JP5965707B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device.

  2. Description of the Related Art In recent years, illumination devices using highly directional LEDs (light emitting diodes, light emitting elements) as light sources have been provided. As an example of such a lighting device, there is a long lighting device attached to a ceiling surface or the like. For example, in Patent Document 1, a highly directional LED light source is disposed horizontally in the floor surface direction, and a reflection sheet is provided that is bent in a substantially U shape in cross-sectional view. It is arranged so as to be located on both edges of the panel, and the area directly under the lighting device tends to be conspicuously bright.

Japanese Patent No. 4528862

  However, since the reflection sheet in the product inner direction in Patent Document 1 is arranged close to the LED and tilted with respect to the vertical direction, the light irradiated from the LED to the reflection sheet in the product inner direction is directed directly below the lighting device. Although it becomes reflected light, the area directly under the lighting device becomes noticeably bright, but the uniformity (the uniformity of the illuminance distribution in the room) may be lowered.

  An object of the present invention is to provide an illuminating device that ensures a sufficient spread of light in the lateral direction (horizontal direction) with respect to the ceiling surface and has a high degree of uniformity.

In order to solve the above-mentioned problems, the light source unit is arranged between an instrument main body, a light source unit composed of light emitting diodes spaced apart from the instrument main body in two rows, and the light source unit spaced in two rows. A lighting device comprising: a power supply device for driving the light source; and a translucent cover provided so as to cover each of the light source units arranged in two rows apart from each other. The cover is provided in a state of being provided so as to cover the light source unit, and is provided in a lateral direction of the light source unit, and includes a return unit through which a part of the light from the light source unit is transmitted. The side surface is arranged so as to be substantially perpendicular to the instrument body and adjacent to a part of the surface of the translucent cover.

  ADVANTAGE OF THE INVENTION According to this invention, the spreading | diffusion device which fully ensures the breadth of the light to a horizontal direction (horizontal direction) with respect to a ceiling surface, and has high uniformity can be provided.

The perspective view which shows the illuminating device 10 of embodiment which concerns on this invention. FIG. The perspective view of the translucent cover 30. FIG. FIG. 2 is a partial cross-sectional view showing the light irradiation direction by cutting the lighting device of FIG. 1 so that the instrument main body 20 and the power supply device 70 pass in the upward direction and the short direction. Sectional drawing which cut | disconnects the illuminating device 10 of FIG. 1 so that the instrument main body 20 and the power supply device 70 may pass an upper direction and a transversal direction, and shows the irradiation range of light. Sectional drawing which cut | disconnected the illuminating device 10 of FIG. 1 so that the instrument main body 20 and the power supply device 70 might pass through an upper direction and a transversal direction, and was seen from the transversal direction.

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

  Reference numerals described in FIGS. 1 to 6 are common numerals in the following description. 10 is a lighting device, 20 is an instrument body, 21 is a skirt of the instrument body 20, 22 is an end of the instrument body 20, 23 is a raised portion of the instrument body 20, 24 is a recess formed in the raised portion 23, and 30 is transparent. A light cover, 31 is a support part of the light transmission cover 30, 32 is a light emission part of the light transmission cover 30, 33 is a return part of the light transmission cover 30, 34 is a pressing part of the light transmission cover 30, and 35 is formed on the support part 31. The groove part 36, the convex part formed on the return part 33, the reflector 40 as a reflector, the side part 41 of the reflector 40, the bottom curved part 42 of the reflector 40, the LED 50, and the LED 50 The light emitted in the direction of the light emitting unit 32, 52 'is the light after the light 52 is transmitted through the light emitting unit 32, 53 is the light emitted from the LED 50 in the direction of the returning unit 33, and 53' is the returning unit of the light 53. The light after passing through 33, 53 ″ passes through the light emitting part 32, and the light 53 ′ passes through the light emitting part 32. Later light, 54 is diffused light guided by the light unit 32, 56 is an irradiation range (inside) of the LED 50, 57 is an irradiation range (outside) of the LED 50, 60 is a light source substrate, 70 is a power supply device, and 72 is a power supply A terminal block, 74 is an end plate, 80 is an attachment member (screw, fastener, etc.), and 90 is a ceiling.

  When the lighting device 10 is attached to the ceiling 90, the ceiling side is the upward direction and the floor surface side is the downward direction. That is, when the illuminating device 10 is attached to the ceiling 90, it is attached so that the fixture main body 20 and the reflecting plate 40 may be arranged in the order from the upper side to the lower side. Moreover, since the external shape of the illuminating device 10 is a long and substantially rectangular parallelepiped, the illuminating device 10 has six surfaces. Thereafter, with the lighting device 10 attached to the ceiling 90 as a reference, the ceiling-side surface of the lighting device 10 is the upper surface, the floor-side surface of the lighting device 10 is the lower surface, and the illumination is orthogonal to the ceiling 90 and is long. The long side of the device 10 is referred to as the short side surface of the lighting device 10 that is perpendicular to the ceiling 90 other than the long side surface, the top surface, the bottom surface, and the long side surface. Further, hereinafter, the direction parallel to the ceiling 90 and parallel to the longitudinal side surface is referred to as the longitudinal direction, and the direction parallel to the ceiling 90 and parallel to the lateral side surface is referred to as the lateral direction.

  A schematic configuration of the illumination device 10 will be described below. The instrument body 20 fixed to the ceiling 90 is long and has a substantially inverted pattern when viewed from the longitudinal direction. A skirt 21 is provided in the lateral direction of the instrument body 20. Both skirts 21 are inclined from the lower side to the upper side as going to the end in the short direction, with the center part in the short direction of the instrument body 20 as a reference. That is, when the appliance main body 20 is attached to the ceiling surface, the skirt portion 21 is inclined with respect to the ceiling 90. The light source substrate 60 on which the LED 50 is mounted has a plate shape. There may be one light source substrate 60 or a plurality of light source substrates 60 may be connected. The light source substrate 60 is fixed to both the skirt portions 21 and is fixed so as to face the oblique lower surface with respect to the ceiling 90. The translucent cover 30 is a substantially half-pipe type. That is, the translucent cover 30 has a concave shape that is long in the longitudinal direction. The translucent cover 30 is fixed to both outer sides of the instrument body 20 in the short direction so as to cover the light source substrate 60. Therefore, the translucent cover 30 is fixed so as to be inclined with respect to the ceiling 90. A power supply device 70 for causing the LED 50 mounted on the light source substrate 60 to emit light so as to be sandwiched between the pair of translucent covers 30 and a power supply terminal block 72 for connecting a power supply cable for supplying power to the power supply device 70 are provided on the instrument body 20. Fixed. The end plates 74 are plate-shaped, and are fixed to both ends of the instrument body 20 in the longitudinal direction so as to cover the longitudinal ends of the translucent cover 30. The detachable reflector 40 has a substantially inverted V shape. The reflector 40 is substantially equal in length to the instrument body 20 in the longitudinal direction and is subjected to reflection treatment on the surface. Further, the reflection plate 40 is fixed to the instrument body 20 so as to cover the power supply device 70 and the power supply terminal block 72 and to be positioned between the pair of translucent covers.

  FIG. 3 is a perspective view of the translucent cover 30. The translucent cover 30 only needs to transmit light from the LED 50 that is a light source, and may be made of a transparent material or a translucent material. The translucent cover 30 may be diffusive or non-diffusible. If it is diffusive, the uniformity is high, and if it is non-diffusible, the efficiency is high. The translucent cover 30 includes a support portion 31, a light emitting portion 32, a return portion 33, and a presser portion 34, and is provided integrally. Each part is viewed from the longitudinal direction of the instrument main body 20, and the support portion 31 has a groove shape that can be locked to one of both end portions 22 of the instrument main body 20, and is connected to the support portion 31. The light emitting part 32 has a curved shape so as to cover the light source substrate 60, and the return part 33 connected to the light emitting part 32 has a plate shape in which a convex part or a concave part is formed, and the holding part 34 connected to the return part 33. Is a plate shape.

  FIG. 4 is a partial cross-sectional view showing a light irradiation state in which the lighting device 10 of FIG. 1 is cut so that the instrument main body 20 and the power supply device 70 pass in the upward direction and the short direction. Light irradiated in various directions from the LED 50, which is a light source, passes through the light-transmitting cover 30 fixed to the instrument body 20 so as to cover the light source substrate 60.

  The light 52 irradiated in the direction of the light emitting unit 32 passes through the light emitting unit 32 and becomes light 52 ′. The light 52 ′ is mainly light emitted in the floor direction.

  The light 53 irradiated in the direction of the return portion 33 is reflected by the side surface portion 41 of the reflector 40 disposed adjacent to the return portion 33 and becomes reflected light 53 ′ toward the light emitting portion 32 inside the translucent cover 30. Returned. The reflected light 53 ′ returned to the inner side of the translucent cover 30 is transmitted through the light emitting part 32 and becomes irradiation light 53 ″ toward the outer side of the lighting device 10, so that the effect of increasing the spread of the light in the lateral direction is obtained. Further, the uniformity can be increased by arranging the substrates obliquely, and the uniformity can be further increased by providing the reflector 40.

  Further, when the surface of the reflection plate 40 is subjected to a high reflection process with excellent light reflectivity, the reflection efficiency is increased, and the reflected light 53 ′ returning to the inside of the translucent cover 30 is increased, thereby obtaining the effect of increasing the light emission efficiency.

  When a diffusive material is used for the translucent cover 30, even in the highly directional LED 50, the light emitted to the light emitting portion 32 of the translucent cover 30 is surface-emitted by the diffusing component of the translucent cover 30, and the short direction The light is diffused light 54 to which light is guided to the ceiling surface in the vicinity of the lighting device 10. As a result, the brightness of the entire room is increased by increasing the brightness of the ceiling surface.

  The installation procedure to the ceiling in the illuminating device 10 attaches the fixture main body 20 with the translucent cover 30 fixed to the ceiling, performs electrical wiring such as a power cable on the power terminal block 72, and then fixes the reflector 40.

  When construction is performed in a state where the translucent cover 30 is not fixed to the instrument main body 20, a work for attaching the translucent cover 30 is required, which takes time and labor.

  FIG. 5 is a cross-sectional view showing a light irradiation state in which the lighting device 10 of FIG. 1 is cut so that the instrument main body 20 and the power supply device 70 pass in the upward direction and the short direction. The light source boards 60 on which the LEDs 50 are mounted are arranged obliquely in the outer direction of the lighting device 10 so as to be separated and arranged in two rows to reduce the overlapping range 56 irradiated from the respective LEDs 50 in the inner direction, and to the outer direction of the lighting device 10. The irradiation range 57 can be increased, and the effect of being able to irradiate a wide range with high uniformity.

  FIG. 6 is a cross-sectional view of the illumination device of FIG. 1 as seen from the short direction, with the instrument body 20 and the power supply device 70 cut along the upward direction and the short direction. A groove portion 35 formed in the support portion 31 that is one side of the translucent cover 30 is hooked on the skirt portion 20 of the instrument main body 20, and the convex portion 36 of the return portion 33 is elastically engaged with the concave portion 24 of the upright portion 23 of the instrument main body 20. The Further, the concave portion 24 of the return portion 33 may be formed into a concave shape, and the concave portion 24 of the upright portion 23 may be elastically engaged in a convex shape. Further, the convex shape may be cut and raised to be elastically engaged.

  In the actual use state, the reflecting plate 40 is fixed by a mounting member 80 (screw, fastener, etc.) with a force from the direction of the instrument body 20, that is, from the lower direction to the upper direction. The bottom curved portion 42 of the reflecting plate 40 comes into contact with the holding portion 34 of the light transmitting cover 30 to cause the light transmitting cover 30 to be pressed against the device main body 20, and the light transmitting cover 30 is mechanically applied to the device main body 20 in the actual use state. It can be made to adhere to, and the fall of translucent cover 30 after construction can be excluded. Therefore, the translucent cover 30 is fixed to the instrument main body 20 by enabling non-mechanical fixing such as elastic engagement until the reflecting plate 40 is fixed to the instrument main body 20. The effect of reducing the number of parts and assembly man-hours can be obtained.

  By providing an appropriate distance between the LED 50 and the reflective plate 40 that has been subjected to the reflection treatment, and arranging the side surface portion 41 of the reflective plate 40 to be substantially vertical, the light emitted from the LED 50 to the reflective plate 40 in the product inner direction is It becomes the reflected light in the lateral direction, and the light directly under the illumination device 10 can be dispersed.

  A lighting device in which a light-emitting unit that is arranged in two rows apart from the instrument body 20 is a light-emitting diode (LED 50) and a power source device 70 that drives the light source unit are arranged between the light source units that are arranged in two rows. 10, a light-transmitting cover 30 capable of transmitting light arranged in two rows on the instrument main body 20 so as to cover the light source unit, and a reflective material that covers the power supply device 70 detachably attached to the instrument main body 20. A reflection plate 40, the outer surface of the reflection plate 40 being adjacent to a part of the outer surface of the translucent cover 30, and the light transmitted through the translucent cover 30 with the light emitted from the light source unit toward the reflection plate 40. The lighting device 10 is characterized in that it is reflected by the reflecting plate 40 and returned to the translucent cover 30 and used as light in the lateral direction with respect to the ceiling 90 surface. To the horizontal direction) Sufficient to higher uniformity of the spread of light, it is possible to provide an illumination apparatus 10 can be felt higher the overall brightness of the room may illuminate the ceiling 90 side.

  The light toward the inner side of the lighting device 10 is irradiated toward the outer side of the lighting device 10 using the reflection on the reflector 40, and the LED 50 substrate on which the LED 50 that is a light source is mounted is arranged obliquely in the outer direction of the lighting device 10. By reducing the overlap of light near the lighting device 10, the spread of light in the lateral direction (horizontal direction) is sufficiently ensured with respect to the ceiling 90 surface, and the uniformity is high, so that the irradiation on the ceiling 90 surface is possible. It becomes possible to provide the lighting device 10 that can feel the brightness of the entire room high.

  Although the light source has been indicated by the LED 50, the light source may be an organic EL.

DESCRIPTION OF SYMBOLS 10 Lighting apparatus 20 Instrument main body 21 Bottom part 22 of instrument main body 20 End part 23 of instrument main body 20 Standing part 24 of instrument main body 20 Recessed part 30 formed in upright part 23 Translucent cover 31 Support part 32 of translucent cover 30 Translucent Light emitting portion 33 of cover 30 Return portion 34 of translucent cover 30 Holding portion 35 of translucent cover 30 Groove portion 36 formed in support portion 31 Convex portion 40 formed in return portion 33 Reflector 41 as a reflector 41 Reflector 41 of reflector 40 Side part 42 Bottom bent part 50 of reflector 40 LED
52 Light 52 ′ irradiated from the LED 50 in the direction of the light emitting unit 32 Light 53 after the light 52 has transmitted through the light emitting unit 32 53 Light 53 ′ irradiated from the LED 50 in the direction of the returning unit 33 transmitted through the return unit 33 After the light 53 ″ The light 54 ′ after the light 53 ′ has passed through the light emitting part 32. The diffused light 56 guided by the light emitting part 32. The irradiation range of the LED 50 (inside)
57 LED50 irradiation range (outside)
60 Light source board 70 Power supply device 72 Power supply terminal block 74 End plate 80 Mounting member (screw, fastener, etc.)
90 Ceiling

Claims (2)

An instrument body, a light source unit composed of light emitting diodes spaced apart from the instrument body in two rows, a power supply device disposed between the light source units spaced in two rows and driving the light source unit, and two rows A light-transmitting cover provided so as to cover each of the light source units that are spaced apart from each other,
A reflection plate covering the power supply device;
The translucent cover is provided in a state of being provided so as to cover the light source part, and is provided in a side part direction of the light source part, and includes a return part through which a part of light from the light source part is transmitted ,
The lighting device according to claim 1, wherein an outer side surface of the reflecting plate is arranged so as to be substantially vertical to the instrument body and adjacent to a return portion of the translucent cover.   The lighting device according to claim 1, wherein the light source unit is disposed so as to be inclined with respect to the fixture body so as to face the outside direction of the lighting device.