JP5599283B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture that is used by being attached to a mounting surface such as a ceiling surface using an LED.

Conventionally, the lighting fixture attached to a ceiling surface is known (for example, refer patent document 1).
As illustrated in FIG. 14, a lighting fixture 100 described in Patent Literature 1 is attached to a ceiling surface 101 to illuminate a room or the like.
The luminaire 100 has a cover 103 that covers a fluorescent lamp 102 that is a light source attached to a fixture body 104. The cover 103 includes three parts, a lower cover 106, an upper cover 107, and a panel 105 having a reflective effect. did.
The transmittance to the lower surface of the lower cover 106 that transmits light downward is lower than the other portions, and the upper cover 107 that transmits the light of the fluorescent lamp 102 laterally has a higher transmittance than the lower surface. In addition, a reflective panel 105 is provided in order to irradiate downward light emitted from the fluorescent lamp 102 sideways.

  Thereby, since the transmittance to the lower surface of the cover 103 is lowered from the upper surface, the ceiling can be illuminated brightly, and the entire space can be illuminated uniformly without feeling the glare directly into the eyes.

JP 2002-140910 A (FIG. 1)

By the way, in the lighting fixture attached to the ceiling surface as described above, when an LED unit is used as a light source, the back side of the LED unit (that is, the attached surface side) emits light, so that the back side of the lighting fixture is dark. was there.
Thus, for example, it is conceivable to form an indirect light by arranging an auxiliary light source toward the attached surface side.
However, in order to provide the auxiliary light source, a space for the auxiliary light source is required, which is a problem that is contrary to the thinning of the lighting fixture.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a luminaire that can increase the feeling of brightness by illuminating the back side of the luminaire without impairing the thinning of the luminaire. .

The lighting fixture of the present invention includes an upper main body portion that is attached to a surface to be attached, a lower main body portion that is attached to the lower side of the upper main body portion and that is attached with an LED unit that is a light source, and a lower side of the lower main body portion. A cover member that is detachably attached, and has a planar size of the lower body portion larger than a planar size of the upper body portion, and protrudes outward from the upper body portion in the lower body portion. A unit mounting that attaches the LED unit by providing an opening in the part facing the mounting surface, providing a pair of linear slits at a predetermined position of the lower main body, and pushing the space between the slits to the lower surface of the lower main body A stand is provided .

  Moreover, the lighting fixture of this invention covers the said opening part with the transparent panel.

  Moreover, the luminaire of the present invention is such that at least the surface on the attached surface side of the lower main body portion has a white color.

  Furthermore, in the lighting fixture of the present invention, at least the cover member side surface of the LED unit has a white color.

  In the present invention, since the planar size of the lower main body part to which the LED unit as the light source is attached is larger than the planar dimension of the upper main body part attached to the mounted surface, the lower main body There is a space between the portion of the portion protruding outward from the upper main body portion and the mounted surface. Since the opening is provided in the lower main body protruding outward from the upper main body, by irradiating a part of the light from the LED unit from the opening to the attached surface without providing a separate light source, The mounting surface can be irradiated with indirect light, and a lighting fixture having an effect that the lighting fixture can be made thin can be provided.

The perspective view which looked at the lighting fixture of embodiment which concerns on this invention from the downward direction Sectional view at II-II position in FIG. The disassembled perspective view of the lighting fixture of embodiment which concerns on this invention Explanatory drawing showing the state of heat dissipation in the lower body (A) is explanatory drawing which shows the thermal radiation part of the power supply unit in a lower main body part back surface, (B) is explanatory drawing which shows the thermal radiation part of the LED unit in a lower main body part lower surface (A) is the perspective view of the unit mounting base in VI part in FIG. 4, (B) is the side view seen from the B direction in (A). (A) is sectional drawing of the LED package which does not attach a condensing lens, (B) is explanatory drawing which shows the feeling of light (A) is sectional drawing of the LED package which attached the condensing lens, (B) is explanatory drawing which shows the feeling of light Explanatory drawing which shows the distance of the cover and LED unit of a cover member (A) is sectional drawing of the lighting fixture which shows the course of the light which LED unit emitted, (B) is the perspective view which looked at the lighting fixture from the upper direction (A) is explanatory drawing which shows the course of the light emitted from the LED package using a condensing lens, (B) is explanatory drawing which shows the course of the light emitted from the LED package which does not use a condensing lens. Explanatory drawing which shows the course of the light between an upper main-body part and a cover. An exploded perspective view showing the case where the condenser lens is arranged in the short direction near the center of the lower main body in the longitudinal direction (A) is a partially broken front view of a conventional lighting fixture, (B) is an explanatory view of a panel having a reflective effect

Hereinafter, the lighting fixture of embodiment which concerns on this invention is demonstrated using drawing.
As shown in FIG. 1, the lighting fixture 10 of embodiment which concerns on this invention is attached to the ceiling surface 11 which is a to-be-attached surface, and mainly illuminates the downward direction.
In addition, as shown in FIG. 2, the ceiling locking tool for attaching the lighting fixture 10 simply is attached to the attachment position of the lighting fixture 10 in the ceiling surface 11. In the following description, a case where the hook ceiling 13 is used as a ceiling locking tool will be described, but the same applies to a hook rosette.

  As shown in FIGS. 2 and 3, the lighting fixture 10 includes a fixture main body 12 including an upper main body portion 20 attached to the ceiling surface 11 and a lower main body portion 30 attached to the lower side of the upper main body portion 20. The cover member 40 is attached to the lower side of the lower main body 30.

The upper main body 20 can be made of a metal having good thermal conductivity, for example, SGCC (hot dip galvanized steel sheet).
As shown in FIG. 3, the upper main body 20 includes a rectangular plate-shaped top plate 21, longitudinal longitudinal walls 22, 22 formed by being bent along the periphery of the top plate 21, and longitudinal lengths in the lateral direction. Walls 23 are provided. Thereby, it has the internal space 27 and is exhibiting the rectangular box shape opened downward (opening part 24).
The upper main body 20 desirably has better thermal conductivity than the substrate 51 on which the LED unit 50 described later is mounted. Further, it is desirable that the inner surface of the upper main body portion 20 is painted in a white color to reflect light.

  At the center of the top plate 21, an opening is provided, and a hook sealing plug 25 attached to the hook ceiling 13 attached to the ceiling surface 11 is attached. A plurality of (for example, three) packings 26 that are cushioning materials between the top plate 21 and the ceiling surface 11 are attached to the top surface of the top plate 21.

  As shown in FIG. 4, the lower main body 30 is attached to the lower side of the upper main body 20 to constitute the instrument main body 12. The planar size of the lower main body portion 30 is larger than the planar size of the upper main body portion 20, and the outer peripheral portion of the lower main body portion 30 protrudes to the outside of the upper main body portion 20 while being connected to the upper main body portion 20 ( Overhang 313).

As shown in FIG. 3, the lower main body portion 30 has a base portion 31 made of metal (for example, SGCC) and has a rectangular plate shape. LED unit 50 is attached via a heat dissipation sheet 32. Details of the LED unit 50 will be described later.
Therefore, as shown in FIG. 4, the heat generated by the LED unit 50 or the like is dissipated in the vertical direction from the overhanging portion 313 of the metal base portion 31 of the lower main body portion 30 (see the arrow in FIG. 4). Therefore, the heat dissipation of the lower main body 30 is improved.

As shown in FIG. 3, an opening 33 is provided at the center of the base portion 31 so that the hooking sealing plug 25 of the upper main body portion 20 can protrude. Thereby, thickness reduction of the instrument main body 12 is aimed at.
On the lower surface 311 of the base portion 31, a light receiving portion 34 that receives an infrared signal from a remote control device (not shown) is attached via a light receiving portion mounting base 341 at the center in the width direction (short direction). .

  Further, a power supply unit housing box 35 that houses the power supply unit 351 and a control block 36 that controls the output of the LED unit 50 are attached to the upper surface 312 of the base portion 31. Here, two power supply unit accommodation boxes 35 are provided (only one is shown in FIG. 3). The power supply unit accommodation box 35 is made of metal (for example, SGCC).

Therefore, in a state where the upper main body portion 20 and the lower main body portion 30 are joined, the power supply unit accommodation box 35 and the control block 36 are accommodated in the internal space 27 of the upper main body portion 20. For this reason, since the upper main body part 20 and the lower main body part 30 are separately manufactured and assembled, the assemblability is improved.
The control block 36 is connected to the light receiving unit 34 and controls the light output of the LED unit 50 based on the data received by the light receiving unit 34.

  Therefore, as shown in FIG. 5A, the upper surface 312 of the base portion 31 of the lower main body portion 30 to which the power supply unit 351 is attached has a central portion in the width direction on the upper surface 312 of the base portion 31. It becomes a heat radiating part of heat generated (indicated by hatching in FIG. 5A). That is, in this part, since the LED unit 50 is not provided on the lower surface 311, the influence of the heat generated by the LED unit 50 is small, so that heat can be radiated effectively.

Further, as shown in FIG. 5B, on the lower surface of the lower main body portion 30 to which the LED unit 50 is attached, both widthwise outer side portions of the lower surface 311 of the base portion 31 are heat radiating portions generated by the LED unit 50. (Indicated by hatching in FIG. 5B). That is, in this portion, since the power supply unit 351 is not provided on the upper surface 312, the influence of heat generation of the power supply unit 351 is small, so that heat can be radiated effectively.
Thereby, the heat dissipation of the base part 31 of the lower main body part 30 is effectively utilized.

As shown in FIG. 6A, a unit mounting base 37 for mounting the LED unit 50 is provided on the base portion 31 of the lower main body portion 30. The mounting base 37 is formed in a reverse trapezoidal shape by providing a pair of straight slits 371 at predetermined positions of the base portion 31 and pushing the space between the slits 371 toward the lower surface 311 side of the lower main body portion.
Accordingly, an opening 314 is formed in the base portion 31.

The unit mounting base 37 has a pair of inclined surfaces 372 and a horizontal mounting surface 373 that connects the lower ends of both inclined surfaces 372, and the mounting surface 373 is provided with a screw hole 374 for mounting the LED unit 50. ing.
Therefore, the LED unit 50 is attached to the screw hole 374 of the attachment surface 373 of the unit attachment base 37 with the screw 375.
As shown in FIG. 6B, the opening 314 of the base 31 is covered with a transparent panel 38 on the upper surface 312 side.

As shown in FIG. 3, a plurality of (here, six) LED units 50 are attached to the lower surface 311 of the base portion 31 of the lower main body portion 30.
As shown in FIG. 7A, in the LED unit 50, an LED chip 52 is mounted on a square substrate 51, and a lens 53 is provided in front of the LED chip 52 to constitute an LED package 54A. In the LED package 54 </ b> A, as shown in FIG. 7B, there is no feeling that the light is concentrated in the center, and the whole LED is irradiated.

Also, as shown in FIG. 8A, a condensing lens 55 is attached in front of the LED chip 52 and the lens 53 in the LED package 54A to constitute the LED package 54B. In the LED package 54B, as shown in FIG. 8B, it is felt that the light is concentrated on the center side.
The LED package 54A and the LED package 54B are collectively referred to as the LED package 54. Further, it is desirable to coat the surface of the substrate 51 with a white color.

  As shown in FIGS. 2 and 3, among the nine LED packages 54 provided in the LED unit 50 attached to the lower main body portion 30, three of the nine LED packages 54 closer to the center of the lower main body portion 30 are gathered. The LED package 54B with the light lens 55 is disposed, and the LED package 54A to which the condenser lens 55 is not attached is disposed in the other six packages.

  As shown in FIGS. 1 and 3, the cover member 40 has an overall rectangular box shape opened upward, and a mounting cover 41 made of, for example, ABS (Acrylonitrile Butadiene Styrene) is formed along the longitudinal direction at the center in the width direction. Is provided. The mounting cover 41 includes a planar mounting cover main body 411 exposed downward, and a vertical wall 412 formed upward from both outer sides in the width direction of the mounting cover main body 411.

The mounting cover 41 is opaque so as to hide the mounting portion such as the hooking sealing plug 25, and a receiving window 413 for receiving an infrared signal is provided in front of the light receiving portion 34 in the mounting cover main body 411. Is provided.
The inner surface of the mounting cover 41 facing the LED unit 50 is preferably painted with a white color to reflect light.

  A cover 42 with good translucency made of acrylic, for example, is provided along both outer sides in the width direction of the mounting cover 41. In the cover 42, an inner wall 421 is formed upward at an end portion in contact with the mounting cover 41, and an outer wall 422 is formed upward at an outer end portion in the width direction.

As shown in FIG. 9, the cover 42 of the cover member 40 is configured to approach the LED package 54 of the LED unit 50 as it moves away from the center of the instrument body 12.
That is, when the distance D from the center of the instrument body 12 to the LED package 54 is D1 <D2 <D3, the cover 42 is set such that the distance H between the LED package 54 and the cover 42 is H1>H2> H3. Is attached at an angle.

As shown in FIGS. 1 and 3, cover mounting bases 43 made of sheet metal are provided at both ends in the longitudinal direction of the mounting cover 41 and the cover 42. The cover mounting base 43 can be formed of SGCC, for example. In addition, from the viewpoint of improving the appearance and enhancing the heat dissipation, it is desirable to coat the inner and outer surfaces with a white color.
Therefore, the cover member 40 is configured by attaching the covers 42 to both outer sides in the width direction of the attachment cover 41 and attaching the cover attachment bases 43 to both ends in the longitudinal direction.

Next, the path of light emitted from the LED unit 50 will be described.
As shown in FIG. 10, the light L1 emitted from the LED unit 50 passes through the cover 42 of the cover member 40 and is irradiated downward.
At this time, when an LED package 54B with a condensing lens 55 is provided as the LED package 54 near the center of the lower main body 30, most of the LED package 54 is irradiated downward as shown in FIG. , A part is emitted to the side, reflected by the inner wall 421 of the cover 42 and irradiated downward.

  As shown in FIG. 11B, when the LED package 54A to which the condenser lens 55 is not attached is arranged from the center of the lower main body 30, the case of the LED package 54B (FIG. Compared to A), the amount of light directed to the side is increased, and the loss of the light L1 irradiated downward is increased.

Also, as shown in FIG. 12, a part of the light L1 emitted from the LED unit 50 is repeatedly reflected between the inner surface 423 of the cover 42 and the lower surface 311 of the base portion 31 and moves outward. The base part 31 reaches the overhang part 313. The overhanging portion 313 is also provided with a unit mounting base 37, and light L3 leaks upward from the base portion 31 through the opening 314 provided in the unit mounting base 37 to illuminate the ceiling surface 11 (FIG. 10 (A)).
At this time, part of the light L4 is reflected by the vertical walls 22 and 23 of the upper main body 20 and travels toward the ceiling surface 11 (see FIG. 10).
Accordingly, the lights L3 and L4 leak from the opening 314 of the base 31 and illuminate the ceiling surface 11 slightly.

As described above, according to the lighting fixture 10 of the embodiment according to the present invention described above, the lower main body portion 30 to which the LED unit 50 as the light source is attached is attached via the upper main body portion 20 attached to the ceiling surface 11. The unit 50 can be mounted away from the ceiling surface 11, and the heat generated by the LED unit 50 can be efficiently radiated in the vertical direction (see FIG. 4).
In addition, since the planar size of the lower body part 30 is larger than the planar size of the upper body part 20, the protruding part 313 projects from the upper body part 20 in the lower body part 30. For this reason, heat can also be generated from the upper surface 312 of the base portion 31 of the lower main body 30 and the heat generation area is increased, so that the heat generation efficiency is improved (see FIG. 4). Thereby, it can prevent that the lifetime of the LED unit 50 becomes short with a heat | fever.
Moreover, since the lower main body part 30 is large, the lighting fixture 10 looks thin visually.

In addition, since the LED unit 50 is attached to the base portion 31 that is closest to the upper main body portion 20 in the lower main body portion 30, the heat generated by the LED unit 50 is transmitted to the base portion 31, via the base portion 31. Heat can be effectively dissipated.
Moreover, since it can irradiate with the light output of LED unit 50 directly, without using a reflecting plate or a light-guide plate, the lighting fixture 10 can be reduced in size and thickness.

In addition, since the power supply unit storage box 35 that stores the power supply unit 351 that turns on the LED unit 50 is attached to the lower main body 30 and is stored in the upper main body 20, the upper main body 20 has unevenness for mounting. Therefore, it is possible to make the lighting fixture 10 appear thin.
Further, since the power supply unit 351 is arranged away from the upper main body portion 20, it is less likely to be affected by the heat of the LED unit 50.
Further, the heat generated by the power supply unit 351 can be radiated through the lower main body 30.
Moreover, by arranging the power supply unit accommodation boxes 35 uniformly from the center, it becomes easy to balance the weight and the connection line with the commercial power supply can be shortened.

  Furthermore, since the upper main body 20 is made of a material having better thermal conductivity than the substrate 51 on which the LED unit 50 is mounted, the heat dissipation effect can be enhanced.

Moreover, according to the lighting fixture 10 of this invention, the lower main body to which the LED unit 50 which is a light source is attached while being attached to the lower side of the upper main body part 20 rather than the planar dimension of the upper main body part 20 attached to the ceiling surface 11. Since the planar dimension of the portion 30 is increased, a space is formed between the projecting portion 313 projecting outward from the upper main body portion 20 in the lower main body portion 30 and the ceiling surface 11. The overhanging portion 313 is provided with an opening 314. By irradiating a part of the light from the LED unit 50 from the opening 314 to the ceiling surface 11 side, an indirect light can be used without providing a separate light source. The ceiling surface 11 can be irradiated, and the luminaire 10 can be made thin (see FIG. 10).
Moreover, since the lower main body part 30 protrudes outside from the upper main body part 20, the heat radiation efficiency can be improved (see FIG. 4).
Furthermore, heat dissipation efficiency can be improved by dissipating heat through the opening 314.

Further, since a pair of straight slits 371 are provided at predetermined positions of the lower main body 30 and a unit mounting base 37 for attaching the LED unit 50 by pushing the space between the slits 371 toward the lower surface of the lower main body 30 is provided. An opening 314 can be provided at the base of the mounting base 37 (see FIG. 6A).
Further, since the LED unit 50 is attached to the lower main body 30 via the unit mounting base 37, an appropriate space can be provided between the LED unit 50 and the lower main body 30 without using another component.

In addition, since the opening 314 is covered with the transparent panel 38, insects and dust can be prevented from entering while light is transmitted (see FIG. 6B).
Moreover, the brightness and color tone which illuminate the ceiling surface 11 can be adjusted by the transmittance and coloring of the transparent panel 38, and various atmospheres can be created.

  Moreover, since the upper surface 312 which is the surface by the side of the ceiling surface 11 of the base part 31 of the lower main body part 30 was made into the white color, reflection of light was repeated between the ceiling surface 11 and the lower main body part 30, The indirect light irradiation range can be expanded.

  Furthermore, since the surface on the lower main body 30 side of the LED unit 50 is a white color, reflection of light is repeated between the LED unit 50 and the inner surface 423 of the cover 42 of the cover member 40, and indirect light The irradiation range can be expanded.

Moreover, according to the lighting fixture 10 of the present invention, the condenser lens 55 is attached to the LED package 54 (54A) located near the center of the fixture body 12 among the LED packages 54 provided in the LED unit 50. The light distribution near the center becomes a narrow angle, and sufficient direct illumination can be obtained (see FIG. 3).
In addition, since a brighter light can be gathered closer to the center than the surrounding area, the feeling of brightness is improved.

In addition, since the light-impermeable mounting cover 41 is provided between the hooking sealing plug 25 attached to the center of the fixture body 12 and the LED unit 50, the LED unit is directly attached when the lighting fixture 10 is attached or removed. 50 can be prevented (see FIG. 3).
Further, it is possible to prevent light noise from entering from the LED unit 50 to the light receiving part 34 provided inside the mounting cover 41.

  In addition, since at least the side surface of the LED unit 50 of the mounting cover 41 is a reflecting surface, the amount of light in the downward direction can be increased by reflecting the light toward the mounting cover 41 out of the light output near the center (FIG. 11). reference).

Furthermore, since the cover member 40 approaches the LED unit 50 as it moves away from the center of the instrument body 12, the illuminance of the cover 42 on the outer side is approximately equal to the illuminance of light that has passed through the condenser lens 55 near the center. It becomes uniform and the whole cover 42 becomes uniform brightness. Thereby, it can prevent giving a user discomfort (refer FIG. 9).
Moreover, since the outer part of the cover 42 becomes thin, the whole lighting fixture looks thin, and a feeling of pressure is lost.

In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible.
For example, in the above-described embodiment, the case where the opening 314 is provided when the unit mounting base 37 is provided on the base 31 of the lower main body 30 is illustrated. However, light is leaked to the outside separately from the unit mounting base. An opening can be provided in the base portion 31 just for this purpose.

  In the above-described embodiment, the case where the LED package 54A in which the condenser lens 55 is attached to the LED package 54 near the center in the width direction of the base portion 31 is illustrated (see FIG. 3). As described above, it is also possible to use the LED package 54A in which the condenser lens 55 is attached to the LED package 54 near the center in the longitudinal direction of the base portion 31.

10 Lighting equipment 11 Ceiling surface (attached surface)
20 Upper body portion 30 Lower body portion 311 Lower surface 312 Upper surface (surface on the mounting surface side)
313 Overhang (part facing the mounting surface)
314 Opening 37 Unit mounting base 371 Slit 38 Transparent panel 40 Cover member 50 LED unit 51 Substrate (cover member side surface)

Claims (4)

An upper main body attached to the surface to be attached;
A lower main body part attached to the lower side of the upper main body part, to which an LED unit as a light source is attached,
A cover member detachably attached to the lower side of the lower main body part,
Forming the plane size of the lower body part larger than the plane size of the upper body part , and providing an opening in the lower body part that protrudes outward from the upper body part and faces the mounted surface ;
A lighting fixture provided with a pair of straight slits at predetermined positions of the lower main body, and a unit mounting base for attaching the LED unit by pushing the space between the slits toward the lower surface of the lower main body . The lighting fixture according to claim 1 ,
A lighting fixture in which the opening is covered with a transparent panel. The lighting fixture according to claim 1 or 2 ,
A lighting fixture in which at least the surface of the attached surface of the lower main body is a white color. In the lighting fixture of any one of Claims 1 thru | or 3 ,
The lighting fixture whose surface by the side of the said cover member of the said LED unit is a white color.