JP2014139946A - Lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting device which uses a luminescent material as a light source, has a simple structure, and reduces the intensity of contrast in a line form of an element or a connected body.SOLUTION: A lighting device 1 includes: a long device body 4; a light emitting module 2; an enclosure 5; and an end plate part 21. Light is radiated from the enclosure 5 and the end plate part 21, and thus the intensity of contrast in a line form of the lighting device body 4 is reduced.

Description

  Embodiments of the present invention relate to a lighting fixture that is attached to a construction such as a ceiling by using emitted light of a light emitter for general lighting.

  For example, LED lighting fixtures that use light-emitting diodes as light sources are being developed and spread as alternatives to conventional fluorescent lighting fixtures because of their low power consumption and the reduced number of maintenance operations such as lamp replacement. It's getting on. In LED lighting fixtures, usually, a light emitting module formed by mounting a plurality of light emitting diodes on a substrate is directly or indirectly attached to a housing (device main body).

  And a long LED lighting fixture is formed by arranging a plurality of light emitting modules of a predetermined length in a straight line. Here, there has been proposed an LED illumination device that eliminates dark portions of illuminance at the joints by connecting the substrates of the light emitting modules in a straight line with almost no gap (see, for example, Patent Document 1). That is, lands are provided above and below the end portion of the pattern surface of the substrate, the end surfaces of the two substrates are brought into contact with each other, and a copper wire having a diameter of 1 mm is placed between adjacent lands. And soldering.

  In addition, there has been proposed a lighting fixture that includes a louver that blocks a part of light emitted from a light emitting diode and that can realize uniform line illumination (see Patent Document 2). In this lighting fixture, a plurality of light source blocks provided with light-emitting diodes are supported by a long fixture body so that the light-emitting diodes are arranged in a straight line along the longitudinal direction of the fixture body.

  The LED lighting apparatus may be attached so as to be connected to or adjacent to the ceiling. For example, an LED lighting device capable of connecting LED lighting units in a line shape has been proposed (see Patent Document 3). This LED lighting device is provided with a male connector at one end of the LED lighting device and a female connector at the other end, and the LED lighting units are arranged in a line by being inserted into the female connector of the LED lighting unit connecting the male connector. Yes.

JP 2010-161046 (page 6, FIG. 5) JP 2010-118187 A (page 5, FIG. 1) JP 2009-99363 A (pages 6-7, FIGS. 5-6)

  By eliminating the gaps between the substrates arranged side by side and setting the pitches of the light emitting diodes to be evenly spaced across the substrates arranged in parallel, the lighting fixture alone is uniform in the longitudinal direction of the fixture body Lighting is possible. However, when a plurality of lighting fixtures are connected in a line shape, the fixture main body is interposed between the lighting fixtures. There is a problem that continuity is impaired.

  Further, as in Patent Document 3, when the instrument body (LED lighting unit) is connected in a line shape with a male connector and a female connector, the connecting portion that does not shine when turned on is easily noticeable, and the continuity of the line illumination is improved. It has the disadvantage of being damaged.

  An object of the present invention is to provide a lighting apparatus that uses a light emitter as a light source, has a simple configuration, and can reduce the brightness in a line form in a single body or a connected body.

  The lighting fixture of the embodiment projects in a bowl shape so as to cover the light emitting module, a light emitting module having a long fixture body, a long substrate, and a light emitter mounted on the substrate. A translucent enclosure provided to accommodate the light emitting module having a bottom surface and open at both ends, and each opening at both ends of the enclosure having a convex portion A translucent end plate portion provided so as to close the opening by being provided so that the convex portion is fitted to,

And a light source unit attached to the instrument body.

  According to the present invention, since the external space is irradiated through the end plate of the enclosure, the emitted light can reduce the brightness of the line-shaped instrument body.

It is a schematic sectional side view of the lighting fixture which shows Example 1 of this invention. Similarly, it is a partially exploded schematic perspective view of connected lighting fixtures. Similarly, it is a schematic sectional side view of a light source unit. Similarly, it is a schematic front sectional view of the light source unit. Similarly, it is a schematic exploded perspective view of a light source unit. Similarly, it is a schematic perspective view of a light shielding member.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The lighting fixture 1 of this embodiment is comprised as shown in FIG. 1 thru | or FIG. In FIG. 1, a lighting fixture 1 includes a light emitting module 2, a light blocking member 3, and a fixture body 4. The light emitting module 2 and the light shielding member 3 are disposed in the enclosure 5 and constitute a light source unit 6. The luminaire 1 is a direct-attached luminaire that is directly attached to a ceiling (not shown) as a construction.

  The light emitting module 2 includes a substrate 7 and a light emitter 8. The substrate 7 is made of, for example, an aluminum (Al) plate having a thickness of 1.2 mm, is formed in a long rectangular shape, and the light emitter 8 is mounted on one surface 7a side through an insulating layer (not shown). ing. As shown in FIG. 4, the substrate 7 is provided with a plurality of light emitters 8 at a constant interval L1 in the longitudinal direction. Here, the distance L2 between the light emitters 8a, 8b provided on the most end side 7c and the other end side 7d of the substrate 7 and the longitudinal end portion (end surface) 7e of the substrate 7 is larger than the constant distance L1. The interval is small, for example, about ½ of the predetermined interval L1. As shown in FIG. 5, lands 10 and 10 for arranging a pair of electrode pins 9 and 9 are provided on the one end side 7 c and the other end side 7 d 7. The electrode pins 9 and 9 disposed on the lands 10 and 10 are electrically connected to a wiring pattern (not shown) formed on the one surface 7a side, and a plurality of light emitters 8 are connected in series and parallel by the wiring pattern. Yes.

  In FIG. 4, the light emitter 8 is formed having an LED chip and a sealing resin 11 (not shown). A plurality of, for example, six LED chips are mounted on the one surface 7a side of the substrate 7 in a direction orthogonal to the longitudinal direction of the substrate 7, that is, in the short width direction. The plurality of LED chips are connected in series by a wiring pattern formed on the substrate 7. The LED chip is formed to emit blue light, for example.

  A plurality of LED chips are sealed with the sealing resin 11. The sealing resin 11 is made of a translucent resin such as a silicone resin, and contains a yellow phosphor (not shown) that converts a part of blue light emitted from the LED chip into yellow light. Thereby, the light emitter 8 emits white light.

  As shown in FIG. 6, the light shielding member 3 is formed in a long and substantially rectangular parallelepiped shape whose plan view outline is substantially the same as that of the light emitting module 2, and a frame disposed so as to face the light emitting module 2. The body 12 has a vertical louver 13 and a horizontal louver 14 provided on the frame 12. The vertical louvers 13 are provided so as to sandwich the light emitters 8 in the longitudinal direction of the substrate 7 when the frame 12 is disposed so as to face the light emitting module 2.

  Of the vertical louvers 13, the light emitters 8 a and 8 b (shown in FIG. 5) provided on the most end side 7 c and the other end side 7 d in the longitudinal direction of the substrate 7 are connected to the longitudinal end portions 7 e and 7 e of the substrate 7. As shown in FIG. 1, the vertical louvers 13 a and 13 a sandwiched from the side are formed so as to have a gap 15 between one surface 7 a and the substrate 7. As a result, the vertical louvers 13a and 13a guide the emitted light of the light emitters 8a and 8b provided on the one end side 7c and the other end side 7d of the substrate 7 in the longitudinal direction opposite to each other on the substrate 7. Act on.

  The other louvers 13 except for the vertical louvers 13a and 13a are formed so as to be close to the one surface 7a of the substrate 7, and shield light emitted from the light emitter 8 toward the adjacent light emitter 8 side. .

  The horizontal louver 14 is formed on the frame 12 between the vertical louvers 13 and 13 in the longitudinal direction of the substrate 7 and between the LED chips. The vertical louver 13 is formed such that the width W1 of the substrate 7 in the longitudinal direction is larger than the width W2 of the lateral louver 14 in the direction perpendicular to the longitudinal direction of the substrate 7 (short width direction). Since the constant interval L1 between the light emitters 8 and 8 is larger than the LED chip mounting interval, the width W1 of the vertical louver 13 is made larger than the width W2 of the horizontal louver 14.

  And the light emitting module 2 and the light-shielding member 3 are accommodated and attached to the enclosure 5 as shown in FIG. The enclosure 5 is made of a translucent resin, such as an acrylic resin, and is formed by extrusion molding. The enclosure 5 has an overall length substantially equal to that of the instrument body 4 described later, and is constituted by a main body portion 16 and a fixing portion 17. The main body 16 is formed in a long cylindrical shape having a flat upper surface 16a and a lower surface 16b protruding downward in a bowl shape. The fixing portion 17 is formed in a cylindrical shape having a substantially rectangular cross section having a top plate 18 protruding upward from the upper surface 16 a of the main body portion 16, and the inside thereof communicates with the internal space of the main body portion 16.

  Then, on the inner surface of the fixed portion 17, mounting portions 19, 19 projecting inward and facing each other are formed over the longitudinal direction of the enclosure 5. Then, both end portions 7 f and 7 f in the short width direction of the substrate 7 of the light emitting module 7 and the ear portion 12 a of the frame 12 of the light shielding member 3 are inserted between the top plate portion 18 and the mounting portions 19 and 19.

  The light emitting module 2 and the light shielding member 3 are inserted between the top plate portion 18 and the mounting portions 19 and 19 through the opening 20 on one end side 5a or the other end side 5b of the enclosure 5. Here, a plurality of, for example, four light emitting modules 2 and light shielding members 3 are inserted. The light emitting module 2 is inserted such that the end 7e on one end side 7c of the substrate 7 contacts the end 7e on the other end side 7d of the adjacent substrate 7. The same applies to the light shielding member 3.

  Notches (not shown) through which the electrode pins 9 and 9 of the light emitting module 2 are inserted are provided on both ends in the longitudinal direction of the top plate portion 18 of the enclosure 5. The light emitting module 2 having the electrode pins 9 and 9 is attached to the enclosure 5 so that the electrode pins 9 and 9 are inserted into the notches.

  As shown in FIG. 5, the enclosure 5 is provided with end plates 21 and 21 as end plate portions for closing the openings 20 on the one end side 5 a and the other end side 5 b. The end plates 21 and 21 are formed of a light-transmitting resin, such as acrylic resin, in the shape and size of the end surface of the enclosure 5 so as to close the opening 20 and are not shown in the drawing. Has a convex part.

  Thus, the enclosure 5 has the light emitting module 2 and the light shielding member 3 disposed therein, and the end plates 21 and 21 are provided at both ends 5a and 5b thereof. The light emitting module 2, the light blocking member 3, and the enclosure 5 constitute a light source unit 6. A part of the radiated light emitted from the light emitters 8a and 8b provided on both end sides 7c and 7d of the substrate 7 is derived from the gap 15 between the vertical louvers 13a and 13a of the light shielding member 3 and the substrate 7, Irradiating outward through the translucent end plates 21 and 21. The light source unit 6 is attached to the instrument body 4.

  The instrument body 4 is formed of, for example, a steel plate having a thickness of 0.8 mm. As shown in FIG. 1, the instrument body 4 is long and has a substantially U-shaped cross section having flanges 4 a and 4 a that project inward so as to face each other. And the fixing | fixed part 17 of the enclosure 5 is inserted, and the said fixing | fixed part 17 is being fixed by attachment means (not shown), such as a spring material. That is, the instrument body 4 has the light emitting module 2 and the light shielding member 3 disposed along the longitudinal direction. The instrument body 4 is provided with a plurality of light emitting modules 2 and light shielding members 3 arranged in the longitudinal direction.

  As shown in FIG. 2, the instrument body 4 is provided with sockets 22 and 22 inside the longitudinal ends 4a and 4b, and a power supply unit 23 inside the intermediate side 4c. Yes. When the light source unit 6 is attached to the instrument body 4, the electrode pins 9 and 9 protruding from the enclosure 5 are inserted into the sockets 22 and 22, respectively. The power supply unit 23 is electrically connected to the commercial AC power supply and the sockets 22 and 22, and is formed to supply a predetermined current to the LED chip of the light emitter 8.

  And the end plates 24 and 24 are attached to the end surface of the both ends 4a and 4b of the longitudinal direction of the instrument main body 4 by welding, for example. The instrument body 4 has a light-transmitting end plate portion at both end portions 4a and 4b in the longitudinal direction by attaching the enclosure 5 to which the light-transmitting end plates 21 and 21 are mounted. Yes. Here, the end plates 24, 24 may be configured integrally with the end plates 21, 21 of the enclosure 5 with a translucent resin such as acrylic resin. And when the light source unit 6 is attached to the instrument main body 4, the said end surface of the instrument main body 4 may be obstruct | occluded.

  And the lighting fixture 1 is connected with the connection body 26, and the plurality is connected (parallelly provided) in a line shape on the ceiling surface, for example.

  Next, the operation of the first embodiment of the present invention will be described.

  When the power supply unit 23 is turned on, a predetermined current flows through the LED chip of the light emitter 8, the LED chip emits light, and white light is emitted from the light emitter 8. The emitted light is emitted from the enclosure 5 in the direction of the irradiation surface, for example, the floor surface, with the irradiation angle being limited by the vertical louver 13 and the horizontal louver 14 of the light blocking member 3. By limiting the irradiation angle of the radiated light, glare when looking up at the luminaire 1 is prevented. And since the width W1 of the vertical louver 13 is larger than the width of the horizontal louver W2, the glare when the lighting fixture 1 is looked up from the longitudinal direction side is prevented more.

  Since the gap 15 is provided between the vertical louvers 13a, 13a on both ends in the longitudinal direction of the light shielding member 3 and the substrate 7 of the light emitting module 2, a part of the emitted light of the light emitter 8 is led out from the gap 15. Then, the substrate 7 is irradiated to the outside through the enclosure 5 from one end side 7 a and the other end side 7 b in the longitudinal direction. Thereby, even if a plurality of light emitting modules 2 are provided side by side in the longitudinal direction of the instrument body 4, a decrease in illuminance at the connection portion of the light emitting modules 2, 2 is suppressed, and the emitted light is in the longitudinal direction of the instrument body 4. The light is emitted so as to reduce.

  Further, part of the emitted light of the light emitter 8 led out from the gap 15 is irradiated to the external space through the end plates 21 and 21 of the enclosure 5. Thereby, even if it connects the some lighting fixture 1 linearly, the fall of the illumination intensity in the connection part of the lighting fixtures 1 and 1 is suppressed, and radiated light seems to reduce the brightness of the line-shaped fixture main body 4. FIG. Is emitted.

  As described above, according to the present embodiment, the radiated light emitted from the light emitters 8 a and 8 b provided on both ends in the longitudinal direction of the light emitting module 2 is transmitted between the vertical louvers 13 a and 13 a and the substrate 7. Since the light emitting module 2 is led out from the gap 15 in the longitudinal direction, both end portions in the longitudinal direction of the light emitting module 2 are illuminated. Even if a plurality of light emitting modules 2 are connected in the longitudinal direction of the instrument main body 4, The effect that uniform illumination light can be obtained in the longitudinal direction of 4 and uniform line illumination can be obtained over the plurality of illumination fixtures 1 even when the plurality of illumination fixtures 1 are arranged in a line. Have

  And the light emitting module 2 and the light-shielding member 3 are arrange | positioned in the translucent enclosure 5, and the simple structure which attaches the translucent end plates 21 and 21 to the both ends 5a and 5b of the longitudinal direction of the enclosure 5 By this, since the above-mentioned operation and effect can be obtained, it has the effect that the lighting fixture 1 can be formed at low cost.

  And since the width W1 of the vertical louver 13 of the light shielding member 3 is formed larger than the width W2 of the horizontal louver 14, there is an effect that glare when looking up at the luminaire 1 in a line shape can be largely prevented.

  The width W1 of the vertical louver 13 may be smaller than the width W2 of the horizontal louver 14, and a plurality of vertical louvers 14 may be provided between the light emitters 8 and 8.

DESCRIPTION OF SYMBOLS 1 ... Lighting fixture, 2 ... Light-emitting module, 3 ... Light-shielding member, 4 ... Appliance main body, 5 ... Enclosure, 7 ... Substrate, 8 ... Light-emitting body, 12 ... Frame, 13 ... Vertical louver, 14 ... Horizontal louver, 15 ... Gap, 21, 21 ... End plate as end plate

Claims (1)

An elongated instrument body;
A light emitting module having a long substrate and a light emitter mounted on the substrate;
A translucent enclosure provided to accommodate the light emitting module, which is a long cylindrical shape having a bottom surface protruding in a bowl shape so as to cover the light emitting module, and having both ends opened;
A translucent end plate portion that has a convex portion and is provided so as to close the opening by being provided so that the convex portion is fitted to each opening on both ends of the enclosure;
A light source unit attached to the instrument body;
The lighting fixture characterized by comprising.

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