JP5282975B2 - Lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guide light restraining enlargement of an apparatus, and, as a light source unit using a light guide plate, capable of restraining luminance unevenness on a display plate even if a monitor lamp is provided in an area opposing to the display plate, in one embedded into a floor or the like. <P>SOLUTION: A first light source unit 3a, a second light source unit 3b and a monitor lamp 7 are arranged in parallel to face an opening of an inner box 12 of an apparatus body 2 and along a length side direction of the opening. Since a light emission direction from a light emission surface 62 of the light guide plate 6 is to have a light distribution W which spreads in a slant direction toward an opposite side from a light incident surface 61 of the light guide plate 6, the emission light from the light guide plate 6 is irradiated between the first light source unit 3a and the second light source unit 3b on the display plate 8 and in an area of the monitor lamp 7. With this, luminance unevenness on the display plate 8 hardly occurs. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a guide light that is installed in a floor.

  Conventionally, an embedded guide lamp embedded in a floor or the like cannot be provided with a monitor lamp outside the instrument body due to installation restrictions. The technical standard stipulates that a guide lamp with a built-in monitor lamp, such as the embedded guide light, only needs to be visible during maintenance.

  Moreover, in this kind of induction lamp, a configuration in which a straight tube type fluorescent lamp is provided in the fixture main body so as to irradiate from the back surface of the display board is known (for example, see Patent Document 1).

JP 2004-87156 A

  In such a conventional guide lamp, since the fluorescent lamp is installed on the back surface of the display board, that is, directly below the display board, luminance unevenness is caused between the display board area directly above the fluorescent lamp and the display board area that is outside the fluorescent lamp. It was easy to occur. Therefore, it is conceivable to install the fluorescent lamp and the display plate as far apart as possible as a means to reduce luminance unevenness in the direct system, but this would increase the size of the instrument body and reduce the embedding depth. Since it becomes long, it is not suitable.

  Therefore, it is conceivable to implement a recessed guide light using a so-called light guide plate method, but the embedded display panel is a wall direct mount type, ceiling direct mount type, etc. Since the size is different, a dedicated light guide plate and light source are used, which is not suitable for manufacturing.

  Even with this type of guide light, the monitor lamp is indispensable as described above. Therefore, if an embedded guide light is to be implemented with one light guide plate, the monitor lamp has the light guide plate arranged. There is a possibility that the instrument main body will become large in size because it will be provided at a location outside the region where it is present. In addition, it is conceivable to install a monitor lamp on the end side of the light guide plate that is just an area facing the display unit. However, the area of the display plate on which the monitor lamp is installed is not sufficiently irradiated with light. It is not suitable because it may become darker.

  The present invention has been made in view of the above, and in a guide light that is embedded and installed in a floor or the like, while suppressing the increase in size of the instrument, the light source unit using a light guide plate, the monitor lamp being a display plate It is an object of the present invention to provide a guide light that can suppress luminance unevenness on a display board even if it is provided in a directly facing area.

  The guide light according to claim 1 is a box-shaped appliance main body with one side opened; a light-diffusing display plate attached to the appliance main body with the opening closed; A light guide plate having a main body, a light emitting surface provided on one surface of the flat plate main body, and a light incident surface provided on an end surface substantially orthogonal to the light emitting surface, and along a longitudinal direction of the light incident surface of the light guide plate First and second light source units comprising a light source disposed; a lighting device for lighting the light source regularly or emergencyly;

A battery housed in the appliance main body and charged by a commercial AC power source; a monitor lamp disposed in the display device main body so as to notify the charging state of the battery by lighting, and the lighting state can be visually recognized from the outside of the display board; A light emitting direction from the light emitting surface of the light guide plate is a light distribution that spreads in an oblique direction toward the opposite side of the light incident surface of the light guide plate,

The first light source unit, the second light source unit, and the monitor lamp are provided in parallel with each other along the longitudinal direction of the opening, and the first light source unit and the second light source unit. Are arranged in the order of the light source of the first light source unit, the light guide plate, the light source of the second unit, and the light guide plate. The second light source unit and the monitor lamp are the light incident surface of the light guide plate of the second light source unit. Is characterized in that the opposite end and the installation part for installing the monitor lamp are arranged in parallel.

  In the present invention and the following inventions, definitions and technical meanings of terms are as follows unless otherwise specified.

  The light source may have any form such as a point light source, a linear light source, and a surface light source, and may further exhibit any light emitting action such as a fluorescent lamp, LED, and organic EL.

  The display board is formed so that the symbol of the display body can be visually recognized by the irradiation light from the light source unit, but the irradiation light from the light source may be either direct or indirect.

  “Lighting of the light source regularly” means a state where the lighting device inputs an AC voltage from a commercial AC power source to light the light source, and “Emergency lighting of the light source” means that the lighting device receives a DC voltage from the battery. A state where the light source is turned on after input.

  “Light distribution that spreads in an oblique direction toward the side opposite to the light incident surface of the light guide plate” means that the light distribution of the main light emission from the light guide plate faces the light incident surface from the light incident surface side. The state which has shifted toward the side is shown. That is, when facing the light exit surface, the amount of light irradiated on the end portion side opposite to the light entrance surface is larger than that on the light entrance surface side.

  The operation of the present invention will be described. The guide light of the present invention is a device in which a pair of light source units using a light guide system using a light guide plate is disposed in an instrument body embedded in a floor or the like. In this case, it is preferable that the pair of light source units use a pair of light source units similar to those used in other types of guide lights (more preferably, so-called class C or B This is a guide light of the wall direct type or ceiling direct type, which is called a class, and it has the same specifications as the kind of guide lights of relatively large quantity and distributed in the market. By adopting such a specification, it is not necessary to provide a dedicated light guide plate that is used only in the embedded type, so that versatility is good and manufacturing costs are not improved.

  Further, the first light source unit, the second light source unit and the monitor lamp are provided so as to face the opening of the instrument body and along the longitudinal direction of the opening. The one light source unit and the second light source unit are arranged in the order of the light source of the first light source unit, the light guide plate, the light source of the second unit, and the light guide plate. At this time, there is a possibility that there is a gap between the first light source unit and the second light source unit, and between the first light source unit and the light guide plate of the second light source unit, the light source ( The light source is provided to allow light to enter the light guide plate, and does not emit light directly from the light source toward the display plate. Therefore, between the first light source unit and the second light source unit, a dark portion tends to be formed on the display plate. However, in the present invention, the light exit direction from the light exit surface of the light guide plate is the light entrance surface of the light guide plate. Since the light distribution is such that it spreads in an oblique direction toward the opposite side, the emitted light from the first light source unit is irradiated between the first light source unit and the second light source unit on the display board. It will be. Thereby, even if a pair of light source units are arranged side by side, luminance unevenness such that the display plate near the adjacent portion becomes extremely dark compared to the surrounding area does not occur. Note that the display plate area near the light source portion of the first light source unit is not extremely dark because light from the light source unit is irradiated by diffusion or the like in the instrument body.

  Further, the second light source unit and the monitor lamp are arranged side by side so that the end of the light guide plate of the second unit opposite to the light incident surface is opposite to the installation portion where the monitor lamp is installed. This is because the light distribution of the light guide plate of the second light source unit is such that the light distribution spreads in an oblique direction toward the opposite side of the light incident surface of the light guide plate. Light emitted from the second light source unit is applied to the area of the display plate in the vicinity of the monitor lamp. Therefore, even if the second light source unit and the monitor lamp (including the installation part) are arranged in parallel, the display plate area near the monitor lamp does not become dark.

  In addition, it is preferable that the second light source unit and the installation portion of the monitor lamp are arranged with a space therebetween. This is because the light emitted from the second light source unit is easily irradiated in the vicinity of the display plate immediately above the monitor lamp by having the interval.

  The guide light according to claim 2 is a box-shaped appliance main body having one side opened; a light-diffusing display plate attached to the appliance main body by closing the opening; and a flat plate shape incorporated in the appliance main body. A light guide plate having a main body, a light emitting surface provided on one surface of the flat plate main body, and a light incident surface provided on an end surface substantially orthogonal to the light emitting surface, and along a longitudinal direction of the light incident surface of the light guide plate A light source unit comprising: a light source disposed; a lighting device that lights the light source regularly or emergencyly; a battery that is housed in the instrument body and is charged by a commercial AC power source; And a monitor lamp disposed in the display device main body so that the lighting state can be visually recognized from the outside of the display plate, the light emission direction from the light emission surface of the light guide plate is the light incident surface of the light guide plate To the other side Light distribution spreads in an oblique direction, faces the opening of the instrument body, and extends along the longitudinal direction of the opening. The light source of the light source unit, the light incident surface of the light guide plate, and the light output surface of the light guide plate And the monitor lamp are arranged side by side, and the light source unit and the monitor lamp are arranged side by side so that the end opposite to the light incident surface of the light guide plate and the installation section for installing the monitor lamp face each other. It is characterized by.

  The present invention realizes a single light source unit. In the present invention, a guide light of a wall direct attachment type or ceiling direct attachment type so-called C class or B class, which is not a buried light guide plate, is relatively suitable. It is that the light source unit in the kind of guide lamp which is distributed in the market can be used with a common specification. According to the present invention, substantially the same operation and effect as the first aspect of the invention can be obtained.

  According to the first and second aspects of the present invention, in the embedded guide lamp, even in the light source unit using the light guide plate, the monitor lamp can be disposed in a region facing the opening of the instrument body. Since there is no special space for disposing the monitor lamp, it is possible to suppress an increase in the size of the guide light. Moreover, even if it is a light source unit using a light-guide plate and a monitor lamp is provided in the area | region facing a display board, the brightness nonuniformity in a display board can be suppressed.

It is explanatory drawing which shows the guide light of embodiment. It is a top view which shows arrangement | positioning of the inner case and light source unit of the same guide light. It is a side view explaining the principal part of the same guide light. It is a perspective view which shows the guide light of a specification different from the guide light.

  Hereinafter, the guide light 1 in this embodiment is demonstrated with reference to figures. FIG. 1A is a front view showing an embedded guide light 1, and FIG. 1B is a side view of the guide light 1. FIG. 2 is a top view showing the inner box of the guide light 1 and the arrangement of each light source unit, monitor lamp, etc. arranged in the inner box, and FIG. 3 is a schematic explanatory view showing the storage state of the components in the inner box, FIG. 4 is a perspective view showing a different type of guide light different from the guide light 1. Moreover, in each figure, the same code | symbol is attached | subjected to the same or an equivalent part, and the overlapping description is abbreviate | omitted.

  The guide lamp 1 according to the present embodiment is used as a floor embedded type. The guide lamp 1 is formed by including an appliance body 2, light source units 3a and 3b, a lighting device 4, a battery 5, a monitor lamp 7, a display plate 8, a transparent protective plate 9, a presser frame 10, and the like.

  The instrument body 2 includes an outer box 11 and an inner box 12. One surface, for example, the upper surface, of the outer box 11 having a rectangular parallelepiped shape is opened. Further, the vertical and horizontal dimensions and the height of the inner box 12 having the same upper surface as the outer box 11 are smaller than the corresponding dimensions of the outer box 11, and the inner box 12 is accommodated and fixed in the outer box 11. Yes. An annular support flange 12 b is attached to the inner peripheral surface of the opening edge of the inner box 12.

  The inner box 12 contains a light source 3, a lighting device 4, a battery 5, a reflection plate 6, and a monitor lamp 7.

  That is, the lighting device 4 is mounted on the bottom plate 12 a of the inner box 12. The lighting device 4 includes a lighting circuit unit for lighting the light source units 3 a and 3 b and a charging circuit unit for charging the battery 5. Further, as shown in FIG. 3, the bottom plate 12a has a unit fixing portion 16 for fixing the first light source unit 3a as shown in FIG. 3, and a unit for fixing the second light source unit 3b near the substantially central portion of the bottom plate 12a. A fixing portion 16 is provided. The battery 5 is also placed on the bottom plate 12a. The battery 5 is electrically connected to the lighting device 4 and the light source units 3a and 3b by wiring.

  The light source units 3a and 3b have an LED module 31 that is a light source that uses a plurality of LEDs as light emitting means and covers the LEDs with a holder member as shown in FIGS. 2 and 3, and this LED module 31 is disposed. The light incident surface 61 is a light incident surface 61, the light guide plate 6 having a light output surface 62 provided on a surface substantially orthogonal to the light incident surface, and the surface of the light guide plate 6 and the surface opposite to the light output surface 62. The frame part 63 which covers is included.

  The light emitted from the light source units 3a and 3b spreads in an oblique direction toward the end surface 64 opposite to the light incident surface 61 of the light guide plate 6 as shown in FIG. The light distribution W is as follows. That is, when facing the light exit surface 62, the amount of light emitted to the end surface 64 side opposite to the light incident surface 61 side is increased.

  The light source units 3a and 3b have the same specifications and the same dimensions as the light guide plate and the LED module used in the dual-use type combining the wall direct attachment type and the ceiling direct attachment type shown in FIG.

  The monitor lamp 7 is built in the inner box 12, and is formed of a unit in which three display units 72, 73, 74, an inspection switch 75, and the like are mounted on the upper surface of a box-shaped monitor case 71 as an installation unit. . The monitor case 71 is screwed to one end in the longitudinal direction of the inner box 12.

  The display board 8 is made of a light diffusing material such as a milky white acrylic resin board, and its size is slightly smaller than the opening of the inner box 12. The display board 8 covers the first and second light source units 3a and 3b as shown in FIGS. 1 and 3 by covering the support flange 12b with the four sides so as to be hooked from the opening side of the inner box 12. Covering and opening the inner box 12 is closed. Further, the display board 8 has a display 8a indicating, for example, an evacuation exit on the surface thereof. The display 8a is provided, for example, by printing a green light-transmitting paint, and all the portions other than the display 8a are non-display areas.

  In addition, the display plate 8 is provided with a transparent protective plate 9 on the front surface in order to prevent the display plate 8 from being damaged. The protective plate 9 is made of a glass plate, preferably tempered glass. The protective plate 9 is approximately the same size as the display plate 8 and is laminated on the display plate 8. The display plate 8 and the protection plate 9 are fixed with a presser frame 10. The presser frame 10 is made of stainless steel, and the outer periphery thereof is attached to the instrument main body 2 with screws 32. The presser frame 10 attached in this manner closes the square annular opening between the outer box 11 and the inner box 12 and fixes the display plate 8 and the protection plate 9.

  The operation of the present embodiment will be described. In the guide lamp 1 of this embodiment, a pair of light source units 3a and 3b using a light guide system using a light guide plate 6 is disposed in an appliance main body 2 that is embedded in a floor. The pair of light source units 3a and 3b can be used in common with the dual-purpose induction lamp 14 that is distributed in the market with a relatively large quantity of dual-purpose type C as shown in FIG. There is no need to provide an embedded light guide plate, and the versatility is good and the manufacturing cost does not increase.

  Further, the first light source unit 3a, the second light source unit 3b, and the monitor lamp 7 are provided so as to face the opening of the inner box 12 of the instrument body 2 and along the longitudinal direction of the opening. Of these, the first light source unit 3a and the second light source unit 3b are arranged in the order of the LED module 31 of the first light source unit 3a, the light guide plate 6, the LED module 31 of the second unit 3b, and the light guide plate 6. It will be established. At this time, a gap X (gap X is provided between the first light source unit 3a and the second light source unit 3b in order to allow each light source unit 3a, 3b to be disposed even if manufacturing variation occurs. Are disposed so as to be formed. Further, the LED module 31 of the second light source unit 3b adjacent to the first light source unit 3a is provided so that light enters the light guide plate 6 by the holder but does not emit light directly toward the display plate 8. The portion between the first light source unit 3a and the second light source unit 3b tends to be a dark portion on the display panel 8. However, in this embodiment, the light emission direction from the light exit surface 62 of the light guide plate 6 is a light distribution W that spreads in an oblique direction toward the opposite side of the light entrance surface 61 of the light guide plate 6. Therefore, the emitted light from the light guide plate 6 of the first light source unit 3a is irradiated between the first light source unit 3a and the second light source unit 3b on the display plate 8. Thereby, even if a pair of light source units 3a and 3b are arranged side by side, luminance unevenness such that the display plate 8 near the adjacent portion becomes extremely dark compared to the surrounding area does not occur.

  In addition, since the display board 8 area | region of the LED module 31 vicinity of the 1st light source unit 3a is irradiated with light by the spreading | diffusion, reflection, etc. in the instrument main body 2, it does not become extremely dark.

  Further, the second light source unit 3b and the monitor lamp 7 are opposed to an end portion 64 opposite to the light incident surface 61 of the light guide plate 6 of the second light source unit 3b and an installation portion 71 where the monitor lamp 7 is installed. Are arranged side by side. This is because the light distribution W of the light guide plate 6 of the second light source unit 3b is such that the light distribution W spreads in an oblique direction toward the side opposite to the light incident surface 61 of the light guide plate 6, and therefore the second light source unit 3b. The light emitted from the second light source unit 3b is applied to the area of the display plate 8 in the vicinity of the monitor lamp 7 or between the installation portion 71 of the monitor lamp 7. Therefore, even if the second light source unit 3b, the monitor lamp 7, and the installation portion 71 are arranged in parallel, the display plate 8 area near the monitor lamp 7 does not become dark.

  Further, the second light source unit 3b and the installation portion 71 of the monitor lamp 7 are spaced apart from each other, and the monitor lamp 7 has a height relationship that is closer to the display plate 8 than the end portion 64 of the light guide plate 6. ing. By being arranged in this way, first, by having an interval, the light emitted from the second light source unit 3 b is easily irradiated in the vicinity of the display plate 8 immediately above the monitor lamp 7. In addition, the monitor lamp 7 is required to be able to visually recognize the display state from the outside, but even if the emitted light from the second light source unit 3b is irradiated directly above the monitor lamp 7, the monitor lamp 7 is displayed on the display plate 8. Therefore, it is easy to recognize the lighting state of the monitor lamp 7 even through the display board 8.

  In the present embodiment, the form using two light source units is shown. However, depending on the size of the display board, the same form can be realized by using one light source unit. This is substantially the same as this embodiment.

  Guide light ... 1, fixture body ... 2, first light source unit ... 3a, second light source unit ... 3b, lighting device ... 4, battery ... 5, monitor lamp ... 7, display board ... 8

Claims (2)

A box-shaped instrument body with one side open;
A light-diffusing display plate attached to the instrument body by closing the opening;
A light guide plate that is built in the instrument body, has a flat plate body, a light exit surface provided on one surface of the flat plate body, and a light entrance surface provided on an end surface substantially orthogonal to the light exit surface; First and second light source units comprising light sources disposed along the longitudinal direction of the light incident surface;
A lighting device that lights the light source regularly or emergencyly;
A battery housed in the appliance body and charged by a commercial AC power source;
A monitor lamp disposed in the display device main body so that the state of charge of the battery is informed by lighting, and the lighting state is visible from the outside of the display board;
In a guide light comprising:
The light output direction from the light output surface of the light guide plate is a light distribution that spreads in an oblique direction toward the opposite side of the light incident surface of the light guide plate,
The first light source unit, the second light source unit and the monitor lamp are provided so as to face the opening of the instrument main body and along the longitudinal direction of the opening,
The first light source unit and the second light source unit are arranged in the order of the light source of the first light source unit, the light guide plate, the light source of the second unit, and the light guide plate.
The second light source unit and the monitor lamp are arranged side by side so that the end of the second light source unit opposite to the light incident surface of the light guide plate and the installation portion for installing the monitor lamp face each other. A guide light. A box-shaped instrument body with one side open;
A light-diffusing display plate attached to the instrument body by closing the opening;
A light guide plate that is built in the instrument body, has a flat plate body, a light exit surface provided on one surface of the flat plate body, and a light entrance surface provided on an end surface substantially orthogonal to the light exit surface; A light source unit comprising a light source disposed along the longitudinal direction of the light incident surface;
A lighting device that lights the light source regularly or emergencyly;
A battery housed in the appliance body and charged by a commercial AC power source;
A monitor lamp disposed in the display device main body so that the state of charge of the battery is informed by lighting, and the lighting state is visible from the outside of the display board;
In a guide light comprising:
The light output direction from the light output surface of the light guide plate is a light distribution that spreads in an oblique direction toward the opposite side of the light incident surface of the light guide plate,
Opposite the opening of the instrument body, and along the longitudinal direction of the opening, the light source of the light source unit, the light incident surface of the light guide plate, the light emission surface of the light guide plate and the monitor lamp are provided side by side,
A light guide unit, wherein the light source unit and the monitor lamp are arranged side by side so that the end of the light guide plate opposite to the light incident surface and the installation portion for installing the monitor lamp face each other.

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