JP2010114028A - Guide light device and guide light fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a guide light device, and a guide light capable of realizing a long service life and high reliability by taking countermeasures for temperature. <P>SOLUTION: A first light-emitting part 31 to illuminate a bright color part 22 formed on a display face 21 of a display plate 20 is constituted of a plurality of numbers of LEDs 311, and a second light-emitting part 32 to illuminate a dark color part 23 formed on the display face 21 of the display plate 20 is constituted of a plurality numbers of LEDs 321. Then, on a regular basis, by using electric power supplied from outside, a regular lighting circuit 42 turns on the LEDs 311 of the first light-emitting part 31 to brighten the bright color part 22, and turns on the LEDs 321 of the second light-emitting part 32 to brighten the dark color part 23. By this, by dispersing a light source, since junction temperature which is the temperature of a PN joint part of the LEDs 311, 321 that is the light source is decreased, the long service life and the high reliability of the LEDs 311, 321 become possible. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a guide light device and a guide light fixture using LEDs.

Conventionally, there has been proposed a display plate that emits light from a light source by using one end side as an incident surface (see Patent Document 1).
This display plate is composed of a plurality of light guide plates corresponding to respective display colors and a plurality of light sources having different emission colors. The light guide plate is formed in a substantially rectangular shape with the surface as a display surface and one end side as an incident surface, and the incident surface is formed substantially orthogonal to the display surface. In addition, the back surface of each light guide plate is subjected to processing for polarizing light incident on the light guide plate in the direction of the display surface at locations corresponding to displayed characters, designs, and the like. A plurality of light sources are arranged so as to be parallel to the longitudinal center line of the incident surface of the light guide plate.

A surface light source device using LEDs has been proposed (see Patent Document 2).
The surface light source device includes a light guide plate having a light incident surface on which light is incident and an output surface that is formed substantially orthogonal to the light incident surface and emits light from the light incident surface, and is opposed to the light incident surface. And a plurality of LEDs having anisotropy in the light distribution, and at least one LED is disposed 90 degrees differently from the other LEDs and is parallel to the exit surface The spread of light is different from other LEDs.
Japanese Patent Laid-Open No. 2001-42802 (FIG. 1) JP 2008-98190 A (FIG. 1)

By the way, in the surface mount type LED which is now becoming mainstream, high light output has been achieved by recent technical progress.
However, there is a problem that a temperature rise countermeasure is necessary because the temperature rise due to the higher light output of the LED causes the deterioration of the luminance and the shortening of the lifetime.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a guide light device and a guide light fixture that can have a long life and high reliability by taking measures against temperature.

  The guide lamp device of the present invention is made of a material having translucency, has a display surface to which a display for guidance is given by separately applying a bright color portion and a dark color portion, and from a direction along the display surface. A display plate that emits light from the display surface by incident light, and a single or a linear array arranged along an edge of the display surface so that the light color portion is incident from a direction along the display surface, or A single light emitting unit having a plurality of LEDs and a single light emitting unit or a plurality of LEDs arranged in a straight line along an edge of the display surface so as to enter the dark color portion from a direction along the display surface. A second light-emitting unit having the LEDs, a regular lighting circuit for lighting each LED of the first light-emitting unit and the second light-emitting unit by power supplied from the outside, and a storage battery for storing power , No power is supplied from outside And an emergency lighting circuit for lighting each of the LEDs of the first light emitting unit and the second light emitting unit using the storage battery as a power source, and the first light emitting unit is more suitable than the second light emitting unit. Also, the luminance is high, and the first light emitting unit and the second light emitting unit are arranged facing each other across the display surface.

With this configuration, the first light emitting unit that illuminates the bright color portion formed on the display surface of the display panel is configured by a plurality of LEDs, and the second light emission that illuminates the dark color portion formed on the display surface of the display plate. The part was composed of a plurality of LEDs. And normally, while using the electric power supplied from the outside by the regular lighting circuit, the LED of the first light emitting unit is turned on to brighten the bright color portion, and the LED of the second light emitting unit is turned on to darken the color. Brighten the part.
As described above, the first and second light emitting units are configured by a plurality of LEDs, and by dispersing the light source, the junction temperature, which is the temperature of the PN junction of the LED that is the light source, can be lowered. Can be extended in service life and reliability.
When power is not supplied from the outside, the emergency lighting circuit uses the power from the storage battery to cause the light color portion and dark color portion LEDs to emit light. Thereby, the light color part and the dark color part currently formed in the display surface of a display board are light-emitted.

  In addition, the guide lamp device of the present invention has a configuration in which the first light emitting unit is disposed below.

  With this configuration, since the first light emitting part with high brightness, that is, large heat generation, is arranged below, it is possible to avoid the accumulation of heat on the mounting part such as the ceiling part, and the LED junction temperature is lowered to reduce the LED Can be extended in service life and reliability.

  Further, in the guide lamp device of the present invention, the display plate includes a light incident surface on which light is incident, an emission surface that is formed substantially orthogonal to the light incident surface, and emits light from the light incident surface, and a counter-emitter surface. The first light emitting unit and the second light emitting unit each include an LED substrate to which an LED is attached, and an LED substrate holder that holds and fixes the LED substrate, and the light guide plate In addition, a metal plate is disposed at a position facing the counter-light-emitting surface, and the metal plate and the side surface portion of the LED substrate holder are in surface contact.

  With this configuration, the LED substrate, which is a heat source, is brought into contact with the LED substrate holder, and the LED substrate holder is further brought into contact with the metal plate, so that the heat dissipation efficiency is improved and the junction temperature of the LED is lowered to extend the life and increase the LED. Reliability becomes possible.

  In addition, the guide lamp device of the present invention has a configuration in which both ends of the metal plate are bent to form a U-shaped bent portion, and the LED substrate is disposed on the inner side of the bent portion. is doing.

  With this configuration, by integrating the LED substrate holder and the metal plate, the thermal resistance between the LED substrate holder and the metal plate is lowered, the junction temperature of the LED is lowered, and the life of the LED is increased and high reliability is achieved. Sexualization becomes possible.

  In addition, the guide light device of the present invention has a configuration in which a surface of the metal plate facing the light guide plate is plated or painted white.

  With this configuration, the white painted surface and the plated surface are formed by separately coating the light color portion and the dark color portion on the display surface of the display plate so that light incident from the upper surface of the light guide plate is mainly emitted to the front surface. The guidance display can be clearly displayed.

  In the guide lamp device of the present invention, a metal frame is disposed so as to surround the outer peripheral portion of the side surface of the guide lamp device, and the LED substrate is in surface contact with the inner side surface portion of the metal frame. It has an installed configuration.

  With this configuration, the heat generated by the LED can be radiated by the metal frame. For this reason, the junction temperature of the LED can be lowered to extend the life and reliability of the LED.

  Further, the guide lamp device according to the present invention includes a metal box disposed so as to surround the outer peripheral side surface of the guide lamp device and the anti-light-emitting surface of the light guide plate, and is opposed to the inner side surface portion of the metal box. It has the structure installed so that the said LED board might surface-contact.

  With this configuration, by using a metal box excluding only the display panel side, the junction area of the LED light source can be lowered by increasing the heat radiation area, and the life and reliability of the LED can be increased.

  Furthermore, the guide light fixture of this invention has the structure incorporating the guide light apparatus mentioned above.

  With this configuration, the junction temperature of the LED, which is a light source, can be lowered, and the lifetime and reliability of the LED can be increased.

  In the present invention, the first and second light emitting units are configured by a plurality of LEDs, and by dispersing the light source, the junction temperature that is the temperature of the PN junction of the LED that is the light source can be lowered. Thus, it is possible to provide a guide lamp device having an effect that it is possible to extend the service life and increase the reliability.

  Hereinafter, a guide light device and a guide light fixture according to embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a front view of a guide light device according to the first embodiment, FIG. 2 is an exploded perspective view of the guide light device, and FIG. 3 is a configuration diagram of the guide light device.
As shown in FIGS. 1 and 2, the guide lamp device 10 according to the first embodiment includes a display board 20 having a display surface 21 on which a display for guidance is provided, and a light emitting unit 30 that causes the display surface 21 to emit light. is doing. The display board 20 is attached to the opening of the rectangular box-shaped guide lamp apparatus body 11 having an open front surface.

  The display board 20 is made of a translucent material, and is, for example, a rectangular plate-like member. A display surface 21 is formed on the outer surface of the display board 20, and a guidance display is attached by separately coloring the light color portion 22 and the dark color portion 23. The display panel 20 causes the display surface 21 to emit light by light incident from a direction along the display surface 21.

  The display shown in FIG. 1 is, for example, one without an escape exit guide light arrow, and the display surface 21 is divided into three light emitting regions with the extended straight lines at the left and right ends of the exit 211 as boundaries. Let the region be Z1-Z3.

  In the display of FIG. 1, the central light emitting region Z2 in which the white portion occupies a large amount is the light color portion 22, and the light emitting regions Z1 and Z3 in which the white portion is not present or small are the dark color portion 23. The bright color part 22 is, for example, a white part that diffuses the light of the first light emitting part 31 and transmits about 90%, and is distributed in the center part in the left-right direction where the exit is drawn. The dark color portion 23 is, for example, a green portion that diffuses the light of the second light emitting portion 32 and transmits mainly the green component to make the transmittance approximately 20% as a whole.

  The light emitting unit 30 includes a first light emitting unit 31 and a second light emitting unit 32, and includes light emitting cases 312 and 322 each having a rectangular parallelepiped shape that accommodates a plurality of LEDs 311 and 321 serving as light sources.

  The first light emitting unit 31 causes the light color portion 22 to enter from the direction along the display surface 21 (that is, from the lower side to the upper side). For this reason, a light emitting case 312 for emitting the light of the LED 311 upward is provided along the lower edge of the display surface 21. The LEDs 311 used in the first light emitting unit 31 have high brightness. For example, eight LEDs 311 are arranged in a straight line inside the light emitting case 312. The total length of the light emitting case 312 of the first light emitting unit 31 is substantially the same as the width of the lower end of the display panel 20.

The second light emitting unit 32 causes the light color portion 23 to enter from the direction along the display surface 21 (that is, from the upper side to the lower side). For this reason, a light emitting case 322 that emits the light of the LED 321 downward is provided along the upper edge of the display surface 21. Here, since the dark color portion 23 is provided separately on both left and right end portions of the display surface 21, for example, three LEDs 321 are provided on a straight line in the light emitting case 322 at a distance of three. The LED 321 used for the second light emitting unit 32 has a lower luminance than the LED 311 used for the first light emitting unit 31. The total length of the light emitting case 322 of the second light emitting unit 32 is substantially the same as the width of the upper end of the display panel 20.
Therefore, the LED 311 with high luminance and the LED 321 with low luminance are arranged separately in the vertical direction.

As shown in FIG. 3, a lighting device 40 that lights the first light emitting unit 31 and the second light emitting unit 32 includes a regular lighting circuit 42 that converts AC power supplied from an external AC power supply 41 into DC power, A storage battery 43 that stores power, a charging circuit 44 that charges the storage battery 43, and an emergency lighting circuit 45 that lights the light emitting unit 30 using the storage battery 43 as a power source when power is not supplied from the AC power supply 41.
As shown in FIG. 2, the regular lighting circuit 42, the charging circuit 44, and the emergency lighting circuit 45 are housed in one lighting case to constitute the lighting device 40. The lighting device 40 and the storage battery 43 are accommodated inside the box-shaped lighting fixture body 11.

Therefore, normally, the regular lighting circuit 42 converts the power from the AC power supply 41 into direct current, and lights the first light emitting unit 31 of the light emitting unit 30 and the LEDs 311 and 321 of the second light emitting unit 32.
When power is not supplied from the external AC power supply 41, the emergency lighting circuit lights the LEDs 311 and 321 of the first light emitting unit 31 and the second light emitting unit 32 using the storage battery 43 as a power source.

  As described above, according to the guide lamp device 10 according to the first embodiment described above, the first light emitting unit 31 and the second light emitting unit 32 are configured by the plurality of LEDs 311 and 321, and the light sources are dispersed, thereby providing a light source. Since the junction temperature, which is the temperature of the PN junction of the LEDs 311 and 321, can be lowered, the lifetime of the LEDs 311 and 321 can be increased and the reliability can be increased.

  In addition, since the first light emitting unit 31 having high brightness, that is, large heat generation, is disposed below, it is possible to avoid the accumulation of heat on the mounting part such as the ceiling part, and the junction temperature of the LED 311 is lowered to reduce the LED 311 Long service life and high reliability are possible.

In addition, it is desirable that the rear surface of the display panel 20 be processed to reflect light such as plating or white coating so that light incident from above or below is emitted mainly from the front surface.
Moreover, you may change how to divide the light emission areas Z1-3. Moreover, the light emission area should just be plural.
Further, the display on the display surface 21 is not an arrow of the escape exit guide light, but is not limited thereto, and may be a double arrow of the escape exit, a single arrow or a double arrow of the passage guide light, and the like.

(Second Embodiment)
Next, a second embodiment of the present invention will be described.
FIG. 4 is an exploded perspective view of the guide light device according to the second embodiment, FIGS. 5 and 6 are a front view, a side view, a rear view, and FIGS. 7 and 8 showing an arrangement example of LEDs in the first light emitting unit. A front view, a side view, a rear view, and FIGS. 9A and 9B showing an arrangement example of LEDs in the second light emitting part are cross-sectional views showing a mounting structure of the light emitting part. In addition, the same code | symbol is attached | subjected to the site | part which is common in the guide light apparatus concerning 1st Embodiment mentioned above, and the overlapping description is abbreviate | omitted.

  As shown in FIG. 4, in the guide lamp device 10 </ b> B according to the second embodiment, the display plate 21 </ b> B has a light guide plate 24, and an optical sheet 25 and a display panel 26 are further laminated on the surface side 241 of the light guide plate 24. Have.

The optical sheet 25 is substantially parallel to the emission surface 241 that is the surface of the light guide plate 24.
The display panel 26 is made of a transparent plate such as acrylic resin, polycarbonate resin, glass, or a diffuse transmission plate, and is displayed on at least one of the outer surface 261 and the inner surface 262 by screen printing or a cutting sheet. Designs to be provided are provided.

  The light guide plate 24 is formed with light incident surfaces 242 and 243 on which light is incident, an output surface (surface) 241 that is formed substantially orthogonal to the light incident surfaces 242 and 243 and emits light from the light incident surfaces 242 and 243, and a reverse surface. And an output surface (back surface) 244. The light guide plate 24 is made of transparent acrylic resin, polycarbonate resin, or the like, and a light diffusing portion (not shown) that scatters light is formed on the emission surface 241. Further, the diffusing portion may be constituted by a rough surface or a minute spherical surface.

The first light emitting portion 31B is provided at one edge (here, the lower edge) of the light guide plate 24, and the second light emitting portion 32B is provided at the other edge (here, the upper edge). Yes.
The first light emitting unit 31B includes an LED substrate 313 to which the LED 311 is attached and an LED substrate holder 314 having a U-shaped cross section for holding and fixing the LED substrate 313. The LED 311 faces the light incident surface 243 at a predetermined interval. Thus, it is attached to the lower side of the light incident surface 243 (see FIG. 9A).
The second light emitting unit 32B includes an LED substrate 323 to which the LED 321 is attached and an LED substrate holder 324 having a U-shaped cross section for holding and fixing the LED substrate 323. The LED 321 faces the light incident surface 242 at a predetermined interval. Thus, it attaches to the upper side of the light-incidence surface 242 (refer Fig.9 (a)).

As shown in FIG. 5 and FIG. 6, in the LED arrangement in the first light emitting unit 31B, the LED 311 on the LED board 313 is arranged in the center part of the board, and the LED 313 is a surface mount type, It is fixed to 313 by soldering directly.
Further, when mounting an electronic component 33 other than an LED (for example, a constant voltage diode (zener diode) is connected in parallel at both ends of each LED electrode for protection against surge voltage due to external factors), the LED substrate 313 is mounted as shown in FIG. It may be mounted on the back side or may be mounted in the vicinity of the LED 311 on the front side as shown in FIG. Further, the LED board 313 is a double-sided mounting board (for example, a glass epoxy board FR4) as shown in FIG. 5, or a synthetic board in which a heat radiating metal plate 35 is bonded to the back side of the printed board 34 as shown in FIG. Also good.

  As shown in FIGS. 7 and 8, in the LED arrangement in the second light emitting unit 32B, the LEDs 321 on the LED board 323 are arranged on the board edge. The LED 321 is a surface mount type and is directly soldered and fixed on the LED substrate 323. When the electronic component 33 other than the LED 321 is mounted, it is the same as the LED substrate 313 in the first light emitting unit 31B described above.

  The LED substrate holders 314 and 324 are made of silver or white and have a high reflectance in order to hold and fix the LED substrates 313 and 323 and to make the light emitted from the LEDs 311 and 321 efficiently enter the light guide plate 24. It also has a function as a reflector. Specifically, it is desirable to use a material having a reflectance of 70% or more, more preferably 90% or more.

 In addition, a metal plate 27 is disposed at a position facing the counter light exit surface 244 of the light guide plate 24. This metal plate 27 is in surface contact with the side portions 315 and 325 of the LED substrate holders 314 and 324 (see FIG. 9).

  The metal plate 27 is disposed at a position facing the anti-light-emitting surface 244, so that the light emitted from the anti-light-emitting surface 244 of the light guide plate 24 efficiently reenters the light guide plate 24. Therefore, the metal plate 27 is made of a silver or white material having a high reflectance. Specifically, it is desirable to use a material having a reflectance of 70% or more, more preferably 90% or more.

  Next, the mounting structure of the light emitting unit 30 will be described. In addition, since the 1st light emission part 31B and the 2nd light emission part 32B can employ | adopt the same structure, it illustrates about the 1st light emission part 31B.

  As shown in FIG. 9A, the back side of the LED board 313 is attached so as to be in surface contact with the LED board holder 314 so that heat generated from the inside of the LED when the LED 311 is lit is dissipated also to the LED board holder 314 side. To. Further, the side surface 315 of the LED substrate holder 314 and the metal plate 27 are configured to be in surface contact so that the heat of the LED substrate holder 314 is easily transmitted to the metal plate 27 as well.

  In FIG. 9B, the heat transfer sheet 28 is interposed between the back surface side of the LED substrate 313 and the LED substrate holder 314 and between the side surface 315 of the LED substrate holder 314 and the metal plate 27. The heat transfer sheet 28 improves the degree of adhesion between the back surface side of the LED substrate 313 and the LED substrate holder 314 and between the side surface 315 of the LED substrate holder 314 and the metal plate 27, thereby obtaining a further heat dissipation effect. Is possible.

Next, the operation of the guide light device 10B having the above configuration will be described.
The light beam emitted from the LED 311 is reflected directly or by the LED substrate 313 and the LED substrate holder 314 and enters the light guide plate 24 from the light incident surface 243 of the light guide plate 24. The incident light propagates through the light guide plate 24 while being totally reflected. During this propagation, the light scattered by the diffusion portion provided on the exit surface 241 exits from the exit surface 241.

  A part of the light exits from the light exit surface 244 of the light guide plate 24, but is returned to the light guide plate 24 by the metal plate 27 and then exits from the exit surface 241. The light emitted from the exit surface 241 of the light guide plate 24 enters from one surface of the optical sheet 25, is totally reflected by the adjacent surface, exits from the upper surface of the optical sheet 25, and emits a large amount of white light on the display panel 26. Z2 is caused to emit light.

  The LED 321 is the same as the LED 311 described above, and finally the light emitting areas Z1 and 3 with a small white color of the display panel 26 are caused to emit light.

  In this manner, light that is oblique to the light exit surface 241 is projected to the light exit surface 241 by the diffusion portion on a plane perpendicular to the light incident surfaces 242 and 243 and the light exit surface 241 of the light guide plate 24 by the optical sheet 25. Thus, the guide light device 10B having an arbitrary light emitting region in a plane perpendicular to the light incident surfaces 242 and 243 and the light emitting surface 241 of the light guide plate 24 can be obtained.

  As mentioned above, according to the guide light apparatus 10B concerning 2nd Embodiment demonstrated, the effect similar to the guide light apparatus 10 concerning 1st Embodiment can be acquired. Further, since the LED substrates 313 and 323, which are heat sources, are brought into contact with the LED substrate holders 314 and 324, and the LED substrate holders 314 and 324 are brought into contact with the metal plate 27, the heat dissipation efficiency is improved, and the junction temperature of the LEDs 311 and 321 is increased. By lowering, it is possible to extend the life and reliability of the LEDs 311 and 321.

  Further, by plating or painting the surface of the metal plate 27 that faces the light exit surface 244 of the light guide plate 24 in white, it not only functions as a heat dissipation measure, but also efficiently emits light emitted from the light exit surface 244. It plays a role of making the light incident on the light guide plate 24 again. For this reason, the light emitted from the LEDs 311 and 321 can be efficiently emitted from the emission surface 241, the reflection sheet can be deleted, and the number of parts and the cost can be reduced.

(Third embodiment)
Next, a third embodiment of the present invention will be described.
10 is an exploded perspective view of a guide lamp device according to a third embodiment of the present invention, FIGS. 11A and 11B are cross-sectional views showing a mounting structure of a light emitting unit, and FIGS. FIG. 13 is a cross-sectional view of the metal plate in FIG. In addition, the same code | symbol is attached | subjected to the site | part which is common in the guide light apparatus concerning 1st and 2nd embodiment mentioned above, and the overlapping description is abbreviate | omitted.

As shown in FIG. 10, in the guide light device 10 </ b> C according to the third embodiment of the present invention, both ends of the metal plate 27 </ b> C are bent into a U-shaped cross section to form a bent portion 272, and the inner surface side of the bent portion 272 LED substrates 313 and 323 were disposed on the surface. Therefore, the inside of the bent portion 272 of the metal plate 27C also functions as a reflector.
In addition, although the case where the bending part 272 is provided only in one end part is illustrated in FIG. 10, it can also be provided in both end parts.

As shown in FIG. 11A, in the first light emitting unit 31C, the back side of the LED substrate 313 and the metal plate 27C are placed in surface contact, and the heat generated from the inside of the LED when the LED 311 is lit is generated by the metal plate 27C. Since heat is also radiated to the side, the junction temperature of the LED 311 can be reduced.
The same applies to the second light emitting unit 32C, and the junction temperature of the LED 321 can be reduced.

In FIG. 11B, a heat transfer sheet 28 is interposed between the back side of the LED substrate 313 and the metal plate 27C. The heat transfer sheet 28 improves the degree of adhesion between the back side of the LED substrate 313 and the metal plate 27 </ b> C, and can obtain a further heat dissipation effect.
In FIG. 11B, the bending angle of the metal plate 27C is also devised. In the guide light device 10B according to the second embodiment described above, it is assumed that there is a gap between the metal plate 27C and the light guide plate 24 (see FIG. 9B), which also affects light refraction. However, in FIG. 11B, the anti-light-emitting surface 244 of the light guide plate 24 and the metal plate 27C are in contact with each other so that the bending angle of the metal plate 27C matches the inclination angle of the light guide plate 24.
Thereby, there is no gap between the light guide plate 24 and the metal plate 27C, and it becomes possible to reduce the variation in the reflection angle of light of the metal plate 27C.

Examples of the display panel are shown in FIGS. 12 (a) and 12 (b), which are examples of an escape exit guide light, but are not limited thereto.
Further, as shown in FIG. 13, it is desirable that the inner surface of the metal plate 27C be subjected to white plating 271 or painting.

As described above, according to the guide light device 10B according to the third embodiment described above, the junction temperature of the LEDs 311 and 321 is reduced and the life is extended, similarly to the guide light devices 10 and 10B according to the first and second embodiments. The effect of high reliability can be obtained. Furthermore, since the thermal resistance between the LED substrate holder and the metal plate 27C is lowered by integrating the LED substrate holder and the metal plate 27C, it is more effective.
Further, the substrate holder can be deleted by bending the metal plate 27C.
In addition, since the rear surface is covered with the metal plate 27C which is an incombustible material, it is possible to prevent burning when a component abnormality occurs and to achieve safety.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described.
FIG. 14 is an exploded perspective view of the guide lamp device according to the fourth embodiment of the present invention. In addition, suppose that the same code | symbol is attached | subjected to the site | part which is common in the guide light apparatus concerning 1st-3rd embodiment mentioned above, and the overlapping description is abbreviate | omitted.

As shown in FIG. 14, in the guide light device 10D according to the fourth embodiment of the present invention, the metal frame 36 is disposed so as to surround the outer peripheral portion of the side surface of the guide light device 10D, and the inner side surface portion of the metal frame 36 is provided. The LED substrates 313 and 323 are placed so as to be in surface contact with each other in opposition to 361.
In addition, a reflection sheet 37 is provided so as to face the counter-exiting surface 244 of the light guide plate 24. The reflection sheet 37 is made of a silver or white material having a high reflectivity in order to efficiently re-enter the light output from the opposite light exit surface 244 of the light guide plate 24 to the light guide plate 24. Specifically, the reflection sheet has a reflectivity of 70%. As described above, it is preferable to use a material of 90% or more.

  The metal frame 36 is configured to surround the outer periphery of the light guide plate 24 and the optical sheet 25. Moreover, in order to install LED board 313,323, the upper end part and lower end part are bend | folded by the cross-sectional U-shape. The LED substrates 313 and 323 may directly contact the inner side surface portion 361, or the heat transfer sheet 28 may be interposed.

As described above, according to the guide light device 10D according to the fourth embodiment of the present invention, the heat generated by the LEDs 311 and 321 can be radiated by the metal frame 36. For this reason, the junction temperature of the LEDs 311 and 321 can be lowered, and the lifetime and reliability of the LEDs 311 and 321 can be increased.
Further, since the metal frame 36 also serves as the LED substrate holder, the number of components and the cost can be reduced by deleting the LED substrate holders 314 and 324.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described.
FIG. 15 is an exploded perspective view of a guide lamp device according to a fifth embodiment of the present invention, and FIGS. 16A and 16B are cross-sectional views showing a mounting structure of a light emitting unit. In addition, the same code | symbol is attached | subjected to the site | part which is common in the guide light apparatus concerning 1st-4th embodiment mentioned above, and the overlapping description is abbreviate | omitted.

As shown in FIG. 15, in the guide lamp device 10E according to the fifth embodiment of the present invention, the metal box 38 is provided so as to surround the outer periphery of the side surface of the guide lamp device 10E and the anti-light-emitting surface 244 of the light guide plate 24, The LED substrates 313 and 323 are placed so as to be in surface contact with the inner side surface portion 381 of the metal box 38.
Note that the LED boards 313 and 323 may directly contact the inner side surface 381 as shown in FIG. 16A, or the heat transfer sheet 28 is interposed as shown in FIG. 16B. Also good.

  A prism groove 245 is formed in parallel with the light incident surfaces 242 and 243 of the light guide plate 24E on the side opposite to the light exit surface 244 of the light guide plate 24E. The content of forming the prism groove 245 on the light-exiting surface 244 side of the light guide plate 24E is already known (see Japanese Patent No. 3417261).

  The diffusion film 51 and the lens sheet 52 are provided in a laminated state between the display panel 26 and the light guide plate 24E, but the optical sheet 25 (see FIG. 4 and the like) similar to the above-described embodiment is disposed. You can also.

  Further, a cutout or a locking portion for holding and fixing the light guide plate 24E, the diffusion film 51, the lens sheet 52, and the display panel 26 is provided on the side surface of the metal box 38 or the like, or a screw fixing hole is formed. For example, the metal box 38 may be used as a display panel holder.

As described above, according to the guide light device 10E according to the fifth embodiment of the present invention, the heat generated by the LEDs 311 and 321 can be radiated by the metal box 38. For this reason, the junction temperature of the LEDs 311 and 321 can be lowered, and the lifetime and reliability of the LEDs 311 and 321 can be increased.
In addition, since the metal box 38 also serves as the LED substrate holder, the number of components and cost can be reduced by deleting the LED substrate holders 314 and 324.
Further, since the metal box 38 covers the side opposite to the light emitting surface 244 of the light guide plate 24E, the number of components and the cost can be reduced by removing the reflection sheet.
Moreover, since it encloses with the metal box 38 which is an incombustible material, it can aim at the safety | security by preventing the burning of a component when a component abnormality occurs.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described.
FIG. 17 is an exploded perspective view of a guide lamp device according to a sixth embodiment of the present invention, and FIG. 18 is a perspective view showing an example in which the guide lamp device is attached to the ceiling. In addition, the same code | symbol is attached | subjected to the site | part which is common in the guide light apparatus concerning 1st-5th embodiment mentioned above, and the overlapping description is abbreviate | omitted.

  As shown in FIGS. 17 and 18, a guide light fixture 60 according to the sixth embodiment of the present invention incorporates the guide light devices 10 to 10E described above in the first to fifth embodiments. It can be used suspended from 12 grades.

As described above, according to the guide light fixture 60 described above, the first light emitting unit 31 having a large number of LEDs 311 is disposed below the guide light fixture 60, and the second light emitting unit 32 having a small number of LEDs 321 is disposed above. . As a result, the LED 311 having a large number is moved away from the ceiling 12 where heat is trapped, so that the junction temperature of the LEDs 311 and 321 can be reduced, and the lifetime can be increased and the reliability can be improved.
FIG. 18 illustrates the case where it is installed directly on the ceiling 12, but the same applies to the embedded type.

The guide lamp device and the guide lamp fixture of the present invention are not limited to the above-described embodiments, and appropriate modifications and improvements can be made.
For example, in each of the above-described embodiments, the case where the light emitting units 31 and 32 are arranged up and down is illustrated. However, the light emitting units 31 and 32 may be arranged right and left.
Moreover, although the display panel 26 which printed the design used for an escape exit guide light was used as the display panel 26, it is not limited to this, You may use other designs, such as a passage guide light.

Front view of the guide light device according to the first embodiment Exploded perspective view of the guide light device Configuration diagram of guide light device Exploded perspective view of a guide light device according to a second embodiment Front view, side view, and rear view showing an arrangement example of LEDs in the first light emitting unit Front view, side view, and rear view showing an arrangement example of LEDs in the first light emitting unit Front view, side view, rear view showing examples of LED arrangement in second light emitting section Front view, side view, rear view showing examples of LED arrangement in second light emitting section (A) And (b) is sectional drawing which shows the attachment structure of a light emission part The disassembled perspective view of the guide light apparatus concerning 3rd Embodiment of this invention. (A) And (b) is sectional drawing which shows the attachment structure of a light emission part (A), (b) are examples of display panel designs. Sectional view of the metal plate in FIG. The disassembled perspective view of the guide light apparatus concerning 4th Embodiment of this invention. The disassembled perspective view of the guide light apparatus concerning 5th Embodiment of this invention. (A) And (b) is sectional drawing which shows the attachment structure of a light emission part The disassembled perspective view of the guide light fixture concerning 6th Embodiment of this invention. The perspective view which shows the example which attached the guide light fixture to the ceiling

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Guide light apparatus 20 Display board 21 Display surface 22 Bright color part 23 Dark color part 24 Light guide plate 241 Emission surface 242, 243 Incident surface 244 Counter-emission surface 27 Metal plate 271 Plating 272 Bending part 31 1st light emission part 311 LED
313, 323 LED board 314, 324 LED board holder 32 2nd light emission part 321 LED
36 Metal frame 361 Inner side surface 38 Metal box 381 Inner side surface 42 Regular lighting circuit 43 Storage battery 45 Emergency lighting circuit 60 Guide light fixture

Claims (8)

The display surface is made of a light-transmitting material, has a display surface with a display for guidance by separately applying a light color portion and a dark color portion, and the display surface is made by light incident from a direction along the display surface. A display board that emits light;
A first light-emitting unit having one or a plurality of LEDs arranged linearly along the edge of the display surface so as to be incident on the light-colored portion from a direction along the display surface;
A second light emitting unit having one or a plurality of LEDs arranged linearly along the edge of the display surface so as to be incident on the dark color portion from a direction along the display surface;
A normal lighting circuit for lighting each LED of the first light emitting unit and the second light emitting unit by power supplied from the outside, and
A storage battery for storing power,
An emergency lighting circuit for lighting each LED of the first light emitting unit and the second light emitting unit using the storage battery as a power source when power is not supplied from the outside,
The first light emitting unit has higher brightness than the second light emitting unit,
The guide light device characterized in that the first light emitting unit and the second light emitting unit are disposed facing each other with the display surface interposed therebetween.   The guide light device according to claim 1, wherein the first light emitting unit is disposed below. The display plate has a light guide plate having a light incident surface on which light is incident, and an output surface and a light exit surface that are formed substantially orthogonal to the light incident surface and emit light from the light incident surface,
The first light emitting unit and the second light emitting unit have an LED substrate to which an LED is attached and an LED substrate holder that holds and fixes the LED substrate,
The metal plate is disposed at a position facing the opposite light emitting surface of the light guide plate, and the metal plate and the side surface portion of the LED substrate holder are in surface contact with each other. The guide light device described.   4. The guide light according to claim 3, wherein both ends of the metal plate are bent to form a U-shaped bent portion, and the LED substrate is disposed on the U-shaped inner surface side of the bent portion. apparatus.   The guide light device according to claim 3 or 4, wherein a surface of the metal plate facing the light guide plate is plated or painted white.   The metal frame is disposed so as to surround the outer peripheral portion of the side surface of the guide lamp device, and the LED board is disposed so as to be in surface contact with the inner side surface portion of the metal frame. The guide light device described in 1.   A metal box is disposed so as to surround the outer peripheral portion of the side surface of the guide lamp device and the anti-light-emitting surface of the light guide plate, and is installed so as to be in surface contact with the inner side surface portion of the metal box. The guide light device according to claim 3, wherein   A guide lamp apparatus incorporating the guide lamp apparatus according to claim 1.

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