JP2017195036A - Light source unit and lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the uniformity ratio of luminance of a cover which appears in appearance.SOLUTION: A cover 12 of a light source unit 1 includes: a first translucent part 16 arranged so as to cover an LED module 10 from the front side; and a second translucent part 17 arranged so as to oppose to the LED module 10 by sandwiching the first translucent part 16. The first translucent part 16 is constituted in such a manner that around a first region 160 which is relatively close to the LED module 10, a second region 161 is arranged which is farther away from the LED module 10 than the first region 160. In the first region 160 of the first translucent part 16, the ratio of diffusing the light emitted from the LED module 10 becomes higher compared with that in the second region 161 of the first translucent part 16.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a light source unit and a lighting fixture, and more particularly to a light source unit including a cover that diffuses light of a light source, and a lighting fixture including the light source unit.

  As a conventional example, a lighting apparatus described in Patent Document 1 is illustrated. The lighting fixture described in Patent Literature 1 includes a fixture main body and a main body cover. The instrument body has an attachment portion for attachment to a ceiling or the like, and is formed in a long shape. In addition, the instrument body has a plurality of light emitting elements (light emitting diodes) arranged along the longitudinal direction. The main body cover has translucency and is attached to the instrument main body so as to cover the plurality of light emitting elements. The lighting fixture described in Patent Document 1 is configured such that the fixture main body is attached to a ceiling, a wall, or the like by a mounting portion, and the light emitted from the light emitting element is irradiated through the transparent main body cover. ing.

Utility Model Registration No. 3186404

  By the way, in the lighting fixture of patent document 1, the both ends of the direction orthogonal to the longitudinal direction of the cover (main body cover) which appear in the external appearance of a lighting fixture become comparatively dark, the brightness | luminance uniformity tends to fall, and further improvement Is desired.

  An object of the present invention is to provide a light source unit and a luminaire that can improve the uniformity of the brightness of the cover that appears in the appearance.

  A light source unit according to an aspect of the present invention is configured to transmit a light source, a mounting member that supports the light source and is attached to a fixture body of a lighting fixture, surrounds the light source, and transmits light emitted from the light source. And a covered cover. The cover includes a first light transmissive portion disposed to cover the light source from the front, a second light transmissive portion disposed to face the light source with the first light transmissive portion interposed therebetween, and the first It has the connection part which connects 1 translucent part and the said 2nd translucent part. The first light transmitting portion is configured to arrange a second region having a distance farther than the first region around a first region that is relatively close to the light source. The first region of the first light transmissive portion is configured to have a higher ratio of diffusing light emitted from the light source than the second region of the first light transmissive portion.

  The lighting fixture which concerns on 1 aspect of this invention is equipped with the said light source unit and the fixture main body which supports the said light source unit.

  The light source unit and the lighting fixture of the present invention have an effect that it is possible to improve the uniformity of the brightness of the cover that appears in the appearance.

FIG. 1 is a perspective view of a light source unit and a lighting fixture according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of the light source unit and the lighting fixture. FIG. 3 is a front view showing a state where the light source unit of the lighting fixture is removed. FIG. 4 is a side view showing the same light source unit, with the cover end omitted. FIG. 5 is a side view of Modification 1 of the cover body in the light source unit. FIG. 6 is a side view of Modification Example 2 of the cover body in the light source unit same as above. FIG. 7 is a side view of Modification 3 of the cover body in the light source unit. FIG. 8 is a side view of Modification 4 of the cover body in the light source unit. FIG. 9 is a side view of Modification 5 of the cover body in the light source unit. FIG. 10 is a side view of Modification 6 of the cover main body in the light source unit. FIG. 11 is a perspective view of a light source unit and a lighting fixture according to Embodiment 2 of the present invention.

  A light source unit and a lighting fixture according to an embodiment of the present invention will be described in detail with reference to the drawings. The lighting fixture of Embodiment 1 and Embodiment 2 demonstrated below is a lighting fixture (what is called a stairway guide light) installed in the wall surface of the landing of the staircase used as the escape route of a building, for example. The configurations described in the following embodiments are merely examples of the present invention. The present invention is not limited to the following embodiments, and various modifications can be made according to the design and the like as long as they do not depart from the technical idea of the present invention.

  A lighting fixture (hereinafter abbreviated as a lighting fixture) 9A according to Embodiment 1 of the present invention includes a light source unit 1 according to an embodiment of the present invention and a fixture body 3 as shown in FIGS. Yes. The lighting fixture 9 </ b> A preferably includes two emergency light source units 2, an emergency power supply unit 4, a battery unit 6, a control unit 5, and a human detection unit 7. In the following description, unless otherwise specified, the vertical direction, the horizontal direction, and the longitudinal direction of the light source unit 1 and the lighting fixture 9A are defined in the direction shown in FIG. That is, in a state where the lighting fixture 9A is installed on the wall surface of the stair landing, the vertical direction is the vertical direction, the normal direction of the wall surface is the front-rear direction, and the left-right direction when viewed from the front is the left-right direction.

  The instrument main body 3 includes a back plate 30 formed in a long rectangular flat plate shape, and an upper plate 31 and a lower plate 32 that are long rectangular flat plate shapes (see FIG. 2). The upper plate 31 is formed so as to protrude forward along the normal direction of the back plate 30 from a portion excluding both ends in the longitudinal direction at the upper end of the back plate 30. Similarly, the lower plate 32 is formed so as to protrude forward along the normal direction of the back plate 30 from a portion excluding both ends in the longitudinal direction at the lower end of the back plate 30. However, the back plate 30, the upper plate 31, and the lower plate 32 are preferably formed integrally by bending a metal plate (see FIG. 2).

  The back plate 30 has a plurality of (four in the illustrated example) long holes 300. These long holes 300 are provided at intervals along the longitudinal direction of the back plate 30 (see FIG. 3). Each of the long holes 300 is inserted with an anchor bolt embedded in a landing wall (concrete wall). And the tool main body 3 is fixed to a concrete wall by tightening a nut to these anchor bolts. Further, a plurality (two in the illustrated example) of round holes 301 are provided so as to be aligned in the longitudinal direction at substantially the center in the longitudinal direction of the back plate 30 (see FIG. 3). These round holes 301 are inserted with power supply lines for power supply from a normal power supply (commercial power supply), and a plurality of (three in the illustrated example) are provided in the vicinity of the round holes 301 on the front surface of the back plate 30. A terminal block 33 is attached. These terminal blocks 33 are electrically connected to a power supply line drawn from the round hole 301, a signal line for receiving a fire signal from an automatic fire alarm facility installed in a building, and the like.

  The battery unit 6 has a plurality of secondary batteries such as nickel metal hydride batteries, and the plurality of secondary batteries are housed in a case of a synthetic resin molded body. In addition, it is preferable that the battery unit 6 is attached to the site | part of the left end in the front surface of the backplate 30 (refer FIG. 3).

  The emergency power supply unit 4 converts the AC power supplied from the normal power supply into DC power to charge the battery unit 6 and supplies the emergency light source unit 2 from the battery unit 6 when the normal power supply fails. And a lighting circuit for adjusting the direct current. Further, the emergency power supply unit 4 forcibly stops the charging circuit when a check switch described later is pressed, and the emergency light source unit 2 is connected to the lighting circuit with DC power supplied from the battery unit 6. Configured to light up. The emergency power supply unit 4 is preferably attached to the right end portion of the front surface of the back plate 30, as shown in FIG.

  As shown in FIGS. 1 and 3, the inspection switch is preferably housed in a synthetic resin box 40 and attached near the left end of the lower plate 32. The box 40 contains a light receiving element for receiving a wireless signal using infrared as a medium in addition to an inspection switch including a push button switch. A plurality of holes 400 are provided on the lower surface of the box 40 (see FIG. 1). The push button of the inspection switch can be pushed through these holes 400, and a wireless signal can be received by the light receiving element. Even when the emergency power supply unit 4 receives a wireless signal from the light receiving element, the emergency power supply unit 4 forcibly stops the charging circuit and supplies power from the battery unit 6 in the same manner as when the inspection switch is pressed. The emergency light source unit 2 is turned on in the lighting circuit with electric power.

  The human detection unit 7 includes a radio wave sensor 70 and a sensor mounting base 71. The radio wave sensor 70 is configured to detect a person (moving body) using millimeter wave band radio waves as a medium, and to output a human detection signal to the control unit 5 when the person is detected. The sensor mounting base 71 holds the radio wave sensor 70 and is attached to the center in the longitudinal direction of the lower plate 32 of the instrument body 3 (see FIGS. 1 to 3).

  The control unit 5 operates with power supplied from a normal power source, and is configured to control the light source unit 1 in accordance with a human detection signal output from the human detection unit 7 (the radio wave sensor 70). The control unit 5 outputs a control signal for instructing the light source unit 1 to perform rated lighting when a human detection signal is output from the human detection unit 7. In addition, the control unit 5 is turned off with a light amount that is less than that at the time of turning on or turning off the light source unit 1 when a predetermined standby time (for example, several tens of seconds to several minutes) has passed after the human detection signal is not output. A control signal for instructing to do so is output. However, the control unit 5 stops all operations when the utility power supply fails.

  As shown in FIGS. 2 and 4, the light source unit 1 includes an LED module 10, an attachment member 11 to which the LED module 10 is attached, and a cover 12 that is attached to the attachment member 11 so as to cover the LED module 10. . The light source unit 1 preferably includes a power supply unit 13 that supplies DC power to the LED module 10.

  The LED module 10 includes a mounting substrate 100 formed in a long rectangular plate shape. The mounting substrate 100 is mounted on the front surface thereof so that a plurality of LEDs (light emitting diodes) 101 are arranged in a line along the left-right direction (longitudinal direction) (see FIG. 2). The mounting substrate 100 has a connector mounted on the left end, for example. This connector is configured to electrically connect a conductor formed on the mounting substrate 100 and an output line of the power supply unit 13.

  The attachment member 11 is formed in a U shape by sheet metal. The attachment member 11 includes a bottom plate 110 that is formed in a long and rectangular plate shape, and a pair of side plates 111 that protrude rearward from the upper and lower ends of the bottom plate 110 (see FIGS. 2 and 4). At the rear ends of the pair of side plates 111, as shown in FIG. 4, hooking portions 112 that are curved away from each other (outward) are provided over the entire length. In addition, the LED module 10 mentioned above is fixed to the attachment member 11 by the nail | claw 115 formed by cutting and raising a part of the bottom plate 110 of the attachment member 11, for example (refer FIG. 4).

  In addition, the attachment member 11 is disposed on a pair of hook metal fittings 113 having a hook-shaped tip protruding rearward from the upper hook portion 112 and a lower side plate 111 at positions near both ends in the longitudinal direction. And a pair of hook springs 114 (see FIGS. 2 and 4). Each of the pair of hook springs 114 is constituted by a torsion coil spring (see FIG. 4).

  The power supply unit 13 is configured to convert AC power supplied from a normal power source into DC power, and supply the DC power to the LED module 10 so as to be lit. Further, the power supply unit 13 is configured to increase or decrease the DC power supplied to the LED module 10 in accordance with a control signal output from the control unit 5. That is, the power supply unit 13 supplies rated DC power (DC current) to the LED module 10 when receiving a control signal for instructing the rated lighting from the control unit 5. In addition, when the power supply unit 13 receives a control signal for instructing to turn off the light from the control unit 5 or turn on with less light than when the rated light is turned on, the power supply unit 13 stops the supply of DC power to the LED module 10, or Supply less DC power than rated. The power supply unit 13 is attached to the side plate 111 on the rear surface side of the attachment member 11 using, for example, screws (see FIG. 4).

  The cover 12 has a cover body 14 and a pair of cover ends 15 as shown in FIG. The cover main body 14 is formed in a rectangular tube shape whose both ends in the longitudinal direction (left-right direction) are open by a light-transmitting synthetic resin (for example, acrylic resin or polycarbonate resin) (see FIG. 4). Each of the pair of cover ends 15 is formed in a rectangular plate shape using the same material as that forming the cover main body 14. One cover end 15 is attached to the left end of the cover body 14 and closes the left end surface of the cover body 14. The other cover end 15 is attached to the right end of the cover body 14 and closes the right end surface of the cover body 14 (see FIG. 2).

  Here, the semi-cylindrical portion provided on the rear wall of the cover main body 14 is referred to as a first light transmitting portion 16. Further, the front wall of the cover body 14 is referred to as a second light transmitting portion 17 (see FIG. 4). Furthermore, the L-shaped part which connects the upper end of the 1st translucent part 16 and the upper end of the 2nd translucent part 17, and the lower end of the 1st translucent part 16 and the lower end of the 2nd translucent part 17 are connected. Each of the L-shaped portions is called a connecting portion 18. Note that the cover main body 14 has a pair of protruding wall portions 120. The pair of protruding wall portions 120 are provided over the entire length of the cover body 14 in the longitudinal direction (left-right direction) so as to protrude rearward from the rear surfaces of the upper connecting portion 18 and the lower connecting portion 18. Yes. In addition, at the rear ends of the pair of projecting wall portions 120, there are provided projecting portions 121 that project inwardly (downward in the upper projecting wall portion 120 and upward in the lower projecting wall portion 120) (see FIG. (See FIG. 4). The cover 12 covers the front surface of the mounting member 11 by the projections 121 of the pair of protruding wall portions 120 being hooked on the hooking portions 112 of the corresponding side plates 111 of the pair of side plates 111 of the mounting member 11. It is attached to the attachment member 11.

  The first light transmissive part 16, the second light transmissive part 17, the connecting part 18, the pair of protruding wall parts 120, and the pair of protrusion parts 121 are made of a transparent synthetic resin (for example, an acrylic resin or a polycarbonate resin). It is integrally formed. However, for example, a light diffusing agent made of fine particles of acrylic resin or silicone resin is mixed in at least the rectangular tube-shaped portion (the first light transmitting portion 16, the second light transmitting portion 17, and the connecting portion 18). Yes. And the light transmittance (diffusibility) of the 1st translucent part 16 and the 2nd translucent part 17 can be adjusted according to the mixing amount of a light-diffusion agent. The light transmittance and the diffusivity (light diffusibility) are inversely proportional to each other, and the diffusibility decreases as the light transmittance increases, and the diffusivity increases as the light transmittance decreases. The second light transmissive part 17 is preferably mixed with a light diffusing agent having a light transmittance of 60% to 70%, for example. On the other hand, it is preferable that the 1st translucent part 16 is comprised so that light transmittance (diffusibility) may be changed with a place (site | part). That is, the first light transmitting portion 16 is divided into a first region 160 that is relatively close to the LED module 10 (the LED 101) and a second region 161 that is above and below the first region 160. Yes. However, the first region 160 is from a portion 162 where a straight line α connecting the connection portion 180 of the second light transmitting portion 17 and the connecting portion 18 and the LED 101 (the center of the light emitting surface thereof) intersects the first light transmitting portion 16. Is preferably a region close to the LED 101 (see FIG. 4). The first region 160 is preferably mixed with a light diffusing agent having a light transmittance of 50 [%] to 60 [%] (preferably 55 [%] to 56 [%]). The second region 161 is preferably mixed with a light diffusing agent having a light transmittance of 70 [%] to 80 [%]. In addition, the thickness of the 1st area | region 160 of the 1st translucent part 16 and the thickness of the 2nd area | region 161 of the 1st translucent part 16 may differ. However, as described above, the cover main body 14 may have different amounts of the light diffusing agent for each part (the first region 160 and the second region 161 of the first light transmitting part 16 and the second light transmitting part 17). , And can be integrally molded by multicolor molding (for example, multicolor extrusion molding).

  The light source unit 1 is temporarily held by the instrument main body 3 by hooking the respective tip portions of the pair of hook metal fittings 113 to the receiving metal fitting 310 provided on the upper plate 31 of the instrument main body 3. The light source unit 1 is configured such that the arm portions of the pair of hook springs 114 are hooked on the edge of the groove 3200 (see FIG. 3) of the hook plate 320 provided on the lower plate 32 of the tool body 3. (See FIG. 1).

  Each of the two emergency light source units 2 includes an emergency LED module 20, a mounting base 21, a unit cover 22, and the like (see FIG. 2). The emergency LED module 20 includes an LED that is a light source for emergency illumination, a lens 201 that controls light distribution of light emitted from the LED, and the like. The mounting base 21 has a pair of side walls 210 and a connecting piece that connects the pair of side walls 210 to each other. Each of the pair of side walls 210 is formed in a rectangular plate shape. The emergency LED module 20 is attached to the front surface of the connecting piece. Each of the two unit covers 22 is configured to cover the front surface, the upper surface, and the lower surface of the connecting piece of the corresponding mounting table 21 of the two mounting tables 21. However, the lens 201 of the emergency LED module 20 is inserted through a window hole 2230 provided in the unit cover 22 (see FIG. 2).

  One of the two emergency light source units 2 is attached to one end (left end) of the instrument body 3 in the longitudinal direction. The other emergency light source unit 2 of the two emergency light source units 2 is attached to the other end (right end) of the instrument body 3 in the longitudinal direction. That is, two emergency light source units 2 are arranged one by one at both ends in the longitudinal direction of the long instrument body 3 (see FIG. 1).

  When the light source unit 1 is turned on, the light emitted from the LED module 10 (the LED 101) passes through the cover 12 and is irradiated forward. At this time, the distance between the center portion in the short direction (vertical direction) of the second light transmitting portion 17 of the cover body 14 and the LED 101 is relatively shorter than both ends of the second light transmitting portion 17 in the short direction. The brightness tends to be higher than both ends of the second light transmitting portion 17 in the short direction.

  In contrast, in the light source unit 1 of the present embodiment, the light transmittance of the first region 160 in the first light transmitting portion 16 of the cover body 14 is made lower than that of the second region 161 in the first light transmitting portion 16. Yes. In other words, the light source unit 1 of the present embodiment has a ratio (diffusibility) in which light (light emitted from the LED module 10) is diffused in the first region 160 in the first light transmitting portion 16 of the cover body 14. The ratio (diffusibility) in which light is diffused in the second region 161 in the first light transmitting portion 16 is set higher. As a result, the light source unit 1 reduces the light that passes through the central portion of the second light transmissive portion 17 without being diffused in the first region 160 of the first light transmissive portion 16, and the cover 12 (second of the cover 12 that appears in the appearance). It is possible to improve the uniformity of the luminance of the light transmitting part 17). However, if the first region 160 of the first light transmitting part 16 is too wide, the amount of light passing through the second light transmitting part 17 may be excessively reduced. Therefore, the first region 160 is preferably a region that is closer to the LED 101 than the portion 162 where the straight line α indicated by the two-dot chain line in FIG. 4 intersects the first light transmitting portion 16. If the first region 160 is in a region narrower than the range sandwiched between the two straight lines α, the amount of light passing through the second light transmitting portion 17 can be improved while improving the luminance uniformity of the cover 12 that appears on the appearance. Reduction can be suppressed.

  Here, the first light transmitting portion 16 of the cover main body 14 may be configured to make the thickness of the first region 160 larger than the thickness of the second region 161 as in the first modification shown in FIG. . In other words, the light transmittance of the first light transmitting portion 16 decreases (the diffusion ratio increases) as the thickness increases. As a result, the light source unit 1 in which the cover main body 14 shown in FIG. 5 is used can also improve the brightness uniformity of the cover 12 that appears on the appearance. In addition, the 1st translucent part 16 may be comprised so that thickness may increase gradually (continuously) toward the center of a transversal direction from the both ends (upper end and lower end) of a transversal direction (refer FIG. 5). ).

  Modification 2 of the cover body 14 is shown in FIG. The cover main body 14 of Modification 2 has a plurality of prisms 163 on the emission surface 1601 of the first light transmitting part 16. Each of the plurality of prisms 163 is preferably formed in a triangular prism shape and arranged in the circumferential direction (vertical direction) on the emission surface 1601 of the first light transmitting portion 16. Each of the plurality of prisms 163 is connected to the emission surface 1601 on one of the three side surfaces, and the side surface 1630 closer to the LED 101 among the other two side surfaces is connected to the LED 101. Is preferably formed so as to have a larger area than the far side surface 1631. If each prism 163 is configured as described above, the light emitted from the side surface 1630 having the larger area can be refracted in a direction away from the center in the lateral direction (vertical direction) of the second light transmitting portion 17. it can. As a result, the light source unit 1 can reduce the light passing through the central portion of the second light transmissive portion 17 and improve the luminance uniformity of the cover 12 (the second light transmissive portion 17) that appears on the appearance. it can.

  A modification 3 of the cover main body 14 is shown in FIG. The cover main body 14 of Modification 3 has a plurality of prisms 163 on the emission surface 1601 in the second region 161 of the first light transmitting part 16. Thus, even when the light source unit 1 has the plurality of prisms 163 only on the emission surface 1601 of the second region 161 of the first light transmitting part 16, the cover 12 (second of the cover 12 that appears on the exterior) It is possible to improve the uniformity of the luminance of the light transmitting part 17).

  Modification 4 of the cover body 14 is shown in FIG. The cover main body 14 of Modification 4 has a plurality of prisms 164 on the incident surface 1600 of the first light transmitting portion 16. Each of the plurality of prisms 164 is preferably formed in a triangular prism shape and arranged in the circumferential direction (vertical direction) on the incident surface 1600 of the first light transmitting portion 16. Each of the plurality of prisms 164 is connected to the incident surface 1600 on one of the three side surfaces, and the side surface 1640 that is closer to the LED 101 among the other two side surfaces is connected to the LED 101. Is preferably formed to have a larger area than the far side surface 1641. If each prism 164 is configured as described above, the light incident on the side surface 1640 having the larger area can be refracted in a direction away from the center in the short side direction (vertical direction) of the second light transmitting portion 17. it can. As a result, the light source unit 1 can reduce the light passing through the central portion of the second light transmissive portion 17 and improve the luminance uniformity of the cover 12 (the second light transmissive portion 17) that appears on the appearance. it can.

  A modification 5 of the cover body 14 is shown in FIG. The cover main body 14 of Modification 5 has a plurality of prisms 164 on the incident surface 1600 in the second region 161 of the first light transmitting portion 16. Thus, even when the light source unit 1 has the plurality of prisms 164 only on the incident surface 1600 of the second region 161 of the first light transmitting portion 16, the cover 12 (second of the cover 12 that appears on the exterior) It is possible to improve the uniformity of the luminance of the light transmitting part 17).

  Modification 6 of the cover main body 14 is shown in FIG. The cover main body 14 of Modification 6 has a protrusion 165 in the second region 161 of the first light transmitting portion 16. The protrusion 165 is preferably formed in a V shape when viewed from the left-right direction. Note that the protrusion 165 is preferably disposed at the center in the vertical direction of the first region 160 of the first light transmitting portion 16. The cover body 14 of Modification 6 can refract the light passing through the protrusion 165 in a direction away from the protrusion 165 along the short direction (vertical direction) of the second light transmitting portion 17. As a result, the light source unit 1 can reduce the light passing through the central portion of the second light transmissive portion 17 and improve the luminance uniformity of the cover 12 (the second light transmissive portion 17) that appears on the appearance. it can.

  Next, the lighting fixture 9B which concerns on Embodiment 2 of this invention is shown in FIG. However, the light source unit 1 is the same as the light source unit 1 of the first embodiment. The instrument main body 3 in the second embodiment is formed so as to be thinner in the front-rear direction and wider in the vertical direction (higher in height) than the instrument main body 3 in the first embodiment. Similarly, the two emergency light source units 2 in the second embodiment are formed so that the mounting base 21 and the unit cover 22 are thinner and wider than the two emergency light source units 2 in the first embodiment. Has been.

  As described above, the light source unit 1 of the first and second embodiments includes the light source (LED module 10) and the attachment member 11 that supports the LED module 10 and is attached to the fixture body 3 of the lighting fixtures 9A and 9B. The light source unit 1 also includes a cover 12 that surrounds the LED module 10 and is configured to transmit light emitted from the LED module 10. The cover 12 has a first light transmitting portion 16 disposed so as to cover the LED module 10 from the front, and a second light transmitting portion 17 disposed so as to face the LED module 10 with the first light transmitting portion 16 interposed therebetween. And a connecting portion 18 that connects the first light transmitting portion 16 and the second light transmitting portion 17. The first light transmissive part 16 is arranged such that the second region 161 whose distance from the LED module 10 is farther than the first region 160 is disposed around the first region 160 that is relatively close to the LED module 10. It is configured. The first region 160 of the first light transmitting part 16 is configured to have a higher ratio of diffusing the light emitted from the LED module 10 than the second region 161 of the first light transmitting part 16. .

  The lighting fixtures 9A and 9B according to the first and second embodiments include the light source unit 1 and the fixture main body 3 that supports the light source unit 1.

  If the light source unit 1 is configured as described above, it is possible to reduce the light that passes through the central portion of the second light transmitting portion 17 without being diffused in the first region 160 of the first light transmitting portion 16. As a result, the light source unit 1 can improve the luminance uniformity of the cover 12 (the second light transmitting portion 17) that appears in the appearance. The lighting fixtures 9 </ b> A and 9 </ b> B can improve the luminance uniformity of the cover 12 (second translucent portion 17) that appears in the appearance, similarly to the light source unit 1.

  In the light source unit 1, the first region 160 of the first light transmitting unit 16 is configured to have a higher diffusibility of light emitted from the LED module 10 than the second region 161 of the first light transmitting unit 16. It is preferable.

  If the light source unit 1 is configured as described above, the light passing through the central portion of the second light transmitting portion 17 is reduced, and the brightness uniformity of the cover 12 (the second light transmitting portion 17) appearing in the appearance is reduced. Improvements can be made.

  In the light source unit 1, the first light transmitting part 16 is preferably formed in a curved shape that protrudes away from the LED module 10.

  If the light source unit 1 is configured as described above, the difference between the distance from the LED module 10 to the first region 160 and the distance from the LED module 10 to the second region 161 can be reduced. As a result, the light source unit 1 expands the range through which the light diffused in the second region 161 passes in the second light transmissive part 17, thereby increasing the brightness of the cover 12 (second light transmissive part 17) that appears in the appearance. It is possible to improve the degree of uniformity.

  In the light source unit 1, the first region 160 of the first light transmitting part 16 is preferably configured to be thicker than the second region 161 of the first light transmitting part 16.

  If the light source unit 1 is configured as described above, the light passing through the central portion of the second light transmitting portion 17 is reduced, and the brightness uniformity of the cover 12 (the second light transmitting portion 17) appearing in the appearance is reduced. Improvements can be made.

  In the light source unit 1, the first light transmitting part 16 preferably has an incident surface 1600 that faces the LED module 10 and on which light emitted from the LED module 10 is incident. Moreover, it is preferable that the 1st translucent part 16 has the output surface 1601 which opposes the LED module 10 on both sides of the incident surface 1600, and the light which injected from the incident surface 1600 radiate | emits. A plurality of prisms 163 are preferably provided on the exit surface 1601 of the first region 160 of the first light transmitting portion 16. Each of the plurality of prisms 163 is preferably formed in a triangular prism shape. Furthermore, each of the plurality of prisms 163 is preferably formed so as to be connected to the emission surface 1601 on one of the three side surfaces. Each of the plurality of prisms 163 is preferably configured such that the area of one side surface 1630 of the two side surfaces 1630 and 1631 excluding one side surface is larger than the area of the other side surface 1631. In addition, it is preferable that one side surface 1630 is closer to the LED module 10 than the other side surface 1631.

  If the light source unit 1 is configured as described above, the plurality of prisms 163 reduce the light passing through the central portion of the second light transmitting portion 17 and the cover 12 (the second light transmitting portion 17) appearing in the appearance. It is possible to improve the uniformity of the luminance.

  In the light source unit 1, the first light transmitting part 16 preferably has an incident surface 1600 that faces the LED module 10 and on which light emitted from the LED module 10 is incident. Moreover, it is preferable that the 1st translucent part 16 has the output surface 1601 which opposes the LED module 10 on both sides of the incident surface 1600, and the light which injected from the incident surface 1600 radiate | emits. It is preferable that a plurality of prisms 163 be provided on the incident surface 1600 of the first region 160 of the first light transmitting portion 16. Each of the plurality of prisms 163 is preferably formed in a triangular prism shape. Further, each of the plurality of prisms 163 is preferably formed so as to be connected to the incident surface 1600 on one of the three side surfaces. Each of the plurality of prisms 163 is preferably configured such that the area of one side surface 1630 of the two side surfaces 1630 and 1631 excluding one side surface is larger than the area of the other side surface 1631. In addition, it is preferable that one side surface 1630 is closer to the LED module 10 than the other side surface 1631.

  If the light source unit 1 is configured as described above, the plurality of prisms 163 reduce the light passing through the central portion of the second light transmitting portion 17 and the cover 12 (the second light transmitting portion 17) appearing in the appearance. It is possible to improve the uniformity of the luminance.

  In the light source unit 1, the first region 160 of the first light transmissive portion 16 is such that a straight line α connecting the connection portion between the second light transmissive portion 17 and the connection portion 18 and the LED module 10 intersects the first light transmissive portion 16. It is preferable that it is an area | region where the distance with LED module 10 is near rather than the location to do.

  If the light source unit 1 is configured as described above, it is possible to suppress a decrease in the amount of light passing through the second light transmitting portion 17 while improving the luminance uniformity of the cover 12 that appears in the appearance.

  In the light source unit 1, the second light transmitting portion 17 is preferably formed in a flat plate shape in which the width of the surface facing the LED module 10 is larger than the distance from the LED module 10.

  If the light source unit 1 is configured as described above, the surface of the cover 12 that appears in the appearance can be made flat to make it appear small.

9A, 9B Lighting fixture 1 Light source unit 3 Appliance body 10 LED module (light source)
DESCRIPTION OF SYMBOLS 11 Attachment member 12 Cover 16 1st light transmission part 17 2nd light transmission part 18 Connection part 160 1st area | region 161 2nd area | region 163 Prism 1600 Incident surface 1601 Output surface 1630 Side surface 1631 Side surface

Claims (9)

A light source, a mounting member that supports the light source and is attached to a fixture body of a lighting fixture, and a cover that surrounds the light source and is configured to transmit light emitted from the light source,
The cover includes a first light transmissive portion disposed to cover the light source from the front, a second light transmissive portion disposed to face the light source with the first light transmissive portion interposed therebetween, and the first A connecting portion that connects the first light transmitting portion and the second light transmitting portion;
The first light transmitting portion is configured to arrange a second region having a distance farther than the first region around the first region having a relatively close distance to the light source,
The first region of the first light transmitting part is configured to have a higher ratio of diffusing the light emitted from the light source than the second region of the first light transmitting part. A light source unit characterized by   The first region of the first light transmitting part is configured to have a higher diffusibility of light emitted from the light source than the second region of the first light transmitting part. The light source unit according to claim 1.   3. The light source unit according to claim 1, wherein the first light transmitting part is formed in a curved shape protruding in a direction away from the light source.   The said 1st area | region of a said 1st translucent part is comprised so that thickness may be thicker than the said 2nd area | region of the said 1st translucent part, The any one of Claims 1-3 characterized by the above-mentioned. The light source unit according to item. The first translucent part faces the light source and is incident with light incident from the light source, and faces the light source across the incident surface, and emits light incident from the incident surface. An exit surface;
A plurality of prisms are provided on the exit surface of the first region of the first light transmitting portion, each of the plurality of prisms is formed in a triangular prism shape, and each of the plurality of prisms has three side surfaces. The side surface of the two side surfaces that are connected to the emission surface at one side surface and that is closer to the light source among the two side surfaces excluding the one side surface, and the light source among the two side surfaces. 5. The light source unit according to claim 1, wherein the light source unit is formed so as to have an area larger than that of a side surface having a longer distance. The first translucent part faces the light source and is incident with light incident from the light source, and faces the light source across the incident surface, and emits light incident from the incident surface. An exit surface;
A plurality of prisms are provided on the incident surface of the first region of the first light transmitting portion, each of the plurality of prisms is formed in a triangular prism shape, and each of the plurality of prisms has three side surfaces. One side surface of the two side surfaces is connected to the incident surface, and the side surface of the two side surfaces other than the one side surface that is closer to the light source is connected to the light source of the two side surfaces. 6. The light source unit according to claim 1, wherein the light source unit is formed so as to have an area larger than that of a side surface with a longer distance.   The first region of the first light-transmitting portion is configured such that the straight line connecting the connection portion between the second light-transmitting portion and the connection portion and the light source intersects the light source with respect to the first light-transmitting portion. The light source unit according to claim 1, wherein the light source unit is a region having a short distance.   The said 2nd translucent part is formed in the flat plate shape which enlarged the width | variety of the surface which opposes the said light source compared with the distance from the said light source. The light source unit according to claim 1.   An illumination fixture comprising: the light source unit according to any one of claims 1 to 8; and a fixture main body that supports the light source unit.

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