JP6084130B2 - Discharge lamp packing structure - Google Patents

Description

  The present invention relates to a discharge lamp packaging structure.

As a light source of an exposure apparatus that forms a pattern of a semiconductor or a liquid crystal panel, a discharge lamp that can emit ultraviolet rays may be used.
Patent Document 1 discloses an example of a discharge lamp. The discharge lamp has a first sealing tube and a second sealing tube made of linear glass tubes that are spaced apart from each other while being coaxial with each other, and between the first sealing tube and the second sealing tube. A glass-made arc tube that is located and bulges to the outer peripheral side of the first seal tube and the second seal tube, and a pair of electrodes that are built in the arc tube and that discharge between them; A pair of caps respectively fixed to the ends of the first sealing tube and the second sealing tube and electrically connected to each electrode are provided. A rare gas such as Xe gas, Kr gas, and Ar gas is enclosed in this type of discharge lamp at a normal temperature and a pressure higher than atmospheric pressure.

  If the arc tube, the first sealing tube, or the second sealing tube of the discharge lamp is damaged, the rare gas may be ejected to the outside from the damaged portion, and glass fragments generated at the damaged portion may be scattered. . For this reason, careful attention is required for transporting and transporting a discharge lamp in which a high-pressure rare gas is sealed, and various proposals have been made regarding a packaging structure for storing the discharge lamp.

The packaging structure of Patent Document 1 includes a first container element and a second container element that can be brought into contact with and separated from each other, a hollow that holds the joined first container element and the second container element and maintains this joined state. A prismatic cylindrical member. Furthermore, on the opposing surfaces of the first container element and the second container element, concave portions having shapes corresponding to half portions of the discharge lamp (two portions located on both sides of the plane located on the axis of the discharge lamp) are respectively provided. It is formed.
Therefore, if the opposing surfaces of the first container element and the second container element are brought into contact with each other while the respective halves of the discharge lamp are accommodated in the recesses of the first container element and the second container element, the joining is performed. A discharge lamp is housed between the first container element and the second container element. If the first container element and the second container element are housed in the hollow prismatic cylindrical member, the joined state (discharge lamp housing state) of the first container element and the second container element can be maintained.

However, in the packaging structure of Patent Document 1, a high molding accuracy (shape accuracy) is required for the recesses (particularly, the portion for housing the arc tube) formed in the first container element and the second container element, and the sizes are different. The shape (size) of the recesses of the first container element and the second container element must be changed for each discharge lamp. If the shape of the concave portion is larger than the outer shape of the discharge lamp, the discharge lamp may rattle in the concave portion, and as a result, the arc tube, the first sealing tube, or the second sealing tube may be damaged. is there. Therefore, the packaging structure of Patent Document 1 has low versatility and tends to be expensive.
In addition, this type of packaging structure (first container element and second container element) is caused by dropping the first container element and the second container element onto the floor surface during transportation or transportation. In such a case, there is a possibility that the discharge lamp cannot be sufficiently protected.

The packaging structure shown in FIG. 12 can solve the above-described problems of the packaging structure of Patent Document 1.
This packing structure includes a resin sheet (air cushion) that can cover the entire discharge lamp, and a packing box. This resin sheet has flexibility, and a large number of bubbles are formed therein.
In order to store the discharge lamp in the packing box, first, the entire discharge lamp is wrapped with a resin sheet deformed into an annular state, and the annular state of the resin sheet is held with an adhesive tape attached to the resin sheet. The integrated discharge lamp and resin sheet are stored in a packing box.

Since the flexible resin sheet can be deformed into any shape, it can be applied to various types of discharge lamps having different sizes. Therefore, it is not necessary to change the shape (size) of the resin sheet for each discharge lamp having a different size. Therefore, the packaging structure of FIG. 12 is highly versatile and can keep costs low.
Moreover, the resin-made sheet | seat which has many air bubbles inside exhibits high impact absorption power. Therefore, it is possible to absorb a strong impact force (generated due to dropping the packaging box onto the floor surface during transportation or transportation).

Japanese Utility Model Publication No. 2-87779

However, there is no restricting portion for restricting the resin sheet from moving in the longitudinal direction of the discharge lamp between the resin sheet and the discharge lamp of the packing structure of FIG.
Therefore, for example, when an impact force is applied to the packing box, the resin sheet can slide in the longitudinal direction of the discharge lamp with respect to the discharge lamp, and the first sealing tube and the second sealing tube can be exposed. There is sex. If the first sealing tube or the second sealing tube is exposed, these parts may be damaged when these exposed portions come into contact with the inner surface of the packaging box.

  The present invention is a discharge lamp that is highly versatile and can keep costs low, and that can exhibit a high impact absorption capability, while effectively suppressing the displacement of a protective member attached to the discharge lamp. An object is to provide a packaging structure.

  The discharge lamp packaging structure of the present invention includes a first sealing tube and a second sealing tube made of linear glass tubes that are coaxially spaced from each other, and the first sealing tube and the second sealing tube. The first sealing tube has a shape that bulges to the outer peripheral side of the first sealing tube and the second sealing tube while being positioned between the sealing tubes, and the first sealing tube from its maximum diameter portion And a glass arc tube whose outer diameter gradually decreases as it approaches the second sealing tube, a pair of electrodes built in the arc tube that discharge between them, and the first And a pair of caps fixed to ends of the second sealing tube opposite to the arc tube, respectively, in a packing structure for packing a discharge lamp, the first sealing It can be attached to the outer peripheral surface of the tube, and when attached, one end is the first sealed from the maximum diameter portion of the arc tube. The first cushioning material that is in contact with the portion located on the side and that is flexible and injects gas into the inside, and can be attached to the outer peripheral surface of the second sealing tube. A second buffer material having flexibility and injecting a gas therein, the end portion of which contacts a portion located on the second sealing tube side from the maximum diameter portion of the arc tube, and the discharge And a packaging box capable of storing the lamp, the first cushioning material, and the second cushioning material in an integrated state.

  The first sealing tube and the second sealing tube, when viewed in the axial direction of the first sealing tube and the second sealing tube, the first sealing tube and the second sealing tube forming an annular shape centering on the axis line The arc tube may be positioned on the inner peripheral side from the outer peripheral surfaces of the one buffer material and the second buffer material.

  The other end of the first cushioning material and the second cushioning material may contact the inner surface of the packaging box.

  The first cushioning material and the second cushioning material extend along the axial direction of the first sealing tube and the second sealing tube, and the first sealing tube and the second sealing material. Lined along the circumferential direction of the tube and formed between a plurality of thin portions that are flexible and cannot be injected with the gas, and adjacent to the thin portions, the gas can be injected and is thicker than the thin portions. And a plurality of gas injection units.

  Mounted on the discharge lamp, the first inner cushioning material, and the second inner cushioning material integrated with each other while forming an annular shape centering on the axis of the first sealing tube and the second sealing tube. An outer cushioning material in which a gas is injected, and the outer cushioning material extends along a direction intersecting the axial direction of the first sealing tube and the second sealing tube, and Formed between a plurality of thin-walled portions that are incapable of injecting the gas of the outer cushioning material and are flexible along the direction orthogonal to the intersecting direction and the thin-walled portion adjacent to the outer cushioning material And a plurality of gas injection portions that are capable of injecting the gas of the outer cushioning material and are thicker than the thin-walled portion of the outer cushioning material.

  The rigidity of the packaging box may be higher in the axial direction of the first sealing tube and the second sealing tube than in the radial direction of the discharge lamp.

The packaging structure according to the present invention includes a first inner cushioning material and a second inner cushioning material, which are flexible and have gas injected therein, and are connected to the first sealing tube and the second sealing tube of the discharge lamp. Each is attached to the outer peripheral surface.
Since the first inner cushioning material and the second inner cushioning material can be deformed into any shape, they can be applied to various types of discharge lamps having different sizes. No need to change). Therefore, the packaging structure of the present invention is highly versatile and can keep costs low.
Moreover, the 1st inner side shock absorbing material and the 2nd inner side shock absorbing material by which gas was inject | poured inside exhibit high impact absorption power. Therefore, it is possible to absorb a strong impact force (generated due to dropping the packaging box on the floor surface during transportation or transportation) by the first inner cushioning material and the second inner cushioning material.
Moreover, the first inner cushioning material is attached to the discharge lamp in a state where one end of the first inner cushioning material is in contact with the portion located on the first sealing tube side from the maximum diameter portion of the arc tube, and the second inner cushioning material is The discharge lamp is mounted in a state where one end thereof is in contact with a portion located closer to the second sealing tube than the maximum diameter portion of the arc tube. Therefore, for example, even when an impact force is applied to the packing box, the first inner cushioning material and the second inner cushioning material do not shift (slide) to the arc tube side with respect to the discharge lamp. Therefore, the first sealing tube and the second sealing tube can be effectively protected by the first inner buffer material and the second inner buffer material.

It is a perspective view of the packaging box which accommodated the discharge lamp which is one Embodiment of this invention. It is a perspective view of a packing structure when a packing box is opened. It is a top view of a packing structure when a packing box is opened. It is sectional drawing which follows the IV-IV arrow line of FIG. It is a top view of a discharge lamp. It is an expanded view of a 1st inner side shock absorbing material. It is the figure seen in the VII arrow line direction of FIG. It is the figure seen in the VIII arrow line direction of FIG. It is a whole figure of the 2nd inside shock absorbing material. It is the figure seen in the X arrow line direction of FIG. It is an expanded view of an outer side buffer material. It is a general view which shows the packing structure of a prior art example.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS.
The discharge lamp 10 of the present embodiment can be used for various applications, and as an example, it can be used as a light source of an exposure apparatus (not shown) for forming a pattern such as a semiconductor or a liquid crystal panel.
The discharge lamp 10 includes a discharge vessel 11 made of quartz glass. The discharge vessel 11 includes a substantially spherical arc tube 12, cylindrical first sealing tube 13 and second sealing tube 14 connected to both ends of the arc tube 12, and the first sealing tube 13. And a base 17 and a base 18 fixed to the end of the second sealing tube 14 are integrally provided. As shown in the drawing, the central portion of the arc tube 12 constitutes a maximum diameter portion 12a having a maximum diameter (outer diameter) centered on the axis of the discharge lamp 10 (see L in FIG. 5). The diameter (outer diameter) of the arc tube 12 gradually decreases as it approaches the first sealing tube 13 and the second sealing tube 14 from the maximum diameter portion 12a. The first sealing tube 13 and the second sealing tube 14 are coaxial with each other, and both extend linearly. The discharge vessel 11 is filled with a rare gas such as Xe gas, Kr gas, or Ar gas at a normal temperature and a pressure higher than atmospheric pressure.
A pair of electrodes 16 are disposed inside the arc tube 12 so as to face each other. Metal caps 17 and 18 are attached to the ends of the first sealing tube 13 and the second sealing tube 14 on the side opposite to the arc tube 12. The base 17 and the electrode 16 on the first sealing tube 13 side are connected to each other by a conductive member (not shown) disposed inside the first sealing tube 13 and the arc tube 12. The electrodes 16 on the second sealing tube 14 side are connected to each other by a conductive member (not shown) disposed inside the second sealing tube 14 and the arc tube 12. The base 17 is detachable from a holder provided in the exposure apparatus, and this holder is connected to a power source (not shown) provided in the exposure apparatus. On the other hand, one end of a lead wire 19 is connected to the base 18. The other end of the lead wire 19 can be connected to the power source (ground). When the base 17 is connected to the holder and the other end of the lead wire 19 is connected to the power source, and power is supplied from the power source to the discharge lamp 10, a discharge occurs between the pair of electrodes 16, and the discharge lamp 10 Lights up (emits ultraviolet rays).

The packaging structure of the discharge lamp 10 of the present embodiment includes a packaging box 20, a first inner cushioning material 30 (first cushioning material), a belt 42, a second inner cushioning material 45 (second cushioning material), and an outer cushioning material 60. It has.
The packaging box 20 that can store the discharge lamp 10 is formed of an elastic resin (for example, polypropylene (PP)). The packaging box 20 has a rectangular parallelepiped main body portion 21 whose one surface is open, three inner lids 22 projecting from three sides of the opening edge portion of the main body portion 21, and the remaining one side of the opening edge portion. An outer lid 23 and a folded-back portion 24 projecting from a side edge portion (free end portion) of the outer lid 23 are provided. The inner lid 22 and the outer lid 23 are rotatable around a connection portion with the main body portion 21. Further, two fasteners 25 are fixed to the side surface of the main body portion 21, and two fasteners 26 corresponding to the respective fasteners 25 are attached to the folded portion 24.

The first inner cushioning material 30, which is an integrally molded product made of polyethylene, has a substantially rectangular shape in the unfolded state, and the whole has flexibility.
The entire peripheral edge portion of the first inner cushioning material 30 is a peripheral thin wall portion 31 through which gas cannot be injected. In addition, a plurality of short direction thin portions 32 (thin portions) formed side by side in the longitudinal direction (left and right direction in FIG. 6) of the first inner cushioning material 30 are formed on the inner peripheral side of the peripheral thin portion 31 (see FIG. 6 shows only two rows). Each of the thin-walled thin portions 32 is constituted by a plurality of thin-walled thin portions 33 arranged in the short-side direction (vertical direction in FIG. 6) of the first inner cushioning material 30. Injectable. In addition, a longitudinal thin portion 35 extending along the longitudinal direction of the first inner cushioning material 30 is formed on the inner peripheral side of the peripheral thin portion 31. The longitudinal thin portion 35 is constituted by a plurality of elongated thin portions 36 arranged in the longitudinal direction of the first inner cushioning material 30, and each elongated thin portion 36 cannot inject gas. An injection port 37 projects from the peripheral edge of the first inner cushioning material 30. The tip of the injection port 37 is an open end that can be deformed into an open state and a sealed state. Further, in the portion located on the inner peripheral side of the peripheral thin portion 31 of the first inner cushioning material 30, the portions excluding the short-side thin portion 32 and the long-side thin portion 35 are all in communication with each other and the injection port 37. The hollow gas injection part 39 which communicates with is constituted. Furthermore, the gas injection part 39 has a plurality of short direction injection parts 40 extending in the short direction of the first inner cushioning material 30 (only three are shown in FIG. 6). Each short direction injection part 40 is a portion located between the longitudinal direction both ends of the peripheral thin part 31 and the short direction thin part 32 adjacent to the both ends, and the adjacent short direction thin part. 32 is formed in each part located between 32.

When the gas injection part 39 of the first inner cushioning material 30 is in a (substantially) vacuum state, the first inner cushioning material 30 is entirely thin (not shown).
On the other hand, when nitrogen is injected into the gas injection part 39 through the injection port 37 and the open end of the injection port 37 is sealed, the gas injection part 39 (each short direction injection part 40) swells as shown in the figure, and the peripheral thin wall It becomes thicker than the portion 31, the transverse thin portion 32, and the longitudinal thin portion 35. When the gas injection part 39 (each short direction injection part 40) swells, it becomes difficult to bend the gas injection part 39 (each short direction injection part 40). On the other hand, since each thin-walled portion 32 in the short direction does not swell (since nitrogen is not injected), each thin-walled portion 32 in the short direction can easily be extended along its extending direction (the short direction of the first inner cushioning material 30). It is possible to bend it. Therefore, as shown in FIG. 2 and FIG. 3, each of the thin-walled portions 32 in the short direction is bent so that the first inner cushioning material 30 is substantially annular (C-shaped, corresponding to “annular” in the claims). Thus, it is possible to attach the first inner cushioning material 30 to the outer peripheral surfaces of the first sealing tube 13 and the base 17. Further, if a belt 42 made of a flexible material is wound around the outer peripheral surface of the first inner cushioning material 30 and both ends of the belt 42 are fixed to each other, the substantially annular state of the first inner cushioning material 30 is maintained by the belt 42. Therefore, unless the belt 42 is removed, there is almost no possibility that the first inner cushioning material 30 is detached from the first sealing tube 13 and the base 17.
Further, when the first inner cushioning material 30 is mounted on the outer peripheral surfaces of the first sealing tube 13 and the base 17, as shown in FIGS. 2 and 3, one end in the longitudinal direction of the first inner cushioning material 30 is provided. The portion is brought into contact with a portion located on the first sealing tube 13 side with respect to the maximum diameter portion 12a on the surface of the arc tube 12, and the other end portion in the longitudinal direction of the first inner cushioning material 30 is disposed outside the base 17. (Right side of FIG. 3). Thus, if one end part of the 1st inner side shock absorbing material 30 and the surface (part located in the 1st sealing pipe | tube 13 side from the largest diameter part 12a) of the arc tube 12 are made to contact, it will temporarily be 1st inner side buffering. Even if the material 30 is pressed toward the arc tube 12 along the first sealing tube 13, the relative position of the first inner cushioning material 30 in the direction of the axis L with respect to the discharge lamp 10 does not change. Further, when viewed along the axis L of the discharge lamp 10, the outer peripheral surface of the first inner buffer material 30 is positioned on the outer peripheral side of the outer peripheral surface (maximum diameter portion 12a) of the arc tube 12 (of the first inner buffer material 30). The maximum diameter portion 12a of the arc tube 12 is located on the inner peripheral side from the outer peripheral surface).

The second inner cushioning material 45, which is an integrally molded product made of polyethylene, has an annular shape, and the whole has flexibility.
The entire peripheral edge portion of the second inner cushioning material 45 is a peripheral thin wall portion 46 through which gas cannot be injected. Further, in the vicinity of the center in the longitudinal direction of the second inner cushioning material 45 in the axial direction (vertical direction in FIG. 9), a thin circumferential portion extending along the circumferential direction (left and right direction in FIG. 9) of the second inner cushioning material 45. 47 is formed. The circumferential thin portion 47 is constituted by a plurality of elongated thin portions 48 arranged in the circumferential direction, and each elongated thin portion 48 cannot inject gas. Four long axis direction thin portions 50 (thin portions) arranged in the circumferential direction of the second inner cushioning material 45 are formed on the inner peripheral side portion of the peripheral thin portion 46. Each long axial thin portion 50 extends over the entire area of the second inner cushioning material 45 in the axial direction. An inner peripheral side portion of the peripheral thin portion 46 is divided into two regions by a circumferential thin portion 47. One short axial direction thin portion 51 (thin portion) is formed in one of the regions (the region above the circumferential thin portion 47 in FIG. 9). The short axial thin portion 51 terminates at a position where it is connected to the circumferential thin portion 47 (the thin thin portion 48) (see FIG. 9). The long axial direction thin portion 50 and the short axial direction thin portion 51 are portions where gas cannot be injected. Further, in the other region of the inner peripheral side portion of the peripheral thin portion 46 (the region below the circumferential thin portion 47 in FIG. 9), a slit 52 located on the extension line of the short axial thin portion 51 is formed. It is. An inlet 54 projects from the peripheral edge of the second inner cushioning material 45. The front end of the inlet 54 is an open end that can be deformed into an open state and a sealed state. Further, the portion excluding the circumferential thin portion 47, the long axial thin portion 50, and the short axial thin portion 51 in the portion located on the inner peripheral side of the peripheral thin portion 46 of the second inner cushioning member 45 is A hollow gas injection part 55 is formed which communicates with the injection port 54 as a whole. Furthermore, the gas injection part 55 has five axial injection parts 56 extending in the axial direction of the second inner cushioning material 45. The axial injection portion 56 includes three axial injection portions 56 positioned between the adjacent long axial thin portions 50, the long axial thin portion 50 adjacent to the short axial thin portions 51 and the slits 52. And two axial injection portions 56 positioned between the two.

When the gas injection portion 55 of the second inner cushioning material 45 is in a (substantially) vacuum state, the second inner cushioning material 45 is entirely thin (not shown).
On the other hand, when nitrogen is injected into the gas injection portion 55 through the injection port 54 and the opening end of the injection port 54 is sealed, the gas injection portion 55 (each axial direction injection portion 56) swells as shown in the drawing, and the peripheral thin wall It becomes thicker than the part 46, the circumferential thin part 47, the long axial thin part 50, and the short axial thin part 51. When the gas injection part 55 (each axial injection part 56) swells, it is difficult to bend the gas injection part 55 (each axial injection part 56). On the other hand, since each long axial direction thin part 50 and short axial direction thin part 51 do not swell (because nitrogen is not injected), each long axial direction thin part 50 and short axial direction thin part 51 have the It can be easily bent along the extending direction (the axial direction of the second inner cushioning material 45). Therefore, when nitrogen is injected into the gas injection portion 55, the second inner cushioning material 45 is annular as shown in FIG. 10 and the like (however, the slit 52 is formed in the portion located on the injection port 54 side from the circumferential thin portion 47). So it is C-shaped).
The second inner cushioning material 45 thus annularly formed (inflated) is inserted into the center hole thereof with the second sealing tube 14 and the base 18, so that the inner peripheral surface thereof is the second sealing tube. 14 and the outer peripheral surface of the base 18 can be attached to the outer peripheral surface of the second sealing tube 14 and the base 18 (see FIG. 4). Further, when the second inner cushioning material 45 is mounted on the outer peripheral surfaces of the second sealing tube 14 and the base 18, as shown in FIGS. 2 and 3, one end in the longitudinal direction of the second inner cushioning material 45. And the other end of the second inner cushioning material 45 in the longitudinal direction on the outer side of the base 18. (Left side in FIG. 3). Thus, if one end part of the 2nd inner side shock absorbing material 45 and the surface (part located in the 2nd sealing pipe | tube 14 side from the largest diameter part 12a) of the arc tube 12 are made to contact, it will temporarily be 2nd inner side buffering. Even if the material 45 is pressed toward the arc tube 12 along the second sealing tube 14, the relative position of the second inner cushioning material 45 in the axis L direction with respect to the discharge lamp 10 does not change. Further, when viewed along the axis L of the discharge lamp 10, the outer peripheral surface of the second inner buffer material 45 is positioned on the outer peripheral side of the outer peripheral surface (maximum diameter portion 12a) of the arc tube 12 (of the second inner buffer material 45). The maximum diameter portion 12a of the arc tube 12 is located on the inner peripheral side from the outer peripheral surface (see FIG. 4). Further, at this time, the lead wire 19 of the discharge lamp 10 is pulled out to the outside of the second inner cushioning material 45 through the slit 52 (see FIGS. 2 and 3).

The outer cushioning material 60, which is an integrally molded product made of polyethylene, has a structure similar to that of the first inner cushioning material 30. The outer cushioning material 60 has a substantially rectangular shape in the unfolded state, and the longitudinal direction (left-right direction in FIG. 11) and the lateral direction (vertical direction in FIG. 11) are both the longitudinal direction of the first inner cushioning material 30. And longer than the short direction. Further, the entire outer cushioning material 60 is flexible.
The entire peripheral edge portion of the outer cushioning material 60 is a peripheral thin wall portion 61 through which gas cannot be injected. In addition, on the inner peripheral side of the peripheral thin portion 61, there are formed short direction thin portions 62 that are arranged in multiple rows in the longitudinal direction of the outer cushioning material 60 (left and right direction in FIG. 11). Only the column is shown). Each of the thin-walled portions 62 in the short direction is composed of six thin and long thin portions 63 arranged in the short direction of the outer cushioning material 60 (the vertical direction in FIG. 11), and the thin and thin portions 63 cannot inject gas. It is. In addition, on the inner peripheral side of the peripheral thin portion 61, longitudinal thin portions 65 extending along the longitudinal direction of the outer cushioning material 60 are formed in three rows. Each longitudinal thin portion 65 is constituted by a plurality of elongated thin portions 66 arranged in the longitudinal direction of the outer cushioning material 60, and each elongated thin portion 66 cannot inject gas. An injection port 67 projects from the peripheral edge of the outer cushioning material 60. The tip of the injection port 67 is an open end that can be deformed into an open state and a sealed state. Further, in the portion located on the inner peripheral side of the peripheral thin portion 61 of the outer cushioning material 60, the portions excluding the short-side thin portion 62 and the long-side thin portion 65 communicate with each other and communicate with the injection port 67. The hollow gas injection part 69 which comprises is comprised. Further, the gas injection part 69 has a large number of short direction injection parts 70 (only six are shown in FIG. 11) extending in the short direction of the outer cushioning material 60. Each short direction injecting portion 70 includes a portion located between the both ends in the longitudinal direction of the peripheral thin portion 61 and the short direction thin portion 62 adjacent to the both ends, and an adjacent short direction thin portion. 62, respectively.

When the gas injection part 69 of the outer cushioning material 60 is in a (substantially) vacuum state, the entire outer cushioning material 60 is thin (not shown).
On the other hand, when nitrogen is injected into the gas injection portion 69 through the injection port 67 and the opening end of the injection port 67 is sealed, the gas injection portion 69 (each short-direction injection portion 70) swells as shown in the drawing, and the peripheral edge is thin. It becomes thicker than the portion 61, the transverse thin portion 62, and the longitudinal thin portion 65. When the gas injection part 69 (each short direction injection part 70) swells, it becomes difficult to bend the gas injection part 69 (each short direction injection part 70). On the other hand, since each thin direction thin part 62 does not swell (since nitrogen is not injected), each short direction thin part 62 is easily bent along the extension direction (the short direction of the outer cushioning material 60). It is possible. Therefore, as shown in FIG. 2 and FIG. 3, the outer cushioning material 60 is made substantially C-shaped by bending each of the short-side thin portions 62 so that the inner lid 22 and the outer lid 23 are opened. It is possible to arrange (lay) the outer cushioning material 60 along the inner surface of the main body 21 of a certain packing box 20.
As shown in FIGS. 2 and 3, the discharge lamp 10, the first inner cushioning material 30, the belt 42, and the first inner cushioning material 60 are arranged on the inner surface (the upper surface in FIG. 2) of the outer cushioning material 60. It is possible to mount the integrated body of the two inner cushioning materials 45 in a state where the direction of the axis L of the discharge lamp 10 and the longitudinal direction of the outer cushioning material 60 are matched. At this time, the end on the base 17 side of the first inner cushioning material 30 and the end on the base 18 side of the second inner cushioning material 45 are in contact with both ends in the longitudinal direction of the inner surface of the main body 21.
Furthermore, as shown in FIG. 4, when the entire outer cushioning material 60 is deformed into a substantially annular shape (corresponding to “annular” in the claims) while bringing both ends of the outer cushioning material 60 in the short direction closer to each other, The inner peripheral surface of the outer cushioning material 60 is in contact with the outer circumferential surfaces of the one inner cushioning material 30 and the second inner cushioning material 45.
In this state, the inner lid 22 of the packaging box 20 is folded back to the inside of the main body portion 21, the opening of the main body portion 21 is closed by the outer lid 23, and the two fasteners 26 on the folded portion 24 side are further attached to the main body portion 21 side. If the two fasteners 25 are respectively engaged, the packing box 20 is closed as shown in FIG. 1, and the discharge lamp 10, the first inner cushioning material 30, the belt 42, and the second inner cushioning are placed inside the packing box 20. The integral material 45 and the outer cushioning material 60 are completely stored. Note that the injection ports 37, 54, and 67, which are the hardest portions of the first inner cushioning material 30, the second inner cushioning material 45, and the outer cushioning material 60, are prevented from contacting the surface of the discharge vessel 11. Is ideal.

When the discharge lamp 10 is housed in the packaging box 20 in this way, one end of the first inner cushioning material 30 is positioned on the surface of the arc tube 12 (on the first sealing tube 13 side from the maximum diameter portion 12a). And the other end of the first inner cushioning material 30 contacts one end of the inner surface of the main body 21 in the longitudinal direction (see FIG. 3). In addition, one end of the second inner cushioning material 45 is in contact with the surface of the arc tube 12 (a part located on the second sealing tube 14 side from the maximum diameter portion 12a), and the second inner cushioning material 45 The other end of 45 contacts the other end in the longitudinal direction of the inner surface of the main body 21 (see FIG. 3). Further, when the discharge lamp 10 is housed in the packaging box 20 in the above-described manner, each short-side injection part 40 of the first inner cushioning material 30 and each axial injection part 56 of the second inner cushioning material 45 are each of the outer cushioning material 60. Although it is in contact with the short direction injection part 70, the extension direction of the short direction injection part 40 and the axial direction injection part 56 intersects the extension direction of the short direction injection part 70 (substantially orthogonal), so the short direction injection A strong frictional resistance is generated between the portion 40 and the axial direction injection portion 56 and the short direction injection portion 70.
Therefore, when the longitudinal direction of the packaging box 20 (the direction of the axis L of the discharge lamp 10) is directed in the vertical direction, or due to dropping the packaging box 20 onto the floor surface, an impact force is applied to the packaging box 20. Even in this case, the first inner cushioning material 30 and the second inner cushioning material 45 are not displaced (slid) in the direction of the axis L with respect to the discharge lamp 10. Therefore, the first inner tube 30 and the second inner buffer 45 can effectively protect the first sealing tube 13 and the second sealing tube 14.

  The first inner cushioning material 30, the second inner cushioning material 45, and the outer cushioning material 60 are each composed of a laterally thin portion 32, a longitudinal thin portion 35, a circumferential thin portion 47, a long axial thin portion 50, and a short axial portion. Since the thin-axis-direction thin portion 51, the slit 52, the short-side thin portion 62, and the longitudinal-direction thin portion 65 are provided, it can be deformed into any shape. Moreover, the 1st inner side buffer material 30 (gas injection part 39), the 2nd inner side buffer material 45 (gas injection part 55), the outer side buffer material 60 (by changing the injection amount of nitrogen with respect to the gas injection parts 39, 55, 69 Since the thickness of the gas injection part 69) can be changed, the first inner cushioning material 30, the second inner cushioning material 45, and the outer cushioning material 60 can correspond to various types of discharge lamps having different sizes. Therefore, it is not necessary to change the shapes (sizes) of the first inner cushioning material 30, the second inner cushioning material 45, and the outer cushioning material 60 for each discharge lamp having a different size. Therefore, the packaging structure of this embodiment has high versatility and can keep costs low.

The first inner buffer material 30 having the gas injection part 39, the second inner buffer material 45 having the gas injection part 55, and the outer buffer material 60 having the gas injection part 69 exhibit a high impact absorbing power. Therefore, a strong impact force generated in the packaging box 20 (due to dropping the packaging box 20 onto the floor surface, etc.) is absorbed by the first inner cushioning material 30, the second inner cushioning material 45, and the outer cushioning material 60. Is possible.
As described above, the first sealing tube 13 and the second sealing tube 14 can be effectively protected by the first inner buffer material 30 and the second inner buffer material 45 (the first inner buffer material 30 and the second inner buffer material 30). Since the inner cushioning material 45 is not displaced in the direction of the axis L with respect to the discharge lamp 10), the first sealing tube 13 and the second sealing tube 14 are damaged when an impact force is applied to the packaging box 20. The fear is small. Furthermore, the first inner buffer material 30 and the second inner buffer material 45 are not displaced in the axis L direction with respect to the discharge lamp 10, thereby protecting the first sealing tube 13 and the second sealing tube 14. In addition, since the entire discharge lamp 10 is positioned in the packaging box 20, the buffering capacity by the first inner cushioning material 30, the second inner cushioning material 45, and the outer cushioning material 60 is improved.
Moreover, when the inner peripheral surface of the outer cushioning material 60 comes into contact with the outer circumferential surfaces of the first inner cushioning material 30 and the second inner cushioning material 45, the arc tube 12 moves from the inner circumferential surface of the outer cushioning material 60 to the inner circumferential side. Separated (see FIG. 3). Therefore, the risk of the arc tube 12 being damaged when an impact force is generated in the packaging box 20 is smaller (than when the arc tube 12 is in contact with the inner peripheral surface of the outer cushioning material 60).

  Further, since the first inner cushioning material 30 and the second inner cushioning material 45 are attached to the first sealing tube 13 and the second sealing tube 14 in an annular (substantially annular) state, When the longitudinal direction (the direction of the axis L of the discharge lamp 10) is directed in the vertical direction, the discharge lamp 10 is placed from the side surfaces (cuts) of the first inner cushioning material 30 and the second inner cushioning material 45 inside the packing box 20. There is no attempt to slip out of the inner buffer material 30 or the second inner buffer material 45 (tilt in the packing box 20).

Further, since the first inner cushioning material 30 and the second inner cushioning material 45 are made of polyethylene, the first inner cushioning material 30 and the second inner cushioning material 45 are the arc tube 12, the first sealing tube 13, and the first Even when the surface of the second sealing tube 14 is contacted with a strong force, when the first inner buffer material 30 and the second inner buffer material 45 are removed from the discharge lamp 10, the first sealing tube 13, the second The sticking marks of the first inner buffer material 30 and the second inner buffer material 45 hardly remain on the surfaces of the sealing tube 14 and the arc tube 12. If the sticking trace remains, the arc tube 12, the first sealing tube 13, and the second sealing tube 14 may be damaged starting from the sticking trace when the discharge lamp 10 is caused to emit light (particularly, particularly). If the pressure of the rare gas sealed in the arc tube 12 is high, the risk of explosion increases). However, in this embodiment, there is little possibility that such a problem will occur.
In addition, a protective sheet (not shown) that cannot exert a buffer function (almost) and hardly adheres to the surface of the discharge vessel 11 between the first inner buffer material 30 and the second inner buffer material 45 and the surface of the discharge lamp 10. The first inner cushioning material 30 and the second inner cushioning material 45 may be in non-contact with the surface of the discharge vessel 11 with an omission).

Furthermore, in this embodiment, nitrogen is injected into the first inner buffer material 30 (gas injection portion 39), the second inner buffer material 45 (gas injection portion 55), and the outer buffer material 60 (gas injection portion 69). Compared to the case of injecting other gases, the first inner buffer material 30 (gas injection part 39), the second inner buffer material 45 (gas injection part 55), and the outer buffer material 60 (gas injection part 69) were injected. There is little possibility that gas will leak unintentionally (each gas injection part 39, 55, 69 will squeeze).
If high purity nitrogen is injected into the first inner buffer material 30 (gas injection part 39), the second inner buffer material 45 (gas injection part 55), and the outer buffer material 60 (gas injection part 69), a part of When nitrogen leaks, the leaked nitrogen has a high purity and contains almost no impurities, and thus does not adversely affect the discharge vessel 11 formed of quartz glass. If a gas containing impurities is injected and leaks unintentionally, the impurities adhere to the discharge vessel 11 formed of quartz glass, and when the discharge lamp 10 emits light, the arc tube 12 and the first The sealing tube 13 and the second sealing tube 14 may be devitrified and damaged.

As mentioned above, although this invention was demonstrated using the said embodiment, this invention can be implemented, giving various deformation | transformation.
For example, the second inner buffer material 45 may be mounted on the first sealing tube 13 and the base 17, or the first inner buffer material 30 may be mounted on the second sealing tube 14 and the base 18.
Further, the outer cushioning material 60 may be omitted, and the outer peripheral surfaces of the first inner cushioning material 30 and the second inner cushioning material 45 may be brought into contact with the inner surface of the packaging box 20.
Further, the end of the first inner cushioning material 30 or the second inner cushioning material 45 (on the side opposite to the arc tube 12) may be separated (slightly) from the inner surface of the main body 21.
Further, the contact position of one end of the first inner cushioning material 30 with respect to the surface of the arc tube 12 may be a position different from the illustrated position as long as it is closer to the first sealing tube 13 than the maximum diameter portion 12a. Similarly, the contact position of one end of the second inner cushioning material 45 with respect to the surface of the arc tube 12 may be a position different from the illustrated position as long as it is closer to the second sealing tube 14 than the maximum diameter portion 12a.

Furthermore, the extending direction of the short direction injection part 40 and the axial direction injection part 56 and the extending direction of the short direction injection part 70 do not need to be (substantially) orthogonal to each other as long as they intersect each other.
Further, the cross-sectional shapes of the first inner cushioning material 30 and the second inner cushioning material 45 may be a substantially annular shape that is not a substantially circular shape but a substantially triangular or substantially rectangular shape. Further, the first inner cushioning material 30 is attached to the discharge lamp 10 (for example, the first sealing tube 13 and the base 17) in a complete annular manner, or the outer cushioning material 60 is constructed in a completely annular manner. You may store in.
Further, a gas other than nitrogen may be injected into at least one of the first inner buffer material 30, the second inner buffer material 45, and the outer buffer material 60.
Further, the rigidity of the packing box 20 in the longitudinal direction (direction parallel to the axis L) may be higher than the rigidity in the short direction (radial direction of the discharge lamp 10). If it does in this way, the 1st inner side shock absorbing material 30 and the 2nd inner side shock absorbing material 45 which respectively contact the both ends of the longitudinal direction of the inner surface of the packaging box 20 (main-body part 21) will be by the direction of an axis L with respect to the discharge lamp 10. Misalignment is difficult. Therefore, the possibility that the arc tube 12 is damaged when an impact force is generated in the packaging box 20 is further reduced.

DESCRIPTION OF SYMBOLS 10 Discharge lamp 11 Discharge vessel 12 Arc tube 12a Maximum diameter part 13 First sealing tube 14 Second sealing tube 16 Electrode 17 18 Base 19 Lead wire 20 Packing box 21 Main body part 22 Inner lid 23 Outer lid 24 Folded part 25 26 Fastener 30 First inner cushioning material (first cushioning material)
31 Peripheral thin portion 32 Short direction thin portion (thin portion)
33 Thin and long thin portion 35 Longitudinal thin portion 36 Thin and thin portion 37 Inlet 39 Gas injection portion 40 Short direction injection portion 42 Belt 45 Second inner cushioning material (second cushioning material)
46 Thin peripheral portion 47 Thin circumferential portion 48 Thin thin portion 50 Long thin axial portion (thin portion)
51 Short dimension axial direction thin part (thin part)
52 slit 54 inlet 55 gas injection part 56 axial injection part 60 outer cushioning material 61 peripheral thin part 62 short side thin part 63 thin thin part 65 longitudinal thin part 66 thin thin part 67 inlet 69 gas injection part 70 short Hand injection part L Discharge lamp axis

Claims (6)

A first sealing tube and a second sealing tube made of linear glass tubes spaced coaxially with each other;
It is located between the first sealing tube and the second sealing tube, and has a shape that bulges to the outer peripheral side of the first sealing tube and the second sealing tube, and own An arc tube made of glass whose outer diameter gradually decreases as it approaches the first sealing tube and the second sealing tube from the maximum diameter portion,
A pair of electrodes built in the arc tube for discharging between the two;
A pair of caps respectively fixed to ends of the first sealing tube and the second sealing tube opposite to the arc tube;
In a packaging structure for packaging a discharge lamp comprising:
It can be attached to the outer peripheral surface of the first sealing tube, and when attached, one end portion contacts a portion located on the first sealing tube side from the maximum diameter portion of the arc tube. A first cushioning material having flexibility and having gas injected therein;
It can be attached to the outer peripheral surface of the second sealing tube, and when it is attached, one end of the arc tube comes into contact with a portion located on the second sealing tube side from the maximum diameter portion of the arc tube. A second cushioning material having flexibility and having gas injected therein;
A packaging box capable of storing the discharge lamp, the first buffer material and the second buffer material in an integrated state;
A discharge lamp packaging structure comprising: In the discharge lamp packaging structure according to claim 1,
The first sealing tube and the second sealing tube, when viewed in the axial direction of the first sealing tube and the second sealing tube, the first sealing tube and the second sealing tube forming an annular shape centering on the axis line A discharge lamp packaging structure in which the arc tube is located on the inner peripheral side of the outer peripheral surface of one buffer material and the second buffer material. In the packaging structure of the discharge lamp according to claim 1 or 2,
The discharge lamp packaging structure in which the other end of the first cushioning material and the second cushioning material is in contact with the inner surface of the packaging box. In the discharge lamp packaging structure according to any one of claims 1 to 3,
The first cushioning material and the second cushioning material are
Injecting the gas extending along the axial direction of the first sealing tube and the second sealing tube and arranged along the circumferential direction of the first sealing tube and the second sealing tube A plurality of thin portions impossible and flexible;
A plurality of gas injection portions formed between adjacent thin wall portions, capable of injecting the gas and being thicker than the thin wall portions;
A discharge lamp packaging structure comprising: In the discharge lamp packaging structure according to any one of claims 1 to 4,
Mounted on the discharge lamp, the first inner cushioning material, and the second inner cushioning material integrated with each other while forming an annular shape centering on the axis of the first sealing tube and the second sealing tube. Possible, with an outer cushioning material with gas injected inside,
The outer cushioning material is
Inability to inject the gas of the outer cushioning material that extends along a direction intersecting the axial direction of the first sealing tube and the second sealing tube and is aligned along a direction orthogonal to the intersecting direction And a plurality of thin portions having flexibility,
A plurality of gas injection portions formed between the thin wall portions adjacent to each other of the outer cushioning material and capable of injecting the gas of the outer cushioning material and being thicker than the thin wall portion of the outer cushioning material;
A discharge lamp packaging structure comprising: In the discharge lamp packaging structure according to any one of claims 1 to 5,
The packaging structure of the discharge lamp is such that the rigidity of the packaging box is higher in the axial direction of the first sealing tube and the second sealing tube than in the radial direction of the discharge lamp.

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