JP5042381B2 - LED unit for lighting equipment - Google Patents

Description

  The present invention relates to a luminaire used for a downlight that is embedded in a ceiling surface of a house or the like and illuminates a corridor, a wall, or the like, and more particularly to a built-in LED unit and luminaire.

  As an example of a conventional LED unit and lighting fixture, an LED unit that reduces glare by setting a light shielding angle without using a louver by adjusting the resin surface depth of a phosphor layer covering an LED light source And a lighting fixture (see, for example, Patent Document 1).

JP 2008-166185 A (FIG. 1, claim 1)

In general, it is known to use a glare cut plate in a lighting fixture in order to reduce glare, which is a phenomenon that is difficult to see due to excessive glare. Such a glare cut plate is provided in the irradiation direction from the end face of the instrument, so that the light flying in the set glare cut angle direction is blocked by the glare cut plate to reduce the glare.
However, the luminaire becomes larger by the size of the glare cut plate, and it is difficult to reduce the size of the luminaire.

On the other hand, in order to reduce glare, there is one in which the light source is located in the back of the lighting fixture. In such a lighting fixture, glare is reduced by blocking light flying in the direction of the glare cut angle in the main body.
However, an unnecessary space is generated in the lighting fixture, and it is difficult to reduce the size of the lighting fixture.

The conventional LED unit and lighting fixture disclosed in Patent Document 1 have been proposed in order to solve the above problems.
However, the structure is complicated because it requires a phosphor layer or reflector that is formed into a cap shape by dispersing, for example, a green phosphor, a yellow phosphor, or a red phosphor in a translucent silicon resin. Therefore, it has a new problem that it is not suitable for mass production.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lighting apparatus capable of reducing glare and reducing the size with a simple structure.

The LED unit for lighting fixtures concerning this invention is an LED unit for lighting fixtures provided with an LED light source and the optical member for controlling the light from the said LED light source, Comprising: The said optical member is transparent translucent as well as a member at its central portion, the the LED package accommodating recess for accommodating the LED light source, and emitting recess is formed on the exit side which is the opposite side, the exit than the depth dimension of the LED package accommodating recess The depth dimension of the concave portion is larger , and the radius of curvature of the convex curved surface on the LED package receiving concave portion side is formed larger than the radius of curvature of the convex curved surface on the outgoing concave portion side, and is convex curved lens section having a two-sided convex curved surface formed between the recess, the convex curved lens section, as the curvature of the surrounding neighborhood is smaller than its central portion Made is characterized in that is.

  According to the LED unit and the lighting fixture of the present invention, there is an effect that the glare can be reduced and the size can be reduced with a simple structure.

The vertical sectional view of the lighting fixture which applied the LED unit of a 1st embodiment concerning the present invention Vertical sectional view of the LED unit shown in FIG. The vertical sectional view of the LED unit in the lighting fixture of 2nd Embodiment concerning this invention The vertical sectional view of the LED unit in the lighting fixture of 3rd Embodiment concerning this invention The vertical sectional view of the LED unit in the lighting fixture of 4th Embodiment concerning this invention

  Hereinafter, LED units and lighting fixtures according to a plurality of embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIG. 1, a lighting fixture 100 equipped with the LED unit 10 according to the first embodiment of the present invention has a fixture main body 101 that is a cylindrical casing and a plurality of LED units 10, and the fixture main body 101. The lamp unit 102, the power supply unit 103, and the power supply terminal block 104 are installed in the mounting hole 2 formed in the ceiling surface 1 of a house or the like.

  The instrument body 101 is formed by press-molding a metal plate member or molding it using a hard resin material. The instrument main body 101 includes a partition plate 105, an upper peripheral plate 106 at the top of the partition plate 105, and a lower peripheral plate 107 at the bottom of the partition plate 105.

  The partition plate 105 is disposed at the center of the instrument main body 101. The partition plate 105 has a wiring hole 109 through which the instrument wiring 108 for supplying power from the power supply unit 103 to the lamp unit 102 is inserted.

  The upper peripheral plate 106 has a bracket 110 fixed to the upper end thereof with screws 111, and a power terminal block 104 is fixed to the bracket 110 outside the instrument body 101. The power supply terminal block 104 electrically connects a commercial power supplied from the outside to the power supply unit 103. The power supply unit 103 converts the commercial power supply into a DC power supply for the LED unit 10.

  A flange 112 is formed at the lower end of the lower peripheral plate 107. The flange 112 contacts the ceiling surface 1 to position the instrument body 101 on the ceiling surface 1.

  A plurality of mounting springs 113 are provided on the side of the lower peripheral plate 107. The attachment spring 113 is screwed to the ceiling surface 1.

  The LED unit 10 includes a base 11, a heat radiating member 12, an LED package 13 on which an LED chip 14 as an LED light source is mounted, and an LED substrate 15 on which a wiring pattern (not shown) on which a plurality of LED packages 13 are mounted is provided. The optical member 16 disposed on the optical axis of the LED chip 14 and the frame member 17 are provided.

  The base 11 is formed in a disk shape using a metal material such as ADC, and a cylindrical package base 18 is formed in a protruding manner at a position corresponding to the LED package 13.

  The heat dissipating member 12 functions as a heat sink and is formed in a plate shape having a plurality of protrusions using silicon as a material so as to have a large heat dissipating area. The heat dissipation member 12 is disposed between the base 11 and the LED substrate 15.

  In the LED package 13, one LED chip 14 is mounted at the center position of the LED substrate 15 and, for example, five LED chips 14 are mounted around the LED package 13.

  The optical member 16 is molded from a polycarbonate, which is a transparent light transmissive member. The optical member 16 is assembled in contact with the base 11.

  The frame member 17 is formed using a mechanical structural steel material such as SPCD as a raw material, and accommodates the base 11, the heat radiating member 12, the LED package 13, the LED substrate 15, and the optical member 16, and the instrument body 101 is attached to the partition plate 105.

  As shown in FIG. 2, the optical member 16 includes a central projecting portion 19 and a flat plate portion 20 having a flat surface portion 21 on the outer side and disposed at the bottom of the projecting portion 19.

  The optical member 16 has a projecting portion 19 formed in a substantially hemispherical shape. In the center portion, the light source housing portion 22 that is a concave light source housing portion from the top to the lower side in FIG. A concave exit recess 23 is formed upward in FIG. A convex curved lens portion 24 is formed between the LED package housing recess 22 and the exit recess 23. The LED package housing recess 22 and the exit recess 23 have the same inner diameter D1.

  The optical member 16 has the LED substrate 15 assembled on the protrusion 19 so that the LED chip 14 of the LED package 13 is accommodated in the LED package accommodating recess 22.

  The optical member 16 is arranged so that the convex curved lens portion 24 is positioned closer to the LED package 13 so that the depth dimension of the emission recess 23 is larger than the depth dimension of the LED package housing recess 22.

  Next, optical characteristics of the LED unit 10 will be described.

  The power supply unit 103 converts the commercial power supply into a DC power supply and supplies power to the LED unit 10, thereby emitting light from the LED chip 14.

The emitted light is diffused with a certain extent. Of the emitted light, glare creation light γ that creates glare is reflected by the LED package housing recess 22 and is incident on the convex curved lens portion 24, and is emitted from the convex curved lens portion 24 into the exit concave portion 23. At this time, the glare generating light γ is not emitted from the exit recess 23 to the outside, but is incident from the exit recess 23 into the flat plate portion 20, and then exits from the outer flat surface portion 21.
As a result, the glare-generating light γ is optically attenuated so as not to create unpleasant glare, and it is possible to provide the luminaire 10 capable of reducing glare and reducing the size with a simple structure. .

(Second Embodiment)
Next, the LED unit and lighting fixture of 2nd Embodiment of this invention are demonstrated. In the following embodiments, components that are the same as those in the first embodiment described above or functionally similar components are simplified or omitted by giving the same reference numerals or equivalent symbols in the drawings. To do.

  As shown in FIG. 3, the LED unit 30 mounted on the lighting fixture 120 according to the second embodiment of the present invention has an optical member 31 having a convex curved lens portion 32 in which the curvature in the vicinity of the periphery is set smaller than the central portion. Applied.

  The LED unit 30 and the lighting fixture 120 of 2nd Embodiment have the same effect as 1st Embodiment.

(Third embodiment)
Next, the LED unit and lighting fixture of 3rd Embodiment of this invention are demonstrated.

  As shown in FIG. 4, the LED unit 40 mounted on the luminaire 130 of the third embodiment of the present invention is a convex curved lens portion 42 set away from the flat surface portion 21 on the outer side toward the LED package 13 side. An optical member 41 having the above was applied.

  The LED unit 40 and the lighting fixture 130 of 3rd Embodiment have the same effect as 1st Embodiment.

(Fourth embodiment)
Next, the LED unit and lighting fixture of 4th Embodiment of this invention are demonstrated.

  As shown in FIG. 5, the LED unit 50 mounted on the lighting fixture 140 of the fourth embodiment of the present invention includes an LED package housing recess 52 and an exit recess 53 having an inner diameter D2 that is smaller than that of the first embodiment. An optical member 51 having the above was applied.

  The LED unit 50 and the lighting fixture 140 of 4th Embodiment have the same effect as 1st Embodiment.

  The LED package 13 and the LED substrate 15 used in each of the embodiments are not limited to those illustrated, and can be changed as appropriate.

100, 120, 130, 140 Lighting fixture 10, 30, 40, 50 LED unit 14 LED chip (LED light source)
16, 31, 41, 51 Optical member 21 Flat surface portion on outer side 23, 53 Output recess (recess)
24, 32, 42 Convex-curved lens section

Claims (1)

An LED light source;
An optical member for controlling light from the LED light source;
An LED unit for lighting equipment comprising:
The optical member, with a transparent light transmitting member, the at the center, and the LED package accommodating recess for accommodating the LED light source, and the emission on the emission side is a side opposite the recess is formed,
The depth dimension of the exit recess is larger than the depth dimension of the LED package housing recess, and the radius of curvature of the convex curved surface on the LED package housing recess side is larger than the radius of curvature of the convex curved surface on the exit recess side Is also formed large ,
A convex curved lens part having a double-sided convex curved surface is formed between the LED package housing concave part and the output concave part, and the convex curved lens part is formed so that the curvature in the vicinity of the periphery is smaller than the central part. The LED unit for lighting fixtures characterized by the above-mentioned.

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