LED lighting devices

Abstract

To provide an LED illumination device with a camera capable of efficiently determining a photographing range.SOLUTION: The LED illumination device includes an illumination part and an imaging part 3. The illumination part includes a straight tube lamp 21 and a base part 23 provided at the end of the straight tube lamp. The imaging part 3 includes a camera storage part 31 provided between the straight tube lamp 21 and the base part 23 and a camera 32 stored in the camera storage part 31. The camera storage part 31 is freely rotatable in a circumferential direction with respect to the axial center C of the straight tube lamp 21. The camera 32 includes a lens 321 having an optical axis passing through a virtual line L2 extending in an orthogonal direction with respect to the axial center C of the straight tube lamp 21. The lens 321 is movable so as to change the angle of the optical axis with respect to the virtual line L2 in the circumferential direction of the axial center C of the straight tube lamp 21.SELECTED DRAWING: Figure 2

Description

Technical Field

[0005]

[0001] The present disclosure relates to an LED lighting device with a camera.

Background Art

[0002] In recent years, in railway vehicles, for the purpose of suppressing the occurrence of crimes and troubles, and early detecting and accurately grasping the situation of crimes and troubles, surveillance cameras tend to be installed in railway vehicles.

[0003] Japanese Patent No. 6810106 (Patent Document 1) discloses a passenger compartment LED tubular camera system. The passenger compartment LED tubular camera system includes a glass straight tube, a unit cover provided so as to be continuous on the virtual horizontal axis at the inner end of the glass straight tube, and a base provided at the outer end on the opposite side of the inner end where the unit cover of the glass straight tube is provided. The unit cover houses a control unit including a power supply unit, a control circuit, an imaging unit, and a wireless communication unit. The imaging unit has a camera. The camera has a wide-angle lens with a horizontal viewing angle in a direction parallel to the virtual horizontal axis of 140° to 180° and a vertical viewing angle in a direction perpendicular to the virtual horizontal axis of 90° to 180°. The optical axis of the camera imaging has an inclination angle of 40° to 45° with respect to the perpendicular passing through the virtual horizontal axis. Thereby, the passenger compartment LED tubular camera system can photograph a relatively wide range in the passenger compartment.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the cabin LED tube camera system, the optical axis of the camera's image capture is tilted at an angle of 40° to 45° with respect to the perpendicular line passing through the virtual horizontal axis. Therefore, for example, when a straight glass tube and unit cover are installed near the ceiling in a cabin, if the vertical field of view of the wide-angle lens is relatively wide, such as 180°, the ceiling may be partially captured, or obstacles such as poles or handrails for suspending hand straps installed in the cabin may be captured in large quantities, resulting in wasted space in the shooting range. In other words, the cabin LED tube camera system may not be able to efficiently capture a relatively wide shooting range.

[0006] Therefore, the object of this disclosure is to provide an LED lighting device with a camera that can efficiently determine the imaging range of the camera. [Means for solving the problem]

[0007] To solve the above problems, this disclosure is configured as follows: The LED lighting device according to this disclosure may include a lighting unit and an imaging unit. The lighting unit may include a straight tube lamp and a base portion provided at the end of the straight tube lamp. The imaging unit may include a camera housing portion provided between the straight tube lamp and the base portion, and a camera housed in the camera housing portion. The camera housing portion may be rotatable in the circumferential direction with respect to the axis of the straight tube lamp. The camera may include a lens having an optical axis passing through a virtual line extending perpendicular to the axis of the straight tube lamp. The lens may be movable to change the angle of the optical axis with respect to the virtual line in the circumferential direction of the axis of the straight tube lamp.

[0008] This allows for efficient determination of the camera's shooting range.

[0009] The lens may be movable to change the angle of the optical axis relative to the imaginary line in the horizontal direction of the axis of the straight tube lamp. This allows for more efficient determination of the camera's shooting range.

[0010] The camera housing may rotate at an angle of -60° to 60° in the circumferential direction of the axis of the straight tube lamp with respect to a perpendicular line passing through the axis of the straight tube lamp. The lens may be movable to change the angle of the optical axis with respect to a virtual line in the circumferential direction of the axis of the straight tube lamp within a range of -60° to 60°. The lens may also be movable to change the angle of the optical axis with respect to a virtual line in the horizontal direction of the axis of the straight tube lamp within a range of -60° to 60°. LED lighting devices are usually installed in multiples inside buildings or vehicles. By changing the angle of the camera housing and the angle of the optical axis of the lens within a range of -60° to 60°, it is possible to suppress the overlap of the shooting ranges of the cameras provided on each LED lighting device and efficiently determine the shooting range of each camera.

[0011] The lens can be a fisheye lens. Even with a relatively wide angle of view like a fisheye lens, it is possible to efficiently determine the camera's shooting range. [Effects of the Invention]

[0012] According to the LED lighting device of this disclosure, the imaging range can be determined efficiently. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a plan view of an LED lighting device according to the first embodiment. [Figure 2] Figure 2 is a perspective view of the imaging unit shown in Figure 1. [Figure 3] Figure 3 is a left side view of the imaging unit shown in Figure 1. [Figure 4] Figure 4 is a plan view of the imaging unit shown in Figure 1. [Modes for carrying out the invention]

[0014] The LED lighting device 1 of the embodiment described herein will be specifically described below with reference to Figures 1 to 4. As shown in Figure 1, the LED lighting device 1 comprises a lighting unit 2 and an imaging unit 3. The LED lighting device 1 is mounted on the ceiling or wall of a building or vehicle, etc.

[0015] The lighting unit 2 includes a straight tube lamp 21, a base portion 22, and a base portion 23.

[0016] The straight tube lamp 21 is a straight-tube type LED lamp. The straight tube lamp 21 includes a light-transmitting cover and an LED housed within the light-transmitting cover, although this will not be described in particular detail.

[0017] The base portion 22 is provided at one end of the straight tube lamp 21. In other words, the base portion 22 can be said to be one end of the lighting portion 2. The base portion 22 has a pin terminal 221. The pin terminal 221 is inserted into and fixed into a socket of the lighting device body (not shown) installed on a mounting surface such as a ceiling to which the LED lighting device 1 is attached. In this way, the LED is connected to a power supply (not shown).

[0018] The base portion 23 is provided at the other end of the straight tube lamp 21. In other words, the base portion 23 can be said to be the other end of the lighting portion 2. The base portion 23 has a dummy terminal 231. The dummy terminal 231 is not connected to the power supply. The dummy terminal 231 is used to fix the LED lighting device 1 to the lighting device body (not shown). The dummy terminal 231 may also function as a ground.

[0019] As shown in Figure 2, the imaging unit 3 includes a camera housing 31 and a camera 32 housed in the camera housing 31.

[0020] The camera housing 31 is pivotally supported by the lighting unit 2 so as to rotate circumferentially with respect to the axis C of the straight tube lamp 21. The camera housing 31 only needs to be able to rotate circumferentially with respect to the axis C of the straight tube lamp 21, and there is no particular limitation on how it is pivotally supported by the lighting unit 2. The camera housing 31 has a rotation angle of -60° to 60° circumferentially with respect to the perpendicular line L1 passing through the axis C. Thereby, it is possible to photograph a relatively wide range in the interior of a building, a vehicle, or the like. Here, the counterclockwise direction in the drawing is defined as the positive angle, and the clockwise direction is defined as the negative angle. The rotation angle of the camera housing 31 is not limited to this, and may be variously changed according to the situation such as the area or interior decoration of the interior of a building, a vehicle, or the like. A plurality of LED lighting devices 1 are installed in the interior of a building, a vehicle, or the like. For example, in a railway vehicle, the LED lighting devices 1 are installed on each of the left and right sides of the ceiling of the vehicle interior with respect to the traveling direction of the vehicle. The angle of the camera housing 31 with respect to the perpendicular line L1 can be appropriately determined so that the cameras 32 of the LED lighting devices 1 installed on the left and right sides can photograph the passenger compartment evenly. For example, the angle of the camera housing 31 with respect to the perpendicular line L1 may be fixed at intervals of 15°. The camera housing 31 also houses a control circuit and the like for controlling the camera 32.

[0021] The camera 32 has a lens 321. The main body of the camera 32 is housed in the camera housing 31. The lens 321 is exposed from a through hole provided in the camera housing 31. The lens 321 is a fisheye lens. Note that the lens 321 may be appropriately selected from various camera lenses such as a standard lens. However, from the viewpoint of photographing a relatively wide range in the interior of a building or a vehicle, the lens 321 is preferably a wide-angle lens, and more preferably a fisheye lens. Generally, a fisheye lens has an angle of view of 180°. The lens 321 has an optical axis passing through a virtual line L2 extending in a direction orthogonal to the axis C of the straight tube lamp 21. The camera 32 is electrically connected to the straight tube lamp 21. Thereby, the camera 32 secures power.

[0022] As shown in FIG. 3, the lens 321 is movable so that the angle of the optical axis with respect to the virtual line L2 can be changed in the circumferential direction of the axis C of the straight tube lamp 21. The angle of the optical axis can be changed within the range of -60° to 60° with respect to the virtual line L2. That is, the lens 321 is movable so that the angle of the optical axis with respect to the virtual line L2 is changed within the range of -60° to 60° in the circumferential direction of the axis C of the straight tube lamp 21. The variable angle in the circumferential direction of the lens 321 is not limited to this, and may be variously changed according to the situation such as the indoor area or interior of a building or a vehicle.

[0023] For example, when the camera housing 31 is fixed at an angle of 45° with respect to the vertical line L1 as shown in FIG. 3, the angle of the optical axis of the lens 321 is set to -45° with respect to the virtual line L2. Then, when the LED lighting device 1 is installed so that the axis C of the straight tube lamp 21 is parallel to the ceiling of the room, the optical axis of the lens 321 faces downward in the vertical direction with respect to the ceiling. Thereby, even when a fisheye lens having a relatively wide angle of view is used as the lens 321, the interior of the room can be efficiently photographed without including the ceiling in the photographing range. Also, for example, when there is an obstacle such as a pole or a handrail for hanging a hanging strap inside a railway vehicle directly below the axis C of the straight tube lamp 21, the camera housing 31 is fixed at an angle of 45° with respect to the vertical line L1, and By setting the angle of the optical axis of the lens 321 to -45° with respect to the virtual line L2, it is possible to avoid the obstacle being photographed at the center of the photographing range. Thus, by changing the angles of the optical axes of the camera housing 31 and the lens 321 respectively, even a fisheye lens having a relatively wide angle of view can avoid waste in the photographing range and obstacles, and efficiently determine the photographing range.

[0024] As shown in Figure 4, the lens 321 is movable so that the angle of the optical axis with respect to the imaginary line L2 can be changed in the horizontal direction of the axis C of the straight tube lamp 21. Here, the horizontal direction is the direction along the plane containing the axis C. The angle of the optical axis can be changed in the range of -60° to 60° with respect to the imaginary line L2. That is, the lens 321 is movable so that the angle of the optical axis with respect to the imaginary line L2 in the horizontal direction of the axis C of the straight tube lamp 21 can be changed in the range of -60° to 60°. Here, counterclockwise rotation is considered a positive angle and clockwise rotation is considered a negative angle. The variable angle in the circumferential direction of the lens 321 is not limited to this and may be changed in various ways depending on the area of ​​the room or interior of a building or vehicle, etc. This makes it possible to widen the shooting range of the camera 32 in the horizontal direction and efficiently determine the shooting range while avoiding obstacles, etc.

[0025] As described above, multiple LED lighting devices 1 are installed inside a building or vehicle. By varying the circumferential angle of the camera housing 31 and the circumferential and horizontal angles of the optical axis in the lens 321 within a range of -60° to 60°, the overlapping shooting ranges of the cameras 32 installed in each LED lighting device 1 are suppressed, allowing for efficient shooting of the desired range and enabling efficient determination of the shooting range of each camera 32.

[0026] The rotation of the camera housing 31 and the movement of the lens 321 may be performed manually or remotely. Furthermore, the lens 321 may be controlled to automatically point downward vertically in response to the rotation of the camera housing 31.

[0027] Although embodiments have been described above, this disclosure is not limited to the embodiments described above, and various modifications are possible without departing from the spirit of the disclosure. [Explanation of Symbols]

[0028] 1 LED lighting device 2. Lighting section 21 Tube Lamps 22 Mouthpiece 23. Mouthpiece 3. Imaging Unit 31 Camera housing 32 cameras 321 Lens C axis center L1 Perpendicular line L2 virtual line

Claims

1. An LED lighting device comprising a lighting unit and an imaging unit, The lighting unit includes a straight tube lamp and a base portion provided at the end of the straight tube lamp. The imaging unit includes a camera housing provided between the straight tube lamp and the base portion, and a camera housed in the camera housing portion. The camera housing is rotatable in the circumferential direction with respect to the axis of the straight tube lamp, and is formed to protrude from the outer surface of the straight tube lamp in a direction perpendicular to the axis of the straight tube lamp. The camera includes a lens having an optical axis passing through a virtual line extending perpendicular to the axis of the straight tube lamp, The lens is attached to the protruding tip of the camera housing and is movable in a way that changes the angle of the optical axis with respect to the virtual line in the circumferential direction of the axis of the straight tube lamp, in an LED lighting device.

2. An LED lighting device according to claim 1, The lens is movable in such a way as to change the angle of the optical axis with respect to the virtual line in the horizontal direction of the axis of the straight tube lamp, in an LED lighting device.

3. The LED lighting device according to claim 2, The camera housing rotates at an angle of -60° to 60° in the circumferential direction of the axis with respect to a perpendicular line passing through the axis of the straight tube lamp. An LED lighting device wherein the lens is movable so as to change the angle of the optical axis with respect to the imaginary line in the circumferential direction of the axis of the straight tube lamp within a range of -60° to 60°, and also movable so as to change the angle of the optical axis with respect to the imaginary line in the horizontal direction of the axis of the straight tube lamp within a range of -60° to 60°.

4. An LED lighting device according to any one of claims 1 to 3, The aforementioned lens is a fisheye lens, in an LED lighting device.

Images