JP5215623B2 - Light emitting module - Google Patents

Description

  The present invention relates to a light emitting module having a light emitting surface that emits light in a planar shape.

  2. Description of the Related Art Conventionally, there has been provided a light emitting module including a planar light emitting source that has a light emitting surface that emits light in a planar shape and emits light when power is supplied.

  As an example of this type of light emitting module, a substrate made of a glass material, a thin film-like first electrode formed on the front surface of the substrate, and an organic light emitting device that is provided on the first electrode and is energized in the thickness direction. An organic EL element having a light emitting layer made of a thin film and a thin film-like second electrode formed of a transparent electrode material (for example, ITO) so as to sandwich the light emitting layer between the first electrode There is what was used as. In this configuration, when a direct current is supplied between the first electrode and the second electrode, light from the light emitting layer is emitted forward through the second electrode, and the front surface of the second electrode becomes a light emitting surface that emits light in a planar shape. .

  A light emitting module using an organic EL element as a planar light source is thinner than a light source such as a fluorescent lamp or an incandescent lamp. Therefore, the light emitting module can be used differently from a fluorescent lamp or an incandescent lamp. It is proposed to incorporate a light emitting module of a kind into a baseboard and install it under the wall surface (for example, see Patent Document 1), or to install this kind of light emitting module on the mirror surface of a makeup mirror (for example, see Patent Document 2). Has been.

By the way, the applicant of the present application is to install the light emitting module including the planar light source as described above, for example, integrally with a building material such as a floor material or a wall material, and install it on the floor or wall of the building. It is considered to be used for various lighting in buildings.
JP-A-4-353162 JP 2001-286373 A

  However, when the light emitting module is installed on a floor or wall of a building, a load may be applied from an object such as a person or furniture to the outer surface of the light emitting module. There is a possibility that the light emitting module may be damaged by applying a large load locally.

  This invention is made | formed in view of the said reason, Comprising: It aims at providing the light emitting module which can prevent the damage by applying a load to an outer surface.

According to the first aspect of the present invention, there is provided a planar light emitting source that has a light emitting surface that emits light in a planar shape and emits light when supplied with power, and covers the light emitting surface side of the planar light emitting source made of a light-transmitting elastic material. A human body sensor that detects that a human body has approached the planar light source, and a protective member that disperses a load transmitted from the outer surface to the planar light source. When the approach of the human body is detected, the planar light source includes a first lighting control unit that changes the lighting state of the planar light source so that the planar light source is turned on with a notification pattern for notifying the approach of the human body. The planar light source is housed in a rectangular frame-shaped casing, and a power supply terminal for supplying power to the planar light source is provided along the inner surface of the casing in the thickness direction of the planar light source. It is characterized by extending over the whole area .

  According to this configuration, since the load transmitted from the outer surface of the protective member to the planar light source is dispersed inside the protective member due to the elasticity of the protective member, a large load is locally applied to the planar light source. The light emitting module can be prevented from being damaged by applying a load to the outer surface of the light emitting module.

In addition, according to this configuration, when a person approaches the light emitting module, the first lighting control unit changes the lighting state of the planar light source so that the planar light source is turned on according to the notification pattern. Is notified. As a result, for example, when the light emitting module is installed on the floor, a person approaching the light emitting module can be alerted to the presence of the light emitting module and not to step on the light emitting module. It is possible to avoid the light emitting module from being damaged by applying a load. Moreover, since the detection result of the human sensor is notified using the planar light source, an increase in the number of components for enabling the notification can be suppressed.

According to a second aspect of the present invention, in the first aspect of the invention, the planar light emitting source is installed with the protective member facing upward, a load sensor that detects a load acting from above, and a load sensor that exceeds a specified value. When the load is detected, the second lighting control unit that changes the lighting state of the planar light source so as to light the planar light source with a notification pattern for notifying that the load is applied is planar light emission. It is provided with the source integrally.

According to this configuration, when a person steps on the light emitting module, the second lighting control unit applies a load by changing the lighting state of the planar light source so that the planar light source is turned on according to the notification pattern . Inform you. As a result, it is possible to notify the person who is stepping on the light emitting module that the light emitting module is present and to be careful not to apply an excessive load to the light emitting module. It is possible to avoid damage. In addition, since the notification of the detection result of the load sensor is performed using the planar light source, an increase in the number of components for enabling the notification can be suppressed.

  The present invention has an advantage that the light emitting module can be prevented from being damaged by applying a load to the outer surface of the light emitting module by providing the protective member that covers the light emitting surface side of the planar light emitting source.

(Embodiment 1)
The light emitting module 1 according to this embodiment supplies a planar light source 2 that emits light when supplied with DC power, a housing 3 that houses the planar light source 2, and DC power to the planar light source 2. A pair of power supply terminals 4a and 4b is provided.

  As shown in FIG. 1, the planar light source 2 includes a plate-like rectangular substrate 5 made of an insulating material such as glass, and a thin film provided on the front surface (upper surface in FIG. 1) of the substrate 5. A first electrode 6, a light emitting layer 7 provided on the first electrode 6, and a thin film-like second electrode 8 sandwiching the light emitting layer 7 between the first electrode 6 are provided. The first electrode 6, the second electrode 8, and the light emitting layer 7 are formed in a rectangular shape that is slightly smaller than the substrate 5. Here, the light emitting layer 7 is an organic thin film that emits light when energized in the thickness direction, and the planar light emitting source 2 constitutes an organic EL element. The first electrode 6 and the second electrode 7 are made of a conductive material that is transparent to light from the light emitting layer 7, such as ITO (Indium Tin Oxide), which is a transparent electrode material. Thereby, the light emitted from the light emitting layer 7 can be extracted forward (upward in FIG. 1) through the second electrode 8.

  The casing 3 is formed in a rectangular frame shape, and is integrally coupled to one surface of the building material 9 so that one (back side) opening surface is closed with the building material 9 serving as a floor material of the building. The planar light source 2 is housed in the opening of the housing 3 in such a manner that the back surface of the substrate 5 (the bottom surface in FIG. Thus, the light emitting module 1 of this embodiment is integrated with the building material 9.

  Each of the power supply terminals 4 a and 4 b is disposed between the inner surface of the housing 3 and the planar light source 2 in the opening of the housing 3, and is electrically connected to each of the first electrode 6 and the second electrode 8. Connected to. The power supply terminals 4a and 4b are extended along the inner surface of the housing 3 over the entire area in the thickness direction of the substrate 5, and are one from the opening surface on the opposite side (front side) of the housing 3 to the building material 9. The part is exposed. In the example of FIG. 1, the right power supply terminal 4 a is connected to the first electrode 6, the left power supply terminal 4 b is connected to the second terminal 8, and the first electrode 6 and the second electrode 8 are opposed to each other. An insulating layer 10 made of an insulating material is formed between the surfaces.

  The light emitting module 1 having the above configuration constitutes a lighting fixture together with a lighting circuit (not shown) for supplying DC power between the first electrode 6 and the second electrode 8 via a pair of power supply terminals 4a and 4b. Although the lighting circuit may be incorporated in the housing 3 or the building material 9, the lighting circuit may be provided separately from the housing 3 and the building material 9. When DC power is supplied between the first electrode 6 and the second electrode 8 from the lighting circuit, the light emitting layer 7 of the light emitting module 1 emits light, and the light from the light emitting layer 7 is emitted forward through the second electrode 8. It becomes. Therefore, in the planar light source 2, the front surface of the second electrode 8 constitutes a light emitting surface 11 that emits light in a planar shape.

  By the way, the light emitting module 1 of this embodiment is provided with the protection member 12 arrange | positioned so that the light emission surface 11 side of the planar light emission source 2 may be covered. The protective member 12 is made of an elastic material that transmits at least light from the planar light source 2 and has a thickness dimension so that a load transmitted from the outer surface (front surface) to the planar light source 2 is dispersed inside. And material are set. In this embodiment, the protective member 12 made of silicone rubber having transparency to visible light is employed. The protection member 12 is disposed in the opening of the housing 3 so as to close the opening surface on the opposite side (front side) of the building material 9 in the housing 3. However, a gap through which the power feeding members 4a and 4b are inserted is secured between the protective member 12 and the inner surface of the housing 3 so that the power feeding members 4a and 4b are exposed on the front surface of the housing 3.

  The protective member 12 is formed in a flat plate shape and is disposed so as to face the light emitting surface 11 of the planar light source 2. Between the protective member 12 and the planar light source 2 in the housing 3, A sealing material 13 that fills a gap between the protective member 12 and the planar light source 2 is filled. The sealing material 13 used here is made of, for example, a silicone resin, and has a light-transmitting property with respect to at least light from the planar light source 2, similarly to the protective member 12. In this embodiment, the protective member 12 is bonded to the planar light source 2 using the sealing material 13 as an adhesive. However, the present invention is not limited to this configuration. For example, the protective member 12 and the housing 3 are fitted together. It is good also as a structure which fits the protection member 12 to the housing | casing 3 as a shape to perform.

  According to the light emitting module 1 having the above-described configuration, the load transmitted from the outer surface of the protective member 12 to the planar light source 2 is dispersed inside the protective member 12 due to the elasticity of the protective member 12. On the other hand, no load is applied locally. Accordingly, when a building material (floor material in this case) 9 in which the light emitting module 1 is integrally formed is installed on the floor of the building, for example, even if a person steps on the light emitting module 1, It is possible to prevent the light emitting module 1 from being damaged by the applied load. Moreover, since the protective member 12 is transparent to the light from the planar light source 2, it is possible to prevent the light emitting module 1 from being damaged without reducing the light extraction efficiency from the planar light source 2. it can.

  In addition, in this embodiment, although the example which forms the light emitting module 1 integrally in the building material 9 as a flooring was shown, the light emitting module 1 of this invention is not restricted to what is installed in a floor, For example, a wall or a ceiling Etc. may be installed.

(Embodiment 2)
The light emitting module 1 of the present embodiment is different from the light emitting module 1 of the first embodiment in that it is possible to notify that a human body has approached.

  That is, in this embodiment, as shown in FIG. 2, a human sensor 14 that detects that a human body is approaching, and the lighting state of the planar light source 2 is changed in response to the output of the human sensor 14 (first 1) the lighting control unit 15 and the planar light source 2 are provided integrally. The human sensor 14 is embedded in the housing 3 so as to be exposed from a part of the outer surface of the housing 3. Here, as the human sensor 14, a pyroelectric infrared sensor that detects a change in infrared rays emitted from the human body is used. However, the present invention is not limited thereto, and a sensor that detects the approach of the human body using, for example, an ultrasonic reflected wave. Etc. may be used.

  When the human sensor 14 detects the approach of the human body, the lighting control unit 15 lights the planar light source 2 with a predetermined notification pattern, and thereby notifies the detection result of the human sensor 14. . The lighting control unit 15 is embedded in the housing 3 so as to be adjacent to the human sensor 14. Here, when the human sensor 14 detects the approach of the human body, the lighting control unit 15 prioritizes the operation state (lighted or turned off) of the planar light source 2 at that time and emits the planar light with a notification pattern. Turn on source 2. It is conceivable that the lighting in the notification pattern by the lighting control unit 15 is, for example, blinking at a predetermined cycle or lighting with a light color having good visibility such as red.

  According to the configuration of the present embodiment described above, when a person approaches the light emitting module 1, the planar light source 2 is lit in the notification pattern to notify the approach of the human body. Accordingly, it is possible to alert a person approaching the light emitting module 1 to notify the presence of the light emitting module 1 and not to step on the light emitting module 1, and as a result, a load is applied to the light emitting module 1. It can be avoided. Therefore, it can avoid more reliably that the light emitting module 1 will be damaged by applying a load.

  As another example of the present embodiment, for example, as shown in FIG. 3, a speaker 16 is added to the housing 3, and the lighting control unit 15 turns on the planar light source 2 with a notification pattern. The detection result of the human sensor 14 may be notified by outputting a warning sound (or sound) from 16. In this case, there is an advantage that it becomes easier for a person approaching the light emitting module 1 to notice the presence of the light emitting module 1 compared to a configuration in which the planar light emitting source 2 is simply turned on with a notification pattern.

  Other configurations and functions are the same as those of the first embodiment.

(Embodiment 3)
The light emitting module 1 of the present embodiment is different from the light emitting module 1 of the first embodiment in that it is possible to notify that a load is applied to the planar light source 2.

  That is, in the present embodiment, as shown in FIG. 4, the load sensor 17 that detects the load applied to the planar light source 2 from the protective member 12 side and the lighting of the planar light source 2 in response to the output of the load sensor 17. A (second) lighting control unit 18 that changes the state is provided integrally with the planar light source 2. The load sensor 17 is provided in the form of being stacked on the entire back surface of the protective member 12 (the lower surface in FIG. 4) within the opening of the housing 3, and the load applied to substantially the entire front surface of the light emitting module 1. Can be detected. Here, as the load sensor 17, a piezoelectric element that converts an applied load into an electrical signal and outputs it is used, but other sensors may be used.

  When the load sensor 17 detects a load applied to the planar light source 2 by the load sensor 17, the lighting control unit 18 lights the planar light source 2 with a predetermined notification pattern. Is notified. The lighting control unit 18 is disposed between the protective member 12 and the inner surface of the housing 3 in the opening of the housing 3. Here, when the load applied to the planar light source 2 is detected by the load sensor 17, the lighting control unit 18 gives priority to the operation state (lit or extinguished) of the planar light source 2 at that time. The planar light source 2 is turned on. The lighting in the notification pattern by the lighting control unit 18 may be, for example, blinking at a predetermined cycle or lighting in a light color with good visibility such as red. Further, the lighting control unit 18 may change the notification pattern of the planar light source 2 according to the magnitude of the load applied to the load sensor 17. That is, it is conceivable that the blinking period is advanced as the load increases, or the emission color is changed according to the magnitude of the load.

  According to the configuration of the present embodiment described above, when a person steps on the light emitting module 1, the planar light source 2 is lit in the notification pattern to notify that a load is applied. Thereby, it is possible to notify the person who is stepping on the planar light source 2 of the presence of the light emitting module 1 and to be careful not to apply an excessive load to the light emitting module 1, It is possible to avoid applying an excessive load to the light emitting module 1. Furthermore, not only the human body but also an object such as furniture is placed on the light emitting module 1, the planar light source 2 is lit in the notification pattern, so that an object such as furniture is partially on the light emitting module 1. When placed in duplicate, it is possible to alert the surrounding people to notify the presence of the light emitting module 1 and move the object from the light emitting module 1. Therefore, it can avoid more reliably that the light emitting module 1 will be damaged by applying a load.

  As another example of the present embodiment, a speaker 16 is added to the housing 3, and the lighting control unit 18 lights the planar light source 2 with a notification pattern. The detection result of the load sensor 17 may be notified. In this case, there is an advantage that it becomes easier for people around the light emitting module 1 to notice the presence of the light emitting module 1 compared to a configuration in which the planar light emitting source 2 is simply turned on with a notification pattern.

  Other configurations and functions are the same as those of the first embodiment.

(Embodiment 4)
The light emitting module 1 of this embodiment is different from the light emitting module 1 of Embodiment 3 in that a back surface protection member 19 is provided on the back surface side (lower surface side in FIG. 5) as shown in FIG. The light emitting module 1 is used separately from the building material (floor material here) 9 and installed at a fixed position on the building material 9.

  The back surface protection member 19 is formed in a flat plate shape from an elastic material, and has a shape that closes one side (back side) of the housing 3 and covers the back surface of the housing 19 over the entire area. Here, the back surface protection member 19 is attached to the housing 3. Thus, when the light emitting module 1 is installed on the building material 9, the back surface protection member 19 is interposed between the housing 3 and the building material 9. In the present embodiment, the back protective member 19 made of silicone rubber that is transmissive to visible light is used in the same manner as the protective member 12, but translucency is not essential in the back protective member 19. .

  According to the configuration described above, when a load is applied to the outer surface (front surface) of the protective member 12, the load transmitted to the planar light source 2 is dispersed inside the protective member 12 due to the elasticity of the protective member 12, The reaction force acting on the planar light source 2 from the building material 9 is dispersed inside the back surface protection member 19 due to the elasticity of the back surface protection member 19, so that a load is locally applied to the planar light source 2. Absent. Further, since the back protection member 19 is used, the building material 9 is hardly damaged even when the light emitting module 1 is stepped on. Therefore, when the light emitting module 1 is moved, repairing of the damage to the building material 9 is unnecessary become.

  Other configurations and functions are the same as those of the third embodiment.

  In addition, the back surface protection member 19 demonstrated by this embodiment may be added with respect to the light emitting module 1 of Embodiment 1,2.

It is a schematic sectional drawing which shows the structure of Embodiment 1 of this invention. It is a schematic sectional drawing which shows the structure of Embodiment 2 of this invention. It is a schematic sectional drawing which shows the other structure same as the above. It is a schematic sectional drawing which shows the structure of Embodiment 3 of this invention. It is a schematic sectional drawing which shows the structure of Embodiment 4 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Light emitting module 2 Planar light source 11 Light emitting surface 12 Protective member 14 Human sensor 15 1st lighting control part 17 Load sensor 18 2nd lighting control part

Claims (2)

A planar light-emitting source that emits light when supplied with power and having a light-emitting surface that emits in a planar shape, and is arranged to cover the light-emitting surface side of the planar light-emitting source made of a light-transmitting elastic material. A protective member that disperses the load transmitted from the surface to the planar light source inside.
A human sensor that detects that a human body is approaching the planar light source, and that the planar light source is turned on with a notification pattern for notifying the human body when the human sensor detects the approach of the human body. And a first lighting control unit that changes a lighting state of the planar light emitting source integrally with the planar light emitting source ,
The planar light source is housed in a rectangular frame-shaped casing, and a power supply terminal for supplying power to the planar light source extends over the entire area in the thickness direction of the planar light source along the inner surface of the casing. A light emitting module characterized by being extended . The planar light-emitting source is installed with the protective member facing upward, and a load sensor that detects a load acting from above, and a notification that a load is applied when a load greater than a specified value is detected by the load sensor. 2. The light emitting source according to claim 1, further comprising a second lighting control unit that changes a lighting state of the planar light source so that the planar light source is turned on with a notification pattern for performing the above. of the light-emitting module.

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