JP2009104913A - Lighting apparatus, and emergency light - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting apparatus which has a light distribution in which a prescribed brightness can be obtained easily in a longitudinal direction, and to provide an emergency light. <P>SOLUTION: The lighting apparatus is equipped with a light source part 13 consisting of a semiconductor light-emitting element 11 and a lens body 12 which is formed so as to emit from an emitting face divided into a main distribution light A and an auxiliary distribution light B, a first light-emitting part 15 consisting of a reflector 14 which reflects so that the auxiliary distribution light of the light source part may be superimposed on the main distribution light and extends the main distribution light in the optical axis direction, a second light-emitting part 17 consisting of a reflector 17 which reflects a part of auxiliary distribution light of the light source part to the other auxiliary light distribution side, an apparatus main body 18 in which the first light-emitting part and the second light-emitting are installed so that at least the main distribution light of the first light-emitting part may be located at the outside than the main distribution light of the second light-emitting part in the longitudinal direction of the irradiation face, and a lighting device 20 to light the semiconductor light-emitting element. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a lighting apparatus and an emergency light using a semiconductor light emitting element such as a light emitting diode as a light source.

  In this type of lighting equipment, particularly downlights and emergency lights, lighting equipment including a light control body such as a lens has been proposed so that light emitted from a light emitting diode is irradiated in a predetermined direction. For example, in Patent Document 1, light emitting diodes arranged on three straight lines, first and second lenses formed so as to obtain a relatively wide-angle light distribution, and relatively narrow An LED lighting apparatus and an LED emergency light that illuminate a wide area by suppressing unevenness in illuminance by using a third lens capable of obtaining angular light distribution have been proposed. In this prior art, the first and second lenses each illuminate with a relatively wide-angle light distribution, and the third lens relatively moves between the extended lines of the optical axes of the first and second lenses. By illuminating with a narrow-angle light distribution, the area illuminated by the illumination light emitted from the instrument body can be widened, and the illumination area can be made to have a substantially constant brightness.

  Further, Patent Document 2 is formed such that the incident end is a concave surface, the output end is a substantially flat surface, the middle portion of the side surface is a thick curved surface, and the cross section with respect to the central axis is circular. The lens is formed so that the light incident on the side is totally reflected on the inner surface of the side surface and refracted in the direction away from the central axis at the exit end, and disposed on the entrance end side of the lens. LED lighting fixtures and LED emergency lights composed of light emitting diodes have been proposed. According to this prior art, a bat wing-like light distribution in the vertical direction is obtained, and it is possible to secure the illuminance directly below and around the instrument.

On the other hand, in downlight-type lighting fixtures and emergency lights that are directly attached to or embedded in the ceiling, generally, an illuminance (brightness) of a certain value or more is required for a floor surface within a predetermined range from directly below the fixture. For this purpose, the instrument needs to have a wide-angle light distribution characteristic. In particular, emergency lights are required to have a wide-angle light distribution with a brightness of 11x (lux) or more.
JP 2007-234403 A JP 2005-129517 A

  The LED lighting fixture and emergency light of Patent Document 1 are a combination of the first and second lenses for obtaining a relatively wide-angle light distribution and the third lens for obtaining a relatively narrow-angle light distribution, The illuminated area can be widened and the illuminated area can be made almost constant brightness, but basically the irradiation pattern is almost circular, and when light is needed only in the longitudinal direction such as corridors and passages, The light in the short direction is wasted too much. For this reason, the brightness in the longitudinal direction is insufficient, and it is difficult to further reduce the number of installed devices because there is a limit to further widening the arrangement interval of the instruments. In addition, as a lens body for controlling light, there are two types of lenses: a first lens and a second lens for obtaining a relatively wide-angle light distribution, and a third lens for obtaining a relatively narrow-angle light distribution. A lens is required, which increases the cost of the equipment.

  In addition, the LED lighting apparatus and the emergency light of Patent Document 2 can obtain a bat wing-like light distribution in the vertical direction, and can ensure the illuminance directly below and around the apparatus. Basically, the irradiation pattern is nearly circular, and when light is required only in the longitudinal direction, such as in a corridor or a passage, light in the short direction is wasted. In particular, the illuminance just below and around is ensured, the brightness in the longitudinal direction is further insufficient, and further reduction in the number of installed units becomes even more difficult. In addition, the lens body has a special configuration in which the incident end is a concave surface, the output end is a substantially flat surface, the middle portion of the side surface is a thick curved surface, and the cross section with respect to the central axis is circular. It becomes necessary and difficult to process, resulting in a cost increase.

  An object of this invention is to provide the lighting fixture and emergency light which have light distribution which is easy to ensure predetermined | prescribed brightness along a longitudinal direction.

  The invention of the lighting apparatus according to claim 1 has a semiconductor light emitting element, an incident surface and an exit surface, and the emitted light of the semiconductor light emitting element incident on the incident surface is divided into main light distribution and main distribution along the optical axis direction. A light source unit comprising a lens body formed so as to be emitted from the exit surface in a state of being separated into an auxiliary light distribution having a luminous intensity peak in a direction different from the light; and the auxiliary light distribution of the light source unit and the light source unit A first light-emitting unit made of a reflector that reflects the main light distribution so as to be superimposed on the main light distribution, and extends the main light distribution in the direction of the optical axis; A second light emitting portion made of a reflector to be reflected to the side; an opening, the first light emitting portion and the second light emitting portion are arranged substantially linearly in the opening, and at least with respect to the longitudinal direction of the irradiation surface The instrument book arranged so that the main light distribution of the first light emitting unit is located outside the main light distribution of the second light emitting unit If, characterized by comprising a; and the semiconductor light emitting element lighting device for lighting a.

  The luminaire of the present invention includes a first light-emitting unit made of a reflector that reflects the auxiliary light distribution of the light source unit so as to overlap the main light distribution and extends the main light distribution in the optical axis direction, and the auxiliary light distribution of the light source unit. A second light-emitting part made of a reflector that reflects a part of the second light-emitting side to the other auxiliary light distribution side, and an opening, and the first light-emitting part and the second light-emitting part are arranged substantially linearly in the opening, A predetermined brightness along the longitudinal direction is obtained by the instrument body disposed so that at least the main light distribution of the first light emitting unit is located outside the main light distribution of the second light emitting unit with respect to the longitudinal direction of the irradiation surface. It becomes easy to secure.

  In the present invention, the luminaire is preferably a luminaire that is installed in a place that requires a predetermined brightness in the longitudinal direction, such as a corridor or a passage. It applies to all lighting fixtures such as being installed in places where brightness is required. Further, it may be an embedded lighting fixture such as a downlight, or a lighting fixture installed by other installation means such as a direct mounting type or a ceiling hanging type.

  As the semiconductor light emitting element, a light emitting element using a semiconductor as a light source, such as a light emitting diode or a semiconductor laser, is allowed. The semiconductor light emitting element may be configured by arranging one semiconductor light emitting element on a substrate, or may be configured as a line module by arranging a plurality of semiconductor light emitting elements in a straight line or a curve. The light emitting elements may be arranged in a matrix shape so as to form a rectangular shape, or may be configured in a disk shape so as to form a point module with a plurality of semiconductor light emitting elements. The shape etc. which are arrange | positioned are not limited to a specific thing.

  The lens body separates the emitted light of the semiconductor light emitting element incident on the incident surface from the emission surface in a state of being separated into a main light distribution along the optical axis direction and an auxiliary light distribution having a luminous intensity peak in a direction different from the main light distribution. The light control body is formed so as to be emitted, and may be formed of transparent glass or synthetic resin such as acrylic.

  It is preferable that the light source units of the first light emitting unit and the second light emitting unit are constituted by, for example, two light source units, respectively, so that predetermined light distribution along each longitudinal direction can be obtained from both sides of the instrument. Each of the light sources may obtain a predetermined light distribution along one longitudinal direction from only one side of the instrument. Further, the light source parts constituting the first light emitting part and the second light emitting part are required even if they are composed of a semiconductor light emitting element and a lens body made of common parts having the same performance, light distribution characteristics, etc. You may be comprised by the separate components which have exceptional performance, a light distribution characteristic, etc.

  The reflector of the first light emitting unit is a light control body for reflecting the auxiliary light distribution of the light source unit so as to overlap the main light distribution and extending the main light distribution in the optical axis direction, and the second light emitting unit. The reflector is a light control body that reflects a part of the auxiliary light distribution of the light source unit to the other auxiliary light distribution side, and each of the reflectors of the first and second light emitting units is PBT (polybutylene terephthalate) or the like. Or a white synthetic resin or a metal such as aluminum or stainless steel. Further, it may be formed by applying a mirror surface or semi-mirror surface processing to the above synthetic resin or metal. The reflector may be formed integrally with the support that supports the light source unit, or may be configured separately from the support. In addition, the reflectors of the first and second light emitting units may be made of the same material or different materials, and further, the reflectors may be integrally formed. It may be configured separately.

  According to a second aspect of the present invention, in the lighting fixture according to the first aspect, the second light emitting portion has a predetermined angle on the left and right with a vertical line as a center at a substantially central portion of the opening of the fixture main body. The first light emitting unit is disposed outside the opening of the instrument main body with respect to both sides of the second light emitting unit, and arranged at a predetermined angle on the left and right with respect to the vertical line. .

  In the present invention, the predetermined angle at which the first and second light emitting units are arranged is a predetermined angle along the longitudinal direction of the irradiation surface by increasing the angle of the first light emitting unit and narrowing the angle of the second light emitting unit. It is preferable to obtain a light distribution that facilitates ensuring brightness, but even if both angles are the same, or conversely, the angle of the first light emitting unit is narrowed and the angle of the second light emitting unit is widened. Also good.

  According to a third aspect of the present invention, in the lighting apparatus according to the first or second aspect, the transmissive cover has a transmissive cover along the opening surface of the opening, and the transmissive cover and the first and second light emitting units are provided. And an optical axis of 30 ° to 90 °.

  According to a fourth aspect of the present invention, there is provided the lighting device according to any one of the first to third aspects; a battery housed in the main body of the lighting device; and a semiconductor light emitting device in which a DC voltage is input from the battery during a power failure And an emergency lighting device for lighting the lamp.

  In the emergency light of the present invention, when a power failure occurs, the semiconductor light emitting element is turned on by the emergency lighting device, and it becomes easy to ensure a predetermined brightness in the longitudinal direction.

  In the present invention, the emergency light is preferably an emergency light installed in a place that requires a predetermined brightness in the longitudinal direction, such as a hallway or a passage, but the installation location is not particularly limited. Further, the means for installing may be an embedded type or a directly attached type.

  According to the first aspect of the present invention, the first light emitting unit made of a reflector that reflects the auxiliary light distribution of the light source unit so as to overlap the main light distribution and extends the main light distribution in the optical axis direction, and the light source unit A second light-emitting portion made of a reflector that reflects a part of the auxiliary light distribution toward the other auxiliary light distribution side, and an opening, and the first light-emitting portion and the second light-emitting portion are substantially linearly formed in the opening. And a predetermined brightness in the longitudinal direction by an instrument main body disposed so that at least the main light distribution of the first light emitting unit is located outside the main light distribution of the second light emitting unit with respect to the longitudinal direction of the irradiation surface. It is possible to provide a luminaire having a light distribution that is easy to ensure.

  According to invention of Claim 2, a 2nd light emission part is arrange | positioned in the approximate center part of the opening part of an instrument main body with a predetermined angle on either side centering | focusing on a perpendicular line, The 1st light emission part is By arranging it on the outside of the opening of the instrument body with respect to both sides of the second light emitting part and having a predetermined angle to the left and right with respect to the vertical line, it is predetermined along the longitudinal direction from both sides of the instrument. It is possible to provide a luminaire having a light distribution that can easily ensure the brightness of the light.

  According to invention of Claim 3, it has a transparent cover along the opening surface of an opening part, and the optical axis of a transparent cover and a 1st, 2nd light emission part makes an angle of 30 degrees-90 degrees. By having it arranged, reflection on the inner surface of the transmissive cover can be minimized and a highly efficient lighting apparatus can be provided.

  According to the fourth aspect of the present invention, it is possible to provide an emergency light having a light distribution in which the semiconductor light emitting element is turned on by the emergency lighting device at the time of a power failure and the predetermined brightness is easily secured in the longitudinal direction.

  Hereinafter, embodiments of a lighting fixture and an emergency light according to the present invention will be described.

  In this embodiment, an emergency light is installed on the ceiling of a corridor or a passage. As shown in FIG. 1, the emergency light 10 includes a light source unit 13 including a semiconductor light emitting element 11 and a lens body 12, and a light source unit. 13 and the first light emitting part 15 comprising the reflector 14, the second light emitting part 17 comprising the light source part 13 and the reflector 16, the instrument main body 18 provided with the first light emitting part and the second light emitting part, and the instrument main body. The battery 19 is composed of an emergency lighting device 20 that inputs a DC voltage from the battery and turns on the semiconductor light emitting element in the event of a power failure.

  The semiconductor light emitting element 11 is composed of a light emitting diode (hereinafter referred to as “LED”), and the LED 11 in this embodiment has a high luminance that emits white light by a blue LED chip and a yellow phosphor excited by the blue LED chip. The LED 11 is composed of a high-power LED, and light is mainly emitted in one direction, that is, the direction of the optical axis oo of the LED. The LED 11 is mounted and supported on a substrate 11a made of a rectangular circuit board. Here, the optical axis oo is substantially perpendicular to the surface of the substrate 11a on which the LEDs 11 are mounted.

  The lens body 12 is made of, for example, tempered glass, and is constituted by a convex lens having a dish shape having an entrance surface 12a and an exit surface 12b as shown in FIG. 4A. A recess 12c is formed at the center of the entrance surface. The emission surface is formed in a substantially hemispherical shape. As shown in FIG. 4, the lens body 12 houses the LED 11 in a concave portion 12 c that is an incident surface. At this time, the optical axis oo of the LED 11 and the optical axis xx of the lens body 12 are disposed and housed so as to substantially coincide, and the support portions 12d formed at both ends are fixed to the substrate 11a with screws or the like. Secured by means. Thereby, the light source part 13 which consists of LED11 and the lens body 12 is comprised.

  When the LED 11 is turned on, the light source unit 13 emits light from the emission surface 12b with the light distribution characteristic as shown in FIG. That is, both sides of the main light distribution A along the optical axis oo direction and the main light distribution A having a luminous intensity peak in a direction different from the main light distribution from the emission end of the LED 11 emitted from the emission surface 12b are oblique to both sides. The light is emitted from the emission surface 12b in a state of being separated into auxiliary light distributions B and B along the direction.

  The first light emitting unit 15 includes the LED 11 and the lens body 12 as described above, the two left and right light source units 13 having the above-described light distribution characteristics, and the left and right units disposed corresponding to the two light source units, respectively. It comprises two reflectors 14. The two reflectors 14 are formed by cutting a trumpet-like reflector having a reflecting surface 14a that forms a substantially paraboloid into a half cut with respect to the optical axis yy of the reflector.

  When the LED 11 is turned on, the first light emitting unit 15 emits light from the emission surface 12b with the light distribution characteristic as shown in FIG.

  That is, the auxiliary light distribution B, B on both sides of the light source unit 13 shown in FIG. 8 is reflected so as to be superimposed on the main light distribution A, and a light distribution C that extends the main light distribution in the optical axis oo direction is obtained. (FIG. 9).

  The second light emitting unit 17 includes the LED 11 and the lens body 12 as described above, the left and right two light source units 13 having the above-described light distribution characteristics, and the left and right units respectively disposed corresponding to the two light source units. It is composed of two reflectors 16. The two reflectors 16 are constituted by substantially flat reflectors in which the cross-sectional shape of the reflecting surface 16a forms a gentle arc shape.

  When the LED 11 is turned on, the second light emitting unit 17 emits light from the emission surface 12b with the light distribution characteristic as shown in FIG.

  That is, a part of the auxiliary light distribution B of the light source unit 13 shown in FIG. 8 is reflected to the other auxiliary light distribution B side, and a light distribution D that further supplements the space between the main light distribution A and the auxiliary light distribution B is obtained. (FIG. 10).

  In addition, the light source part 13 which comprises the 1st light emission part 15 and the 2nd light emission part 17 is comprised by LED11 and the lens body 12 which consist of common components which have the same performance, a light distribution characteristic, etc.

  The 1st light emission part 15 and the 2nd light emission part 17 which were comprised above are arrange | positioned at the support body 21 as follows. That is, the support has an elongated box shape, and support portions 21a and 21a inclined obliquely upward are integrally formed on both sides thereof, and the substrate 11a of the light source unit 13 of the first light emitting unit 15 is formed on each of the support portions. Fit and adhere to support. Further, the two reflectors 14 of the first light-emitting portion 15 are reflective surfaces so that the optical axis yy of the paraboloid of revolution and the optical axis oo of the LED 11 substantially coincide with each other above the support portions 21a. 14a is formed so as to cover from above (FIG. 7).

  Support portions 21b and 21b that are inclined obliquely upward are integrally formed on both sides of the support body 21 at the substantially central portion of the bottom surface, and the substrate 11a of the light source portion 13 of the second light emitting portion 17 is respectively formed on the support portions. Fit and adhere to support. Further, the two reflectors 16 of the second light emitting unit 17 are integrally formed above the support unit 21b such that the arc-shaped reflecting surface 16a is positioned in a direction substantially orthogonal to the optical axis oo of the LED 11 (FIG. 7).

  In the figure, reference numeral 22 denotes an auxiliary reflector having a semicircular arc in cross section, and the two light source parts 13 and the two reflectors 16 of the second light emitting part 17 are positioned so as to be covered from the side surface direction. It is formed integrally with the body 21.

  Further, the first light emitting unit 15 and the second light emitting unit 17 have center lines (the optical axis oo of the LED 11, the optical axis xx of the lens body 12, and the optical axis yy of the reflectors 14 and 16). Each light emitting part is arranged on a substantially straight line so as to be positioned on the center line zz of the support 21 (FIG. 5).

  The support 21 is integrally formed of a synthetic resin such as PET, and the support portions 21a and 21b of the first and second light emitting portions 15 and 17 are formed integrally with the reflectors 14 and 16 and the auxiliary reflector 22. The reflecting surfaces 14a and 16a of the reflectors are configured by mirror finishing by means such as aluminum vapor deposition.

  The instrument main body 18 for housing and arranging the first light emitting unit 15 and the second light emitting unit 17 configured as described above is configured such that both side surfaces in the longitudinal direction and both side surfaces in the lateral direction are inclined downward with respect to each other. A box-shaped cover member having a substantially trapezoidal cross section is formed, and openings are formed on the bottom surface and both side surfaces in the lateral direction. The opening 23a on the bottom surface forms a rectangular opening in which the substantially central portion of the bottom surface facing the reflector 16 and the light source unit 13 of the second light emitting unit 17 is open, and the opening 23b on both side surfaces is the first opening 23b. A substantially semicircular opening facing the reflector 14 and the light source unit 13 of the light emitting unit 15 is formed. Translucent transparent covers 23c, 23d, and 23d made of transparent or translucent glass, synthetic resin, or the like are fitted along the opening surfaces of the opening 23a and the opening 23b on both side surfaces.

  In the instrument main body 18, the support 21 that supports the first light emitting part 15 and the second light emitting part 17 is positioned on the center line pp in the longitudinal direction of the instrument main body 18. Further, the first light emitting unit 15 and the second light emitting unit 17 are positioned so as to face the respective openings 23a and 23b, and the support body 21 is accommodated and supported in the instrument main body through the attachment member 24 (see FIG. 3, FIG. 5).

  Thereby, the light source unit 13 of the second light emitting unit 17 faces the substantially central portion of the opening 23a on the bottom surface of the fixture body 18, and the optical axis oo of each LED 11 (the optical axis xx of the lens body 12). ) Are arranged on the left and right with respect to the vertical line vv, with an angle R1 of about 50 ° in this embodiment.

  The light source unit 13 of the first light emitting unit 15 is substantially linear with the second light emitting unit on both sides of the second light emitting unit 17, and is disposed outside the opening 23 a of the instrument body with respect to the second light source unit 17. The optical axis oo of each LED 11 (the optical axis xx of the lens body 12) faces to the left and right with respect to the vertical line v-v, and faces approximately 70 ° in this embodiment. Is disposed and accommodated at an angle R2.

  Further, the transmissive covers 23c, 23d, and 23d and the optical axes oo of the first and second light emitting units are arranged with an angle of 30 ° to 90 °. In the present embodiment, the transmissive cover 23c and the optical axis oo of the second light emitting unit 17 are disposed at an angle R3 of about 40 °, and the transmissive covers 23d and 23d and the first light emitting unit 15 The optical axis oo is disposed at an angle R4 of about 90 °, and the internal reflection loss of the transmissive cover is minimized.

  The battery 19 and the lighting device 20 that turns on each LED 11 when a DC voltage is input from the battery in the event of a power failure are supported on the lower surface of the upper surface plate 25 of the instrument body 18 and covers the opening on the upper surface of the instrument body with the upper surface plate. It is installed and accommodated in the upper space in the instrument body. In the figure, reference numeral 26 denotes a terminal block.

  In addition, the instrument main body 18 and the upper surface plate 25 are comprised with metals, such as an iron plate and aluminum, and are assembled in a box shape by means, such as spot welding, or aluminum die casting.

  The emergency lighting device 20 is provided in the lighting unit 30 as shown in FIG. The lighting unit is further provided with a charging circuit 31 and a switching circuit 32, and an inspection switch 33 and a charging monitor 34 are provided. Then, power lines 35 and 35 connected to the charging circuit 31 are led out, and the power lines are connected to a commercial AC power source Vs via power terminals 36 and 36. In addition, lead wires 37 and 37 electrically connected to the charging circuit 31 or the lighting device 20 are led out, and the lead wires are connected to the battery 19 via the connector 38 and the fuse F1. Furthermore, lamp lines 39 and 39 connected to the lighting device 20 are led out, and the lamp lines are connected to the LEDs 11 of the first light emitting unit 15 and the second light emitting unit 17.

  The charging circuit 31 is configured to charge the battery 19. When the battery is charged, the charging monitor 34 is lit. The switching circuit 32 is configured such that the battery 19 is manually connected to the lighting device 20 so that the battery 19 and the lighting device 20 are connected during a power failure. When the pull string 40 of the inspection switch 33 is pulled, the inspection switch 33 connects the battery 19 and the lighting device 20. Thereby, it is confirmed that each LED 11 is lit during a power failure.

  As shown in FIG. 3, the emergency lights 10 configured as described above are installed with a plurality of units directly attached and wired along a ceiling surface T such as a corridor or a passage.

  The instrument main body 18 is installed so that the longitudinal direction thereof, that is, the center line zz of the support 21 supporting the first light emitting unit 15 and the second light emitting unit 17 is located on the center line in the longitudinal direction of the corridor or the passage. To do. Thereby, the light source part 13 of the 1st light emission part 15 and the 2nd light emission part 17 is installed in the state which faced the downward, ie, floor surface, and each optical axis of the light source part 13 substantially corresponded to the longitudinal direction of the corridor or the passage. The Further, the pull string 40 is pulled out downward, and the monitor 34 faces the lower surface.

  Next, the operation of the emergency light 10 constructed and installed as described above will be described. When a power failure occurs, a DC voltage is input from the battery 19 to the emergency point device 20 and the LEDs 11 of the first light emitting unit 15 and the second light emitting unit 17 are turned on.

  When each LED 11 of the first light emitting unit 15 is turned on, the emitted light from the LED 11 is incident on the incident surface 12 a of each lens body 12. And the radiated light from LED11 is radiated | emitted from the output surface 12b which makes a convex lens, and each radiate | emits through the transparent cover 23d provided in the opening part 23b of the side surface of the instrument main body 18. And the light radiate | emitted from the opening part 23b each extends in the longitudinal direction shown in FIG. 8, and forms the main light distribution A. As shown in FIG. At the same time, a part of the remaining part is refracted by the emission surface 12b and is emitted in a state of being separated into auxiliary light distributions B and B along diagonal directions on both sides from the emission end of the main light distribution A having a luminous intensity peak in a direction different from the main light distribution. The auxiliary light distribution B emitted from the surface 12b is formed.

  The substantially upper half of the light forming the main light distribution A and the auxiliary light distributions B and B is reflected by the reflector 14 and reflected so that the auxiliary light distributions B and B are superimposed on the main light distribution A side. Extend the main light distribution in the direction of the optical axis. Thereby, the light distribution C which extends the main light distribution in the optical axis direction as shown in FIG. 9 is obtained. The light forming this light distribution C is arranged downward with the optical axis oo of the LED 11 (the optical axis xx of the lens body 12) having an angle R2 of about 70 ° with respect to the vertical line. The floor surface away from both sides of the instrument body 18 is illuminated. In other words, the light is emitted from the first light emitting portions 15 disposed on both sides of the instrument body 18 with substantially the same light distribution C in the left-right direction. In other words, the light is emitted with substantially the same light distribution C along both sides of the installed instrument, that is, along the longitudinal direction of the back side and the front side of the corridor or passage.

  At the same time, when each LED 11 of the second light emitting unit 17 is turned on, the emitted light from the LED 11 is incident on the incident surface 12 a of each lens body 12, similarly to the first light emitting unit 15. And the radiated light from LED11 is radiated | emitted from the output surface 12b which makes | forms a convex lens, and each radiate | emits through the transparent cover 23c provided in the opening part 23a of the bottom face of the instrument main body 18. And the light radiate | emitted from the opening part 23a is extended in the longitudinal direction shown in FIG. 8, respectively, and forms the main light distribution A. FIG. At the same time, a part of the remaining part is refracted by the emission surface 12b and is emitted in a state of being separated into auxiliary light distributions B and B along diagonal directions on both sides from the emission end of the main light distribution A having a luminous intensity peak in a direction different from the main light distribution The auxiliary light distribution B emitted from the surface 12b is formed.

  The LED 11 and the lens body 12 constituting the light source unit 13 of the first and second light emitting units 15 and 17 are made of common parts having similar performance, characteristics, etc., and are substantially the same as shown in FIG. Form a light distribution.

  A light beam in the upper half of the light that forms the main light distribution A and the auxiliary light distribution B is reflected by the reflector 16, and one of the auxiliary light distributions B is reflected to the other auxiliary light distribution B side so that the main light distribution A is reflected. Extend in a direction substantially perpendicular to the optical axis direction. Thereby, a part of the auxiliary light distribution B as shown in FIG. 10 is reflected to the other auxiliary light distribution B side to obtain a light distribution D that further supplements the space between the main light distribution A and the auxiliary light distribution B. The light including this light distribution D is disposed downward with the optical axis oo of the LED 11 (the optical axis xx of the lens body 12) having an angle R1 of about 50 ° with respect to the vertical line. The floor surface immediately below the appliance is illuminated from the bottom surface of the appliance body 18, and the illuminance (brightness) immediately below is ensured. In other words, the light is emitted from the second light emitting unit 17 disposed substantially at the center of the instrument main body 18 with light including substantially the same light distribution D in the left-right direction. In other words, light is emitted with light including substantially the same light distribution D on both sides, that is, the back side and the near side of the corridor or passage, just below the installed device.

  At the same time, the auxiliary light distribution B leaked laterally by the two light sources 13 of the first and second light emitting units and the auxiliary reflector 22 covering the two reflectors 16 of the first and second light emitting units from the side surface direction. The light distribution D is more reliably generated by reflecting a part of the light.

  Furthermore, the light distributions of the first and second light emitting units 15 and 17 that simultaneously emit light including the light distribution C and the light distribution D are combined, and the floor surface of the corridor or passage is shown in FIG. Illuminance distribution as shown is obtained. That is, the illuminance distribution diagram shown in FIG. 11 is obtained by installing the emergency lights 10 of the present embodiment at intervals of about 15 m, and in a range of about 2 m of a passage having a passage width of about 6 m, a portion close to the place where the appliance is installed. A bright portion of 6 lx to 2 lx is distributed, and a bright portion of 4 lx to 2 lx is also distributed in a substantially central portion (a position where light is most deficient) between the instrument installations in the longitudinal direction. Thereby, the floor surface of the illumination area along the longitudinal direction of the corridor or the passage from both sides of the appliance can secure a predetermined brightness sufficiently and reliably with a brightness of 11x or more necessary as an emergency light. .

  As a result, in the conventional product, it is possible to set the installation interval of the instruments that are usually installed at an interval of about 10 m to about 15 m, and the number of emergency lights installed can be reduced.

  As described above, according to the emergency light 10 of the present embodiment, in the first light emitting unit 15, the auxiliary light distributions B and B formed by the light source unit 13 are reflected by the reflector 14 so as to be superimposed on the main light distribution A. A light distribution C obtained by extending the main light distribution in the optical axis direction is formed, and a light distribution characteristic in which the floor surface away from both sides of the instrument body 18 is illuminated is configured. A part of the auxiliary light distribution B formed in step S1 is reflected by the reflector 16 toward the other auxiliary light distribution B to form a light distribution D that further supplements the space between the main light distribution A and the auxiliary light distribution B. A light distribution characteristic in which the floor surface immediately below the fixture is illuminated from the bottom surface of the main body 18 and includes the light distribution C and the light distribution D configured by the first and second light emitting units 15 and 17. In combination with the first luminous intensity peak on the floor surface away from both sides of the instrument body 18 and the instrument directly. Since the second luminous intensity peak was formed on the floor of the peripheral part, the floor surface of the lighting area along the longitudinal direction of the corridor and the passage from both sides of the appliance was sufficient and surely secured the predetermined brightness can do.

  Further, the optical axis oo of each LED 11 constituting the light source unit 13 of the first light emitting unit 15 (the optical axis xx of the lens body 12) has an angle R2 of about 70 ° with respect to the vertical line vv. Therefore, the first luminous intensity peak can be surely configured on the floor surface away from both sides of the instrument body 18. Further, the optical axis oo of each LED 11 constituting the light source unit 13 of the second light emitting unit 17 (the optical axis xx of the lens body 12) has an angle R1 of about 50 ° with respect to the vertical line vv. Since it is arrange | positioned downward, a 2nd luminous intensity peak can be comprised reliably on the floor surface of the peripheral part right under an instrument. At the same time, the auxiliary reflector 22 reflects a part of the auxiliary light distribution B leaked to the side, so that the second luminous intensity peak is more reliably formed. By combining the first and second light emitting portions 15 and 17 disposed downward at these predetermined angles, the floor surface of the illumination area along the longitudinal direction of the corridor and the passage from both sides of the appliance is more sufficient, and The predetermined brightness can be ensured even more reliably.

  As a result, the installation interval of emergency lights can be greatly widened, the number of emergency lights installed can be reduced, and installation costs can be greatly reduced. Can be provided.

  Since each LED 11 and lens body 12 constituting the light source unit 13 of the first and second light emitting units 15 and 17 are configured by common parts having the same performance, characteristics, etc., there are variations in optical characteristics in each light emitting unit. An emergency light with good performance can be configured. In addition, since the optical component composed of the LED 11, the lens body 12, and the reflectors 14 and 16 is integrally incorporated in the support body 21 or integrally molded, the optical system is less likely to be out of order, and higher performance is achieved. Can provide emergency lights.

  Further, the LED 11 and the lens body 12 which are relatively expensive electronic parts are used as common parts, and the light control is performed by the relatively inexpensive reflectors 14 and 16 which can be integrated with the support body 21 with synthetic resin. Since this is done, an emergency light that is advantageous in terms of cost can be provided.

  Further, the light source unit 13 of the first and second light emitting units 15 and 17 is configured so that the optical axis oo of each LED 11 (the optical axis xx of the lens body 12) is about 70 ° with respect to the vertical line as described above. And an angle of 30 ° to 90 ° between the transmissive cover and the optical axes oo of the first and second light emitting portions 15 and 17. Therefore, it is possible to minimize the internal reflection loss of the transmissive covers 23c and 23d at the openings 23a and 23b of the instrument body 18, and to provide a highly efficient emergency light. it can.

  As described above, in the illumination device of the present embodiment, the support 21 that supports the first and second light emitting units 15 and 17 is made of synthetic resin, but may be made of metal such as aluminum die casting. In this case, the circuit board 11a on which the LEDs 11 are mounted is supported on the support 21 via a separate base having electrical insulation to achieve electrical insulation. According to this, the heat which generate | occur | produces from LED11 can be efficiently transmitted to the support body 21 which consists of aluminum, and can be thermally radiated in outside air. In addition, the reflectors 14 and 16 of the first and second light emitting portions 15 and 17 can be formed integrally and without performing special mirror finishing.

  The instrument body 18 is made of a metal such as an iron plate, but may be made of a nonflammable synthetic resin in a box shape. Further, the appliance main body 18 may be formed in a cylindrical shape to constitute a ceiling-embedded emergency light.

  A pair of first and second light-emitting portions 15 and 17 are arranged on both sides of the instrument body 18 so as to illuminate both sides of the instrument along the longitudinal direction, but the first light-emitting portion is arranged on one side. 1 and a second light-emitting part are arranged, respectively, to construct an emergency light that illuminates along the longitudinal direction of one side, and is used as an emergency light suitable for an environment that has a wall directly underneath and illuminates only one side To do.

  In the present embodiment, a lighting fixture installed in the ceiling of a corridor or a passage is configured, and the configuration will be described with reference to FIG.

  In FIG. 13, the same parts as those in FIGS. 1 to 12 in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  As shown in FIG. 13, the lighting fixture of the present embodiment is a ceiling-mounted illumination in which the battery 19 and the lighting unit 30 are removed from the emergency light 10 of the first embodiment, and the lighting device 50 is disposed instead. Instrument 60.

  The lighting device 50 is connected to the commercial power source Vs, converts an alternating voltage into a direct voltage, and performs voltage adjustment to light each LED 11.

  As shown in FIGS. 13B and 13C, a plurality of LEDs 11 in the light source unit 13 of the first and second light emitting units 15 and 17 are used in order to obtain a predetermined brightness as a lighting fixture. In the example, the LED module is mounted on a disk-like substrate so as to form a point module with three LEDs 11, and the light source body 13 is incorporated into the incident surface 12a of the lens body 12 having a size and shape suitable for the point module. It is configured and used as a common light source unit for the first and second light emitting units 15 and 17.

  The lighting fixture of the present embodiment has the first luminous intensity peak on the floor surface away from both sides of the fixture main body 18 by the lighting of the LEDs 11 of the first and second light emitting portions 15 and 17, and the peripheral portion directly below the fixture. Second light intensity peaks are respectively formed on the floor surface, and the floor surface of the illumination area along the longitudinal direction of the corridor or the passage from both sides of the appliance can be illuminated with sufficient predetermined brightness.

  Also in the lighting apparatus of the present embodiment, a ceiling-embedded downlight may be configured. Other configurations, operations, operational effects, modifications, and the like in this embodiment are the same as those in the first embodiment.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various design changes can be made without departing from the scope of the present invention.

The perspective view which shows the emergency light which concerns on 1st embodiment of this invention, and shows the state which removed the cover member of the instrument main body. The perspective view which similarly shows an emergency light. Sectional drawing which follows FIG. 5A-A which similarly shows an emergency light. Similarly, an emergency light is shown, (a) is an enlarged sectional view showing the light source part, (b) is a front view showing the light source part of the first light emitting part, and (c) is a front view showing the light source part of the second light emitting part. Figure. The bottom view which similarly shows an emergency light. The side view which similarly shows an emergency light. Similarly the perspective view which looked at the light source part of the 1st, 2nd light emission part of an emergency light from the lower surface side. Similarly the light distribution characteristic figure of the light source part of an emergency light. Similarly the light distribution characteristic figure of the 1st light emission part of an emergency light. Similarly the light distribution characteristic figure of the 2nd light emission part of an emergency light. Similarly, an illuminance distribution map of the floor surface when an emergency light is installed in the passage and is lit. Similarly, the internal wiring diagram of the emergency light. The lighting fixture which concerns on 2nd embodiment of this invention is shown, (a) is sectional drawing of the lighting fixture corresponded in FIG. 3, (b) is a front view which shows the light source part of a 1st light emission part, (c) is. The front view which shows the light source part of a 2nd light emission part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Emergency light 11 Semiconductor light-emitting element 12 Lens body 12a Incident surface 12b Outgoing surface A Main light distribution B Auxiliary light distribution 13 Light source part 14 Reflector 15 1st light emission part 16 Reflector 17 2nd light emission part 18 Instrument main body 19 Battery 20 Lighting Device 23a, 23b Opening 23c, 23d Transparent cover 60 Lighting fixture

Claims (4)

A semiconductor light emitting device and an incident surface and an output surface, and the emitted light of the semiconductor light emitting device incident on the incident surface is an auxiliary distribution having a luminous intensity peak in a direction different from the main light distribution and the main light distribution along the optical axis direction. A light source portion comprising a lens body formed so as to be emitted from the emission surface in a state separated into light;
A first light-emitting unit made of a reflector that reflects the auxiliary light distribution of the light source unit so as to overlap the main light distribution and extends the main light distribution in the optical axis direction;
A second light-emitting unit made of a reflector that reflects a part of the auxiliary light distribution of the light source unit to the other auxiliary light distribution side;
The first light emitting unit and the second light emitting unit are arranged substantially linearly in the opening, and at least the main light distribution of the first light emitting unit with respect to the longitudinal direction of the irradiation surface is that of the second light emitting unit. An instrument body arranged to be located outside the main light distribution;
A lighting device for lighting the semiconductor light emitting element;
The lighting fixture characterized by comprising. The second light emitting unit is disposed at a substantially central portion of the opening of the instrument body with a predetermined angle on the left and right with a vertical line as a center, and the first light emitting unit is located on both sides of the second light emitting unit. The lighting fixture according to claim 1, wherein the lighting fixture is arranged outside the opening of the fixture main body and arranged at a predetermined angle to the left and right with respect to the vertical line. A transparent cover is provided along the opening surface of the opening, and the transparent cover and the optical axes of the first and second light emitting units are arranged at an angle of 30 ° to 90 °. The lighting apparatus according to claim 1 or 2, characterized in that: A lighting fixture according to any one of claims 1 to 3;
A battery housed in the instrument body;
An emergency lighting device that turns on the semiconductor light emitting element when a DC voltage is input from the battery in the event of a power failure;
An emergency light characterized by comprising:

Images