JP2013201102A - Straight tube shape lamp, and illuminating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a straight tube shape lamp capable of obtaining a non-combustibility and anti-scatter effect.SOLUTION: A straight tube shape lamp 10 has a luminous module 16 having a semiconductor luminous element 23 housed in a straight tube-shaped tube body 17. The tube body 17 is provided with a resin cover 26 with light-transmitting property, and a non-combustibility sheet 12 with light-transmitting property is wound around an outer face of the resin cover 26. Both side portions 12a of the non-combustibility sheet 12 are clamped and fixed between a fastening member 13 and the resin cover 26 by the fastening member 13 along a length direction of the tube body 17.

Description

  Embodiments described herein relate generally to a straight tube lamp using a semiconductor light emitting element and a lighting fixture using the straight tube lamp.

  2. Description of the Related Art Conventionally, for example, a lighting device for a vehicle used for an interior lamp of a vehicle includes a lighting device in which a straight tube lamp is covered with a globe, and a lighting device in which the straight tube lamp is exposed.

  When adopting a non-combustible structure in such a lighting device for a vehicle, the lighting device for a vehicle in which a straight tube lamp is covered with a glove can be dealt with by using a non-combustible glove based on glass fiber. .

  In a vehicle lighting device in which a straight tube lamp is exposed, the exposed straight tube lamp itself needs to be nonflammable. In the case of a straight tube lamp using a glass tube, nonflammability is obtained. Further, a straight tube lamp using a semiconductor light emitting element often uses a resin cover, and in this case, nonflammability cannot be obtained.

JP 2011-222424 A

  As described above, in the case of a straight tube lamp using a semiconductor light emitting element, if a resin cover is used, nonflammability cannot be obtained. In addition, if a glass tube is used instead of the resin cover, nonflammability can be obtained, but the glass may be scattered at the time of breakage. Therefore, in order to obtain a scattering prevention effect, the outer surface of the glass cover is covered with a resin scattering prevention member Must be covered. However, nonflammability cannot be obtained by using a resin-made anti-scattering member.

  The problem to be solved by the present invention is to provide a straight tube lamp capable of obtaining nonflammability and scattering prevention effects, and a lighting fixture using the straight tube lamp.

  In the straight tube lamp of the embodiment, a light emitting module having a semiconductor light emitting element is accommodated in a straight tube. The tubular body includes a resin cover having translucency, and a non-combustible sheet having translucency is wound around the outer surface of the resin cover. The both sides of the non-combustible sheet are sandwiched between the resin cover along the longitudinal direction of the tubular body by the fixing member and fixed.

  According to the present invention, since the resin cover is covered with the non-combustible sheet, it is possible to obtain the non-combustibility and the scattering prevention effect, and the fixing member is used to fix both sides of the non-combustible sheet along the longitudinal direction of the tubular body with the resin cover. Since it can be sandwiched between and fixed, the manufacture can be facilitated and the shape of the incombustible sheet can be reliably maintained.

The cross-sectional view of the straight tube lamp showing the first embodiment is shown, (a) is a cross-sectional view before assembling the fixing member, (b) is a cross-sectional view of the state where the fixing member is assembled. It is a side view of the lighting fixture using a straight tube | pipe type lamp same as the above. It is sectional drawing of the straight tube | pipe type lamp which shows 2nd Embodiment.

  Hereinafter, a first embodiment will be described with reference to FIGS. 1 and 2.

  The straight tube lamp 10 includes a lamp body 11, a single incombustible sheet 12 wound around the lamp body 11, and a fixing member 13 that fixes the incombustible sheet 12 to the lamp body 11.

  The lamp body 11 includes a light emitting module 16, a straight tube 17 that accommodates the light emitting module 16, and caps 18 and 19 that are attached to both ends of the tube 17.

  The light emitting module 16 includes an elongated substrate 21 along the longitudinal direction, and a plurality of light emitting units 22 provided on one surface of the substrate 21 at predetermined intervals along the longitudinal direction of the substrate 21. Each light emitting unit 22 has an LED element 23 as a semiconductor light emitting element mounted on the substrate 21 and a sealing resin 24 containing a phosphor covering the LED element 23. The phosphor is excited by blue light generated by the LED element 23 to generate yellow light, and white light in which blue light and yellow light are mixed is emitted from the surface of the sealing resin 24. In addition, as a semiconductor light emitting element, you may use other elements, such as an organic EL element, for example.

  The tubular body 17 is made of a synthetic resin having translucency, and has a resin cover 26 integrally formed by extrusion molding into a cylindrical straight tube. On the inner surface of the resin cover 26, a pair of holding grooves 27 that hold both ends of the substrate 21 are located in the entire longitudinal direction at positions offset to the opposite side to the direction in which the light from the light emitting module 16 is irradiated from the resin cover 26. It is formed over.

  In the resin cover 26, a recess 28 is formed over the entire longitudinal direction on the outer surface opposite to the direction in which the light from the light emitting module 16 is irradiated from the resin cover 26. The recess 28 is formed in a space having an elliptical cross section by a recess forming portion 29 protruding inside the resin cover 26. The width of the opening of the recess 28 that opens to the outer surface of the resin cover 26 is smaller than the maximum width in the recess 28, and the fixing member 13 is held in the recess 28 on both sides of the opening of the recess 28. A holding portion 30 is formed to protrude.

  One base 18 is a power supply side base, and a pair of substantially L-shaped power supply terminals 32 project from the end face. The base 18 is inserted into one end of the resin cover 26 and fixed. The pair of power supply terminals 32 is electrically connected to the light emitting module 16.

  The other base 19 is a non-power feeding side base, and one substantially T-shaped non-power feeding terminal 33 projects from the end face. The base 19 is inserted and fixed to the other end of the resin cover 26.

  The non-combustible sheet 12 is formed into a thin and long rectangular sheet using glass fiber, which is a non-combustible material, as a base material, and has translucency and flexibility as well as non-combustibility. The length in the longitudinal direction of the incombustible sheet 12 is formed to be equal to or longer than the length in the longitudinal direction of the resin cover 26, and the length in the short direction of the incombustible sheet 12 is at least the outer peripheral surface of the resin cover 26. It is longer than the length excluding the recess 28 in the circumferential direction, and is formed in such a length that both side portions 12a in the short direction of the incombustible sheet 12 can enter the recess 28 together.

  The fixing member 13 is made of a metal such as aluminum, has an elliptical cross section that can be fitted into the recess 28, and has the same length as the length of the resin cover 26 in the longitudinal direction.

  Then, in the manufacturing process of the straight tube lamp 10, as shown in FIG. 1 (a), the non-combustible sheet 12 is wound along the outer peripheral surface of the resin cover 26, and both side portions 12a of the non-combustible sheet 12 are placed on the recess 28 or It pushes in the hollow part 28 and arrange | positions. Subsequently, as shown in FIG. 1 (b), the fixing member 13 is pushed into the recessed portion 28 through the both side portions 12 a of the non-combustible sheet 12 from the radial direction of the resin cover 26.

  As a result, the fixing member 13 fitted in the recess 28 is held in the recess 28 by the holding portions 30 provided on both sides of the opening of the recess 28, and the both sides 12a of the incombustible sheet 12 are recessed. The state of being sandwiched and fixed between the portion 28 (the recessed portion forming portion 29) is maintained. Therefore, the noncombustible sheet 12 can be easily fixed to the resin cover 26 by a single operation of fitting the fixing member 13 into the recess 28 of the resin cover 26.

  When the fixing member 13 is fitted into the recess 28, the both sides 12a of the non-combustible sheet 12 are pulled into the recess 28 by the fixing member 13, so that the non-combustible sheet 12 is crimped to the outer peripheral surface of the resin cover 26, Generation of wrinkles and slack can be prevented. Furthermore, since the resin cover 26 and the fixing member 13 are sandwiched and fixed over the entire longitudinal direction of both side portions 12a of the non-combustible sheet 12, the shape of the non-combustible sheet 12 can be maintained.

  Further, since the fixing member 13 is made of metal, the heat generated by the LED element 23 can be absorbed through the resin cover 26 and efficiently radiated into the air.

  FIG. 2 shows a lighting apparatus 40 for a vehicle that uses the straight tube lamp 10 and that exposes the straight tube lamp 10. The lighting fixture 40 has a fixture main body 41, sockets 42 and 43 are provided in the vicinity of both ends of the fixture main body 41, and a lighting device 44 is provided on the upper surface of the fixture main body 41. One socket 42 is a power supply side socket, and the power supply terminal 32 of the base 18 of the straight tube lamp 10 is detachably attached to supply power from the lighting device 44 to the straight tube lamp 10. The other socket 43 is a non-power supply side socket, and the non-power supply terminal 33 of the base 19 of the straight tube lamp 10 is detachably mounted.

  In the straight tube lamp 10 of the present embodiment, the resin cover 26 is covered with the non-combustible sheet 12, so that the non-combustibility and scattering prevention effect can be obtained. Since both sides 12a of the incombustible sheet 12 can be sandwiched and fixed between the resin cover 26 along the longitudinal direction of the resin cover 26, the incombustible sheet 12 can be easily fixed to the resin cover 26. The shape can be maintained reliably.

  In addition, a recess 28 is formed along the longitudinal direction on the outer surface of the resin cover 26 on the opposite side to the light irradiation direction from the light emitting module 16, and fixed together with both side portions 12a of the non-combustible sheet 12 to the recess 28. By fitting the member 13, the incombustible sheet 12 can be fixed to the resin cover 26, so that the incombustible sheet 12 can be fixed without affecting the light irradiation, and the fixing member 13 can be accommodated in the recessed portion 28, so that the straight tube lamp The appearance of 10 can also be kept good.

  Next, a second embodiment will be described with reference to FIG. In addition, about the structure and effect | action similar to 1st Embodiment, the description is abbreviate | omitted using the same code | symbol.

  The tube body 17 is composed of a resin cover 26 having a semicircular cross section and a metal cover 50 having a semicircular cross section. The metal cover 50 is made of a metal such as aluminum, for example, and a flat portion 51 is formed on the side facing the resin cover 26, and the light emitting module 16 is thermally connected to the flat portion 51 and attached thereto. In the vicinity of both side portions of the flat portion 51, a pair of recessed portions 52 into which the both side portions 26a of the resin cover 26 are fitted is formed over the entire length direction.

  The length of the incombustible sheet 12 in the short direction is at least longer than the length in the circumferential direction of the outer peripheral surface of the resin cover 26, and both side portions 12a in the short direction of the incombustible sheet 12 are wound inside the both side portions 26a of the resin cover 26. It is formed to a possible length.

  The fixing member 13 is a metal cover 50, and the both side portions 12a of the non-combustible sheet 12 are sandwiched and fixed between the recessed portion 52 of the metal cover 50 and the both side portions 26a of the resin cover 26.

  When the straight tube lamp 10 is assembled, the noncombustible sheet 12 is wound along the outer peripheral surface of the resin cover 26, and both side portions 12a of the noncombustible sheet 12 are wound inside the both side portions 26a of the resin cover 26. The both side portions 26 a of the resin cover 26 are fitted into the recessed portions 52 of the metal cover 50 through the noncombustible sheet 12. Therefore, the non-combustible sheet 12 can be easily fixed to the resin cover 26 by a single operation of fitting the recesses 52 of the metal cover 50 into the both side portions 26a of the resin cover 26. The both side portions 26a of the resin cover 26 and the recessed portions 52 of the metal cover 50 may be bonded and fixed with, for example, an adhesive.

  Further, since the fixing member 13 is the metal cover 50, the heat generated by the LED element 23 is efficiently conducted to the metal cover 50, and can be efficiently radiated from the metal cover 50 into the air.

  Thus, in the straight tube lamp 10 of the present embodiment, the resin cover 26 is covered with the non-combustible sheet 12, so that non-combustibility and scattering prevention effects can be obtained.

  Furthermore, since the one fixing member 13 can sandwich and fix both side portions 12a of the incombustible sheet 12 between the resin cover 26 along the longitudinal direction, the incombustible sheet 12 can be easily fixed to the resin cover 26. In addition, the shape of the incombustible sheet 12 can be reliably maintained.

  Moreover, since the tube body 17 is composed of the resin cover 26 and the metal cover 50 and the fixing member 13 is the metal cover 50, the resin cover 26 and the metal cover 50 can be provided without using a special fixing member. The both side portions 12a of the incombustible sheet 12 can be sandwiched and fixed.

  Note that the number of parts can be reduced with one fixing member 13, but when the straight tube lamp 10 is long, it may be preferable in terms of assemblability that the fixing member 13 is divided into a plurality of parts. Not only one fixing member 13 but also a plurality of fixing members 13 may be used.

  In addition, the straight tube lamp 10 of the above embodiment can be used not only for the vehicle lighting device 40 but also for a general lighting device.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

10 Straight tube lamp
12 Non-combustible sheet
13 Fixing member
16 Light emitting module
17 tube
23 LED elements as semiconductor light-emitting elements
26 Resin cover
28 Indentation
40 Lighting equipment
41 Instrument body
50 metal cover

Claims (4)

A light emitting module having a semiconductor light emitting element;
A straight tubular body having a light-transmitting resin cover and containing a light emitting module;
A non-combustible sheet having translucency wound around the outer surface of the resin cover;
A fixing member that sandwiches and fixes both sides of the non-combustible sheet with the resin cover along the longitudinal direction of the tubular body;
A straight tube lamp characterized by comprising: The resin cover is formed in a cylindrical shape, and a recess is formed along the longitudinal direction on the outer surface opposite to the irradiation direction of the light from the light emitting module.
The straight tube lamp according to claim 1, wherein the fixing member is attached to the indented portion by sandwiching both side portions of the incombustible sheet with the indented portion of the resin cover. The pipe body is equipped with a metal cover that is combined with a resin cover to form a straight pipe.
The straight tube lamp according to claim 1, wherein the fixing member is a metal cover, and the both sides of the non-combustible sheet are sandwiched between the fixing member and the resin cover. A straight tube lamp according to any one of claims 1 to 3;
An instrument body in which a straight tube lamp is arranged;
The lighting fixture characterized by comprising.

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