EP1114962A2 - Lamp, in particular home, table or pocket lamp - Google Patents

Abstract

The lamp has a lamp head with a light source located in a hollow reflector, in which plug contacts project from the rear opening of the reflector. The light source is an LED (16). The body is a hollow reflector (16) which has a cylindrically shaped outer casing surface, which has up to the same diameter as the lamp head inner casing. That the lamp head inner casing has a ring shape, with a ring shaped step (22), on which the hollow reflector base lies, in a pushed-in position. The opening of the hollow reflector (17) is a size equal to the casing contour of the LED (16). The inner reflector surface (18,19,20), at the ring shaped edge formed by the opening, ends in the longitudinal axial direction behind or under the LED radiation point. This is beaker shaped and preferably has a conically shaped casing part extending to the open end.

Description

The invention relates to a lamp, in particular a living room, Table or flashlight with a lamp head that is one in has a hollow reflector arranged light source with their plug and / or connection contacts an opening of the Hollow reflector protrudes on the back.

Living room, table or flashlights are of conventional design equipped with light bulbs, which have the disadvantage that with a relatively high power requirement only a relatively small part of the energy used to generate light is used. For Living room or table lamps are higher due to xenon lamps Luminous efficacy or more economical with energy saving lamps Operating modes are possible, but optimizations are still possible here too desirable.

In the case of flashlights, it is known that the light bulb is in the area to arrange the focal point of a concave reflector. Such a reflector is usually a so-called parabolic mirror, with which the light output of the Flashlight should be increased. A filament of a flashlight bulb shines namely when switched on Light off on all sides, so that the reflection does not in Light emitted in the direction of the front opening of the lamp head by single or multiple reflection into one essentially is steered in the axial direction and is therefore usable. To Flashlights are also known from the prior art to achieve different emitted light cones have axially displaceable reflector. This shift can either be via a longitudinal axial guide, by a translatory pushing movement or by a rotating movement take place in which the reflector corresponds to the Thread pitch can be shifted due to the rotation. In Correspondingly, the light bulb can also be used within a rigidly connected to the lamp head longitudinally axially over a slider or the like can be moved, but this is constructive is more complex. The change in the emitted light beam shape depends on the reflection of the light bulb outgoing rays on the inner reflector jacket, one there is essentially parallel light beam emission if the light bulb or its filament at the focal point of the concave mirror located.

A flashlight is known from US Pat. No. 4,783,735 Reflector and two arranged here at different locations Has light bulbs, light emitting diodes or laser diodes the shadow effects that only occur with a light bulb, should be avoided. The one used to achieve this goal Reflector and the transparent cover through which the light escapes, but the structure is complicated and, since the radiation is perpendicular to the longitudinal axis of the flashlight takes place, the lamp is difficult to handle.

A flashlight is described in EP 0 921 345 A2 next to a two-filament light bulb on the lamp outer jacket two Has light emitting diodes, which are intended to solve the problem that a switched off lamp that has been put down in the dark, is immediately recognizable when the LEDs are switched on. In the meantime flashlights have also become known, the only ones Light source have a bright diode.

It is an object of the present invention to provide a lamp, in particular to create a flashlight that is as large as possible Luminous efficacy delivers and that to protect the battery capacity can be operated with a low power consumption.

This object is achieved by the lamp according to claim 1.

This lamp has a light emitting diode as a light source is surrounded by a hollow reflector, the opening of which is up to a small game or tolerance measure the same size as the contour of the jacket the inserted LED. The location of the hollow reflector is about its outer jacket design and design of the lamp head inner sheath both centered and clearly determined in the axial direction in the lamp head. At least the one in Height of the light emitting chip of the light emitting diode Hollow reflector is essentially conical. The described combination of the light emitting diode with the hollow reflector has the following advantages:

On the one hand, the hollow reflector serves to increase the light output increase. Although it is due to the shape of the LED glass body conditioned the main beam direction of the light emitting diode to a relative small cone angle dimension is limited, but those emitted laterally and without using a reflector from the inner surface of the lamp head absorbed amounts of radiation not inconsiderable. In addition, the breakthrough, namely a through hole in the rear part of the hollow reflector, through which the LED can be inserted, the LED centered when the reflector is slid on, i.e. the LED is in any case with slightly bent wire-shaped Power connections erected so that they are exactly axial is aligned. The hollow reflector itself is over its outer jacket design, that of the lamp head inner jacket design is adjusted, centered accordingly.

The fact that the diode glass body below the light-emitting Is surrounded by the reflector opening the diode is also protected against impact loads. The hollow reflector can in terms of its design on his Diode facing reflector essentially the one after the Shaping known in the art, because already hereby an increased light yield can be achieved. Preferably however, the hollow reflector has a cup shape a conical reflector jacket part at the level of the light-emitting Crisps.

Developments of the invention are the subject of the dependent claims.

The hollow reflector preferably has a cylindrical shape stepped outer surface area, except for a small game or tolerance measure the same diameter as the graded has cylindrical lamp head inner jacket, whereby the Hollow reflector over the annular step of the cylinder jacket parts at an appropriately trained step in the lamp head inner jacket is secured against falling out. With his The hollow reflector is supported on a holder for the floor Diode off.

Alternatively, the hollow reflector can also be a conical one Have an outer jacket that, apart from a slight play or Tolerance measure on the uniform inner cone of the lamp head fits tightly all around. A safeguard against falling out this conical jacket provides a corresponding one Stop at the front edge of the lamp inner jacket.

The conical reflector part at the level of the light-emitting Light-emitting diode forms with the common hollow reflector and Lamp housing longitudinal axis an angle of 10 ° to 45 °, preferably 30 °, the hollow reflector next to the first, the light-emitting chip of the reflector part surrounding the light-emitting diode in the area of larger cone diameters one parallel to this arranged second conical shell part.

In the first part of the jacket, the i.e. radially emitted light forward, i.e. to open the Lamp head reflected. Any further stray light components in radial direction from the top of the LED glass body broadcast sideways are conical from the second Sheath part reflected in a corresponding manner. Between the first and the second conical shell part can a cylindrical jacket part can be arranged. This interrupted Cone shape has the advantage of a reduced diameter, which is especially useful for flashlights in miniature format is desirable. Use the commercially available diodes In the radial direction, stray light portions essentially in height of the light-emitting chips and on the front dome-shaped Vitreous tip on, whereas light emissions in the rest Vitreous areas are negligible. The one described conical cylinder design creates an ideal compromise between the smallest possible reflector diameter and the optimal light output. The hollow reflector can be designed in this way be that it protrudes only slightly from the front end of the diode glass and / or that the LED is at least 0.5 cm behind the open end of the lamp head is arranged. The latter variant is particularly recommended if the diode is against external impact or impact or other mechanical Damage should be protected.

Ideally, the opening in the hollow reflector has a ring-shaped extension to accommodate the back of the floor of the lower diode glass paragraph.

The hollow reflector can also on its bottom periphery Have locking means that surround the back of the diode base. Such locking means ensure that the hollow reflector after Sliding on the diode body is fixed with this, so that possibly on the further longitudinal axial fixations or Stops for the hollow reflector can be dispensed with.

In general, the above-described embodiment can be used both as Flashlight, here in particular as a rod-shaped flashlight, but also be designed as a table or living room lamp. Instead of a battery power supply, the for the Diode operation required voltage if necessary via a transformer can be supplied from a conventional socket (220 V or 110 V) is fed.

In all of these embodiments, the one given by diodes Benefit that compared to conventional light bulbs only use approx. 13% of the energy with the same brightness are.

If a greater light intensity is desired, you can use the present invention in the lamp head also several light emitting diodes be arranged side by side, with each light emitting diode a single one Reflector is assigned, within which the light-emitting diocese is centered, and that the number of honeycomb arranged Reflectors to a one-piece body with a Lamp head inner jacket adapted outer jacket is integrated. The design of the individual hollow reflectors and the location the diodes in these reflectors correspond to those described above Education. That through the honeycomb-like overall body of the The outer jacket profile formed by reflectors can be designed in this way be that it matches the inner surface of the lamp head is. Any "gaps", as in the side by side of circular cross-sections can arise filled in by injection molding be so that the outer jacket profile of the one-piece body for example circular, elliptical or otherwise shaped can.

According to a further embodiment of the invention, the individual Reflectors not fixed, but by an angle up to 45 °, preferably up to 30 °, pivotally arranged. To this The beam direction of individual units (reflector with a diode) can be set in a targeted manner, as is the case with residential lighting equipment basically with conventional spotlights is already known. The individual reflectors (together with one diode each) can be juxtaposed on a line, an arc, a circle, rotationally symmetrical around a central one Point or in any geometric contour to each other be arranged.

In particular, provided the lamp according to the invention as a flashlight should be formed, has the rod-shaped lamp housing design several advantages. On the one hand, such a rod-shaped Lamp can be produced in a miniature format, the Size essentially due to the batteries and used the areas necessary for the arrangement of the switch is determined. One uses instead of a pressure or push switch a rotary switch, which is arranged on the lamp housing cover the lamp radius can be further minimized.

In the case of longer or larger rod shapes there is also the possibility that the rod-shaped lamp in a ring or cylindrical holder of a lampshade inserted can be, so that the lamp when needed as a table or Living room lamp or can be used as a flashlight. A previous one The disadvantage has been seen in that conventional Diodes either only (almost) monochromatic light, e.g. in Blue, Red, Green, Orange) or Red, Blue and Green Radiate mixed colors that only approximate the character of the have "white light". The latter is only possible if correspondingly many diodes with different emission spectra used.

Remedial measures can be provided by LEDs in which the light-emitting LED chip in a plastic mass with fluorescent or phosphorizing particles is embedded. Fluorescence and phosphorescence are physically called Luminescence phenomena summarized; the essential The only difference is the lighting duration. About luminescent effects can be achieved that that emitted by the LED chip Light (e.g. in blue color corresponding to approx. 480 nm) stimulates luminescent particles. The absorbed radiation is then completely or in a more or less short time partially broadcast again, but the emitted Light can only be as short-wave as that absorbed. This leads to a spectral shift of the luminescent particles emitted light (opposite to that from the Primary radiation). The primary radiation and the luminescent radiation lead to one from the Light intensities additively resulting spectral curve, which as Mixed color is visible. The disadvantage of previous attempts to place the luminescent particles near the LED chip, however, is that the slight increase in temperature of the LED leads to changed radiation characteristics, in other words, the emitted color of such an LED is not temperature stable.

In order to remedy this situation, the Present invention proposed the LED glass body to coat the luminescent particles with a layer as fluorescent or phosphorizing material in Has plastic (preferably acrylic) embedded. Different than in conventional experiments, the luminescent particles affixed near the chip results in a coating of the Vitreous body because of the greater distance to the LED chip no significant temperature impairments. The The coating in question can be by sharpening or by means of an immersion process, the latter in which the Diode briefly in a heated liquid solution with the dissolved Immersed luminescent particles doped liquid plastic becomes. Depending on the desired order thickness, the dipping process can can be repeated several times. Are preferred for such Xe light-emitting diodes used, which is a relatively bright, but send out cold white-blue light. To the perceived To make radiation "warmer" can be, for example Xenon diode with an orange coating be, whereby a luminescence effects described Color shift takes place.

According to a further embodiment of the invention, it is possible to provide the lamp head with a cover on the front, which is designed as an optical converging lens. From the geometric Optics are the laws of refraction as well known as depending on the arrangement of a light source bundles of rays that can be generated relative to a converging lens, however it is surprising with what sharpness that comes from a Light emitting diode compared to one with a Filament-equipped light bulb can be generated. The Contour sharpness remains even with slight shifts the light emitting diode from the focal lens focus. The Lense can be made of glass or a transparent plastic consist.

Finally, that is on the outer surface of the lamp housing arranged pressure or push switch against an unintentional Operate covered by a clip that is for exposure the pressure or slide switch releasable, rotatable or displaceable is attached to the lamp housing jacket. Basically are clips for writing instruments, but also for flashlights already known, but so far they have only served as Means for attachment to a belt buckle, a waistband or a jacket pocket etc. The present invention provides on the other hand, the additional option of switching the switch if necessary sure to cover. The solubility, rotatability or Movability of the clip on the outer casing allows at least two different clip positions on the flashlight housing jacket, in the first case the clip only as Cover of the switch is used and in the second case as a holder for attaching the flashlight to a piece of clothing or other aids can be used. The rotatability or displaceability of the clip is chosen such that in one of the clip positions relative to the flashlight shell the switch is fully released.

For example, the clip is preferably in one piece Body with a housing shell at least partially comprehensive and possibly under prestress ring or Part ring profile body connected. Possibly. can the ring or Partial ring profile body in a groove of the outer casing Insert rotatably, with which longitudinal axial displacements of the clip be excluded. Compared to e.g. for fountain pens, Ballpoint pens or similar devices known in principle Embodiments differ, that the above Ring or partial ring profile body rotatable about the longitudinal axis the rod-shaped housing is attached.

According to a further embodiment of the invention Clip from a sheet-shaped flat body, at its free end a spacer is arranged together with the attachment point of the flat body at the opposite end (namely on the ring or partial ring profile body) a minimal Guaranteed distance of the flat body to the outer jacket, whereby this distance is greater than the highest elevation of the pressure switch compared to the outer casing. Possibly. considering any spring elasticity of the clip is ensured by this construction that even under high external pressure load on the housing jacket or the Ring or partial ring profile surface facing pressure or thrust switch is always at a distance from the switch.

A partial ring profile body is preferably used, the is resiliently elastic and thus expandable. On such partial ring profile body can either in the longitudinal axial Pushed towards the flashlight housing to the end and then removed or by tilting the flashlight housing be removed. This variant makes the possibility created, if necessary, the clip rotated by 180 ° Position on the flashlight housing, for example when with a fixed attachment option via the clip one Illumination of the light cone in the opposite direction it is asked for. In addition, the flat and flat an existing ring profile or partial ring profile easy to replace, for example when the one that forms the spring clip flat flat profile at the junction to (Partial) ring profile has broken off.

Fig. 1

eine erfindungsgemäße Taschenlampe mit einem Lampenkopf, dem Hohlreflektor sowie dem Lampengehäuse in einer Explosionsdarstellung,

Fig. 2

eine teilgeschnittene Ansicht einer erfindungsgemäßen Taschenlampe im montierten Zustand,

Fig. 3

eine Schnittansicht eines Lampenkopfes nach Fig. 2,

Fig. 4a bis c

eine Ausführungsform der Erfindung mit 7 von jeweiligen Reflektoren umgebenden Leuchtdioden in drei Ansichten,

Fig. 5a bis c

eine Lampe mit 14 Leuchtdioden in drei Ansichten,

Fig. 6

eine Lampe mit einer rotationssymmetrischen Anordnung von sieben Dioden mit jeweiligen Reflektoren,

Fig. 7a bis k

verschiedene Lampen mit jeweils unterschiedlich vielen Leuchtdioden in unterschiedlichen geometrischen Mustern,

Fig. 8 und 9

zwei Ansichten einer stabförmigen Taschenlampe mit einem verdrehbaren Clip als Abdeckung für den Druckschalter,

Fig. 10

eine Ansicht eines Taschenlampendeckelteiles mit einem verlängerten Kontaktinnenteil,

Fig. lla bis c

drei Ansichten eines Lampenschirmes mit einer Halterung zur Aufnahme einer stabförmigen Lampe,

Fig. 12a bis c

drei Ansichten eines Reflektors mit einer Clipbefestigung für eine Diode und

Fig. 13

eine Querschnittsansicht eines Reflektors und einer Diode, die über eine Clipbefestigung miteinander fixiert sind.

Embodiments of the invention are shown in the drawings. Show it

Fig. 1

an inventive flashlight with a lamp head, the hollow reflector and the lamp housing in an exploded view,

Fig. 2

2 shows a partially sectioned view of a flashlight according to the invention in the assembled state,

Fig. 3

3 shows a sectional view of a lamp head according to FIG. 2,

4a to c

1 shows an embodiment of the invention with 7 light-emitting diodes surrounded by respective reflectors in three views,

5a to c

a lamp with 14 LEDs in three views,

Fig. 6

a lamp with a rotationally symmetrical arrangement of seven diodes with respective reflectors,

7a to k

different lamps, each with a different number of LEDs in different geometric patterns,

8 and 9

two views of a rod-shaped flashlight with a rotatable clip as a cover for the pressure switch,

Fig. 10

a view of a flashlight cover part with an extended contact inner part,

Fig. Lla to c

three views of a lampshade with a holder for receiving a rod-shaped lamp,

12a to c

three views of a reflector with a clip for a diode and

Fig. 13

a cross-sectional view of a reflector and a diode, which are fixed together via a clip attachment.

The flashlight shown has a rod-shaped lamp body 10, which has an internal cavity as a battery drawer has that can be closed at the rear end by a cover 11 is. Possibly. can also have a replacement diode in this cover be releasably clamped in a corresponding profile. At the Lid itself is an annular eyelet 12 arranged on the to attach a chain or the like via a snap hook is. The lamp head 13 is arranged on the front, which as Is formed hollow body and has an external thread 14, that in a correspondingly shaped internal thread of the lamp body can be screwed in. The flashlight has an on / Switch 15 via which the diode 16 can be switched on and off is. The diode can either be monochrome, e.g. blue or emit red light, or (almost) white light. The core of the present invention is the hollow reflector 17, whose outer surface is cylindrical and the has a diameter that corresponds to the inside diameter of the lamp head 13 corresponds so that the lamp head without large Force is pushed over the hollow reflector outer jacket can. The reflector outer jacket and the lamp head inner jacket also have annular stops that fall out prevent the reflector from the lamp head.

The diode 16 can optionally be provided with a coating that is made of an acrylic plastic with embedded luminescent particles consists. The particles in question can be fluorescent or be phosphorescent and cause a changed luminous color the diode. Depending on the selected luminescent particles and their Emission spectrum overlaps this emission spectrum, the generated by the radiation coming from the LED chip becomes a new "mixed color" with the light emitting diode radiation. The spectral shift takes place towards higher wavelengths, i.e., leads to "warmer light" in any case. The Diode 16 can in particular be provided with a coating Xenon diode will be relatively inexpensive on the market today is available.

As can be seen in particular from FIGS. 2 and 3, the Hollow reflector has a central opening through which the Diode 16 can be pushed through by friction. That of the diode 16 facing reflector surface is cup-shaped.

The hollow reflector has a first conical shell part 18 approximately at the level of the light-emitting diode luminous point (or area) on what is a cylindrical Shell part 19 and another conical second Connect jacket part 20. The jacket parts 18 and 19 or their Form surfaces with the common hollow reflector and lamp longitudinal axis an angle of 30 °. In practice, this has multi-stage hollow reflector with regard to the emitted Luminosity proven to be optimal. In addition to the pure, the light This hollow reflector also has reflective properties the advantage that the diode is not only held, but also is always reproducibly centered in the same position, so that Loss of light can be largely eliminated.

The reflector 17 also has in the area of its opening an annular extension to accommodate the lower paragraph of the diode glass body 21.

The hollow reflector 17 is supported on an annular Paragraph 22 on the inside of the flashlight head. Also owns the hollow reflector 17 has a larger-diameter jacket part 24, which is located on an annular shoulder 25 of the lamp head inner casing supports and with which the reflector falls out the lamp head is avoided.

The parts shown in Fig. 1 can be assembled as follows be, for example, when the diode 16, which has plug contacts is attached to a board, not shown, exchanged has been. Depending on whether the reflector jacket is is based solely on the aforementioned paragraph 22, which inside the jacket in the lamp head 13 or at the upper inner edge of the lamp body 10 may be arranged, or whether the Reflector outer jacket 17 at its lower end a partial jacket piece has a larger radius for which a wide groove-shaped recess is provided in the lamp shell inner head, is the reflector 17 with its opening the diode 16 is pushed and then over the reflector outer jacket the lamp head 13, which is then connected to the lamp housing 10 is screwed. In the other case, the reflector is first inserted into the lamp head and then through it formed unit moved over the diode 16 and the lamp head screwed to the lamp housing. In the latter case will fall out of the reflector 17 by the on the lamp head inner jacket incorporated ring or other there Prevents attacks.

The flashlight shown is small and has an overall length of less than 6 cm with an outer diameter, which is less than 1.5 cm. This flashlight can be easily carried as a keychain.

4 to 7 show further lamp shapes according to the invention, in which, however, each instead of a single diode a large number of diodes are used as illuminants. Each the diode is surrounded by a reflector. For each of these a diode and a reflector existing sub-unit applies The same as described above.

4a to c show a lamp 26 which consists of 7 individual diode-reflector subunits exists, which are arranged side by side are. The adjacent reflectors 17 are each interconnected so that the "7" series is a compact Unit results, which is surrounded by a lamp housing 27. in the Difference to incandescent lamps, both because of the size of the Illuminants as well because of the corresponding heat development require a large space, can be equipped with diodes Luminaires can be built much smaller. Because of the Missing size restrictions can create any design shape will be realized.

5a to c shows a lamp with 14 light-emitting diodes, each are arranged in a reflector 17. Such a lamp has a high luminosity with a small footprint.

Fig. 6 shows a lamp in which a central diode 16 with a reflector 17 around six further diodes 16 with reflectors 17 are arranged. This lamp can also be made larger Radii by further diodes arranged in a circle expand as desired. As basically according to the state of the art known in multi-phase lighting, can also be provided that the diodes or diode groups individually are switchable, so that selectively only a part of the Diodes is turned on. In principle, it is within the framework of the present invention, by the diodes turned on to also generate certain patterns or the like.

7a to k show different lamp designs, at which each have several diode reflector units from the previous ones described type can be used. The arrangement of the LEDs according to a certain pattern in the room and their number depends on the respective needs, i.e. the desired light intensity, the room geometry and the purpose the lamp. Possibly. it is also appropriate to use an existing one Space several arranged singly in a light tub To use lighting units, then like a spot can be aligned.

7a shows a lamp 28 with three arranged in a star shape Diodes, each surrounded by reflectors. Such "3" group can be accommodated in a relatively small space be, for example, in the lamp head rod-shaped flashlight. This also applies to the arrangement 29 according to FIG. 7b, in which seven light-emitting diodes each have Reflectors are combined into one unit.

The system can - as from Fig. 7c and 7g in detail can be seen - as desired by stringing further ones together Complete LEDs, the totality of the LEDs 7c is essentially hexagonal or also a square or another according to FIG. 7g can have polygonal shape. The LEDs can also, as shown in Fig. 7d, annular or semi-circular (see Fig. 7e) or on an arc line (Fig. 7f) be arranged. The shape according to FIG. 7f can also be designed in this way realize that sub-areas of the carrier, on the respective Diode-reflector units are arranged, flexible are, i.e. that the arch shape changes within certain limits can be.

7h show further geometric design options, with the lines in increasing order and spaced apart, starting with one diode up to five diodes, one Lighting fixtures created with a corresponding profile could be. The right-angled profiles are similar 7i, 7j and 7k. It is obvious that because of the Smallness of the luminaires can also be constructed geometrically let that (similar to self-illuminating digital displays known in principle) letters, numbers, figures up to have moving images generated.

Even if the above exemplary embodiments provide in each case that the individual diodes are assigned to the corresponding ones In contrast, reflectors are arranged in one plane also the ability to put the diodes and reflectors in to arrange several levels, for example in the shape of a pyramid. The LEDs used in the context of such Illuminants can all have the same or different emission spectra have.

The flashlight shown in Figs. 8 and 9 corresponds to in the structure of the small-sized rod-shaped flashlight 1 and 2. The same parts are therefore given the same reference numerals Mistake. The lamp 10 has a clip 30 which is made of is a sheet-shaped flat body, at its free end a spacer 31 is arranged. On his opposite The end of the clip 30 is with a partial ring profile body 32 connected, the pre-stressed on the outer casing is applied and this over an angular range of significantly more than 180 °, for example 220 ° to 270 °. The partial ring profile body However, 32 is not rigid with the lamp housing connected, but rotatable, as shown by the double arrow 33 is visible. In the illustrated in Fig. 8 Position, the clip 30 is rotated such that the pressure switch 15 exposed and can be operated by the user. Around (after switching off the flashlight) the pressure switch 15 to secure against inadvertent actuation, the Clip 30 moved together with the partial ring profile body 32 in this way or twisted that the clip 30 that shown in Fig. 9 Assumes position in which it covers the pressure switch 15. The bottom of the clip is spaced from the pressure switch 15, so that even with a slight deflection of the clip 30 a Remaining distance remains.

The clip 30 can, however, together with the partial ring profile body 32 also completely removed from the flashlight housing shell and pushed or plugged in rotated by 180 °, so that the clip points in the opposite direction and the partial ring profile body 32 on the lamp head 13 or in it Proximity to the relevant housing jacket.

Alternatively, instead of the partial ring profile body shown 32 also a full ring profile body can be used, the a perfect fit on the lamp housing jacket or in one provided there Groove is created or inserted. The design in question can also be used in a corresponding manner for slide switches.

The embodiment variant shown in FIG. 10 makes it clear that like that shown in Figs. 1, 2, 8 and 9 with batteries equipped flashlight also via an external power supply, such as a car cigarette lighter. To for this purpose the cover 11 is unscrewed and together with the inserted batteries removed. Instead, it becomes an end piece 34 screwed into the flashlight, the one with an extended one Cylinder body 35 is connected on its end side a spring 36 is arranged with which the current contact to the Light source or diode is produced. Further spring bodies 37 are (as a ground contact) on the flashlight housing jacket. The Power supply is provided by a cable 38 with a suitable transformer end piece, a normal voltage of 220 V to 110 V or a car battery voltage of 12 V to the desired one Transform the diode supply voltage. Such a lamp then no longer has to be operated by batteries. In particular can then this lamp in appropriate carriers or brackets are inserted, as is shown in FIGS. 11a to c is made clear. 11a to c show a principle known lampshade 39, but any other desired Can have shape. To a lamp according to Fig. 1 or 2 using an adapter piece according to FIG. 10 as living room lighting to be able to use a holder 40 is provided, into which the rod-shaped lamp 10 can be inserted.

12a to c and FIG. 13 show a further development of a Reflector 13, the resilient clip 41 on its underside has that after sliding the reflector 17 on the Diode 16 engages behind the base of the base 21 of the diode 16, so that the diode and the reflector are no longer one form detachable unit.

Claims (17)

Lamp, in particular a living room, table or flashlight with a lamp head (13) which has a light source (16) which is arranged in a hollow reflector (17) and, with its plug and / or connection contacts, projects through an opening in the hollow reflector on the rear,
characterized,
that the light source is a light-emitting diode (16), that the opening in the hollow reflector (17) is the same as the outer contour of the light-emitting diode (16) except for a slight clearance or tolerance, that the position of the hollow reflector is based on its outer casing design and the design of the lamp head inner casing is clearly defined both in the center and in the axial direction in the lamp head and that the hollow reflector has an at least substantially conical reflector part (18) which surrounds the light-emitting chip of the light-emitting diode. Lamp according to claim 1, characterized in that the Hollow reflector (17) is designed as a body, the one has cylindrical stepped outer surface, which the same except for a slight backlash or tolerance Diameter like the stepped cylindrical lamp head inner jacket has, whereby the hollow reflector on the annular step (24) of the cylinder jacket parts on one appropriately trained level in the lamp head inner jacket is secured against falling out. Lamp according to claim 1, characterized in that the Hollow reflector has a conical outer jacket that except for a small game or tolerance measure on the uniform The inner cone of the lamp head is tight all around is present. Lamp according to one of claims 1 to 3, characterized in that that the conical reflector part (18) with the common hollow reflector and lamp housing longitudinal axis forms an angle of 10 ° to 45 °, preferably 30 °. Lamp according to claim 4, characterized in that the Hollow reflector next to the first, the light-emitting one Chip of the LED surrounding reflector part (18) Area of larger cone diameter parallel to this arranged second conical shell part (20). Lamp according to claim 5, characterized in that between the first and the second conical shell part (18, 20) a cylindrical casing part (19) is arranged is, the hollow reflector the front diode glass end towered only slightly and / or the light emitting diode at least 0.5 cm behind the open end of the lamp head (16) is arranged. Lamp according to one of claims 1 to 6, characterized in that that the opening of the hollow reflector (17) a ring-shaped extension to accommodate the back of the floor of the lower diode glass body paragraph (21). Lamp according to one of claims 1 to 7, characterized in that that the hollow reflector (17) on its bottom periphery Has locking means (41), the rear of the diode base include. Lamp according to one of claims 1 to 8, characterized in that in the lamp head several LEDs next to each other are arranged, each LED (16) individual reflector (17) is assigned, within which it is centered, and that the number of honeycomb arranged Reflectors to a one-piece body with an outer jacket adapted to the lamp head inner jacket is integrated. Lamp according to claim 9, characterized in that the one-piece body has a jacket profile that the Inner jacket of the lamp head is adapted. Lamp according to one of claims 8 or 9, characterized in that that at least one reflector (17), preferably several reflectors at an angle up to 45 °, preferably are arranged pivotable up to 30 °. Lamp according to one of claims 9 to 11, characterized in that that the individual reflectors (17) side by side on a line, an arc, a circle or rotationally symmetrical are arranged around a central point. Lamp according to one of claims 1 to 12, characterized in that that the lamp body (10) is rod-shaped , preferably the rod-shaped lamp body (10) in an annular or cylindrical holder (40) Lampshade (39) is inserted. Lamp according to one of claims 1 to 13, characterized in that that the LED glass body with a layer is coated, the luminescent particles, in particular fluorescent or phosphorizing material in Has embedded plastic (acrylic), which preferably by spraying or dipping into an appropriate one Solution has been applied. Lamp according to claim 14, characterized in that the Light emitting diode or the light emitting diodes are Xe diodes or one Xe diode is. Lamp according to one of claims 1 to 8, characterized in that the lamp head (13) has a front cover has, which is designed as a converging lens. Lamp according to one of claims 1 to 8, characterized in that the on the outer surface of the lamp housing arranged pressure or push switch (15) against an unintentional Operate covered by a clip (30) is to expose the pressure or push switch (15) detachable, rotatable or displaceable on the lamp housing jacket is attached.

Images