JP6302641B2 - Lamp, lighting monitoring device and monitoring method thereof - Google Patents

Description

  The present invention relates to a lamp used in a field related to navigation or aviation, in particular, a navigation lamp mounted on a traveling body, a lighting monitoring device thereof, and a monitoring method.

  In order to ensure the safety of voyage and air traffic, it is obliged to attach a lamp to the hull or aircraft by law or regulation. For example, the light emission range at each installation position and the color of the emitted light Is defined in detail. In recent years, a lamp using, for example, a light emitting diode as a light source has been proposed, and proposals have been made regarding techniques such as luminous intensity and light distribution by the light emitting diode.

  The shiplight described in Patent Document 1 includes a light source composed of a large number of light emitting diodes arranged in a circular or arc shape in the horizontal direction, and a pair of disk-shaped and conical reflections disposed above and below the light source. With a mirror. The ship lamp includes a base unit in which a power supply circuit is accommodated, a trunk cylinder provided on the base unit and containing the light source and the reflecting mirror, and a top unit provided on the trunk cylinder. Have Between the base unit and the top unit, a light-shielding plate that shields light from the light source is provided in a necessary angular range in the circumferential direction (for example, paragraphs [0018] and [0018] in the specification of Patent Document 1). 0024], see FIG.

  By the way, a ship or the like navigating in an ocean area may conventionally use a double type lamp that is integrated with a service light and a spare light. For example, in the case of a double-type lamp using an incandescent bulb, a power supply line is connected to a control panel or the like installed outside the lamp and at a position away from the lamp. The control panel monitors the current flowing to the utility lamp side. If the current stops flowing, the control panel determines that the incandescent bulb on the utility lamp side is abnormal.

JP 2007-27052 A

  However, in the case of a lamp using a solid light emitting element such as a light emitting diode as a light source, the current flowing through the solid light emitting element is sufficiently smaller than the current flowing through the incandescent bulb. There is a problem that cannot be detected.

  An object of the present invention is to provide a lamp, in particular a navigation lamp, a lighting monitoring device and a monitoring method thereof, which can reliably detect an abnormality of a lamp including a light source unit having a solid light emitting element.

In order to achieve the above object, a lamp according to an embodiment of the present invention includes a plurality of light source units, a container, and monitoring means.
Each of the plurality of light source units includes a solid light emitting element.
The container integrally supports and houses the plurality of light source units.
When the monitoring unit detects a voltage of a first light source unit among the plurality of light source units and determines that the first light source unit is abnormal based on the detected voltage, the first light source unit The power supply is switched to a second light source unit different from the above.

  Since the monitoring means detects the voltage of the first light source unit among the plurality of light source units having the solid state light emitting elements, it is possible to reliably detect the occurrence of the abnormality of the first light source unit. The supply can be switched to the second light source unit.

  The monitoring unit may include a storage unit that stores a voltage threshold value of the first light source unit, and a determination unit that determines a state of the first light source unit based on the threshold value. The determination means can reliably determine the occurrence of an abnormality in the first light source unit based on the threshold value.

  The determination unit may perform the determination based on a comparison between a fluctuation of the voltage of the first light source unit from a reference value and the threshold value. In this way, by using the voltage fluctuation value from the reference value, even if there is a difference in the reference value due to, for example, the emission color (emission wavelength region) of the solid light emitting element, or a difference in the reference value due to individual differences, Judgment processing can be performed regardless of the difference.

  The monitoring means stores the detected voltage when the light source unit is determined to be normal as a first voltage value, and then stores the second voltage value that is the voltage of the first light source unit. And the state of the first light source unit may be determined based on the first voltage value and the second voltage value.

  Accordingly, the monitoring unit can determine whether or not the first light source unit is normal based on the second voltage value with respect to the first voltage that is the normal value. For example, when the lamp is turned off and then turned on again, the determination process based on the current second voltage value can be performed using the first voltage value which is a normal value.

  The monitoring means may use a normal voltage detected before that as the current detection voltage instead of the detected voltage when it is determined that the light source unit is abnormal. Thereby, the monitoring means can always use a normal detection voltage.

  The lamp may be further provided with a control panel housed in the housing body and having the function of the monitoring means. By providing the control panel in the lamp, a compact lamp configuration including the control panel can be realized.

A lighting monitoring apparatus according to an aspect of the present invention includes a detection unit, a determination unit, and a switching unit.
The detection means detects the voltage of the first light source unit among the plurality of light source units that are integrally supported and accommodated in the lamp housing and each have a solid light emitting element.
The determination unit determines a state of the first light source unit based on the detected voltage.
When it is determined that the first light source unit is abnormal, the switching unit switches power supply to a second light source unit different from the first light source unit among the plurality of light source units.

A lighting monitoring method according to an aspect of the present invention detects a voltage of a first light source unit among a plurality of light source units each having a solid light-emitting element, which is integrally supported and accommodated in a container housing. Including that.
A state of the first light source unit is determined based on the detected voltage.
When it is determined that the first light source unit is abnormal, power supply is switched to a second light source unit different from the first light source unit among the plurality of light source units.

The navigation light which concerns on 1 form of this invention comprises a light source part, a container, and a monitoring means.
The light source unit includes a solid light emitting element.
The container accommodates the light source unit.
The monitoring means detects the voltage of the light source unit and monitors the state of the light source unit based on the detected voltage.

  Since the navigation light monitoring means detects the voltage of the first light source unit among the plurality of light source units having the solid state light emitting elements, it is possible to reliably detect the occurrence of an abnormality in the first light source unit.

  As mentioned above, according to this invention, abnormality of a lamp provided with the light source part which has a solid light emitting element can be detected reliably.

FIG. 1 is a perspective view showing the front side of a single-type ship lamp as the lamp according to the first embodiment of the present invention. FIG. 2 is a perspective view showing the back side of the lamp shown in FIG. FIG. 3 is an exploded perspective view of the lamp shown in FIG. FIG. 4 is a plan view of the lamp shown in FIG. FIG. 5 is a partial schematic cross-sectional view taken along line AA in FIG. FIG. 6 is an exploded perspective view of the light source unit. FIG. 7 is a perspective view showing the outer cover. FIG. 8 is a plan view of the outer cover shown in FIG. FIG. 9 is a plan view of the container as viewed from the lower surface side of the base cover. FIG. 10 is a plan view of the base as viewed from the upper surface side. FIG. 11 is a perspective view showing a double type lamp according to the second embodiment of the present invention. FIG. 12 is a perspective view showing the back side of the double type lamp shown in FIG. FIG. 13 is an exploded perspective view of the lamp shown in FIG. FIG. 14 is a cross-sectional view of the lamp shown in FIG. FIG. 15 is a block diagram illustrating an electrical configuration of the lighting monitoring device. FIG. 16 is a flowchart showing main processing of the lighting monitoring apparatus. FIG. 17 is a flowchart showing a process after the power is turned on to the lamp before the main process shown in FIG. 16 is executed. FIG. 18 shows an example of the arrangement of ship lights on the hull.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1. General description of ship lights

As a lamp according to an embodiment of the present invention, a boat lamp installed on a hull will be described. FIG. 18 shows an example of the arrangement of ship lights on the hull. Generally, the hull 1000 includes a bow lamp 1001, a stern lamp 1002, a central mast lamp 1003, and a lamp 1004 including a starboard lamp and a port lamp. The range of light emitted by these various lamps conforms to the Ship Safety Law. The difference in size of the ship, different number of installed ship lamp, for example small size of the ship, there is a case where one Gento the left and right Gento are integrated is used.

  Specifically, the illuminating range of the bow lamp 1001 and the central mast lamp is defined as 225 ° centering on the bow direction, and the radiating range of the stern lamp 1002 is defined as 135 ° centering on the stern direction. . Further, the illumination range of the lantern 1004 is defined as 112.5 ° from the bow direction to the left and right, respectively.

  There are two types of ship lights: a single type with a service light only, and a double system with a service light and a spare light. For ships navigating the pelagic area, double-type ship lights are mainly used. Hereinafter, a single type lamp will be described first, and then a double type lamp will be described.

  2. Single-type lamp configuration

1) Overall Configuration of Lamp Device FIG. 1 is a perspective view showing a front side of a single ship lamp as a lamp device according to a first embodiment of the present invention. FIG. 2 is a perspective view showing the back side of the lamp device 100 shown in FIG. FIG. 3 is an exploded perspective view of the lamp device 100. Here, starboard lamp is taken as an example. The lamp device 100 is mainly used with the z direction as the vertical direction (vertical direction) in FIG. In the following description, the z direction is the vertical direction, and the x and y directions are the biaxial directions perpendicular to each other in the horizontal plane.

  The lamp device 100 includes a light source unit 10 (see FIG. 3), a housing 50 that houses the light source unit 10, a louver 90 that is attached to the housing body 50 and defines a range of light emitted from the lamp device 100, and a housing body. And end members 60 respectively connected to the upper and lower sides of 50.

  The container 50 includes, for example, a translucent outer cover (cover) 20 and a base cover 30 attached to the outer cover 20. The end member 60 includes, for example, a lid 70 attached to the upper part of the outer cover 20 and a base 80 attached to the lower part of the base cover 30. The base 80 is a part for mainly attaching the lamp 100 to the hull. The lid 70 is provided with a handle 71. Each component of the light source unit 10, the outer cover 20, the base cover 30, the lid 70, and the base 80 has a generally cylindrical shape.

  FIG. 4 is a plan view of the lamp device 100. FIG. 5 is a partial schematic cross-sectional view taken along line AA in FIG. FIG. 6 is an exploded perspective view of the light source unit 10.

  An end portion (lower end in the drawing) of the outer cover 20 is opened, and one end (upper end in the drawing) facing the one end of the base cover 30 is opened. The outer cover 20 is provided with a projecting portion 21 projecting outward (see, for example, FIG. 8), and the base cover 30 also has a projecting shape substantially corresponding to the shape of the projecting portion 21. A part 31 is provided. A plurality of, for example, six screw holes 21a and 31a are formed in the projecting portions 21 and 31, respectively. The outer cover 20 and the base cover 30 are connected by the projecting portions 21 and 31 coming into contact with each other and fastened with the screw N1. Further, a seal ring 59 shown in FIGS. 3 and 5 is interposed between the projecting portions 21 and 31.

  An opening 22 is formed at the upper center of the outer cover 20, and a valve (not shown) for adjusting the air pressure in the container 50 is provided on the opening 22 through the opening 22.

  As shown in FIG. 3, the louver 90 includes a main body portion 93 that forms a part of a cylindrical body and has a light shielding property, and a blade portion 95 provided so as to spread from the main body portion 93. The louver 90 is attached so as to be sandwiched between the lid 70 and the outer cover 20. Matters relating to the attachment of the louver 90 to the lamp body will be described in detail later.

  As shown in FIG. 4 and the like, a reference mark 72 serving as a reference for the orientation of the lamp 100 is attached to the upper surface of the lid 70. The fiducial mark 72 is preferably formed integrally when the lid 70 is molded. However, in addition to such a method, the fiducial mark 72 may be connected to the lid 70 by an adhesive or ultrasonic bonding means after the lid 70 is formed. Good. For example, in the present embodiment, the lamp 100 can be installed at each position of the hull so that the reference mark 72 is directed in the bow direction.

2) Configuration of Light Source Unit As shown in FIGS. 5 and 6, the light source unit 10 includes a light emitting diode (LED) 15 that is a solid light emitting element as a light source, a reflector 12 that reflects light from the LED 15, and the LEDs 15. And an inner cover 13 as a support that integrally supports the reflector 12.

For example, a plurality of LEDs 15 are mounted on the light source substrate 11, and are arranged at equiangular intervals on the circumference around the reflector 12. Each LED 15 is provided, for example, six pieces, each generating green light. If the lamp is a port light, the LED 15 generates red light, and if it is another ship light, it generates white light. Some lamps generate yellow light.
Hereinafter, for convenience of explanation, an axis parallel to the vertical axis (z axis) passing through the center of the circle in which the plurality of LEDs 15 are arranged is referred to as a “light source central axis”.

  The reflector 12 includes a flat plate-like fixing portion 122 that is placed and fixed on the light source substrate 11, a reflecting portion 124 that is provided around the fixing portion 122, and a mounting flange 126 that is provided around the reflecting portion 124. And have.

  The inner cover 13 is a part formed by, for example, integral molding, is made of a translucent resin material, and has a substantially cylindrical shape. As shown in FIG. 5, the inside of the inner cover 13 is divided into two regions, a light emission region 13 </ b> A and a substrate placement region 13 </ b> B, by a partition plate 131, and the cross section of the inner cover 13 has a substantially H shape. In the drawing, the light emitting region 13A, which is the upper region, is mainly provided with the light source substrate 11 and the reflecting portion 124 of the reflector 12. For example, two circuit boards (a power supply board B1 and a control board B2 described later) are arranged in the board arrangement area 13B, which is the lower area.

  An upper opening 132 and a lower opening 133 are formed by opening the upper end of the light emitting region 13A of the inner cover 13 and the lower end of the substrate arrangement region 13B, respectively. An upper flange 134 is provided around the upper opening 132, and a plurality of protrusions 134 a are provided at predetermined angular positions around the z axis in the upper flange 134. As shown in FIG. 6, these protrusions 134 a engage with holes 126 a provided in the attachment flange 126, and the lower surface of the attachment flange 126 of the reflector 12 is placed on the upper surface of the upper flange 134 of the inner cover 13. The

  The macro shape of the reflecting portion 124 (the reflecting surface which is the surface thereof) of the reflector 12 is a quadratic curved surface (for example, a parabolic surface or an elliptical surface). That is, the macroscopic shape of the cross section of the reflecting portion 124 (reflective surface) as seen in the cross section shown in FIG.

  The reflector 12 and the light source substrate 11 are relatively positioned so that each LED 15 is arranged on the focal point of the quadratic curve of such a reflection unit 124. Specifically, after the light source substrate 11 is positioned and fixed on the fixing base 131 a provided on the partition plate 131, a flat portion that forms the lower surface of the fixing portion 122 of the reflector 12 is mounted on the light source substrate 11. Placed. And the reflector 12 and the light source board | substrate 11 are positioned by the screwing of several places, for example, three places P1 (refer FIG. 6).

  The fixing part 122 of the reflector 12 and the fixing means for the light source substrate 11 may be mechanical engaging means different from screws or an adhesive.

  As described above, the positioning of the reflector 12 and the light source substrate 11 is mainly performed by the fixing portion 122, and the engagement between the protrusion 134a of the upper flange 134 and the hole 126a of the mounting flange 126 is a secondary or auxiliary positioning. It becomes.

  With the arrangement of the LED 15 and the reflector 12 as described above, the amount of light emitted in the horizontal direction can be increased.

  On the other hand, as shown in FIG. 6, the reflector 124 of the reflector 12 has a plurality of convex surfaces 124 a provided concentrically from a microscopic viewpoint. These convex surfaces 124a are surfaces formed convex toward the light source substrate 11 side. The radial widths of these convex surfaces 124a become smaller toward the light source central axis.

  Thereby, since each convex surface 124a can reflect so that the light from LED15 may each be diffused, it can radiate | emit uniform light in the whole reflection part 124. FIG. That is, even when an LED that is a point light source is used, uniform light can be emitted from the entire reflecting portion 124 that is a set of convex surfaces 124a.

  As shown in FIG. 5, the power supply board B1 and the control board B2 are arranged in the board arrangement region 13B of the inner cover 13 as described above. Specifically, these circuit boards are supported by a support portion formed so as to protrude from the partition plate 131 and fixed by screws.

  The power supply board B1 supplies power to the LED 15. The control board B2 controls the driving of the LED 15 by the power supply board B1 and monitors the operation of the LED 15. Note that the power supply board B1 and the control board B2 do not have to be separate from each other as described above, and may be configured by one board.

  The side wall that forms the inner cover 13 includes a wall portion 136 that forms the light emission region 13A and a wall portion 137 that forms the substrate arrangement region 13B. The wall portion 137 forming the substrate arrangement region 13B may have a surface formed like a plurality of chamfering processes in order to make the inside of the substrate arrangement region 13B less visible (or invisible), or The wall 137 may be colored.

  A lower flange 135 formed in a polygonal shape, for example, a substantially hexagonal shape when viewed in the z direction, is provided at an end portion (lower end in FIG. 5) of the wall portion 137 forming the substrate arrangement region 13B. At least three of the holes 135a provided at the six corners of the lower flange 135 are screw holes. As shown in FIG. 3, three screw hole portions 39 are provided on the bottom of the base cover 30 at positions corresponding to the three screw holes. Thereby, the inner cover 13 is fixed to the base cover 30 with the screw (see FIG. 5) N2. Thereby, the light source unit 10 is attached to the container 50 including the base cover 30.

  The light source board 11, the power supply board B1, and the control board B2 are connected by a cable group 16. Two attachment holes 38 for connecting two harnesses 58 (see FIGS. 3 and 5) are provided at predetermined locations on the side peripheral wall 32 of the base cover 30. The cable group 17 for external connection such as the power supply board B1 is drawn out of the lamp device 100 through these harnesses 58.

3) Attaching the louver FIG. 7 is a perspective view showing the outer cover 20, and FIG. 8 is a plan view thereof. The outer cover 20 constituting a part of the container 50 has a side peripheral portion 23 that mainly emits light from the light source unit 10 to the outside. In addition, the outer cover 20 has the protruding portion 21 that protrudes outward from the side peripheral portion 23 as described above. The protruding portion 21 has an attachment region 25 to which the louver 90 is attached.

  For example, the attachment region 25 includes a circumferential groove 26 and a locking groove 27. The circumferential groove 26 is a groove that is provided over the entire circumference of 360 ° along the outer shape of the side circumferential portion 23 and in which the main body 93 of the louver 90 is disposed. The locking grooves 27 are respectively connected to the circumferential grooves 26 at predetermined angular positions around the circumferential grooves 26, and engage with the blade portions 95 of the louver 90. When the blade portion 95 of the louver 90 is engaged with two predetermined locking grooves 27 among the plurality of locking grooves 27, the movement of the louver 90 around the z-axis is substantially restricted and locked.

  The louver 90 has an engagement rib 94 that can be engaged with the locking groove 27 as shown in FIG.

  Similarly to the outer cover 20, the lid 70 also has a mounting region 75 for the louver 90 including a circumferential groove 76 (see FIG. 5) and a locking groove 77 (see FIGS. 1 and 2). Specifically, the lid 70 has an attachment region 75 at the outer peripheral edge at the lower end. In each of the attachment regions 25 of the outer cover 20 and the lid 70 in FIG. 5, only the circumferential grooves 26 and 76 are drawn depending on the cross-sectional positions, and the locking grooves 27 and 77 are not drawn.

  The arrangement of the locking grooves 77 of the lid 70 is the same angle as that of the locking grooves 27 of the outer cover 20. Accordingly, the louver 90 is attached to the lamp body such that the attachment region 25 of the outer cover 20 and the attachment region 75 of the lid 70 sandwich the louver 90. Thus, by providing the plurality of locking grooves 77 at predetermined angular positions in the circumferential direction, the mounting angle of the louver 90 can be selected according to the angular positions. That is, the outer cover 20 having one common structure can realize a plurality of types of lamp configurations according to the installation position on the hull.

4) Connection structure of container and base (first connection structure)
FIG. 9 is a plan view of the container 50 as viewed from the lower surface side of the base cover 30. FIG. 10 is a plan view of the base 80 as seen from the upper surface side.

  The base cover 30 and the base 80 are connected by the following connection structure (first connection structure). As shown in FIG. 9, the flat plate portion 34 provided in the base cover 30 has a plurality of screw hole portions 36 provided at predetermined positions as described above. For example, the four screw holes 36 are arranged point-symmetrically around the center position of the base cover 30 (for example, coincident with the light source central axis). In the z-direction of the container 50, the side on which the flat plate portion 34 of the base cover 30 is provided is the first side, and the side on which the flat plate portion 24 of the outer cover 20 is provided is the second side.

  On the other hand, as shown in FIG. 10, the base 80 also has four screw hole portions 86 provided at positions corresponding to those screw hole portions 36. These screw hole portions 86 are formed in the flat plate portion 84 of the base 80. As shown in FIG. 3, the bolts N <b> 3 (see FIG. 5) are tightened by these four screw holes 36 and 86, whereby the container 50 and the base 80 are connected and fixed.

  Such a first connection structure can connect two containers, specifically two base covers 30, like a lamp device 200 according to a second embodiment to be described later.

  5) Connection structure of container and lid (second connection structure and third connection structure common to the same)

  The container 50 and the lid 70 are connected by the following connection structure (second connection structure). As shown in FIG. 4, the lid 70 has a plurality of screw hole portions 79 provided at predetermined positions. For example, four screw hole portions 79 are arranged symmetrically with respect to the center position of the lid 70 (for example, coincident with the light source central axis).

  On the other hand, as shown in FIG. 8, the flat plate portion 24 of the outer cover 20 also has four screw hole portions 29 provided at positions corresponding to the screw hole portions 79. As shown in FIG. 3, the container 50 and the base 80 are connected and fixed by tightening the bolts at these four screw holes 79 and 29.

  The flat plate portion 84 of the base 80 is provided with a third connection structure having four screw hole portions 89 on the outer side in the radial direction from the arrangement of the screw hole portions 86. These screw hole portions 89 coincide with the arrangement of the screw hole portions 29 (and the screw hole portions 79 of the lid 70) of the outer cover 20 shown in FIG. That is, the third connection structure has a common structure with the second connection structure.

  In this way, the third connection structure having a common structure with the second connection structure allows the use of a common component with the single lamp 100 as described in the second embodiment. The structure of the lamp device 200 can be realized.

  3. Second embodiment

  FIG. 11 is a cross-sectional view showing a lamp according to the second embodiment of the present invention. In the following description, the same members, functions, and the like included in the lamp according to the first embodiment will not be described or will be mainly described.

1) Overall Configuration of Lamp Device FIG. 12 is a perspective view showing the back side of the double lamp device 200 shown in FIG. FIG. 13 is an exploded perspective view of the lamp device 200. FIG. 14 is a cross-sectional view of the lamp device 200. A star lamp is used as an example of the double lamp 200 according to the present embodiment.

  The double lamp 200 includes a first container 50A and a second container 50B connected to the lower part of the first container 50A. Further, the lamp 200 includes a lid 70 as one of end members connected to the upper portion of the first housing 50A and one of end members connected to the lower portion of the second housing 50B. Base 80 and louvers 90 attached to the containers 50A and 50B, respectively.

The first container 50A and the second container 50B are arranged in a symmetric posture in the vertical direction (with respect to the xy plane). The first container 50 </ b> A is a container having a configuration similar to that of the first embodiment, and includes the outer cover 20 and the base cover 30. The second containment body 50B has substantially the same configuration as this, including the outer cover 20 and the base cover 30, in that the base cover 30 of the second housing member 50 B are two harnesses 58 not provided , Different from the first container 50A. The 2nd container 50B is not provided with the attachment hole to which two harnesses are attached.

  The first container 50A and the second container 50B accommodate the light source units 10 each including a plurality of LEDs similar to those according to the first embodiment.

  The flat plate portion 34 of the base cover 30 of each of the first container 50A and the second container 50B is provided with the same first connection structure as that shown in FIG. That is, as shown in FIG. 13, the base covers 30 are connected to each other by bolting the lower surfaces of the base covers 30 at the positions of the four screw holes 36 described above. In this case, the first connection structure functions as a connection structure.

  A sheet-like sealing material 57 (see FIG. 13) is interposed between the two base covers 30.

  On the other hand, the second connection structure for connecting the lid 70 and the outer cover 20 has a common structure with the third connection structure provided in the base 80 described in the first embodiment. That is, the arrangement of the four screw hole portions 89 of the base 80 is the same as that of the four screw hole portions 79 of the lid 70 (four screw hole portions 29 of the outer cover 20). With such a connection structure, as shown in FIGS. 11 to 13, the outer cover 20 of the second container 50 </ b> B can be connected to the base 80.

  The attachment structure of the louver 90 provided in the upper part is the same as the attachment structure of the louver 90 of the single type lamp 100 described in the first embodiment.

  The louver 90 provided in the lower part is attached by being sandwiched between the outer cover 20 and the base 80 of the second container 50B. The base 80 also has an attachment region 85 on the outer periphery thereof, like the attachment region 25 and the like. Specifically, the attachment region 85 is a groove formed between the circumferential protrusion 82 and the side periphery 23 of the outer cover 20 in a state where the flat plate portion 84 of the base 80 and the outer cover 20 are connected. , And a locking groove 87 is included. The main body portion 93 of the louver 90 is disposed in the groove-shaped region 88, and the blade portion 95 is locked at two positions of the locking grooves 87.

2) Lighting Monitoring Device a) Configuration of Lighting Monitoring Device Next, a lighting monitoring device according to an embodiment of the present invention will be described. FIG. 15 is a block diagram showing an electrical configuration of the lighting monitoring device.

The lighting monitoring device 150 includes a power supply unit 151, a control unit 155, and a drive unit 156. The main lamp 11A is, for example, a light source unit (for example, a first light source unit that is the light source substrate 11 on which the LEDs 15 are mounted) housed in the upper first housing 50A. Preliminary lamp 11B is, for example, a second container 50 a light source unit which is accommodated in B the lower (the second light source unit). These may be opposite to each other.

  The power supply unit 151 controls the electric power from the outside to generate a DC voltage and outputs it to the drive unit 156 and the control unit 155.

  The control unit 155 includes an A / D converter 152, a CPU (Central Processing Unit) 153, and a storage unit 154. The storage unit 154 is typically configured by a volatile memory, a nonvolatile memory, or the like.

  In other words, at least the voltage of the main lamp 11A (for example, the forward voltage, which is the operating voltage of the LED 15) of both the light source units is input to the A / D converter 152, and this is digitally converted. Specifically, the A / D converter 152 acquires the voltages of the main lamp 11A and the auxiliary lamp 11B that are both light source units. In this case, the A / D converter 152 (and a voltage detection resistor (not shown), etc.) function as voltage detection means.

  In the present embodiment, six LEDs 15 are connected in series on the light source substrate 11, the total voltage of these six LEDs 15 is detected, and the A / D converter 152 acquires the total voltage. .

  The drive unit 156 drives the main lamp 11A and the spare lamp 11B in accordance with a control signal from the CPU 153. In the present embodiment, as will be described later, the power supply is switched from the main lamp 11A to the standby lamp 11B under a predetermined condition.

  The cable group 19 connected to the light source substrate 11 of the light source unit 10 accommodated in the second accommodating body 50B is connected to the power supply substrate B1 via the central hole 34a provided in the flat plate portion 34 of both base covers 30. Is done.

  The power supply unit 151 is a function mainly mounted on the power supply board B1. The control unit 155 and the drive unit 156 are functions mainly mounted on the control board B2. In this case, the control board B2 functions as a control panel. For example, the drive unit 156 may be mounted on the power supply board B1, and the aspect of hardware is not limited. Thus, by providing the control board B2 in the housing of the lamp 200, a compact lamp structure including the control board B2 can be realized.

b) Operation of the lighting monitoring device In this lighting monitoring device 150, the CPU 153 basically determines the normal / abnormal state of the main lamp 11A based on the detected voltage of the main lamp 11A (determination means). When it determines with there being, the process which switches supply of electric power to the backup light 11B is performed. In this case, the control unit 155 functions as a monitoring unit.

FIG. 16 is a flowchart showing the main processing of the lighting monitoring device 150. In step 101, the CPU 153 sets the normal voltage V _{f_day} of the main lamp 11A detected in the process shown in FIG. 17 described later as a reference voltage value (reference value) V _freg . The meaning of step 101 will be described later. The reference value V _freg is, for example, the forward voltage of the LED.

The CPU 153 acquires the voltage V _{f of the} main lamp 11A from the A / D converter 152 (step 102). The CPU 153 determines whether or not the difference | V _freg −V _f | between the reference value V _freg and the detected voltage V _f is smaller than the threshold value β stored in the storage unit 154 in advance (step 103). That is, the CPU 153 monitors the fluctuation of the voltage V _f of the main lamp 11A from the reference value V _freg . If the fluctuation value is smaller than the threshold value β, the main lamp 11A is in a normal state, and the process returns to step 101.

  For example, if the total voltage of the six LEDs 15 is about 20 (V), the threshold value β can be set to about 2 (V).

  When the fluctuation value is equal to or greater than the threshold value β, the CPU 153 determines that an abnormality has occurred in the main lamp 11A, and outputs an abnormality signal, for example (step 104). In this case, since the voltage of the main lamp 11A is too high, it can be estimated that an open failure has occurred.

  Then, the CPU 153 stops driving the main lamp 11A (step 105) and starts driving the spare lamp 11B (step 106). That is, the CPU 153 stops the power supply to the main lamp 11A and switches to the power supply to the standby lamp 11B. In this case, the CPU 153 and the drive unit 156 function as switching means.

As described above, the lighting monitoring device 150 according to the present embodiment does not detect the current flowing through the incandescent bulb as in the prior art, but detects the voltage V _{f of the} light source unit having the solid light emitting element. The occurrence of abnormality can be reliably detected.

  FIG. 17 is a flowchart showing a process after the power is turned on, for example, the lamp 200 (that is, the main lamp 11A) before the main process shown in FIG. 16 is executed.

For example, the CPU ₁₅₃ reads the voltage V _f stored immediately before the power to the main lamp 11A of the lamp 200 is turned off, that is, before the power is turned on, as the previous voltage V _{f_day} and reads this as the storage unit 154. (Step 201). The CPU 153 obtains, from the A / D converter 152, the voltage V _f of the main lamp 11A detected for the first time after turning on the power (step 202).

The CPU 153 determines whether or not the difference | V _{f_day} −V _f | between the previous voltage V _{f_day} and the voltage V _f is smaller than the threshold α stored in the storage unit 154 in advance (step 203).

When the difference | V _{f_day} −V _f | is smaller than the threshold value α, the _{CPU 153} determines that the main lamp 11A is in a normal state, and overwrites and saves the previous voltage V _{f_day} (first voltage value) (step). 204). On the other hand, if the difference | V _f — _day −V _f | is equal to or greater than the threshold value α, the CPU 153 determines that an abnormality has occurred in the main lamp 11A, and instead of the voltage at the time of abnormality, the CPU 153 Let V _{f_day} be the current detection voltage.

Then, the CPU 153 starts the main processing described with reference to FIG. 16, and sets the stored V _{f_day} as the reference value V _freg (step 101).

In the case of ship lights, basically there is a cycle in which the lights are turned off during the day when the visibility is good and the lights are turned on at night. In this case, by executing the process shown in FIG. 17, the CPU 153 changes the state of the main lamp 11A based on the detected voltage value V _f of the main process with respect to the voltage V _{f_day} stored as the normal value last time. Can be determined.

Further, in this embodiment, when it is determined in step 204 that the main lamp 11A is in an abnormal state, the previous normal voltage V _{f_day} is treated as the current voltage, so the CPU 153 always has a new detected voltage. Values can be used.

The lighting monitoring device 150 according to the present embodiment _uses a voltage fluctuation value from the reference value V _freg as in steps 103 and 203, for example. Therefore, even if there is a difference in the reference value depending on the light emission color (light emission wavelength region) of the LED or a difference in the reference value due to the individual difference of the LED, the determination process can be performed regardless of the difference.

  The inside of the inner cover 13 of the light source unit 10 according to the present embodiment is divided into a light emitting region 13A and a substrate arrangement region 13B (see FIG. 5), and substrates other than the light source substrate 11 are arranged in the substrate arrangement region 13B. The Therefore, in the lamp device 200 shown in FIG. 14, the substrate placement regions 13B of the upper and lower inner covers 13 can be placed adjacent to each other. That is, the two board | substrate arrangement | positioning area | regions 13B adjoin and can make one space area | region through the center hole 34a. As a result, the wiring design of the cables becomes easy in the board arrangement region 13B. This also facilitates assembly of the lamp 200.

  4). Other embodiments

  The present invention is not limited to the embodiment described above, and other various embodiments can be realized.

  The lighting monitoring device according to the above embodiment is applied to the double type lamp 200 according to the second embodiment having two light source units. However, the basic system of the lighting monitoring device can also be applied to a single lamp 100 having one light source unit (light source substrate 11) as in the first embodiment (however, the single lamp is not limited thereto). The vessel is a shiplight or aircraft light).

  In this case, the lighting monitoring device may monitor the state of the light source unit by a method such as steps 101 to 104 or steps 104 to 105 shown in FIG. In this case, the lighting monitoring apparatus can also execute the processing shown in FIG.

In step 103 of FIG. 16, it is assumed that an abnormality has occurred when the variation value | V _freg −V _f | is equal to or greater than the threshold value β. However, the CPU 153 does not monitor the fluctuation value, but determines that an abnormality has occurred in the main lamp 11A when the detection voltage V _f of the main lamp 11A is equal to or higher than the threshold γ (= threshold β + reference value V _freg ). Also good.

Alternatively, the CPU 153 may determine that the abnormality due to, for example, a short failure has occurred in the main lamp 11A when the detected voltage V _f of the main lamp 11A is smaller than the threshold δ, instead of monitoring the fluctuation value.

  The light source substrate 11 according to the above embodiment has a plurality of LEDs 15 mounted thereon, but may have a single LED mounted thereon.

  Although the lamp device according to each of the above embodiments has one or two light source units, a lamp device having three or more light source units can be realized. In this case, switching may be performed sequentially.

  The shape, structure, and function of the housing that covers the light source unit and the end member connected to the housing are not limited to the above-described embodiments, and may be in any form or may be a known form.

  In each of the above embodiments, the number of harnesses 58 connected to the base cover 30 is two, but may be one. In the double lamp 200 according to the second embodiment, the harness 58 and the attachment hole 38 for attaching the harness 58 may be provided in both of the two base covers 30.

  In the above description, the lamp is described as a ship lamp, but it can also be used as a lamp mounted on an aircraft body or a marker lamp.

  It is also possible to combine at least two feature portions among the feature portions of each embodiment described above.

B1 ... Power supply board B2 ... Control board 10 ... Light source unit 11A ... Main lamp 11B ... Spare lamp 15 ... LED
DESCRIPTION OF SYMBOLS 50 ... Container 50A ... 1st container 50B ... 2nd container 100, 200 ... Lamp 150 ... Lighting monitoring apparatus 155 ... Control part 156 ... Drive part

Claims (7)

A plurality of light source units each having a solid state light emitting element;
A container that integrally supports and houses the plurality of light source parts;
When the voltage of the first light source unit among the plurality of light source units is detected and it is determined that the first light source unit is abnormal based on the detected voltage, a second different from the first light source unit. comprising a monitoring means for switching the supply of power to the light source unit,
The monitoring unit includes a storage unit that stores a threshold value of a voltage of the first light source unit, and a determination unit that determines a state of the first light source unit based on the threshold value. The detected voltage when it is determined that the unit is normal is stored as a first voltage value. After the storage, the second voltage value, which is the voltage of the first light source unit, is detected, and the first A lamp that determines the state of the first light source unit based on the voltage value of the first and second voltage values . The lamp according to claim 1 ,
The said determination means performs the said determination based on the comparison with the fluctuation | variation from the reference value of the voltage of a said 1st light source part, and the said threshold value. The lamp according to claim 1 or 2 ,
The monitoring means replaces the detected voltage when the light source unit is determined to be abnormal, and uses a normal voltage detected before that as the current detection voltage. A plurality of light source units each having a solid state light emitting element;
A container that integrally supports and houses the plurality of light source parts;
When the voltage of the first light source unit among the plurality of light source units is detected and it is determined that the first light source unit is abnormal based on the detected voltage, a second different from the first light source unit. monitoring means for switching the supply of power to the light source unit,
A lamp unit comprising a control panel housed in the housing body and having the function of the monitoring means . The lamp according to any one of claims 1 to 4 ,
A lamp device further comprising a control panel housed in the housing body and having the function of the monitoring means. Among a plurality of light source units that are integrally supported and accommodated in the lamp housing, each of which has a solid state light emitting element, a detecting means for detecting the voltage of the first light source unit;
Determination means for determining a state of the first light source unit based on the detected voltage;
A switching unit that switches supply of power to a second light source unit different from the first light source unit among the plurality of light source units when it is determined that the first light source unit is abnormal;
A lighting monitoring device comprising:

Among the plurality of light source units each having a solid state light emitting element, which is integrally supported and accommodated in the lamp housing, the voltage of the first light source unit is detected,
The performed and detected voltage, a first determination to determine the state of the first light source based on the threshold value of the pre-stored in the storage unit first light source voltage,
Storing the detected voltage when the first light source unit is determined to be normal in the first determination as a first voltage value in the storage unit;
After the storage, a second voltage value that is a voltage of the first light source unit is detected,
Based on the first voltage value and the second voltage value, a second determination is made to determine the state of the first light source unit,
When it is determined in the second determination that the first light source unit is abnormal, power supply is switched to a second light source unit different from the first light source unit among the plurality of light source units. Lighting monitoring method.

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