JP6575620B2 - Lighting device - Google Patents

Description

  Embodiments described herein relate generally to a lighting device using a light emitting element such as a light emitting diode (hereinafter referred to as LED) as a light source.

  Recently, along with higher output and higher efficiency of LEDs, lighting devices that use LEDs as light sources and can be used indoors or outdoors can be expected. This illuminating device is obtained by mounting a plurality of LEDs on a substrate so as to obtain a predetermined brightness, and is used as, for example, a ceiling light for a general house attached to a ceiling surface or the like.

  In such an illuminating device, since the brightness of the LED as a light source is high and the directivity of emitted light is strong, the diffuser (sade) ) Is arranged.

JP 2009-117160 A

  However, with the diversification of lifestyles, the functions required of these lighting devices are not only to illuminate the surroundings brightly, but also to design light to enhance the production effect and increase the added value as a lighting device. Is desired.

  The present invention has been made in view of the above problems, and provides an illumination device having an illumination cover that can suppress glare and enhance a brilliant rendering effect, and can increase added value as a lighting device having design properties. For the purpose.

Lighting apparatus according to the embodiment of the present invention, body and; disposed on a portion of the irradiation surface side of the main body, a plurality of light emitting elements and the substrate mounted on the substantially annular; in the substrate facing the region white film and a non-white film region or outside the inner light-emitting element which can direct the KuToru BenQ material white film region and the white film is not been formed that is formed is mixed in the inner surface of the transparent substrate by a a first region, a region that does not face the substrate, have a second region where only the white film region is formed, it is disposed to cover the entire surface of the irradiation surface side of the body And a sede.

  According to the embodiment of the present invention, it is possible to provide an illumination cover and an illumination device that can increase added value as an illumination device that does not reduce the illuminance on the irradiation surface.

It is a perspective view which shows the illuminating device which concerns on embodiment of this invention. It is a disassembled perspective view which shows the illumination device. It is a schematic plan view which removes a cover member and a lighting device cover in the same illuminating device, and is seen from below. It is sectional drawing which shows the same lighting fixture. It is sectional drawing which expands and shows the A section in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5. In each drawing, the wiring connection relationship using lead wires or the like may be omitted. In addition, the same code | symbol is attached | subjected to the same part and the overlapping description is abbreviate | omitted.

  The lighting apparatus of the present embodiment is for a general house that is used by being attached to a hanging sealing body as a wiring apparatus installed on the apparatus mounting surface, and has a plurality of light emitting elements mounted on a substrate. The room is illuminated by light emitted from the section.

  1 to 4, the lighting fixture includes a main body 1, a light source portion 2, a transmission / refractive member 3, a lighting device 4, a lighting device cover 5, a mounting portion 6, and a shade 7. Moreover, the adapter A electrically and mechanically connected to the hooking sealing body Cb installed in the ceiling surface C as an instrument mounting surface is provided. Such a lighting fixture is formed in a round and circular appearance, and the front side is a light irradiation surface and the back side is a mounting surface to the ceiling surface C.

  The main body 1 is a chassis formed in a circular shape from a flat plate of a metal material such as a cold-rolled steel plate, and a circular opening 11 for disposing a mounting portion 6 described later is formed in a substantially central portion. Yes. Further, on the outer peripheral side of the flat portion 12 on the inner surface side to which the light source unit 2 is attached, a stepped portion 13 is formed toward the back side, and a bowl-shaped concave portion 14 is formed. Further, an elastic member 15 is provided on the back side of the main body 1.

  The light source unit 2 includes a substrate 21 and a plurality of light emitting elements 22 mounted on the substrate 21 (illustration of the light emitting elements 22 is omitted in FIG. 2). The substrate 21 is disposed so that four arc-shaped substrates 21 having a predetermined width dimension are connected to each other, and is formed in a substantially circle shape as a whole. That is, the substrate 21 formed in a substantially circle shape as a whole is composed of four divided substrates 21.

  By using the substrate 21 thus divided, it is possible to suppress the deformation of the substrate 21 by absorbing thermal contraction at the divided portion of the substrate 21. In addition, although it is preferable to use the board | substrate 21 divided | segmented into plurality, you may make it use the board | substrate of 1 sheet integrally formed in the substantially circle shape.

  The board | substrate 21 consists of a flat plate of the glass epoxy resin (FR-4) which is an insulating material, and the wiring pattern is formed with the copper foil on the surface side. Further, a white resist layer acting as a reflective layer is applied on the wiring pattern, that is, on the surface of the substrate 21. The material of the substrate 21 can be a ceramic material or a synthetic resin material when an insulating material is used. Furthermore, when it is made of metal, a metal base substrate in which an insulating layer is laminated on one surface of a base plate having good thermal conductivity such as aluminum and excellent heat dissipation can be applied.

  The light emitting element 22 is an LED, which is a surface mount type LED package. A plurality of LED packages are arranged along the circumferential direction of a plurality of circle-shaped substrates 21, that is, in a plurality of rows on a substantially circumference centered on the mounting portion 6, and in this embodiment, two rows on the inner and outer peripheral sides. Has been implemented. In addition, the LED package uses a light white color and a light bulb color, which are alternately arranged, and the adjacent light emitting elements 22 in each row are spaced at substantially equal intervals. It is arranged. Color adjustment is possible by adjusting the current flowing through the LED package of daylight white color and bulb color.

  In addition, the light emitting element 22a for nightlights is mounted on the specific board | substrate 21 (right side in FIG. 3). For this light emitting element 22a, the same LED package as that of the light bulb color in the main light source mounted in a circle shape is used. Thereby, the common use of the member is achieved.

  The light emitting elements 22 are not necessarily mounted in a plurality of rows. For example, you may make it mount in 1 row along the circumferential direction. The number of columns and the number of the light emitting elements 22 can be appropriately set according to a desired output.

  The LED package is roughly composed of an LED chip disposed in a main body formed of ceramics or synthetic resin, and a translucent resin for molding such as epoxy resin or silicone resin that seals the LED chip. It is configured. The LED chip is a blue LED chip that emits blue light. The translucent resin is mixed with a phosphor so that daylight white or light bulb color light can be emitted.

  In addition, LED may be made to mount an LED chip directly on the board | substrate 21, and you may make it mount a bullet-type LED, and a mounting system and a format are not exceptionally limited.

  The transmission refracting member 3 is the lens member 3 and is made of, for example, a transparent synthetic resin having insulation properties such as polycarbonate and acrylic resin, and has reinforced insulation performance. The light emitting elements 22 are integrally formed in a substantially circular shape along the arrangement of the light emitting elements 22, and are disposed so as to cover the entire surface of the substrate 21 including the light emitting elements 22.

  Further, the lens member 3 has two ridges in the circumferential direction facing the light emitting element 22 on the substantially circular inner peripheral side portion and the outer peripheral side portion, and the ridge portion 31 having a constant cross-sectional shape. It is formed continuously. A U-shaped groove 32 is continuously formed along the circumferential direction inside the protruding portion 31. Therefore, the U-shaped groove 32 is arranged to face the plurality of light-emitting elements 22, and the plurality of light-emitting elements 22 are accommodated and covered in the U-shaped groove 32. It is in a state.

  Further, a flat portion 33 extending in the width direction is formed from the protruding portions 31 so that the entire surface of the substrate 21 is covered.

  According to the lens member 3 configured in this way, as shown in FIG. 5, the light emitted from the plurality of light emitting elements 22 is diffused mainly by the protrusions 31 in the inner circumferential direction and the outer circumferential direction on the circumference. Radiated. That is, the light emitted from the light emitting element 22 is mainly transmitted and bent in the radial direction with the center of the circle where the light emitting element 22 is disposed as the origin.

  Therefore, it is possible to improve the uniformity of the irradiation light by the light emitted from the plurality of light emitting elements 22 by the lens member 3. Further, the graininess due to the luminance of each light emitting element 22 can be suppressed. In this case, it is desirable to set the light distribution angle by refraction to about 120 to 160 degrees.

  Further, since the lens member 3 is formed with a flat portion 33 so as to cover the entire surface of the substrate 21, the charging portion is covered and protected by the lens member 3 having reinforced insulation performance.

  The lens member 3 may not be integrally formed in a substantially circle shape. For example, corresponding to the divided substrates 21, the substrates 21 may be divided and formed. In this case, the plurality of light emitting elements 22 mounted on one substrate 21 are continuously covered with the lens member 3.

  Further, the transmission / refractive member 3 is not limited to the lens member 3, and a prism or the like may be applied to provide anisotropy of the irradiation range of the light emitting element 22.

  In the light source unit 2 configured as described above, as representatively shown in FIGS. 4 and 5, the substrate 21 is positioned around the mounting unit 6, and the mounting surface of the light emitting element 22 is the front side, that is, It is arranged so as to face the lower irradiation direction. Further, the substrate 21 is attached in surface contact so that the back surface side of the substrate 21 is in close contact with the flat portion 12 on the inner surface side of the main body 1. Specifically, the lens member 3 is overlapped from the front side of the substrate 21, and the lens member 3 is attached to the main body 1 by a fixing means such as a screw S, so that the substrate 21 is connected to the main body 1 and the lens member 3. It is sandwiched between and pressed and fixed. That is, the substrate 21 and the lens member 3 are fastened together by one screw S.

  Accordingly, the substrate 21 is thermally coupled to the main body 1 so that heat from the substrate 21 is conducted from the back surface side to the main body 1 and radiated. The surface contact between the substrate 21 and the main body 1 is not limited to the case where the entire surface of the substrate 21 is in contact with the main body 1. It may be a partial surface contact.

  In addition, since the flat portion 33 of the lens member 3 is in surface contact with the mounting surface side of the substrate 21, heat is transmitted from the mounting surface side of the substrate 21 to the lens member 3 and passes through the lens member 3. Heat can be dissipated. That is, heat can be radiated from the front side of the substrate 21.

  As shown in FIGS. 2 to 4, the lighting device 4 includes a circuit board 41 and circuit components 42 such as a control IC, a transformer, and a capacitor mounted on the circuit board 41. The circuit board 41 is formed in a substantially arc shape so as to surround the periphery of the mounting portion 6, and the adapter A side is electrically connected, and is connected to a commercial AC power source via the adapter A. Accordingly, the lighting device 4 receives this AC power supply, generates a DC output, supplies the DC output to the light emitting element 22 via the lead wire, and controls the light emitting element 22 to be turned on.

  Such a lighting device 4 is disposed between the attachment portion 6 and the light source portion 2, that is, the substrate 21.

  As shown in FIGS. 2 and 4, the lighting device cover 5 is formed in a substantially short cylindrical shape by a metal material such as a cold-rolled steel plate and is attached to the main body 1 so as to cover the lighting device 4. The side wall 51 is inclined so as to expand toward the back side, and an opening 53 is formed in the front wall 52 so as to correspond to the attachment portion 6. Therefore, a part of the light emitted from the light emitting element 22 is reflected to the front side by the side wall 51 and effectively used. In addition, an arcuate guide recess that is recessed toward the back surface is formed at the periphery of the opening 53.

  The attachment portion 6 is an adapter guide formed in a substantially cylindrical shape, and an engagement port 61 through which the adapter A is inserted and engaged is provided at the center portion of the adapter guide. The adapter guide is disposed corresponding to the opening 11 formed in the central portion of the main body 1. A base is formed on the outer periphery of the adapter guide so as to protrude from the outer periphery, and an electrical auxiliary component 62 such as an infrared remote control signal receiver or an illuminance sensor is disposed on the base. .

  Note that the attachment portion 6 is not necessarily a member referred to as an adapter guide or the like. For example, it may be an opening formed in the main body 1 or the like, and in essence, it means a member or a part that is opposed to the hooking sealing body Cb as a wiring device and to which the adapter A is engaged.

  The shade 7 has a light-transmitting film made of a resin sheet having a plurality of openings 71b formed on the inner surface of a transparent base material having a mirror surface, for example, a transparent base material having high transparency. . The transparent acrylic resin is a member having a high external transmittance including the internal transmittance and the surface (interface) of the acrylic resin, or a material having a high gloss transmission with the surface (interface) being an optical mirror surface. Things are desirable. That is, the transparent acrylic resin has a low diffusibility and is prism-processed so that the surface of the transparent acrylic resin can be seen through the shade 7 so that the surface is transparent. It doesn't matter.

  The translucent film 71a formed on the inner surface of the shade 7 is formed with a white film by, for example, silk screen printing. The plurality of openings 71b formed in the translucent film 71a are formed with a diameter of about 0.5 mm to 5 mm. If the opening 71b is smaller than 0.5 mm, the light passing through the opening 71b becomes weak in the state where the shade 7 is attached to the instrument body, or the light emitting element 22 is on a straight line connecting the viewpoint and the opening 71b. The ratio of existing will decrease. For this reason, it becomes difficult to obtain light that the light emitting element 22 glitters through the opening 71b. On the other hand, when the opening 71b is 5 mm or more, a plurality of light emitting elements 22 may be interposed from one opening 71b, so that a dazzling feeling is felt rather than a glittering feeling. Therefore, it is preferable that the opening 71b not subjected to silk printing is smaller than the light emitting element 22, and the opening diameter is optimally about 0.7 mm to 2 mm.

  In addition, the formation region of the opening 71b is formed in a range that covers at least the region facing the light emitting element 22 mounted along the circumferential direction of the circle-shaped substrate in the present embodiment. That is, the opening 71 b is not formed in the central region of the shade 7 that is the central region surrounded by the light emitting elements 22. In addition, large and small openings 71b formed in the circumferential direction of the shade 7 that covers a region facing the light emitting element 22 are randomly and densely formed. The ratio of the opening 71b to the light-transmitting film in the region where the opening 71b is formed is preferably 0.3 to 0.6%. If the opening 71b is less than 0.3%, the ratio that the light emitting element 22 does not exist on the straight line connecting the viewpoint and the opening 71b is increased, so that there are many openings 71b where the light cannot be felt, and the opening that glitters. The number of On the other hand, when the opening 71b exceeds 0.6%, the number of openings 71b that feel light is very large, and the number of openings 71b that do not feel light decreases. For this reason, the number of blinks is less than the glitter feeling felt by irregularly viewing blinking of the plurality of independent openings 71b by moving the viewpoint, and the possibility of feeling uncomfortable increases.

  Therefore, it can be said that the formation region of the opening 71b is preferably 0.3% to 0.6% with respect to the light-transmitting film. Further, the ratio of the opening 71b in the entire shade 7 in the present embodiment is about 0.5%, and when the opening 71b is not formed in the central region, the opening 71b in the entire shade 7 is 0. It is preferably about 4%.

  Note that the transmittance of the light-transmitting film on which the silk print of the shade 7 is formed is desirably 40 to 80% or less. In the present embodiment, the transmittance at a wavelength of 380 to 780 nm is formed to be about 60%. If the transmittance is 40% or less, the illuminance immediately below is low, the luminous flux is too low, and it becomes difficult to use as a lighting fixture. Conversely, when the transmittance is 80% or more, the illuminance directly below is high and the luminous flux is sufficient, and the light from the light emitting element 22 is efficiently irradiated onto the irradiation surface. However, since the luminance difference and illuminance difference between the opening 71b (light emitting surface luminance) and the translucent layer 71a region (background luminance) which is a silk print region are small, the light is shining brightly due to light leaking from many openings. The value effect cannot be satisfied.

  Thus, to provide a lighting fixture that maintains the illuminance necessary as a general lighting fixture and has a glittering feeling due to the light emitted from the light emitting element 22 that can be seen through the opening 71b of the transparent shade 7 that is not silk-printed. Must satisfy these conditions.

  Such a shade 7 is detachably attached to the outer peripheral edge of the main body 1 so as to cover the front side of the main body 1 including the light source section 2. Specifically, by rotating the shade 7, a cover mounting bracket (not shown) provided on the shade 7 is engaged with a shade receiving bracket 75 disposed in the recess 14 on the outer peripheral edge of the main body 1. Mounted.

  In addition, the structure formed so that the opening part 71b of the shade 7 and the translucent layer 71a may be mixed can adopt various structures, and is not limited to each specific structure. For example, it is possible to arrange the openings 71b in a regular arrangement. Furthermore, prism processing with a mirror-finished surface may be performed at a position facing the region where the opening 71b of the shade 7 is formed.

  The adapter A is electrically and mechanically connected to a hooking sealing body Cb installed on the ceiling surface C by a hooking blade provided on the upper surface side, and has a substantially cylindrical shape. Is provided so that it always protrudes to the outer peripheral side by a built-in spring. The locking portion A1 is immersed by operating a lever provided on the lower surface side. Further, a power cord for connecting to the lighting device 4 is led out from the adapter A, and is connected to the lighting device 4 via a connector (see FIG. 3).

  Next, the attachment state to the ceiling surface C of a lighting fixture is demonstrated with reference to FIG. First, the adapter A is electrically and mechanically connected to the hanging sealing body Cb installed on the ceiling surface C in advance. From this state, the fitting body 6 is pushed up by hand from below until the engaging portion 61 of the adapter A is securely engaged with the engaging port 61 of the adapter guide while the engaging portion 61 of the adapter guide as the mounting portion 6 is aligned with the adapter A. To install. Then, the shade 7 is attached to the main body 1. This attachment completion state is the state shown in FIG. 4, and at this time, the elastic member 15 is interposed in close contact between the ceiling surface C and the back side of the main body 1, and the lighting fixture is fixed to the ceiling surface C. Become.

  Further, when removing the luminaire, it can be removed by removing the shade 7 and operating the lever provided on the adapter A to disengage the engaging portion A1 of the adapter A.

  When power is supplied to the lighting device 4 in a state where the lighting fixture is attached to the ceiling surface C, the light emitting elements 22 are energized through the substrate 21 and the light emitting elements 22 are turned on. The light emitted from the light emitting element 22 is diffused in the radial direction by the lens member 3 continuously covering the plurality of light emitting elements 22 and is emitted to the front side. The light emitted to the front side is irradiated through the opening 71b of the shade 7 and the light transmitting layer 71a.

  When such irradiation light is looked up from below the illumination device, the light emitting element 22 is directly viewed through the opening 71b that is arranged in a straight line with the light emitting element 22, and thus strong light is felt. On the other hand, even when there is no light source on the straight line connecting the opening 71b and the viewpoint, the light of the light emitting element 22 is transmitted and refracted by the lens member 3, and slightly weak light can be felt. By interposing the lens member 3, the light from the light emitting element 22 can be directly viewed from various angles, so that the frequency and intensity of the brightness can be improved.

  According to such a configuration, if the viewpoint, the light emitting element 22, and the opening 71b are on a straight line, strong light, and the refracted light from the light emitting element 22 refracted by the lens member 3, the viewpoint, and the opening 71b are on a straight line. In other words, if there is no light with a brilliant feeling, and there is no refracted light from the light emitting element 22 and the light emitting element on a straight line connecting the viewpoint with the opening 71b, the opening 71b does not feel the shining light.

  In this way, even when looking up at the lighting device or when viewed from the side of the lighting device, the light emitting element 22 appears to shine brightly with strong point-like light and weak light. Since a portion that seems to shine clearly and a portion that does not feel shine are mixed, the glare caused by the light emitting element 22 is visually recognized. In addition, by moving the viewpoint, each area that feels shine changes the intensity of light, or by repeatedly blinking, and the viewing position changes, so that various places shine brightly and irregularly. A sparkling decoration effect can be obtained. Furthermore, the uniformity of the irradiated light can be improved by the light passing through the light transmitting layer 71a region. Further, in the present embodiment, by using the light emitting elements 22 having two different colors, the plurality of openings 71b appear to blink brightly with a mixture of white white light and light bulb color. Thereby, the effect which was further excellent in the design property can be acquired.

  On the other hand, the heat generated from the light emitting element 22 is effectively conducted to the main body 1 and is dissipated over a wide area because the back side of the substrate 21 is in surface contact with the main body 1. Further, since the step portion 13 is formed in the vicinity of the outer peripheral side of the substrate 21 along the outer periphery of the substrate 21, the heat radiation area can be increased by the step portion 13, and the heat dissipation effect at the outer peripheral portion of the main body 1. Can be increased. In addition, the step portion 13 can provide a reinforcing effect of the main body 1.

  In addition, since the lighting device 4 is disposed between the mounting portion 6 and the substrate 21, the lighting device 4 is reduced from being thermally affected by the substrate 21. This is because the heat of the substrate 21 is conducted toward the outer peripheral direction of the main body 1 and tends to be radiated.

  In addition, since the flat portion 33 in the lens member 3 is in surface contact with the mounting surface side of the substrate 21, heat can be radiated from the mounting surface side of the substrate 21 through the lens member 3 and also from the front surface side. Become. In this case, since the lens member 3 covers the entire surface of the substrate 21, the charging part is protected.

  As described above, according to the present embodiment, when looking up at the illumination device, the light is designed so that the light from the point light source shines brightly, so that the decoration effect is obtained and the production effect is enhanced. Become. Furthermore, the lighting fixture which can aim at the improvement of the uniformity of irradiated light by providing the lens member 3 which covers the light emitting element 22 continuously can be provided.

  The present invention is not limited to the configuration of each of the embodiments described above, and various modifications can be made without departing from the spirit of the invention.

DESCRIPTION OF SYMBOLS 1 ... Main body, 2 ... Light source part, 3 ... Transmission / refraction member (lens member), 4 ... Lighting apparatus, 5 ... Lighting apparatus cover, 6 ... Mounting part (adapter guide) 7 ... Sade, 71a ... translucent layer, 71b ... opening, 13 ... step, 21 ... substrate, 22 ... light emitting element (LED), 31 ... projection Strip, 33 ... Flat part, A ... Adapter, C ... Instrument mounting surface (ceiling surface), Cb ... Wiring instrument (hanging ceiling body)

Claims (1)

With the body;
A substrate disposed in a partial region on the irradiation surface side of the main body and on which a plurality of light emitting elements are mounted in a substantially annular shape ;
The substrate facing a region white film on the inner surface of the transparent base material is formed white film region and the white film or outside inner light emitting elements KuToru BenQ materials not been formed is capable direct non a first region and a white film region are mixed, the a substrate not facing regions, have a second region where only the white film region is formed, the entire surface of the irradiation surface side of the body A shade arranged to cover ;
An illumination device comprising: