JP2016058218A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture which keeps space recognition favorably, and which enables lighting for a long time by power storage part drive.SOLUTION: A lighting fixture 10 includes: a fixture body 12 fixed to a building material 11; a power source part 13 accommodated in the fixture body 12; a light source part 14 accommodated in the fixture body 12; and a light shield plate 17 orthogonal to an optical axis 16 of the light source part 14. In the light source part 14, color temperature of the light for emitting light is equal to or greater than 7000K. Also, the light shield plate 17 is arranged so as to shield light in a range H1 which is equal to or greater than 45 degrees with respect to the optical axis 16 of the light source part 14 with a light emitting point 15 of the light source part 14 being a starting point.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a luminaire in which a construction material is provided with a tool body, a light source unit is provided in the tool body, and the light source unit illuminates a room or a passage.

  Some lighting fixtures are directly attached to the ceiling of a living room, bedroom, entrance, etc., and are used as so-called ceiling lights that illuminate the entire room brightly and uniformly as the main lighting. Are known). A cold cathode fluorescent lamp is used as the main light source, and a light bulb color is used as the safety light (Patent Document 1).

Here, an orange bean bulb or a light bulb color LED (Light-emitting Diode) is generally used as a low light bulb color for a security light in a conventional lighting fixture. A color temperature of about 2000 to 2700 K (Kelvin) is usually used as a light bulb color of a security light.
Low illuminance refers to illuminance that ensures safe walking in time zones such as midnight and night. A security light is known as a lighting fixture that secures low illuminance.

JP 2008-10333 A

By the way, the low illuminance bulb color used for the security light has a low contrast and space recognition is suppressed. In addition, as shown in the visibility diagram shown in FIG. 3, the visibility in the short wavelength region decreases with age, so that the space recognition by the security light becomes more yellow.
In addition, since the light bulb color LED is configured by combining blue light and light obtained by wavelength-converting blue light, the ratio of the converted light increases as the color temperature decreases, and the efficiency decreases. For this reason, it is disadvantageous in terms of lighting time when power is limited such as driving of a battery (power storage unit).
In addition, the brightness of the light source of the security light enters the field of view even through the milky white cover, so it is relatively difficult to see the darkness.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a lighting apparatus that can appropriately maintain space recognition and can be lit for a long time by driving a power storage unit. .

  The lighting fixture of the present invention includes a fixture main body provided in a construction material, a light source portion provided in the fixture main body, and a light shielding plate orthogonal to the optical axis of the light source portion, the light source portion, The color temperature of the emitted light is 7000 K or more, and the light shielding plate shields light in a range of 45 degrees or less from the light emitting point of the light source unit with respect to the optical axis of the light source unit.

  Moreover, the lighting fixture of this invention is the fixture main body provided in the construction material, the 1st light source part which is provided in the said fixture main body, and irradiates light in the direction perpendicular | vertical with respect to the surface direction of the said construction material, The said fixture A second light source unit that is provided on the main body and irradiates light in a direction parallel to the surface direction of the construction material; and a translucent cover that covers the first light source unit, and the second light source unit includes: The light source has a color temperature of 7000 K or higher and a member that shields a range of 45 degrees or higher from the light emitting point of the second light source unit with respect to the optical axis of the second light source unit.

  According to the luminaire of the present invention, it is possible to provide a luminaire that keeps space recognition suitably and enables lighting for a long time by driving the power storage unit.

Sectional drawing which shows the lighting fixture of 1st Embodiment which concerns on this invention Sectional drawing which shows the lighting fixture of 2nd Embodiment which concerns on this invention Visibility diagram showing changes in visual spectral sensitivity characteristics with age

Hereinafter, the lighting fixture according to the embodiment will be described with reference to the drawings.
(First embodiment)
As shown in FIG. 1, the lighting fixture 10 includes a fixture main body 12 provided on the building material 11, a power supply portion 13 provided on the fixture main body 12, a light source portion 14 provided on the fixture main body 12, and a light source portion 14. And a light shielding plate 17 orthogonal to the optical axis 16.

The lighting fixture 10 includes a reflecting plate 21 that reflects light emitted from the light source unit 14, a matte panel 23 provided below the reflecting plate 21, and an auxiliary reflector 24 provided below the matting panel 23. It is preferable to comprise.
Furthermore, it is preferable that the lighting fixture 10 is provided with the electrical storage part (battery) 26 in the fixture main body 12 as an auxiliary power supply. By providing the power storage unit 26, power can be supplied from the power storage unit 26 to the light source unit 14 when the commercial power supply is shut off.

The construction material 11 is, for example, a member that forms a ceiling of a living room, bedroom, entrance, etc. of a house. Since the main body 12 is provided on the construction material 11, the luminaire 10 is used as a security light for a living room, bedroom, entrance, and the like.
As an example, the light source unit 14 is an LED having a color temperature of emitted light of 7000K or higher. The upper limit of the color temperature is preferably 12000K.

  The light emitted from the light source unit 14 is collected by the reflecting plate 21 to increase the brightness of the light. The light with increased brightness is condensed by the auxiliary reflector 24 through the transparent matte panel 23, and the condensed light is reflected by the light shielding plate 17.

The light shielding plate 17 is disposed so as to be orthogonal to the optical axis 16 of the light source unit 14 and has a range H1 of θ1 degrees or less starting from the light emitting point 15 of the light source unit 14 with respect to the optical axis 16 of the light source unit 14. Is formed so as to be shielded from light. θ1 degree is 45 degrees or less.
The construction material in which the light 29 reflected by the light shielding plate 17 (that is, the light 29 reflected by the light shielding plate 17) is guided to the outside from the space 28 between the device main body 12 and the light shielding plate 17, and the device main body 12 is installed. 11 Illuminate the interior by illuminating the mounting surface, forming a pseudo light source with a low luminance and a large light emitting surface.

By using the light shielding plate 17 to shield the light emitted from the light source unit 14 within a range H1 of 45 degrees or less, the light source unit 14 can be made difficult to enter the field of view. Therefore, it is possible to suppress a phenomenon in which the low-luminance portion is dazzled and looks dark due to the high-luminance light source unit 14.
Thereby, space recognition can be maintained suitably, for example, the role as a nighttime security light can fully be fulfilled.

Moreover, by making the light source part 14 with high brightness difficult to enter the field of view, the awakening effect can be suppressed, and drowsiness can be prevented from being disturbed in a late-night toilet or the like.
Furthermore, by setting the color temperature of the light source unit 14 to 7000 K or higher, light in a high wavelength region is emitted. Thereby, the fall of the visual sensitivity accompanying an aging can be suppressed.
In addition, by setting the color temperature of the light source unit 14 to 7000 K or more, light that is easily visible from the light source unit 14 can be efficiently emitted with less power.

By emitting light from the light source unit 14 with a small amount of electric power, it is possible to turn on the power storage unit 26 for a long time when the commercial power supply is cut off.
In addition, although the example provided with the electrical storage part 26 as auxiliary power supply was demonstrated in the lighting fixture 10 of 1st Embodiment, it is also possible not to provide the electrical storage part 26. FIG. Even in this case, it is possible to save energy by efficiently emitting light that is easily visible from the light source unit 14 with less power.

  As described above, the lighting fixture 10 includes the fixture main body 12 fixed to the construction material 11, the power source portion 13 accommodated in the fixture main body 12, the light source portion 14 accommodated in the fixture main body 12, and the light source portion 14. And a light shielding plate 17 orthogonal to the optical axis 16. The light source unit 14 has a color temperature of emitted light of 7000K or higher. Further, the light shielding plate 17 is arranged so as to shield light in a range of 45 degrees or less from the light emitting point 15 of the light source unit 14 with respect to the optical axis 16 of the light source unit 14.

Next, a second embodiment will be described with reference to FIG.
(Second Embodiment)
As shown in FIG. 2, the lighting fixture 30 includes a fixture main body 32 provided in the building material 31, a power supply portion 33 provided in the fixture main body 32, a first light source portion 34 and a second light source portion provided in the fixture main body 32. 36 and a translucent cover 41 that covers the first light source unit 34.
The first light source unit 34 and the second light source unit 36 are preferably light sources that are lit exclusively.
Furthermore, it is preferable that the lighting fixture 30 is equipped with the electrical storage part (battery) 45 in the fixture main body 12 as an auxiliary power supply. By providing the power storage unit 26, power can be supplied from the power storage unit 45 to the first light source unit 34 and the second light source unit 36 when the commercial power supply is shut off.

  The construction material 31 is, for example, a member that forms a ceiling of a living room, bedroom, entrance, etc. of a house. The fixture body 32 of the lighting fixture 30 is fixed to the construction material 31 with an adapter 47. That is, the luminaire 30 is a so-called ceiling light that is attached to the ceiling of a living room, bedroom, entrance, or the like.

The first light source unit 34 is provided on the LED circuit board 35 of the first light source unit 34 and emits light in a direction perpendicular to the surface direction (arrow A direction) of the construction material 31, that is, a direction perpendicular to the floor surface. Is the main light source. As an example, the first light source unit 34 is an LED having a color temperature of emitted light of 2700 to 6500K.
Here, the term “perpendicular” refers to a direction opposite to the mounting surface, for example, the building material 31 (ceiling or wall).
The first light source unit 34 is covered with a translucent cover 41. The translucent cover 41 includes a cover frame portion 42 attached to the instrument main body 32 and a milk white shade 43 attached to the cover frame portion 42. The light emitted from the first light source 34 illuminates the living room, bedroom, entrance, etc. via the milk white shade 43.

  The second light source unit 36 includes a circuit board 37 accommodated in the instrument main body 32, a white LED package 38 and a blue LED package 39 mounted on the circuit board 37, and is used as a sub-light source. The white light of the white LED package 38 and the blue light of the blue LED package 39 are combined and emitted from the second light source unit 36.

The light emitted from the second light source unit 36 has a color temperature of 7000K or higher. By providing the second light source unit 36 with the white LED package 38 and the blue LED package 39, it is not necessary to provide the second light source unit 36 with a relatively expensive LED dedicated to the color temperature 7000K. Accordingly, light having a color temperature of 7000 K or more can be easily emitted from the second light source unit 36.
The second light source unit 36 may be formed of a single type of LED package as long as the color temperature of 7000 K or more can be secured.

The second light source unit 36 is covered with a transparent cover 48. The light emitted from the second light source unit 36 is blocked by a cover frame unit 42 that is a part of the translucent cover 41. Specifically, the cover frame part 42 projects outside the instrument body 12 below the second light source part 36.
Therefore, the light emitted from the second light source unit 36 is shielded from the optical axis 51 of the second light source unit 36 by a range H2 of θ2 degrees or more starting from the light emitting point 36A of the second light source unit 36. θ2 degrees is 45 degrees or more. Thereby, the light 52 emitted from the second light source unit 36 irradiates the living room, bedroom, entrance, and the like from the space 53 excluding the range H2.

By shielding the light emitted from the second light source unit 36 by the cover frame unit 42, the second light source unit 36 can be made difficult to enter the field of view. Therefore, it is possible to suppress a phenomenon in which the low-luminance portion is relatively blinded and looks dark by the high-luminance second light source unit 36.
Thereby, space recognition can be maintained suitably, for example, the role as a nighttime security light can fully be fulfilled.

  In particular, the first light source unit 34 and the second light source unit 36 are turned on exclusively. Therefore, the 1st light source part 34 and the 2nd light source part 36 are lighted independently, respectively. Thereby, when the 2nd light source part 36 is used as a security light, the space recognition by the light of the 2nd light source part 36 can be kept suitably, and the role as a safety light can fully be fulfilled.

In addition, by making the second light source unit 36 having high brightness difficult to enter the field of view, the awakening effect can be suppressed, and sleepiness can be prevented from being disturbed in a late-night toilet or the like.
Furthermore, by setting the color temperature of the second light source unit 36 to 7000 K or higher, light in a high wavelength region is emitted. Thereby, the fall of the visual sensitivity accompanying an aging can be suppressed.
In addition, by setting the color temperature of the second light source unit 36 to 7000 K or more, light that is easily visible from the second light source unit 36 can be efficiently emitted with less power.

By emitting light from the second light source unit 36 with a small amount of power, when the commercial power supply is shut off, the power can be supplied to the first light source unit 34 and the second light source unit 36 by driving the power storage unit 45.
Accordingly, the first light source unit 34 and the second light source unit 36 can be turned on for a long time by driving the power storage unit 45.

As described above, the lighting fixture 30 is provided in the fixture main body 32, the power supply unit 33 provided in the fixture main body 32, and the fixture main body 32, and is indoors with respect to the surface direction of the construction material 31. The first light source unit 34 is provided with the optical axis directed in a vertical direction so as to irradiate light in a substantially vertical direction that is a space. Moreover, the lighting fixture 30 is accommodated in the fixture main body 32, the 2nd light source part 36 which irradiates light in the direction parallel to the surface direction of the construction material 31, and the translucent cover 41 which covers a 1st light source part, It has.
In addition, parallel shown here shows irradiating to the horizontal direction which is the surface direction of the construction material 31 (ceiling or wall) which is an attachment surface. Therefore, the optical axis may be inclined so as to reflect light to the ceiling / wall or the like so as to irradiate light in the lateral direction.
The second light source unit 36 has a color temperature of emitted light of 7000K or higher. The luminaire 30 uses the translucent cover 41 as a member that shields the range H2 of 45 degrees or more from the light emitting point 36A of the second light source unit 36 with respect to the optical axis 51 of the second light source unit 36.

Further, preferably, in the lighting fixture 30, the first light source unit 34 and the second light source unit 36 are lit exclusively.
Furthermore, preferably, the lighting fixture 30 is accommodated in the fixture main body 32, and supplies electric power to the first light source unit 34 and the second light source unit 36 when the commercial power supply is shut off.
Preferably, in the lighting fixture 30, the second light source unit 36 includes a circuit board 7, a white LED package 38 and a blue LED package 39 mounted on the circuit board 37.

(Modification)
In the lighting apparatus 30 of the second embodiment, the example in which both the first light source unit 34 and the second light source unit 36 are turned on by the power storage unit when the commercial power supply is interrupted has been described. Only the second light source unit 36 can be turned on by the power storage unit 45.
By turning on only the second light source unit 36 with the power storage unit 45, the power storage unit 45 can be turned on for a longer time.

  That is, the modification of the lighting fixture 30 includes the power storage unit 45 housed in the fixture main body 32, and only the second light source unit 36 is turned on by the power storage unit 45 when the commercial power supply is shut off.

In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A change, improvement, etc. are possible suitably.
For example, the lighting fixture, construction material, fixture main body, power supply unit, light source unit, light shielding plate, first light source unit, second light source unit, and circuit board of the second light source unit used in the first and second embodiments. The shape and configuration of the white LED package, blue LED package, translucent cover, power storage unit, and the like are not limited to those illustrated, and can be changed as appropriate.

DESCRIPTION OF SYMBOLS 10, 30 Lighting fixture 11, 31 Construction material 12, 32 Appliance main body 13, 33 Power supply part 14 Light source part 15, 36A Light emission point 16, 51 Optical axis 17 Light-shielding plate 34 1st light source part 36 2nd light source part 37 2nd light source Circuit board 38 White LED package 39 Blue LED package 41 Translucent cover 45 Power storage unit H1 Range of 45 degrees or less H2 Range of 45 degrees or more

Claims (6)

An instrument body provided in the construction material;
A light source provided in the instrument body;
A light shielding plate orthogonal to the optical axis of the light source unit,
The light source unit has a color temperature of emitted light of 7000 K or higher,
The light shielding plate is a luminaire that shields light in a range of 45 degrees or less from a light emitting point of the light source unit with respect to the optical axis of the light source unit. An instrument body provided in the construction material;
A first light source unit that is provided in the instrument body and irradiates light in a direction perpendicular to the surface direction of the construction material;
A second light source unit that is provided in the instrument body and irradiates light in a direction parallel to the surface direction of the construction material;
A translucent cover covering the first light source unit,
The second light source unit has a color temperature of emitted light of 7000 K or higher,
A luminaire having a member that shields a range of 45 degrees or more from a light emitting point of the second light source unit as a starting point with respect to an optical axis of the second light source unit. The lighting fixture according to claim 2,
The said 1st light source part and the said 2nd light source part are the lighting fixtures lighted exclusively mutually. The lighting fixture according to claim 2,
A lighting fixture having a power storage unit that is housed in the fixture main body and supplies power to the first light source unit and the second light source unit when a commercial power source is cut off. The lighting fixture according to claim 2,
Having a power storage unit housed in the appliance body;
A lighting fixture in which only the second light source unit is turned on by the power storage unit when a commercial power source is cut off. In the lighting fixture of any one of Claim 2 thru | or 5,
The second light source unit includes a circuit board, and a white LED package and a blue LED package mounted on the circuit board.

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