Abstract: A device for a battery with a spacer preventing direct physical contact between first and second batteries arranged in physical series. A resilient conductor providing an electroconductive contact between a center electrode of the first battery and a terminal electrode of the second battery is held by the spacer.

Abstract: Switch-less flashlights have a tube for housing the battery and a lamp assembly threaded or mounted on an end portion of that tube and having spaced first and second lamp terminals adapted to contact corresponding battery terminals upon rotation or movement of that lamp assembly relative to the tube in a first sense of rotation or direction. One of such first and second lamp terminals is also adapted to disengage from a corresponding one of the first and second battery terminals upon rotation or movement of the lamp assembly relative to the tube in a second sense of rotation or direction. The flashlight preferably includes a spring, such as in the form of the first lamp terminal contacting the first battery terminal, for permanently pressing the battery against an opposite end portion of the battery housing tube.

Abstract: A multi-function lighting device includes a barrel for housing a battery therein, a lamp base mounted in an externally threaded end of the barrel, a lamp provided on the lamp base, a switch unit disposed in the barrel for connecting selectively and electrically the battery to the lamp, and a head assembly. The head assembly includes a tubular coupling member which is threaded internally to engage threadably the barrel and which is provided with an inward push projection, a tubular sleeve member which is made of a light transmittable material and which is sleeved slidably on the coupling member, and a head cap which is secured to one end of the sleeve member and which is provided with a reflector therein. The sleeve member is shiftable with respect to the coupling member between a first position, wherein the lamp extends into the reflector so that light may be directed axially, and a second position, wherein the lamp is located in the sleeve member so that light can pass transversely through the sleeve member.

Abstract: A golf swing training device configured to be removably attached to the handle of a standard golf club. The training device includes a light source that generates a parallel light beam, such as a laser beam, which enables a golfer using this device to visually monitor the position of the club with accuracy throughout the golf swing. The light source is enclosed within a pair of housings that are threadably coupled, such that the light source is activated by rotating one of the housings relative to the other. The method of activation employs an elasteromic member that permits current flow from a battery to the light source upon the elastomeric member being sufficiently compressed in order to achieve electrical contact between one of the battery's contacts and the housing in which the elastomeric member is contained.

Abstract: An extension bar with built-in light to be used in conjunction with a portable driving tool which has a coupling member. The extension bar comprises an elongated body having a socket for accommodating and receiving the coupling member of the driving tool at one end, and a coupling member at an opposite end. The socket is connected to an internal chamber of the elongated body, and the coupling member has a through bore which is also connected to the internal chamber. A built-in light assembly is installed inside the internal chamber of the elongated body and including a light bulb and a battery, the light bulb located adjacent to the through bore. The built-in light assembly has an electrical conducting and switching mechanism for establishing electrical connection between the battery and the light bulb and automatically switching on the light bulb when the extension bar is attached to the driving tool, and switching off the light bulb when the extension bar is detached from the driving tool.

Abstract: A focusable flashlight comprising a cylindrical tube for containing a battery, a head combined with the front end of the tube by means of a spring stop, a lamp holder and a spring pusher, the head functioning as a switch by being movably screwed to change the distance between the lamp holder and the front end surface of the tube in turning on or off electric power from the battery and at the same time light focusable by means of a transparent lens and a light reflector fixed at the front of the head.

Abstract: A portable light includes a shell which defines an opening. The shell is linked to a lens so as to cover the opening therein. A printed circuit board (PCB) is contained in the shell. The PCB is operatively connected with a light emitting diode (LED) for flashing and a vibration-sensitive switch for controlling the LED. The PCB is operatively connected with a metal strip. A dry battery is disposed between the PCB and the metal strip. The shell can be linked to a buckle for attaching the portable light to a shoe.

Abstract: A miniature, adjustable beam flashlight having a switch control nut that is rotatable in first and opposite directions around the body of the flashlight for controlling a switch assembly in order to energize a lightbulb and adjust the light beam produced thereby. The switch assembly is interconnected with the switch control nut so as to move in first and opposite longitudinally extending directions through the body of the flashlight to complete or open an electrical conduction path between a battery supply and the lightbulb when the nut is rotated in the first or opposite directions around the body. The lightbulb is coupled to the switch assembly and adapted to move therewith in the first and opposite longitudinally extending directions so that the lightbulb is axially advanced relative to the body when the electrical circuit path is opened or retracted when the circuit path is completed.

Abstract: A lamp for a life jacket or raft is provided with a battery box (1,2) having a battery (7) and a light source (9) arranged in a lamp housing (6). The lamp may be switched on and off by screwing the lamp housing on and off. At its perphery the rotatable lamp housing (6) is provided with one or more line attachment means in the form of teeth (13) on a toothed ring (12), and a line (14) is releasably attached to one of the teeth so that a pull in the line will cause the lamp housing (6) to rotate and thus to switch on the lamp, following which the line is automatically released from the lamp housing.

Abstract: A renovated flashlight includes a head means and a cylindrical battery compartment. The head means is composed of a lid, a reflecting means, a spring means, and a conducting means. The reflecting means has a hollow body at bottom portion adopted to receive the spring means, and the conducting means therein. A longitudinal slot is formed at one side of the hollow body for a negative conducting plate to extend therefrom.

Abstract: A lighted bicycle safety device with an actuatable safety light contained within a lighting apparatus. A light, power sours, and light switch are all compactly contained within the apparatus, which is pivotally connected to a bicycle to move between an operational orientation where the lighting apparatus is oriented substantially horizontally and laterally and the illuminating lens extends beyond the outermost side of the bicycle, and a storage orientation where the lighting apparatus is oriented flush with the plane of the bicycle frame. A straightening spring absorbs impacts of passing motor vehicles. An on-off switch projects from and slides along a channel formed in the apparatus. The switch moves a sleeve and a light bulb retainer to shift the light bulb between on and off positions.

Abstract: Two, redundant, electrical switches in electrical series between a flashlight's battery and its bulb are simultaneously activated by an angular rotation between two sections of the flashlight's case. To implement one of the switches the functions of (i) force biasing and (ii) electrical conduction between a battery's terminal and the flashlight case are separated. Force biasing between battery and case transpires by a spring and washer which are, in combination, electrically non-conducting. Electrical conduction between battery and case transpires by another, separate, spring that is shorter than the force-biasing spring. Further, and independently, a removable and replaceable combination shock-mounted light bulb and reflector assembly includes (i) a wire-lead miniature light bulb of low inertial mass encapsulated within (ii) a shock-absorbing plastic matrix which is further sleeved in (iii) a strong metal which also presents a reflector surface precision aligned to the bulb.

Abstract: A miniature flashlight comprising a barrel, tailcap, head, bulb holder, bulb and an electrical circuit. The bulb holder is positioned at one end of the barrel such that the bulb extends into the head. The head includes a parabolic reflector surrounding the bulb such that the rotation of the head relative to the barrel changes the focus of the flashlight beam. A rotary switch associates the bulb holder with the barrel to control opening and closing of the electrical circuit. Rotation of the head away from the barrel closes the electrical circuit. The head is not a part of the electrical circuit and its removal exposes the bulb for substantially spherical illumination. The head assembly is removable from the barrel for use as a base into which the tailcap and barrel is inserted to stand the miniature flashlight in its "on" condition, as a lamp.

Abstract: A variable focusing flashlight includes a barrel which has a battery source of power contained therein and a tail cap mounted on one end of the barrel and having a compression spring provided thereon for urging the battery source towards the other end of the barrel. A lamp base retains a lamp bulb adjacent the other end of the barrel and includes a stationary receptacle mounted in the other end of the barrel and having an axially extending through bore formed therein. A pair of conductors are mounted in the stationary receptacle such that one of the conductors serves to couple the battery source and a first lamp electrode and the other one of the conductors serves to couple a second lamp electrode and the barrel. A movable receptacle has a plate portion disposed between the stationary receptacle and the battery source and formed with an opening and an upward extension that extends slidably into the through bore of the stationary receptacle.

Abstract: An elemental flashlight utilizes a very simple, one-piece molded plastic frame which has open, clip-end mounts for a bulb and battery, with a conductor connecting between the bottom of the battery mount to the band contact of the light bulb so that when the battery is snapped into its mounted position the flashlight is on, and when the battery is inserted upside-down the nipple contact misses the conductor, so that the bulb is not lit.

Abstract: A flashlight having a switch and beam adjustment mechanism located in the tailcap whereby the flashlight may be turned on and focused with one hand without changing the grip on the flashlight by that hand. Batteries of "AAAA" size are contemplated for use in one embodiment of the flashlight.

Abstract: A lighted nock is provided for an arrow which undergoes an initial acceleration when shot from a bow and thereupon reaches a zero acceleration during flight shortly in front of the bow. The nock is formed of transparent material within which is embedded a light emitting diode. An elongate cavity is positioned within the forward portion of the nock and within that cavity there is slidably located an elongate battery having a rod-shaped forward electrode and a rear face forming a second electrode. An energy storing spring is positioned within the cavity and a second cavity is positioned adjacent the first cavity. Within the second cavity there is located an electrical contact and between the two cavities is a position delimiter formed as an annular silicone ring.

Abstract: A twist switch is shown for a flashlight of the type having a conductive tubular body having an interior, opposing ends and an internal shelf formed at one of the opposing ends. The internal shelf has a bulb receiving opening and a reflector is mounted on the internal shelf. A bulb is inserted into the tubular body having a shoulder contact which rests on the internal shelf and a base contact which passes through a bulb receiving opening in the internal shelf. A dry cell battery is stationarily positioned within the interior of the tubular body and has a center terminal in electrical contact with the bulb base contact. An end cap is rotatably engaged on the end of the tubular body opposite the reflector. A conductor element located within the interior of the end cap is initially separated from the tubular body by an insulating member.

Abstract: A submersible light includes a generally cylindrical housing body having a closed end and an open end. A light emitting diode and a plurality of batteries are provided in the body, and an end cap for the open end actuates the light by flexing a lead of the light emitting diode into engagement with the batteries. A clamp ring is provided on the outside of the cylindrical housing body under which a line can slip for snap-on attachment of the light to a fishing line and the like.

Abstract: A flashlight includes a cylindrical casing containing a battery. A bulb is slidably disposed in a socket member carried in the casing, and a head assembly is rotatably mounted on one end of the casing. The bulb has an annular flange forming an electrical terminal. The head assembly has a preloaded pressure pad arranged for engaging the bulb flange. When the head assembly is rotated in one direction, the bulb is moved toward the battery and the bulb flange is moved into contact with another electrical terminal in the casing. This closes an electrical circuit connecting the battery and the bulb, illuminating the bulb. A spring carried by the socket member is disposed between the battery and the bulb. When the head assembly is rotated in the opposite direction, the spring urges the bulb away from the battery and moves the bulb flange out of contact with the electrical terminal in the casing. This opens the electrical circuit between the battery and the bulb, extinguishing the bulb.

Abstract: A flashlight includes a flashlight head assembly, a barrel, and a lamp base. The lamp base is fixed inside the head assembly and is rotatably engaged to the barrel. When the head assembly is rotated relative to the barrel, a flashlight bulb fixed to said lamp base moves axially away from or towards a lens attached to the head assembly, thus varying the focusing distance of the bulb. The barrel serves as a contact between the negative terminal of a battery and a terminal end of the flashlight bulb. A second terminal end of the flashlight bulb is connected to an elastic spring whose base is fixed on a metal post. The rotation of the head assembly relative to the barrel can accordingly compress or expand the elastic spring. The elastic spring can thus urge the metal post to contact the positive terminal of the battery.

Abstract: A miniature flashlight comprises a barrel, a tail cap, a head assembly, and means for holding a miniature lamp bulb. The means for holding lamp bulb comprises an insulated receptacle disposed external to the end of the barrel to which the head assembly is engaged, a second insulated receptacle disposed within the barrel and matingly engaging with the first insulated receptacle so as to enable the first and second insulated receptacles to translate axially through a distance limited by a flange formed on the first insulated receptacle and an annular lip formed inwardly at the end of the barrel, and a pair of conductor members mounted in the second insulated receptacle such that one of the conductors serves to couple the center electrode of a dry cell battery to a first pin of the lamp bulb and the other conductor member serves to electrically couple the second pin of the lamp bulb to the lip formed on the barrel.

Abstract: A torch comprises a battery housing and a torch head, which torch head is relatively movable to the battery housing, and wherein the torch head is provided with means supported on its inner surface which on relative movement of the torch head to the battery housing causes movement of a battery or batteries in the battery housing away from a light bulb fixedly supported at the end of the battery housing.

Abstract: A miniature flashlight including a cylindrical tube enclosed at a rear end by a tail cap, a control ferrule rotatably connected to a front end of the cylindrical tube, and a face cap with a lens and a reflector threadedly engaged at a front end of the control ferrule. One or more batteries are disposed within said tube, and a spring member is located between the tail cap and the adjacent battery. A guide means is disposed within the fron end of the tube. A slidable socket is threadably connected within the control ferrule in order to be pushed along a longitudinal axis of the tube. Two resilient blades are disposed in the slidable socket with one end of the first resilient blade slidably contacting the guide and one end of the second resilient blade contactable with an anode of a foremost battery. A light bulb is plugged into said slidable socket. The sliding movement of the slidable socket brings the end of the second blade into contact with the anode of the foremost battery.

Abstract: This invention discloses an improved flashlight assembly which comprises a lighting device, an upper housing, a lower housing, a packing member and a cap. The lighting device is disposed on the top of the upper housing for offering a beam of light when electric connection is achieved. A through hole and a pair of threads are formed respectively on the upper housing and the lower housing so that they may be engage with each other. Likewise, the packing member is also provided with a though hole and a pair of openings for attachment on the hollow joint member. A non-conductive sheet can be inserted into the flashlight body to break the electrical connection of the batteries when all through holes have been aligned in an overlayed manner due to the assembly of both the upper housing and the lower housing by the engagement of two pairs of threads.

Abstract: A miniature flashlight as disclosed to comprise a barrel, a tail cap, a head assembly, and means for holding a miniature lamp bulb and for providing interruptible electrical coupling to dry cell batteries retained within the barrel.

Abstract: A single cell flashlight which comprises a barrel, a tailcap, a head assembly, and a semi-permanently mounted reflector, lens and o-ring within the head assembly; which may be switched on and off by rotation of the head assembly with respect to the barrel; which may be focused upon further rotation of the head assembly with respect to the barrel; which may be used as a source of unfocused, substantially spherical illumination by removal of the head assembly from the barrel; which may be provided with a lanyard or a key ring holder positioned near the head end of the flashlight to provide for simultaneous illumination of a lock as well as its key with one-hand operation of the flashlight; and which is provided with a special tailcap insert for that a single-cell flashlight employing batteries of a "AAA", "AAAA" or special size batteries.

Abstract: A flashlight having a switch and beam adjustment mechanism located in the tailcap whereby the flashlight may be turned on and focused with one hand without changing the grip on the flashlight by that hand. Batteries of "AAAA" size are contemplated for use in one embodiment of the flashlight.

Abstract: A torch is disclosed which comprises a casing for receiving a cell and a head which screws onto the casing. The head contains a light bulb, a mounting for the bulb and a reflector. The cell is gripped while it is in the casing to prevent it moving freely along the casing. It can, however, move when the torch is tapped on one or other end or is knocked on a surface with sufficient force to overcome the restraint which is applied to the cell. The cell can also be caused to move by `flicking` the torch. The cell can be gripped by a leaf spring which extends along the casing between the cell and the inner face of the casing, the leaf spring being slightly deformed as the cell is pushed into the casing and thus exerting a lateral thrust on the cell. Alternatively, there can be a wedge which when pushed into the casing urges the cell laterally. In another form the casing itself can be closed onto the cell when the head of the torch is screwed onto the casing.

Abstract: An improved electric torch or flashlight of the type having an elongated case, a bulb and a battery source of electrical energy is disclosed. The flashlight includes a pressure-receiving surface, which may be in the form of a series of flexible segments formed of case material at an end of the case, a pressure-transmitting surface, which may be in the form of a nib at the end of a right-angle bend formed in the flexible segment, and a complementary surface, which may be a portion of the bulb. Radial pressure on the segments results in a longitudinal displacement of the complementary surface, which controls closing of the electrical circuit and illumination of the bulb.

Abstract: A flashlight employing a battery casing, switching means and a lens and reflector unit, said battery casing adapted to accommodate one or more cells and having a single conductive coil spring member for providing an electrical path from a terminal of a cell disposed near the bottom of the casing to the open end area of the casing where the spring can electrically contact a terminal on the switch means or a terminal on the lamp of the flashlight.

Abstract: A tubular conversion cartridge is provided for the outer tubular member of a self-feeding consumable candle holder and may be utilized to replace the consumable candle follower and guide sleeve within the outer tubular member of the holder in order to convert the holder into an electrically actuated simulated candle.

Abstract: A miniature flashlight comprising a barrel, tail cap, head assembly, and bulb holder providing interruptible contact to batteries within the barrel. The bulb holder comprises an insulated receptacle external to the barrel end engaging the head assembly, a second insulated receptacle within the barrel engaging the first receptacle enabling both receptacles to translate axially, limited by a flange on the first receptacle and an annular lip formed inwardly at the barrel end, a pair of conductors mounted in the second receptacle couple one conductor with the center electrode of a battery with the first bulb pin and the other conductor with the second bulb pin to the barrel lip. A spring fits between the tail cap and the batteries. The circuit is closed by the barrel, tail cap, and spring coupling the second lamp pin to the battery case terminal.

Abstract: The illuminator is especially configured for attachment to examination telescopes. The illuminator has a body which carries a plurality of batteries, a connector at the forward end of the body for detachable attachment onto the illumination nipple on the side of the examination telescope, and a lamp holder which is actuated by the attachment action to complete a circuit through the lamp to provide illumination. The illuminator structure is light and compact so that it can be directly carried on the examination telescope.

Abstract: A self contained light source consisting of a metal cylinder, preferably aluminum, encasing a battery threaded into one end of the aluminum cylinder there being a non conducting insulator which is manufactured to fit into bore of a commercial transparent archers nock. Located in hollow bore of said commercial nock there being a L.E.D. which is energized by screwing nock assembly into aluminum cylinder there by completing electrical circuit. The L.E.D. is selected to impose the proper current demand on the battery, which by its size becomes self limiting and is unable to burn out the L.E.D., there by eliminating all other electrical voltage controlling devices. The above described components form a unit assembly which may be glued into any commercial tubular arrow with minor modifications to the arrow.

Abstract: A diver's flashlight having a unitary case with a closed end and with a battery pack in said case seated against a spring. A connector strip is positioned in the case and provides spaced-apart contactor portions at opposite ends of the case. A removable barrel is in watertight threaded engagement with the case and is positioned over a reflector block with a halogen lamp mounted in a reflector in the reflector block. Threading the barrel onto the case overcomes the spring pressure and completes the circuit between the bulb and the battery pack through the connector strip to switch the flashlight on and off. A battery charging unit incorporates a removable charging head which replaces the reflector block and barrel for in-place charging of the battery pack of the flashlight. In a second embodiment the lamp is adjustably mounted in the reflector block permitting selective positioning of the lamp with respect to the reflector to focus the flashlight beam in conjunction with the switch operation.

Abstract: A compact form of torch which can resemble a lipstick in size and shape so that it can be carried in a handbag comprises a base rotatably supporting a sleeve to move torch between a retracted non-working position and a projecting position. A battery holder is axially movable by engagement of pins projecting from the holder into spiral grooves in the sleeve. A bulb holder is resiliently urged away from the battery holder and constrained to move axially corresponding to the movement of the battery holder except that the bulb holder reaches a stop position just before the battery holder reaches the projecting position so that slight further axial movement of the battery holder causes contact between the lamp carried by the lamp carrier and a battery carried by the battery holder to energize the lamp in the projecting position of the torch.

Abstract: The present invention relates to torches. The torch described herein has two components which together define a case containing battery means and a bulb, with a seal located between the two components. The torch is operated by causing relative movement between the two components.

Abstract: A mine lamp having an improved base structure and envelope that cooperate with the socket and lens of an underground miners head piece to maintain the lamp in a centered position relative to a reflector as the latter is manually adjusted relative to the lamp, and by so doing substantially increasing the light output from the head piece.

Abstract: The battery assembly is housed in the casing of the flashlight so as to be axially slidable therein, whereby the displacement of said assembly in one direction closes the electrical circuit comprising the bulb, and the displacement in the opposite direction opens said circuit. A pushbutton radially extends from the flashlight casing. The said pushbutton is provided with a cam-shaped portion cooperating with an axially slidable cam follower to transmit the axial displacement to the battery assembly.

Abstract: Miniature flashlight consisting of a case (1) of moulded plastics material closed by a cover (2) that is at least partly metallic and containing a cell (18), an electric bulb (11-12) and a pressure spring (16), characterized in that the whole unit is flat in shape, comprising two facing walls formed respectively by the bottom wall (7) of the case and by at least a portion of the cover (2); in that the cell (18) consists of a flat cylindrical cell the casing of which is in contact with the center contact stud (19) of the bulb (12) and the opposite polarity contact (20) of which is oriented towards the cover (2); in that the bottom wall (7) of the case (1) comprises parts (9, 10) enabling the socket (11) of the bulb (12) to be housed and restrained; and in that at least one of the two facing walls (7 and 2) is flexible enough for compression of the unit between the fingers (25) to bring the socket (11) or the cell (18) contact (20) into contact with the conducting portion of the cover (2).

Abstract: A light adapted to be worn on a human finger has a substantially hollow housing having the general configuration of a finger with an opening therein into which a human finger may be positioned. A pressure-activated light source in the form of a bulb, a battery and a spring for maintaining the bulb and battery spaced from one another is positioned in a closed end of the housing and adapted to be activated when a finger inserted into the housing forces the battery against the contact of the bulb.

Abstract: A charm carries a battery operated light, which may be turned on and off.

Abstract: The invention relates to a flashlight that is adapted to be hand held and wherein the circuit to the bulb is completed by merely a squeezing action on the outer tubular shell of the container, which pressure causes a series of lengthwise metal fingers on a clip mounting the bulb, to be brought into contact with the metal can housing the battery and thus energize the bulb.

Abstract: This invention relates to a battery powered lamp device which includes an upright base of metal, a bulb and switch-retaining member of metal and an upright chimney. The member has lower and upper ends and is mounted on the upper end of the base. The chimney is mounted on the upper end of the member. The base is provided with an upright elongated battery-receiving cavity closed at its bottom and open at its top. The aforesaid member is provided with a bore which is in registry with and constitutes an extension of the cavity. A bulb provided with a base having a central contact is mounted on said member and within the bore in such a manner that the illuminating portion of the bulb extends within the chimney. The base of the bulb is fitted into the upper portion of the bore for positioning the contact centrally thereof. A compression spring is disposed within the cavity in electrical contact with the bottom thereof. A battery within the cavity extends into the bore and at one end conductively engages the spring.

Abstract: A lighted tool holder for releasably holding a variety of tools, such as screw drivers, including an elongated hand-held hollow body having a centrally mounted light bulb therein with plural batteries axially shiftable into electrical contact with the bulb. The batteries and light bulb are held in position by a single spring wire spiraled around the base of the light bulb and surrounding the batteries and engaging one of the battery grounds to provide the ground wire circuit for battery actuation.The releasable tool is rigidly held in position by a cylindrical adapter mounted in the working end of the tool holder body. This adapter has integral frusto-conical segmented base members, fixed within the hollow body to support the adapter and also permit light to pass through the adapter where it is diffused by reflectors and passed through a cup-like lens on the end of the tool holder body which provides edge lighting.

Abstract: A portable, self-contained lighting device with improvements in bulb positioning, switching, and electrical contact wherein(a) the bulb position changes axially depending on the presence or absence of the power source;(b) the rotating switch is positioned essentially directly above the bulb; and(c) the electrical contact strip is preloaded against the switch assembly in the "off" position and has an over-travel capacity of up to about 50% with a compensating flexible knee capable of changing by up to about 40.degree..

Abstract: A flashlight having an insertable probe contact.

Abstract: A novel battery powered lamp is disclosed which includes a hollow housing, a light bulb disposed in the housing for external illumination, a battery in the housing and switch means. In one embodiment, the switch means is a rotary switch having a manually rotatable arm extending through the housing, preferably at the rear end, for movement into and out of contact with a contact plate. In another embodiment, a flexible resilient electrically insulative biasing block is interposed between the bulb and battery and bears contacts. The block preferably supports the bulb while biasing the contacts in place against the bulb and battery. In a third embodiment, the bulb is socketless and has its base embedded in the block so that it is suspended in a transparent portion of the housing. Each embodiment is simple to assemble and use, inexpensive to make and maintain, efficient and durable. All are utilizable as portable flashlights and the like, and are capable of being made weatherproof.

Abstract: The invention relates to a lantern whose housing (1) includes two superposed compartments (4, 5), the first of which (4) contains a light bulb (7) and the second of which (5) contains a single-cell or multi-cell battery (8), switching means being provided for switching the light bulb (7) on and off.In accordance with the invention, the housing (1) has a one-piece structure without a bottom, at least one portion of the casing of the battery co-operating with the inner surface of the second compartment (5) to guide the battery (8) when it is being inserted in the housing (1) and then to switch said light bulb (7) on and off.Application to lanterns on work sites.