Tube for a semiconductor tube lamp and semiconductor tube lamp comprising the tube

Abstract

Tube (42) for a semiconductor tubular lamp (41), which deviates in profile from a closed circular ring-shaped basic shape (45, 46) in at least one functional region (43, 44), wherein the tube (42) is a glass tube and the at least one functional region (43, 44) has at least one function determined by its shape.

Description

The invention relates to a tube for a semiconductor tubular lamp. The invention further relates to a semiconductor tubular lamp having such a tube. The invention is particularly applicable to fluorescent lamp LED retrofit lamps, particularly for replacing conventional tubular or rod lamps of the T5 or T8 type.LED retrofit lamps for rod lamps (e.g. line lamps or fluorescent lamps) are known, which use light-transmissive plastic tubes as bulbs. The plastic tubes are hollow cylindrical and straight. The plastic tubes thus have a circular ring-like basic shape in cross section. The LED retrofit lamps have a printed circuit board which is equipped with LEDs and is fastened on a profile-like heat sink. The heat sink has the shape of a cylinder cut along a longitudinal axis. The latter has a profile in the form of a circular section or circular segment. The printed circuit board is mounted on the planar surface.In one variant, the heat sink with the printed circuit board is inserted into the plastic tube and fits with its curved lateral surface against an inner side of the plastic tube. The heat sink is then typically glued to the plastic tube. The circuit board is consequently also located in the plastic tube.In another variant, the plastic tube is cut open longitudinally, i.e. it is shaped in profile like an annular sector with two free ends or edges. The plastic tube is connected at the edges to the heat sink, namely in such a way that it bulges over the flat side of the heat sink which is covered with the printed circuit board. The curved lateral surface of the cooling body is then free and may be provided, for example, with a cooling structure (cooling ribs, fins, etc.).The printed circuit board can be fastened to the heat sink by means of adhesive bonding, by means of clipping or latching or by positive locking.The document WO 2013 / 056 516 A1 describes an illumination device comprising a light source and having a casing, wherein the casing has an upper portion with scattering properties such that a part of the light from the light source passes laterally and rearward relative to a main emission direction of the light source. The document EP 1 813 857 A1 describes a linear light source with a linear arrangement of LEDs, wherein the linear light source comprises a housing with a rod-shaped body with a convex cross section of optically transparent material. The publication DE 20 2010 001 127 U1 describes an LED lighting device with two lighting sides, wherein the lighting device comprises a cooling body with a first cooling body base and with a second cooling body base, which are designed to accommodate LED lighting modules.It is the object of the present invention to overcome the disadvantages of the prior art at least partially and in particular to provide a particularly easily mountable, robust, inexpensive and / or long-lived semiconductor tubular lamp.This object is achieved according to the features of the independent claims. Preferred embodiments can be found in particular in the dependent claims.The object is achieved by a tube for a semiconductor tubular lamp, wherein the tube has a closed profile and deviates in profile from a circular ring-shaped basic shape at at least one functional region, wherein the tube is a glass tube, and wherein the at least one functional region has at least one function caused by its shape.The at least one functional region is an inwardly bulging region, wherein the tube has at least two inwardly bulging regions which lie mirror-symmetrically with respect to a plane intersecting the tube longitudinally and are designed to receive a double-T-shaped carrier, on the opposite flat sides of which at least one printed circuit board in each case rests, such that the carrier can be guided by means of the region bulging inward between the flat sides in the direction of a central part.The fact that the tube is a glass tube results in the advantage, in contrast to a plastic tube, that production costs can be reduced. Also, there is a higher stability of the glass tube with respect to mechanical stresses, e.g. with respect to bending, particularly in the case of large lengths. In addition, a glass tube is more scratch-resistant than a plastic tube. In addition, the glass tube has a substantially better UV stability.By forming the at least one functional region as an integral component of the tube, it is possible to dispense with production and attachment of separate elements which would otherwise provide the associated function(s). Thus, for example, an adhesive for fastening it can be dispensed with. In turn, this can reduce the use of outgassing substances, which can lead to failure and / or turbidity of the lamp. Likewise, loss of adhesion of the adhesive over the service life can be avoided. In addition, scratches and / or damage to the glass surface on the glass tube inner side can be avoided by holders or clips.Moreover, such a tube can be produced in a cost-saving manner. The profiling of the glass tube additionally enables a rotationally secure fastening of end caps by form-fitting.The glass tube may have one or more functional regions. These may be distributed in the circumferential direction and / or in the longitudinal direction of the tube. A functional area may have or perform one or more functions.The semiconductor tubular lamp has at least one semiconductor light source. Preferably, the at least one semiconductor light source comprises at least one light emitting diode. If a plurality of light emitting diodes are present, these can illuminate in the same color or in different colors. A color may be monochrome (e.g., red, green, blue, etc.) or multi-chrome (e.g., white). The light emitted by the at least one light-emitting diode can also be an infrared light (IR LED) or an ultraviolet light (UV LED). A plurality of light emitting diodes may generate mixed light; e.g., white mixed light. The at least one light emitting diode can contain at least one wavelength-converting phosphor (conversion LED). The phosphor can alternatively or additionally be arranged remote from the light-emitting diode ("remote phosphor"). The at least one light emitting diode can be present in the form of at least one individually housed light emitting diode or in the form of at least one LED chip. Multiple LED chips may be mounted on a common substrate ("submount"). The at least one light emitting diode can be equipped with at least one dedicated and / or common optical unit for beam guidance, e.g. at least one Fresnel lens, collimator, and so forth. Instead of or in addition to inorganic light-emitting diodes, e.g. based on InGaN or AlInGaP, organic LEDs (OLEDs, e.g. polymer OLEDs) can generally also be used. Alternatively, the at least one semiconductor light source can have, for example, at least one diode laser.The semiconductor light source(s) may be arranged on at least one circuit board or board. The printed circuit board may additionally have at least one electrical and / or electronic component for operating the at least one semiconductor light source (driver component). The printed circuit board can then also be referred to as a "light engine", without the driver component also being referred to as a module.The material of the glass tube may be transparent or opaque or light-scattering, for example milk glass.In one configuration, the at least one functional region makes up not more than 60%, in particular not more than one half, in particular not more than 40%, of a circumferential length of the tube, in particular with respect to a tube having a completely circular profile. As a result, e.g. in retrofit lamps for tubular lamps, an outer shape can easily be maintained which is analogous to conventional tubular lamps.In another embodiment, at least one functional region has an optical function or the function comprises an optical function. The shape of at least one functional region serves in particular to deflect light emitted by at least one light source. The functional region may in particular have a shape which causes a lens-like optical effect. The functional region may then therefore serve as a lens region locally integrated into the glass tube.In another embodiment, at least one functional region having the optical function has a thickened wall thickness. This is particularly advantageous for implementing a lens-like optical effect.In yet another embodiment, at least one functional region has a fastening function or the function is a fastening function. The functional region thus serves for the fastening of one or more components of the semiconductor tubular lamp. It is thus possible to dispense with additional holding or fastening elements (e.g. holders, clips, etc.), which simplifies assembly and saves costs.The fastening function can, however, also be used to fasten mounting or fastening elements to the pipe in a simple manner, which can then, for example, hold the printed circuit board.It is another configuration that the fixing function is a function for positioning a circuit board in the pipe. In particular, additional fixing elements can be dispensed with here, which enables high savings, in particular in the case of a strip-shaped printed circuit board. Thus, recesses, notches or slots on a circuit board to be fastened by means of the glass tube can be dispensed with.In addition, it is an embodiment that at least one functional region has a covering function for at least one semiconductor light source. This makes it possible in a simple manner to protect the at least one semiconductor light source and a substrate optionally carrying this semiconductor light source.In yet another embodiment, at least one functional region is an inwardly projecting region of the tube. This has the advantage that the functional region can be produced from a completely circular profile by simple pressing in at least locally higher temperature. In addition, because of the smaller circumference, glass material can thus be used to increase a wall thickness in a targeted manner.In addition, in one configuration, at least one functional region is a planar region. Such a functional region can be produced particularly easily. It may serve, for example, as a protective cover for at least one semiconductor light source.An inwardly bulging portion protrudes further into the interior of the pipe than a planar portion. An inwardly bulging region has in particular a curvature. This configuration has the advantage that a lens can be formed as an optical partial region in a particularly simple manner, in particular a concave-convex lens. Such a functional region can also serve as a dome-like protective cover for at least one semiconductor light source. A tube having this configuration can be used, for example, to arch over a semiconductor light source located outside the tube (e.g. attached to a cooling body) or a printed circuit board equipped therewith with this functional region.The at least two inwardly projecting regions are designed mirror-symmetrically to a plane which intersects the tube longitudinally. Thus, in a particularly simple manner, a mounting or guiding of a component of the semiconductor tube lamp in the glass tube is made possible. In particular, a strip-shaped printed circuit board can be easily introduced into the glass tube and held there. No additional fixations (e.g. holders, clips, etc.) are necessary for this purpose. The inwardly projecting regions need not extend over the entire length of the glass tube.It may be sufficient if an inwardly bulging region is located on each side.However, on each side, distributed over the length, at least two inwardly projecting, in particular inwardly bulging, regions can also be located, which are spaced apart from one another ("local regions"). The printed circuit board can then be fixed on each longitudinal side on at least two contact surfaces spaced apart from one another. Such local regions may bulge inwardly, for example, in the form of a cone or a spherical dome.The glass tube can be completely or partially coated. A glass substrate has increased resistance to plastic and / or better adhesion of the coating(s).The object is also achieved by a semiconductor tubular lamp having at least one tube as described above. This tubular semiconductor lamp can be designed analogously to the tube and yields the same advantages.In one configuration, the tubular semiconductor lamp has at least one printed circuit board fitted with at least one semiconductor light source, the tube representing a cover for the printed circuit board.In another configuration, the tubular semiconductor lamp has a cooling body extending along its longitudinal axis, on which the printed circuit board and the tube rest, wherein the tube bulges over the printed circuit board by means of at least one functional region.In yet another embodiment, the printed circuit board is accommodated in the tube and is guided by means of the inwardly bulging regions.The semiconductor tubular lamp has a double-T-shaped carrier, on the opposite flat sides of which at least one printed circuit board rests in each case, and the carrier is guided by means of the regions bulging inward between the flat sides in the direction of a central part of the carrier.In another development, the semiconductor tubular lamp is a retrofit lamp, in particular for replacing a conventional fluorescent lamp, in particular of the type T5 or T8, or a conventional line lamp.The above-described properties, features and advantages of this invention and the manner in which these are achieved become clearer and more clearly comprehensible in conjunction with the following schematic description of exemplary embodiments, which are explained in more detail in conjunction with the drawings. For the sake of clarity, identical or identically acting elements can be provided with identical reference numerals. FIGS. 1 to 9 are sectional front views showing respective first to fifth embodiments of a semiconductor fluorescent lamp.FIG. 1 shows a first exemplary embodiment of a semiconductor tubular lamp in the form of an LED retrofit lamp 1 for replacing, for example, a fluorescent lamp ("rod lamp") of the type T5 or T8.The LED retrofit lamp 1 has a profile-like heat sink 2, for example made of aluminum, which has a circular segment-like basic shape. The planar surface 3 of the cooling body 2 on the upper side here has a likewise planar depression 4. A printed circuit board 5 is mounted with its rear side 6 in a planar manner in the depression 4. A front side 7 is equipped with a plurality of semiconductor light sources in the form of LEDs 8, which are arranged spaced apart from one another in series along a longitudinal axis L of the LED retrofit lamp 1. An outer side 9 of the cooling body 2 is formed by the cylindrical lateral surface. The outer side 9 can have a cooling structure (see FIG. ).The depression 4 is bounded on the left and right sides by upstanding edges 10. The edges 10 carry a light-transmissive bulb in the form of a glass tube 11, the profile of the glass tube 11 having two sections, namely a first, circular-ring-shaped section 12 and a second, planar section 13 limited ("local") in its extent. The transitions 14 between the two sections 12 and 13 are rounded, namely with a narrower radius of curvature than that of the first section 12. the glass tube 11 rests with the transitions 14 on the edges 10 of the cooling body 2, such that the planar section 13 lies parallel to the depression 4 and thus also covers the printed circuit board 5 with the LEDs 8. The planar portion 13 serves as a functional region for the circuit board 5, i.e., as a protective cover, among others.The light emitted by the LEDs 8 initially emits through the planar section 13 of the glass tube 11 into an interior 15 of the glass tube 11 and further outward through the circular ring-shaped section 12. The outer side 9 of the cooling body 2 and an outer side of the annular section 12 together form a cylindrical outer surface of the LED retrofit lamp 1, which is shaped practically analogously to a jacket-side outer surface of a conventional fluorescent lamp, for example with regard to its diameter and its length.The glass tube 11 may be completely or partially coated, for example with a opaque layer, an anti-reflection layer, a scattering layer, a hard layer, etc.FIG. 2 shows a second exemplary embodiment of a semiconductor tubular lamp in the form of an LED retrofit lamp 21, the LED retrofit lamp 21 being configured similar to the LED retrofit lamp 1, but having no planar section serving as a functional region, but rather a second section 23 (not to scale) which acts as a functional region and bulges inward into the glass tube 22. The second section 23 also serves here as a protective cover. The second section 23 allows a greater overall height of the printed circuit board 5 with the LEDs 8 arranged thereon and optionally further components.FIG. 3 shows a third exemplary embodiment of a semiconductor tubular lamp in the form of an LED retrofit lamp 31 The LED retrofit lamp 31 is configured similar to the LED retrofit lamp 21, but has a material thickening or increased wall thickness (not to scale) on the second section 33 bulging inward into the glass tube 32. As a result, the second section 33 serves as a functional region not only for covering the printed circuit board 5, but also has an optical function. The second section 33 is shaped here in a concave-convex lens, through which at least a part of the light emitted by the LEDs 8 passes. The material for the increased wall thickness may result, for example, from a circumferential length of the second section 33 being less than an originally sector-shaped section.In the case of the LED retrofit lamps 1, 21 and 31, the glass tube 3, 22 and 32 as a whole serves as a cover, without it having to be cut open in a complicated manner. For example, an inexpensive conventional glass tube 3, 22 or 32 may be heated and pressed in in by simple pressing in at least one functional region to be produced in the form of the respective second section 13, 23 or 33. In the two FIGS. 4 and 5 shown below, on the other hand, the printed circuit board 5 is introduced into the glass tube.FIG. 4 shows a fourth exemplary embodiment of a semiconductor tubular lamp in the form of an LED retrofit lamp 41. the printed circuit board 5 has been introduced into the glass tube 42 and is held by it perpendicular to the longitudinal axis L. For this purpose, the glass tube 42 has at least two functional regions 43, 44 projecting in a curved manner from the inside, of which two functional regions 43, 44 are shown here. The functional regions 43, 44 are situated here, for example, mirror-symmetrically to a plane E that intersects the glass tube 42 longitudinally. The plane E runs perpendicularly through the longitudinal axis L. In the sectional plane shown, the glass tube 42 furthermore has a first circular sector-shaped section 45 adjoining above it and a second circular sector-shaped section 46 adjoining below it.The functional regions 43, 44 can extend continuously along the longitudinal axis L. However, it is also possible to use a plurality of functional regions 43 and 44 arranged in series at a distance along the longitudinal axis L, preferably at least two functional regions 43 and at least two functional regions 44. The functional regions 43 and 44 guide the printed circuit board 5 between them and fasten and position it together with the second (lower) circular sector-shaped section 46. The functional regions 43 and 44 thus serve for fastening and positioning the printed circuit board 5.FIG. 5 shows a fifth exemplary embodiment of a semiconductor tubular lamp in the form of an LED retrofit lamp 51. The LED retrofit lamp 51 likewise has at least two functional regions 53, 54 projecting in a curved manner inward, which now pinch the glass tube 52 centrally in profile. The glass tube 52 is thus designed mirror-symmetrically not only to the vertical plane E but also to a horizontal plane F.The functional regions 53, 54 are curved inward to such an extent that they leave only a comparatively narrow gap 55 between them. A double-T-shaped support 56 is inserted into the gap 55, for example made of aluminum. A printed circuit board 5 is attached to each of the opposite outer flat sides 57 of the transverse parts 58 (also referred to as flanges or straps). The LED retrofit lamp 51 therefore not only has LEDs 8 emitting into a half space, but emits light into two half spaces, namely, as illustrated here, into an upper half space and into a lower half space. For fastening and positioning the carrier 56 and thus the printed circuit boards 5, a central part 59 or web is guided through the gap 55.The functional regions 53, 54 are adjoined at the top and at the bottom by circular sector-shaped sections 60 of the glass tube 52.FIG. 6 shows a sixth exemplary embodiment of a semiconductor tubular lamp in the form of an LED retrofit lamp 61.Here, too, the circuit board 5 has been introduced into the glass tube 62 and is held by it perpendicular to the longitudinal axis L. For this purpose, the glass tube 62 has at least two functional regions 63, 64 projecting in an inwardly curved manner. The functional regions 63, 64 are situated here, for example, mirror-symmetrically to the perpendicular plane E that intersects the glass tube 62 longitudinally. In the sectional plane shown, the glass tube 62 furthermore has a first circular sector-shaped section 65 adjoining above it and a second circular sector-shaped section 66 adjoining below it. The sector-shaped section 66 has centrally and thus in the region of the vertical plane E at least one further inwardly curved protruding functional region 67.The functional regions 63, 64, 67 can extend continuously along the longitudinal axis L. However, it is also possible to use a plurality of functional regions 63, 64 and 67, respectively, arranged in series at a distance along the longitudinal axis L, preferably at least two functional regions 63, at least two functional regions 64 and at least two functional regions 67.The upper functional regions 63 and 64 guide the circuit board 5 between them together with the lower functional region 67 and fasten and position them. The functional regions 63, 64 and 67 thus serve for fastening and positioning the printed circuit board 5.FIG. 7 shows a sixth exemplary embodiment of a semiconductor tubular lamp in the form of an LED retrofit lamp 71.Here, too, the circuit board 5 has been introduced into the glass tube 72 and is held by it perpendicular to the longitudinal axis L. For this purpose, the glass tube 72 has at least two pairs of inwardly curved protruding functional regions 73, 74 and 75, 76, respectively. The functional regions of a pair 73, 74 and 75, 76 are arranged spaced apart in the circumferential direction about the longitudinal axis.The pairs 73, 74 and 75, 76 are designed here, for example, mirror-symmetrically to the vertical plane E, which intersects the glass tube 72 longitudinally. In the sectional plane shown, the glass tube 72 furthermore has a first circular sector-shaped section 77 adjoining above it and a second circular sector-shaped section 78 adjoining below it.The functional regions 73, 74 and 75, 76 can extend continuously along the longitudinal axis L. However, it is also possible to use a plurality of functional regions 73, 74 or 75, 76 arranged in series at a distance along the longitudinal axis L, preferably at least two functional regions 73, at least two functional regions 74, etc. These functional regions 73, 74 or 75, 76 can be formed, for example, in the form of "points".The upper functional regions 73 and 75 of the pairs 73, 74 and 75, 76, respectively, together with the lower functional regions 74 and 76, respectively, guide the circuit board 5 between them and fasten and position it. The functional regions 73, 74 and 75, 76 thus serve for fastening and positioning the printed circuit board 5.FIG. 8 shows a sixth exemplary embodiment of a semiconductor tubular lamp in the form of an LED retrofit lamp 81.The circuit board 5 has been inserted into the glass tube 82 and is held thereby perpendicular to the longitudinal axis L. For this purpose, the glass tube 82 has at least two pairs of inwardly curved protruding functional regions 83, 84 or 85, 86. The functional regions of a pair 83, 84 or 85, 86 are arranged spaced apart in the circumferential direction about the longitudinal axis.The pairs 83, 84 or 85, 86 here are designed, for example, mirror-symmetrically to the vertical plane E, which intersects the glass tube 82 longitudinally, and to the horizontal axis F, which intersects the glass tube 82 longitudinally. In the sectional plane shown, the glass tube 82 furthermore has a first circular sector-shaped section 87 adjoining above it and a second circular sector-shaped section 88 adjoining below it.The functional regions 83, 84 or 85, 86 can extend continuously along the longitudinal axis L. However, it is also possible to use a plurality of functional regions 83, 84 or 85, 86 arranged in series at a distance along the longitudinal axis L, preferably at least two functional regions 83, at least two functional regions 84, etc. These functional regions 83, 84 or 85, 86 can be formed, for example, in the form of "points".The upper functional regions 83 and 85 of the pairs 83, 84 and 85, 86 guide the circuit board 5 between them and fasten and position them together with the lower functional regions 84 and 86 respectively. The functional regions 83, 84 or 85, 86 thus serve for fastening and positioning the printed circuit board 5.Although the invention has been illustrated and described in more detail by the exemplary embodiments shown, the invention is not restricted thereto and other variations can be derived therefrom by the person skilled in the art without departing from the scope of protection of the invention.Thus, in FIG. 4, not only the printed circuit board 5 may be introduced into the glass tube 42 but also a heat sink connected thereto, for example. This heat sink may contact the glass tube 42 for more effective heat dissipation.Also, generally, the circuit board may include, in addition to the LEDs, a driver or parts of a driver for driving the LEDs.End caps may generally be conventionally attached to the ends of the tube, for example of the type G5 or G13.In general, "a", "an", etc., can be understood to mean a singular or a plurality, in particular in the sense of "at least one" or "one or more", etc., as long as this is not explicitly excluded, e.g. by the expression "exactly one", etc.A numerical indication can also comprise exactly the indicated number and a usual tolerance range, as long as this is not explicitly excluded.Reference numerals denote reference numerals1 LED retrofit lamp 2 cooling body 3 upper-side planar surface of the cooling body 4 depression 5 printed circuit board 6 rear side of the printed circuit board 7 front side of the printed circuit board 8 LED 9 outer side 10 upstanding edge of the cooling body 11 glass tube 12 first, circular ring-shaped section of the glass tube 13 second, The invention also relates to a planar section of the glass tube 14 transition between the sections 15 interior of the glass tube 21 LED retrofit lamp 22 glass tube 23 second section of the glass tube 31 LED retrofit lamp 32 glass tube 33 second section of the glass tube 41 LED retrofit lamp 42 glass tube 43 inwardly curved functional region 44 inwardly curved functional region 45 first circular sector-shaped section of the glass tube 46 second circular sector-shaped section of the glass tube 51 LED retrofit lamp 52 glass tube 53 inwardly curved functional region 54 inwardly curved functional region 55 gap 56 carrier 57 outer flat side 58 transverse part of the carrier 59 central part of the carrier 60 circular sector-shaped section of the glass tube 61 LED retrofit lamp 62 glass tube 63 inwardly curved functional region 64 inwardly arched functional region 65 first circular sector-shaped section of the glass tube 66 second circular sector-shaped section of the glass tube 67 inwardly arched functional region 71 LED retrofit lamp 72 glass tube 73 inwardly arched functional region of a first pair 74 inwardly arched functional region of a first pair 75 inwardly arched functional region of a second pair 76 inwardly arched functional region of a second pair 77 first circular sector-shaped section of the glass tube 78 second circular sector-shaped section of the glass tube 81 LED retrofit lamp 82 glass tube 83 inwardly arched functional region of a first pair 84 inwardly arched functional region of a first pair 85 inwardly arched functional region of a second pair 86 inwardly arched functional region of a second pair 87 first circular sector-shaped section of the glass tube Glass tube 88 is a second sector-shaped section of the glass tube L longitudinal axis E vertical plane F horizontal plane

Claims

Tube (11; 22; 32; 42; 52; 62; 72; 82) for a semiconductor tubular lamp (1; 21; 31; 41; 51; 61; 71; 81) which has a closed profile and deviates in profile at at least one functional region (13; 23; 33; 43, 44; 53, 54; 63, 64, 67; 73-76; 83-86) from an annular basic shape (12; 45, 46; 60; 65, 66; 77, 78; 87, 88), wherein - the tube (11; 22; 32; 42; 52; 62; 72; 82) is a glass tube and - the at least one functional region (13; 23; 33; 43, 44; 53, 54; 63, 64, 67; 73-76; 83-86) has at least one function caused by its shape, wherein at least one functional region (23; 33; 43, 44; 53, 54; 63, 64, 67; 73-76; 83-86) is an inwardly bulging region, and wherein the tube (42; 52; 62; 72; 82) has at least two inwardly bulging regions (43, 44; 53, 54; 63, 64, 67; 73-76; 83-86), which lie mirror-symmetrically to a plane (E) longitudinally intersecting the tube (42; 52; 62; 72; 82) and are configured to receive a double-T-shaped carrier (56), on the opposite flat sides (57) of which at least one printed circuit board (5) rests in each case, such that the carrier (56) can be guided by means of the regions (53, 54) bulging inward between the flat sides (57) in the direction of a central part (59).The pipe (32) according to claim 1, wherein at least one functional region (33) has an optical function.Pipe (32) according to claim 2, wherein at least one functional region (33) having the optical function has a thickened wall thickness.Pipe (42; 52; 62; 72; 82) according to one of the preceding claims, wherein at least one functional region (43, 44; 53, 54; 63, 64, 67; 73-76; 83-86) has a fastening function.The pipe (42; 52; 62; 72; 82) according to claim 4, wherein the fixing function is a function of positioning a circuit board (5) in the pipe (42; 52; 62; 72; 82).Pipe (42; 52) according to one of the preceding claims, wherein at least one functional region (13; 23; 33) has a covering function for at least one semiconductor light source (8).The pipe (42; 52) according to any of the preceding claims, wherein said at least one functional area (13; 23; 33; 43, 44; 53, 54; 63, 64, 67; 73-76; 83-86) constitutes not more than one half of a circumferential length of said pipe (11; 22; 32; 42; 52; 62; 72; 82).The pipe (11; 22; 32; 42; 52; 62; 72; 82) according to any one of the preceding claims, wherein at least one functional region (13; 23; 33; 43, 44; 53, 54; 63, 64, 67; 73-76; 83-86) is an inwardly projecting region of the pipe (11; 22; 32; 42; 52; 62; 72; 82).Pipe (11) according to any one of the preceding claims, wherein at least one functional region (13) is a planar region.A semiconductor tubular lamp (1; 21; 31; 41; 51; 61; 71; 81) comprising a tube (11; 22; 32; 42; 52; 62; 72; 82) according to one of the preceding claims and at least one printed circuit board (5) equipped with at least one semiconductor light source (8), wherein the tube (11; 22; 32; 42; 52; 62; 72; 82) represents a cover for the printed circuit board (5), and wherein the semiconductor tubular lamp (51) comprises a double-T-shaped carrier (56), on the opposite flat sides (57) of which in each case at least one printed circuit board (5) rests and the carrier (56) is guided by means of the regions (53, 54) bulging inward between the flat sides (57) in the direction of a central part (59).The semiconductor tubular lamp (1; 21; 31) according to claim 10 in combination with a tube (11; 22; 32) according to claim 2, wherein the semiconductor tubular lamp (1; 21; 31) has a cooling body (2) extending along its longitudinal axis (L), on which the printed circuit board (5) and the tube (11; 22; 32) rest, wherein the tube (11; 22; 32) bulges over the printed circuit board (5) by means of a functional region (13; 23; 33).

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