JPS592889B2 - Chiyokusen Keishia Shinsenkou Lamp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates generally to linear multiple photographic flash lamp arrays, and more particularly to multiple reflector units therefor.

A double-row linear multiple photographic flash lamp array having a plurality of lamp-reflector units or modules facing outwardly in opposite directions is disclosed, for example, in U.S. Pat.
No. 35, which is well known in the art.

The lamp-reflector modules in such a linear photographic flash lamp array are generally arranged in two parallel rows, with the lamps and reflectors of one row being staggered with respect to the lamps and reflectors of the other row. and the reflectors in one row are preferably nested back-to-back with the reflectors in the other row, thereby reducing the thickness required for two rows considerably to the thickness required for one row. Make it about the same or slightly larger.

Also, for economic reasons and convenience during handling and assembly, reflectors are commonly used for at least each row of such linear lamp arrays. In the simplest arrangement, a nested back-to-back array of reflectors is formed from a common or single piece of sheet material, such as a sheet of plastic or aluminum foil, by folding or corrugating it. , opposite sides of the same sheet material after molding (covered with aluminum if required to be reflective) form the reflector for the separate lamp.

However, such single-sheet reflector units have the additional disadvantage that the shape of each reflective surface on each side of the single reflector band is not optimal for best light reflection properties and performance. The intense heat generated by the flash of the photographic flash lamp in the adjacent reflector on the opposite side of the reflector unit subjects each of the reflectors to considerable warping and distortion, which in turn reduces the required light reflection performance. It also has the disadvantage of significantly inhibiting In other forms of reflector arrays known in the art, each row of reflectors on each side of the lamp array is made of aluminum foil or plastic, such as by vacuum forming, according to methods well known to those skilled in the art. are formed as separate reflector band members or units from a single sheet of reflector strips or units. In this case, the single sheet is
It is then coated with aluminum to allow light reflection. Also, two such reflector band units are nested together back to back without any sharp interconnection or attachment thereof. The nested set of reflectors is then inserted into position in the space between the two staggered rows of photographic flash lamps of the array. However, in such conventional two-piece reflector arrays, the unrestrained reflector band units are free to move and come into contact with each other, with the result that the contacting reflectors are exposed to the ground by flashes from adjacent lamps. They are prone to being exposed to the thermal distortions mentioned above.
Therefore, in order to avoid and ensure such reflector distortion, in conventional such two-piece reflector reflector devices, between two opposing back-to-back reflector units, e.g. It was common to intervene with suitable thermal insulation barriers, such as asbestos sheets, or heating and insulation elements. However, the use of such heating and cutting elements not only requires additional separate components in the array structure, but also requires additional assembly operations, which increase the manufacturing cost of the array device. . In addition, vacuum-formed sheet type reflector band members &
ζ Requires the use of relatively expensive sheet materials, thereby increasing the overall manufacturing cost of the reflector assembly. Moreover, because they are flimsy, they are often difficult to handle. They are not only susceptible to damage during assembly and assembly, but also during various secondary manufacturing operations, requiring through-holes and slits to be spaced apart and requiring maintenance. Reflectors produced in this way are therefore often of low quality as far as their light reflection properties are concerned. It has also been proposed to vacuum form reflectors on both sides of the array as a single unit from a single sheet of aluminum foil or plastic sheet material.

In this case, the plastic sheet material or the like is later coated with aluminum. It is also folded inside out along one or more fold lines running parallel between the two rows of reflectors. When folded, the two rows of reflector units are back-to-back or back-to-back to form a nest. However, such single-sheet vacuum-formed reflector units suffer from much the same drawbacks as described above for two-piece vacuum-formed reflector assemblies. In yet another reflector array employed in the two row photographic flash lamp array described above, the two rows of reflectors are made integrally by pouring and molding a piece of material such as plastic; All of each lamp reflector is generated at once. However, in order to maintain sufficient thermal stability to resist thermal distortion of each reflector due to the flashing of adjacent flash lamps in the array, such single injection molded reflector units typically require significant It must be made of thicker and relatively expensive materials, thereby increasing the volume, weight, and overall manufacturing cost of the array installation. It is therefore an object of the present invention to have a novel multi-reflector unit which has excellent optical properties and convenience of handling, and whose light reflecting properties are not disturbed by the flashing of lamps in the arrangement. A column linear photographic flash lamp array device is provided. It is another object of the present invention to provide a novel, relatively inexpensive and lightweight construction for a two-row linear photographic flash lamp array whose light reflection performance is not adversely affected by the flashing of lamps within the array. To provide multiple reflector units. Another object of the present invention is to provide a linear photographic lamp array multiple reflector unit that is easy and inexpensive to manufacture, extremely convenient to handle, and easy to assemble.

Briefly stated, according to one form of the invention:
The reflector array in the two-row linear photographic flash lamp array has a pair of complementary strip-like thin-walled reinforced plastic molded reflector panels, each having an L row of reflective recesses for each lamp. reflectors, and are arranged back-to-back in aligned mutually fixed relationship to form a single unitary rigid structure, with the reflectors facing outwardly in opposite directions and arranged in a staggered manner. , arranged in a nest, but always spaced apart by a predetermined distance and never in contact with each other.

According to another form of the invention, the two complementary reflector panels are provided with interconnection means for arranging and holding the panels together as a unit in a suitable aligned assembly relationship and for holding the panels fixedly connected to the spaced apart shoulders. a device for arranging the panels in a predetermined spaced back-to-back relationship abutting each other in the assembled state of the panels, the reflectors of each of the panels being free from spaced contact with those of the other panel; .

Other objects and advantages of the invention will become apparent from the following detailed description and accompanying drawings.

Referring to the drawings, an array of photographic flash lamps comprising the present invention includes two parallel rows of compact type photographic flash lamps 1 of generally tube shape, standing upright as shown in FIG. In parallel, a relatively thin but substantially rigid lamp support and contact blade 2 is supported. The two parallel rows of lamps can be said to be zigzag as a whole, since the lamps of one row are partially nested between the lamps of the other row.

The axes of the individual lamps 1 are, of course, substantially parallel, and the plane passing through the axes of the lamps of each row is approximately parallel to the plane of the contacting blades 2. The number of photographic flash lamps 1 in this array is not critical, but in the case shown:
Ten lamps 1 are arranged in two rows of five lamps, each on each side of a supporting and contacting blade 2. Each lamp has a pair of lead wires 3 which are electrically connected and fixed in a suitable manner, for example by soldering, to lamp contact areas 4 of adjacent pairs of blades 2. The lamp 1 for photographic flashing is tube-shaped, baseless, and comprises, as is well known, a hermetically sealed tube-shaped bulb envelope 5, which envelope contains an ignition filament and a filament-shaped bulb. Contains combustible materials, such as zirconium, aluminum, hafnium fragment foils. It ignites to produce a high-intensity, momentary flash of light. However, this is the case when the current is supplied to the ignition filament through the lead wire 3. For the purposes of the invention, the lamp support and contact blade 2 may be of any suitable type, but is preferably of the printed circuit type.

The blade 2 comprises a thin sheet metal substrate, for example steel with a coating of an insulating material such as glass on a flat surface, and on each side of the blade 2 a conductive pattern of a printed circuit is fabricated. The conductive pattern on each side of the blade 2 includes regions 6 for terminal contacts of a plurality of lamps, which are arranged on protruding contact tabs 7 of the blade 2, which tabs are located on the longitudinal edge of the blade 2. and from the edge of the blade rises a group of lamps extending parallel to each other and at right angles to the edge of the tab portion 7 in the form of a longitudinal strip across the terminal contact area 6. be. These are then selectively interconnected by suitably shaped conductive lines 8 to a plurality of lamp contact areas 4 which are approximately aligned near the opposite edges of the blades 2; There are two contact areas 4 for each lamp 1. It is noted that in a row of five lamps 1 there are six areas 6 for terminal contact, one for each lamp and one for the common of all lamps. In the illustrated array, the blades 2 for supporting and contacting the lamps are arranged upright in a longitudinal arrangement block 9, which is made of a suitable plastic, for example polystyrene. As shown, the placement block 9 is trough-shaped and receives the contacting blade 2 in the center and rests on the bottom wall 10, and the tab portion 7 of the contacting blade is trough-shaped. It projects downwardly through a slot 11 in the center of the bottom wall 10 of the block. This is to protrude from the lower side and expose the land terminal region 6. The contact blade 2 is held upright in the placement block 9. In this case, the blade is fitted at both ends into a slot in a retaining post 12 rising from the bottom wall 10 of the block. The top edges of these holding posts 12 are softened by heat, and on the upper edge of the blade 2,
It is rounded as shown by 13. Placement block 9
This is to securely fix the blade inside. In addition to the lamp 1 and the block 9 arranged on the blade 2,
The array further comprises a multi-reflector unit 14 of the type according to the invention and a rectangular box-shaped light-transparent protective cover 15 of a suitable transparent plastic such as polystyrene.

The reflector unit 14 is inserted between the two rows of lamps and rests on the rim 16 above the block 9. A cover 15 is arranged to cover the assembled lamp 1 as well as the reflector unit 14 and wraps around the upper rim 16 on the four sides of the block 9.
The cover 15 is fixed to the block 9 by ultrasonic welding or the like. The idea is to give the array a unitary structure so that it can be plugged into a camera etc. as one unit and then removed when all the lamps have been flashed. According to the invention, the reflector unit 14 comprises a pair of identical complementary strip-like reflector panels 17, the reflector panels being made of thin walled rigid material of inexpensive plastic material such as polystyrene. . . . molded parts, each formed with a row of aligned lamp-receiving cavities defining reflectors 18 of the lamps, into which the individual lamps of a group of lamps are inserted, as shown in FIG. accept.

Reflector panel 17 is preferably made by injection molding techniques, as is well known in the plastic molding art. The side of the panel in which the lamp-receiving reflector cavity is formed is then provided with a suitable reflective surface. For example, a coating of a reflective material such as aluminum is applied by vacuum deposition or the like. The shape of the individual reflector cavities that make up the reflector 18 of the lamp is not an essential part of the invention, but any suitable shape may be employed. In the illustrated example, the reflector 18 has a complex parabolic trough shape, and end portions 19 and 2 are located above and below the parabolic shape.
0, a tube-shaped lamp 1 is housed longitudinally, the end portions of which extend around the upper and lower ends of the lamp which are arranged in the reflector. individual reflectors 18
has at its upper end a recess 21 for receiving the exhaust tip 22 of the lamp 1 and at its lower end a tunnel-shaped through passage 23 to accommodate the base end 24 of the flat press seal of the lamp 1. It houses and passes through the lamp lead 3 which connects to the region 4 of the blade 2. For economic reasons, the reflector panel 17 is made with relatively thin walls so that the assembled reflector unit 14 is relatively light. Furthermore, to minimize the overall length of the reflector panels 17, the trough-shaped reflectors 18 formed in each reflector panel 17 are placed close together, their outer edges indicated at 25 in FIG. We are meeting each other so that we can meet each other. The two reflector panels 17 constituting the reflector unit 14 are arranged back to back, with the two rows of reflectors 18 facing outward, and are arranged in a zigzag pattern as shown in FIGS. 2 to 4. ing.

For convenience in handling and assembling the other parts of the array, an arrangement of a plurality of interlocking and matching shoulder means is provided to group the two reflector panels 17 back-to-back into a unit. It is located behind the reflector panel. The shoulder means comprises a pin 26 and a socket 27 mating means, for example as shown in FIGS. 3 and 8, and the two reflector panels 17 are assembled together so that each row of reflectors 18 is placed back to back. When arranged in this relationship, the shoulder means are arranged to be juxtaposed and compatible with each other. As shown, four mating means consisting of locating pins 26 and sockets 27 are provided on the reflector unit 14, each reflector panel 17 being subsequently provided with a pair of locating pins 26 on its sides; They are located near the upper and lower edges of the panel, respectively (Figure 2). The sockets 27 are in the form of bosses with recesses 28 for receiving pins, respectively near the earthen edges of the panel as well as the lower cuttings. As shown, the two pins 2 of each reflector panel 17
6 extends from the rear side and is lined up in the deepest part of one of the spaces of the channel formed on the rear side of the other reflector panel 17 about the two pins 26. The deepest part of such a recess is located at the matching line 25 of the adjacent side edges of the first two reflectors 18.
It corresponds to In this way, each reflector panel 17
The two pins 26 are connected to a substantially triangular flat rear region 2
9 and 30 are arranged opposite to each other. Those areas 29,
30 &ζ appear on the other reflector panel 17 on the opposite side and are respectively arranged between the first two reflectors 18 in a row on the other reflector panel 17 at their top and bottom. Thus, the sockets 27 for receiving the pins of the reflector panel 17 can be located in the flat triangular areas 29, 30 of the reflector panel, as shown. The socket 27 is thus located in the space formed behind the reflector panel 17 between the two reflectors 18.
Effectively arranged. Between the two reflectors 18 a socket 27 is arranged, which allows a sufficient mutual fit between the pin 26 and the socket 27, so that the units assembled back-to-back can be As, 2
ensuring that the two reflector panels 17 are held firmly in place. Of course, other fastening means may be employed to hold the two reflector panels 17 together as a unit. They can be held together by adhesive, solvent bonding, ultrasonic welding, etc. along abutting surfaces or edges. Of course, it is well known that the flashing of any photographic flash lamp, such as flash lamp 1, is accomplished by the generation of a significant amount of thermal energy. If the other reflector 18, by its associated reflector 18,
If heat is conducted, this thermal energy must cause a distortion or twist in the reflector Q on the other side. Therefore,
Even if the lamp 1 were unflashed, the performance of the light reflection of the flash of the lamp 1 would be considerably inhibited.
The reflector 18 of the arrangement according to the invention is therefore such that the reflector panels 1T are provided on their rear sides with suitable spacing shoulder means that touch and interlock with each other, so that no thermal distortion occurs. The knobs ensure that the reflectors 18 of one reflector panel 17 are separated from the reflectors 18 of the other reflector panel 17.

Thereby, the reflectors are set apart by a small predetermined distance. At its closest, the rear sides are about 1/64th of an inch or so, as shown at 31 in FIG. Thus,
They are maintained in a predetermined spaced relationship without contacting each other at all times. In the illustrated example, the spacing shoulder means consists in part of a top reinforcing rib 32 formed on the rear side of the top of the reflector panel 17 and extending continuously therealong. The panels extend and are provided for contacting each other when the two panels are assembled back-to-back as shown in FIGS. 3 and 8. The other part is composed of a plurality of bottom reinforcing ribs 33, which are formed on the back side of the bottom of the reflector panel 17 between adjacent reflectors 18, and are provided there. 4, 5, and 8, and is used to contact the back side of the tunnel portion 23 of the reflector 18 of the opposing reflector panel 17. . Rather than being formed as a straight edge, the longitudinally extending trailing edge 34 of the top spacing rib 32 of each reflector panel 17 has a plurality of (in the illustrated example two) edges.
2 and 3), which contact the straight portion of the rear edge 34 of the spacing rib 32 of the opposing reflector panel 17 and provide the spacing function. give. In this way, the top spacing ribs 32 of the reflector panels 17 can be made to a minimum depth over most of their respective lengths, thus saving the amount of plastic material and cost of manufacturing. Rather, the opposing trailing edges 34 of the two top spacing ribs 32 of the reflector panels 17 assembled back-to-back accommodate any internal projection spacing and are spaced from each other over most of their length. to ensure that Internal protrusions can also be made on the inside of the top wall of the plastic cover 15.
A plastic cover 15 is applied to the reflector unit 14. The bottom reinforcing ribs 33 of the reflector panel 17 extend between adjacent reflectors 18 in the reflector panel 17 to join them together, thus longitudinally extending the reflector panel along the bottom. serves to strengthen the.

A group of 33 ribs for reinforcing the bottom is connected to a group of ribs 32 for separating the top.
The reinforcing effect is such that when each reflector panel 17 is removed from the former and cooled from its hot-formed state, it retains its originally molded shape and remains substantially straight in its longitudinal direction; No undulations or waveform phenomena occur. These corrugations are caused by internal stresses that develop within the plastic material of reflector panel 17 during cooling. In addition to the above-mentioned function as a top spacing means for the reflector panel 17 and as a reinforcing means therefor, the bottom rib 33
Groups also serve a more important function.

That is, this prevents each reflector panel 17 from being twisted or distorted due to the heat generated by the flash of the lamp of the reflector 18 adjacent to the reflector panel 17, which would impair the light reflecting ability of the reflector 18. This is a function to Reflector panels 17 that do not have bottom reinforcing ribs 33 that extend between the reflectors of the panel and connect adjacent ones are susceptible to severe reflector twisting or buckling due to such heat. That is, the combustible material inside the flash lamp 1
falling onto the bottom of the lamp envelope 5 and heating up not only the associated reflector 18 but also the bottom of the next adjacent reflector 18 as well as in each reflector panel 17, causing the aforementioned reflector 18 This is because it generates thermal distortion. Instead of utilizing the top and bottom reinforcing flanges or ribs 32 and 33 as spacing means to space the two reflector panels 17 from each other within the assembled reflector unit 14, the mounting pins 26 and socket means 27 allow the panels to be separated. A spacing effect can also be achieved.

To this end, the outer ends of the locating pins 26 abut the bottoms of pin-receiving recesses 28 in each socket means 27, so as to space the reflector panels 17 apart by the required predetermined distance. , the arrangement pin 26 and the socket means 27 can be configured.
The locating pin 26 is also provided with a shoulder arrangement thereon, such as by a large diameter leg, abutting the outer end of the socket means 27, thereby forming a spacing arrangement for the reflector panel. Where any of the spacing devices described above are used, in such case the top and bottom reinforcing flanges or ribs 32 and T33 may be made of smaller width to abut each other or to the back side of the tunnel portion of the reflector panel 17. I try not to collide with anything. From the above description of the invention, it can be seen that a two-row straight line incorporating a multi-reflector unit is relatively lightweight, relatively inexpensive, structurally sound, has excellent optical properties, and is convenient to assemble with other array elements. It will be clear that a type photographic flashbulb array can be achieved.

Furthermore, because the reflective surface of each reflector of the array is never deformed by the heat associated with flashing the lamps, the light reflecting ability of the array is undiminished across the flashes of all lamps in the array. Although the present invention has been illustrated and described with reference to particularly preferred embodiments, it will be apparent to those skilled in the art that the above and other changes can be made to the form and detailed structure without departing from the spirit and scope of the invention. it is obvious.

The present invention may take the following embodiments in relation to the above-mentioned claims (hereinafter referred to as claims). (1
) the abutment-spacing shoulder device comprises reinforcing rib steps on the reflector panel adjacent the top and bottom long edges, and/or the internal matching pin and socket device on the reflector panel are assembled back-to-back; A multi-reflector unit as claimed in claim 1, which slides together in an orderly manner to hold two reflector panels together as a unit in position.

(2) the reinforcing ribs near the top edge of the panels abut each other, and the reinforcing ribs near the bottom edge of each of the panels abut the back side of each reflector on the other side of the panel, together with the spacing device; The multi-reflector unit according to embodiment 1, wherein two opposing reflector panels are cooperatively arranged in a predetermined back-to-back relationship to form nested reflectors separated by a predetermined distance. .

(to) additionally a reinforcing flange on the back side of each said reflector panel extending from the top edge thereof over substantially the entire length of the panel and reinforcing the panel thereon; a plurality of reinforcing flanges on the back side of each reflector panel extending between and joining them together to stiffen the panel, the reinforcing flanges at the top edges of the panels abutting each other; and a reinforcing flange at the bottom edge of each of said panels abuts the back side of each reflector on the other of said panel, together forming a spacing device, forming nested reflectors spaced a predetermined distance apart. A multi-reflector unit as claimed in claim 1, wherein two opposing reflector panels are co-operatively arranged in a predetermined back-to-back relationship to provide a.

(4) each of said reflectors has an open-ended tunnel extending to a bottom edge of said reflector panel to accommodate the bottom end of a photographic flash lamp within said reflector; Embodiment 3, wherein the reinforcing flange at the bottom edge abuts the back side of the tunnel portion of each reflector on the other side of the panel to form the spacing device at the bottom edge of the reflector panel. Multiple reflector unit. (5) said internally compatible shoulder device on said reflector panel is made of a plurality of sets of mating pins, and the socket device slides in order to attach the two reflectors as a unit in their back-to-back assembled position; A multi-reflector unit according to embodiment 5, in which the panels are installed and held together.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an example of a photographic flash lamp assembly installed on a lamp support/contact table used in a true linear photographic flash lamp array apparatus according to the present invention. FIG. 2 is an enlarged perspective view of a two-row linear photographic flash lamp array including the device of the present invention, with a portion cut away to more clearly show the structure thereof. FIG. 3 is an enlarged plan view of an assembled reflector unit containing the device of the invention, partially cut away in cross-section to show the interconnection means of the two reflector panels therein. FIG. 4 is a horizontal cross-sectional view of an assembled reflector unit including the device of the invention. FIG. 5 is a horizontal cross-sectional view similar to FIG. 4, but cut along the tunnel portion of each reflector of the reflector unit. FIG. 6 is a rear view of one of the reflector panels of the reflector unit. FIG. 7 is a fragmentary front view of one of the reflector panels. Figure 8 is the third
8 is a vertical cross-sectional view of the assembled reflector unit taken along line 8--8 of the figure; FIG. 14: Reflector unit, 17: Reflector panel, 18: Reflector, 32, 33: Rib.

Claims (1)

[Claims] 1 A horizontally elongated reflector unit for a photographic flash lamp array, the reflector unit comprising a pair of strip-shaped thin plastic reflector panels 17, 17, each of which is arranged in a row on its front side. The pair of reflector panels 17, 17 have a group of vertically-aligned vertically elongated depressions, each of which is formed with a reflective surface, forming a group of reflectors 18 for each individual lamp. The reflectors 1 are arranged back to back and spaced apart from each other, and the reflectors 1 described above are
It is a reflector unit in which all eight groups face outward, and is provided with a reinforcing rib 32 extending over almost the entire length at the top of the back side of each of the reflector panels 17, 17. A plurality of groups of reinforcing ribs 33 are provided at the bottoms of the back sides of the reflector panels 17, 17, and the reinforcing ribs 33 at the top are integrally connected between the adjacent reflectors 18.
2 are in contact with each other, and the group of reinforcing ribs 33 on the bottom of one of the pair of reflector panels 17, 17 is on the back side of the other group of individual reflectors 18 of the pair of reflector panels. A reflector unit characterized by being in contact with each other.