponding to the positioning portion 77b is provided at the corresponding corner of the glass element 81, so that the positioning of the glass element 81 with respect to the housing portion 77 is reliably performed. Further, the alignment portion 77a is not limited to a triangular shape or a square shape as in these examples, but may be another shape such as an arc shape.

[0056]

[Effect of the invention]

 As described above, according to the glass dosimeter of the present invention, not only the number of parts is reduced, but also the holder and the protective container can be formed as thin as possible, and the glass element held by the protective container is not required. The label attached to the entire surface of the protective container is covered without being exposed, so there is no danger of touching the glass surface and the glass element is prevented from detaching from the protective container, thus reducing the size and weight of the glass dosimeter itself. In addition, the glass element can be reliably prevented from being damaged, and the glass element can be easily handled.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a glass dosimeter according to the present invention.

FIG. 2 is an exploded perspective view showing the glass dosimeter of FIG.

3A is a side view of a clip of the glass dosimeter of FIG. 1, and FIG. 3B is an operation explanatory view of the clip.

FIG. 4 is a perspective view showing a rear side of the protective container of FIG. 2;

FIG. 5 is a perspective view showing sticking of a label to the protective container of FIG. 2;

FIG. 6 is a perspective view showing another embodiment in which the shape of the storage section of the protective container of FIG. 2 is changed.

FIG. 7 is a perspective view showing another embodiment in which the shape of the storage section of the protective container of FIG. 2 is changed.

FIG. 8 is an exploded perspective view showing a conventional glass dosimeter.

FIG. 9 is an exploded perspective view showing another example of a conventional glass dosimeter.

FIG. 10 is an exploded perspective view for explaining a method of using the glass dosimeter of FIG. 8;

FIG. 11 is an exploded perspective view for explaining a method of using the glass dosimeter of FIGS. 8 and 9;

[Explanation of symbols]

 50 glass dosimeter 60 holder 61 front cover 61A housing section 62 back cover 66 window 67γ-X-ray detection compensation filter 68 thermal neutron ray detection filter 69 positioning projection 70 clip 71 clip piece 74 safety pin 75 pin holding groove 76 protective container 77 accommodation part 77a, 77b positioning part 78 notch part 79 positioning groove part 80 edge part 81 glass element 81a, 81b notch part 82 label

Claims (9)

[Utility model registration claims] 1. A holder having one end rotatably connected to one another and a front cover and a back cover having a dosimeter filter attached to an inner surface thereof, and a protection held between the front cover and the back cover. A glass dosimeter comprising: a container; a glass element held by the protective container; and a label attached to the entire surface of the protective container so as to cover the glass element. 2. The apparatus according to claim 1, wherein the holder and the protective container are formed of a resin having a small mass coefficient.
Glass dosimeter as described. 3. The positioning cover according to claim 1, wherein a positioning protrusion is provided on an inner surface of the front cover and / or the back cover, and a positioning groove is formed in the protective container so as to fit into the positioning protrusion. Glass dosimeter. 4. The glass dosimeter according to claim 1, wherein the label is adapted to the outer dimension of the protective container. 5. The glass according to claim 1, wherein at least a part of the outer peripheral edge of the protective container is provided with a cutout portion capable of touching the adhesive surface side of the label. Dosimeter. 6. The label according to claim 1, further comprising a user name, a bar code for identifying the user, and a bar code for identifying the glass element.
Or the glass dosimeter according to 4. 7. The glass dosimeter according to claim 1, wherein a window for confirming a user name attached to the label is formed in the front cover. 8. The protective container is provided with an accommodating portion adapted to the shape of the glass element, and at least a part of the accommodating portion is provided with an alignment portion, wherein the glass element has The glass dosimeter according to claim 1, wherein a notch portion corresponding to the alignment portion is provided. 9. A clip is provided on the back side of the back cover, and a clip piece of the clip is provided with a pin holding groove for detachably holding a safety pin. The glass dosimeter according to claim 1.