Warning lights

Abstract

Provided is a warning light that can improve visibility from below. It comprises a circuit board 20 having a plurality of light-emitting elements 21 arranged at intervals in a ring shape, a cylindrical reflecting member 24 attached to the circuit board 20 so as to be positioned in the center of the plurality of light-emitting elements 21, a case 12 with an open top that houses the circuit board 20, and a lens cover 17 attached to the case 12 so as to cover the circuit board 20 and the reflecting member 24. The reflecting member 24 has a curved portion 24c that gradually widens as it extends upward.

Description

[Technical Field]

[0001] The present invention relates to a warning light. [Background technology]

[0002] Patent Document 1 discloses a work vehicle, which is an example of construction machinery. A warning light is located on the ceiling of the cabin of this work vehicle to notify nearby workers of the work status. The warning light is configured to reflect light emitted by a light-emitting unit using a reflector that rotates around a rotation axis that extends vertically by a rotary drive mechanism. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-242102 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, the warning light is attached to the ceiling of the work vehicle, which is at a height of more than 2 meters, making it difficult for workers on the ground to see the light from the light-emitting unit from below. Therefore, there is room for improvement in the visibility of the warning light in Patent Document 1. Note that this visibility problem is not limited to work vehicles, and can similarly occur when a warning light is attached at a high position.

[0005] An object of the present invention is to provide a warning light that can improve visibility from below. [Means for solving the problem]

[0006] One aspect of the present invention provides a warning light comprising: a circuit board having a plurality of light-emitting elements spaced apart in a ring shape, each emitting light upward; a cylindrical reflective member attached to the circuit board so as to be positioned in the center of the plurality of light-emitting elements; a case with an open top that houses the circuit board; and a lens cover attached to the case and covering the circuit board and the reflective member, wherein the reflective member has a curved portion that gradually widens as it extends upward.

[0007] A cylindrical reflector attached to a circuit board so as to be positioned at the center of a ring of light-emitting elements has a curved portion that gradually widens as it approaches the top. This allows the light emitted by the light-emitting elements to be reflected downward and outward by the curved portion of the reflector, making this reflected light visible to workers positioned below the warning light. Furthermore, because the light emitted by the light-emitting elements is reflected all around by the curved portion of the reflector, there is no need to rotate the reflector using a rotary drive mechanism. This simplifies the configuration of the warning light and reduces manufacturing costs. [Effects of the Invention]

[0008] The warning light of the present invention can improve visibility from below. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a schematic diagram of a crane equipped with a warning light according to an embodiment of the present invention. [Figure 2] FIG. [Figure 3] FIG. [Figure 4] Cross-sectional view of line IV-IV in Figure 2. [Figure 5] FIG. [Figure 6] Cross-sectional view taken along line VI-VI in Figure 5. [Figure 7] FIG. 7 is an enlarged cross-sectional view of part VII of FIG. 4. [Figure 8] FIG. 2 is a block diagram showing the configuration of a warning light. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0011] 1, a warning light 10 according to an embodiment of the present invention is attached to the ceiling of a cabin 2 of a backhoe 1, which is an example of a work vehicle, and notifies surrounding workers W of the work status. However, the warning light 10 may also be attached to an object such as an emergency vehicle or storefront outside a construction site, at a height of 2 m or more.

[0012] 2 to 4, the warning light 10 has a circuit board 20 and a reflective member 24 arranged inside an exterior body made up of a case 12 and a lens cover 17. A plurality of LEDs (light-emitting elements) 21 are arranged on the circuit board 20, and the light emitted by these LEDs is reflected downward and outward by the reflective member 24. This allows a worker W positioned below the warning light 10 to easily see the light reflected by the reflective member 24.

[0013] The specific configurations of the case 12, lens cover 17, circuit board 20, and reflecting member 24 will be described below.

[0014] 3 and 4, when viewed from above, the case 12, lens cover 17, circuit board 20, and reflecting member 24 all have a circular outer shape, and their respective axes A are coaxial.

[0015] The case 12 has a cylindrical outer peripheral wall 12a that is open at the top and bottom. An annular mounting portion 12b that protrudes inward is provided at the upper portion of the inner wall 12a, an inner cylindrical portion 12c that protrudes downward from the inner peripheral edge of the mounting portion 12b, and a bottom wall 12d that is continuous with the lower end of the inner cylindrical portion 12c. In addition, a bulge 12e that bulges upward is provided at the center of the bottom wall 12d.

[0016] The mounting portion 12b and the bulging portion 12e are provided for mounting the circuit board 20, and their upper ends are located at the same height. The mounting portion 12b is provided with a positioning protrusion 12f for positioning the circuit board 20 and a screw fastening portion 12g for fastening the circuit board 20 with screws. The bulging portion 12e is provided with a plurality of bosses 12h (three in this embodiment) for fastening the reflecting member 24 with screws. One of the plurality of bosses 12h is provided with a plate-shaped positioning protrusion 12i for positioning the circuit board 20 and a rod-shaped positioning protrusion 12j for positioning the reflecting member 24.

[0017] A screw portion 12k for attaching a lens cover 17 is provided on the upper outer side of the outer peripheral wall 12a. Furthermore, a plurality of (three in this embodiment) bosses 12m protruding downward and one mounting portion 12n are provided on the inside of the outer peripheral wall 12a. A bolt 13 for attaching the warning light 10 to the target object, i.e., the excavator 1 (see FIG. 1), is attached to the lower end of the boss 12m. A connection member 14 for supplying power to the circuit board 20 and communicating control signals is attached to the mounting portion 12n.

[0018] 3 and 4, lens cover 17 is dome-shaped and made of translucent resin, more specifically, colorless and transparent resin. Lens cover 17 is attached to the top of case 12 by threaded engagement of screw groove portion 17a with screw portion 12k, and covers circuit board 20 and reflecting member 24. On the inner periphery of lens cover 17, lower lens cut portion 17b is provided in the lower region, and upper lens cut portion 17e is provided in the upper region.

[0019] The lower lens cut portion 17b is provided to improve the visibility of the light emitted by the LED 21. The lower lens cut portion 17b has a plurality of concave stripes (recessed portions) 17c and convex stripes (convex portions) 17d arranged side by side in the circumferential direction and extending in the vertical direction. The concave stripes 17c and convex stripes 17d are alternately connected in the circumferential direction, and the lower lens cut portion 17b as a whole has a wavy shape with repeated concave and convex portions. The concave stripes 17c and convex stripes 17d extend from the lower end of the lens cover 17 to the upper side of the reflective member 24.

[0020] The upper lens cut portion 17e is provided adjacent to the upper side of the lower lens cut portion 17b. This upper lens cut portion 17e has a plurality of annular recesses 17f and annular protrusions 17g arranged side by side in the vertical direction and extending in the circumferential direction. The annular recesses 17f and annular protrusions 17g are alternately connected in the vertical direction, and the upper lens cut portion 17e as a whole has a wavy shape with repeated concave and convex portions.

[0021] 2 to 4, the outer periphery of the lens cover 17 is provided with a plurality of annular protrusions 17h that protrude radially outward and extend circumferentially to improve the visibility of the light emitted by the LEDs 21. In this embodiment, six annular protrusions 17h are provided at intervals in the vertical direction. Of these, the uppermost annular protrusion 17h is positioned at approximately the same height as the upper end of the reflecting member 24.

[0022] 3 and 4, the circuit board 20 is placed on the mounting portion 12b and the bulging portion 12e and is housed in the upper part of the case 12. The circuit board 20 is disk-shaped and thinner than the depth from the top end of the case 12 to the mounting portion 12b, and is connected to the connecting member 14 by electric wires (not shown). On the circuit board 20, a plurality of LEDs 21, a control unit 30 and an LED drive circuit 31 (see FIG. 8), which will be described in detail later, and other electronic components are arranged.

[0023] The circuit board 20 is provided with a positioning groove 20a corresponding to the positioning protrusion 12f of the case 12, a through hole 20b corresponding to the screw fastening portion 12g, a through hole 20c corresponding to the boss 12h, and a positioning groove 20d corresponding to the positioning protrusion 12i.

[0024] The LEDs 21 are arranged at intervals in the circumferential direction around the axis A on the upper surface of the circuit board 20 to form a ring shape, and emit light upward, which is a direction perpendicular to the circuit board 20. However, the LEDs 21 do not need to be arranged in a strict geometric ring shape as long as the intensity of the light seen from the outside does not change drastically. Each LED 21 is a full-color LED including a red LED, a green LED, and a blue LED. This LED 21 can emit light of multiple different colors by changing the light intensity of the red LED, the green LED, and the blue LED. In this embodiment, 16 LEDs 21 are arranged at equal intervals. In the following description, the LEDs 21 may be distinguished from each other by being referred to as LEDs 21A to 21P (see FIG. 8).

[0025] 1, 3, and 4, the reflective member 24 is provided to reflect light emitted by the multiple LEDs 21 toward an operator W positioned below the warning light 10. The reflective member 24 is attached to the circuit board 20 so as to be positioned in the center of the multiple LEDs 21. The reflective member 24 includes a cylindrical main body 24a and a flange 24e connected to the upper end of the main body 24a. A disk-shaped partition wall 24f is provided inside the main body 24a.

[0026] 4 and 5, the main body 24a has a C-shaped cross section with the vertically intermediate portion curved inward. That is, the main body 24a is composed of a lower curved portion 24b that gradually contracts upward, and an upper curved portion 24c that connects to the upper end of the lower curved portion 24b and gradually expands upward. The upper curved portion 24c reflects light emitted by the LED 21 downward and outward. To ensure the light reflected by the upper curved portion 24c, a boundary portion 24d between the lower curved portion 24b and the upper curved portion 24c is located below half of the overall height of the main body 24a.

[0027] The flange 24e is provided to reflect downward light that is not reflected by the main body 24a. The flange 24e is annular, connected to the upper end of the upper curved portion 24c, and protrudes radially outward. The outer diameter of the flange 24e is sized to ensure the smallest possible gap between the flange 24e and the inner circumferential surface of the lens cover 17 without interfering with attachment.

[0028] 6 and 7, the partition wall 24f is provided to fix the reflecting member 24 to the case 12. The partition wall 24f is provided with through holes 24g corresponding to the bosses 12h and positioning holes 24h corresponding to the positioning protrusions 12j. Referring to FIGS. 4 and 6, the partition wall 24f has a positioning rib 24i that protrudes in a flat plate shape on the lower surface side facing the circuit board 20. The positioning rib 24i cooperates with the three bosses 12h to guide the reflecting member 24 to the correct attachment position relative to the case 12.

[0029] 3 and 4, the lower curved portion 24b covers some of the electronic components for controlling LED light emission that are arranged on the upper surface of the circuit board 20. The remaining electronic components for controlling LED light emission, the control unit 30, and the like are arranged on the lower surface of the circuit board 20 and are covered by the inner cylindrical portion 12c and the bulging portion 12e of the case 12. In other words, the electronic components for controlling LED light emission and the control unit 30 are arranged in a portion that is more dustproof and waterproof than the LEDs 21.

[0030] 5 and 7, the main body 24a is provided with a plurality of reflective surfaces 26 for determining the direction in which light from the LEDs 21 is reflected. When viewed from the front side, these reflective surfaces 26 are arranged in a matrix in the vertical and circumferential directions. In this embodiment, the reflective surfaces 26 are arranged in 18 rows in the vertical direction and 16 columns in the circumferential direction.

[0031] Specifically, the multiple reflecting surfaces 26 are formed on the outer peripheral surface 25a of a ring-shaped protrusion 25 having a triangular cross section that protrudes radially outward from the main body 24a. The protrusion 25 is formed in multiple steps (18 steps in this embodiment) in the vertical direction. Each protrusion 25 has an outer peripheral surface 25a that slopes outward as it extends upward, and an upper side surface 25b that slopes inward as it extends upward. With reference to FIGS. 5 and 6, the outer peripheral surface 25a is formed in a generally regular polygonal shape (a hexagonal shape in this embodiment) when viewed from the direction in which the axis A extends, and the portions corresponding to each side constitute the reflecting surfaces 26.

[0032] 5 and 6, the plurality of reflecting surfaces 26 located in the same row and adjacent to each other in the vertical direction all have the same width. This width roughly corresponds to the length of one side of the regular polygonal outer peripheral surface 25a of the protruding portion 25 adjacent to the boundary portion 24d. Of the plurality of reflecting surfaces 26 located in the same row (height), connecting surfaces 27 are provided between the circumferentially adjacent reflecting surfaces 26. In other words, the plurality of reflecting surfaces 26 and the plurality of connecting surfaces 27 form the outer peripheral surface 25a of the protruding portion 25. The angular range of the connecting surfaces 27 as viewed from the direction in which the axis A extends becomes smaller as one approaches the boundary portion 24d and becomes larger as one moves away from the boundary portion 24d.

[0033] 6, each reflecting surface 26 is made up of a pair of curved surface portions 26a adjacent to each other in the circumferential direction, and each connecting surface 27 is made up of a pair of curved surface portions 27a adjacent to each other in the circumferential direction. These curved surface portions 26a, 27a are both curved inward toward the axis A. Of these, the pair of curved surface portions 26a are formed with a curvature such that the reflected light from each other converges on the radially outer side of the lens cover 17.

[0034] 4 and 7 , each of the multiple reflective surfaces 26 slopes outward toward the top. The inclination angle α of each of the multiple reflective surfaces 26 relative to the circuit board 20 decreases toward the top. That is, the inclination angle α of each of the multiple reflective surfaces 26 located at the top is smaller than that of each of the multiple reflective surfaces 26 located at the bottom. As a result, as shown by the dashed-dotted lines in FIG. 7 , light from the LEDs 21 is reflected generally laterally along the circuit board 20 by the reflective surfaces 26 located at the bottom, and is reflected obliquely downward and outward by the reflective surfaces 26 located at the top. In this embodiment, the inclination angles α of the multiple reflective surfaces 26, more specifically, the multiple reflective surfaces 26 constituting the same row, are each set so that the reflected light from the multiple reflective surfaces 26 converges downward and outward from the circuit board 20. Of course, the connecting surfaces 27 located between adjacent reflective surfaces 26 also reflect the light from the LEDs 21 downward and outward from the circuit board 20.

[0035] 8, the control unit 30 is connected to an LED drive circuit 31 which is connected to each of the plurality of LEDs 21A to 21P. The control unit 30 and the LED drive circuit 31 are both disposed on the lower surface of the circuit board 20, on the side opposite to the LEDs 21A to 21P.

[0036] The control unit 30 is configured with one or more microcomputers and other electronic devices. The control unit 30 controls the LEDs 21A to 21P individually via an LED drive circuit 31.

[0037] The LED drive circuit 31 switches the LEDs 21A to 21P individually between a light-emitting state (on state) and a non-light-emitting state (off state) based on a signal from the control unit 30. The LED drive circuit 31 includes a red LED drive circuit unit, a green LED drive circuit unit, and a blue LED drive circuit unit, and causes the red LED, green LED, and blue LED included in each of the LEDs 21A to 21P to emit light at a specified intensity, causing the LEDs 21A to 21P to emit light in a specified color.

[0038] Next, an example of control by the control unit 30 will be described.

[0039] Referring to Fig. 1, excavator 1 is equipped with bucket 4 and hook 5 at the tip of arm 3. The weight of the member towed by hook 5 may be heavier than the weight of the earth and sand to be scooped up by bucket 4, and may exceed the allowable load set for excavator 1. Therefore, excavator 1 is provided with a sensor (weight detection unit) 6 that detects the weight of the member towed by hook 5. Referring to Fig. 8, sensor 6 is connected to control unit 30.

[0040] The control unit 30 switches the light emission color of the LEDs 21A to 21P via the LED drive circuit 31 based on the weight of the towing member obtained from the input signal from the sensor 6. For example, when the detection result from the sensor 6 is less than a threshold value that is lower than the allowable load of the excavator 1, the control unit 30 causes all of the LEDs 21A to 21P to emit blue light via the LED drive circuit 31. When the detection result is equal to or greater than the threshold value but less than the allowable load, the control unit 30 causes all of the LEDs 21A to 21P to emit yellow light via the LED drive circuit 31. On the other hand, when the detection result is equal to or greater than the allowable load, the control unit 30 causes all of the LEDs 21A to 21P to emit red light via the LED drive circuit 31. However, the light emission color of the LEDs 21A to 21P set by the control unit 30 can be changed as necessary.

[0041] Furthermore, the control unit 30 performs a lighting display in which all of the LEDs 21A to 21P continue to emit light via the LED drive circuit 31. Alternatively, the control unit 30 performs a blinking display in which all of the LEDs 21A to 21P alternate between a light-emitting state in which they are lit for a predetermined lighting time and a non-light-emitting state in which they are turned off for a predetermined lighting time via the LED drive circuit 31.

[0042] Referring to FIG. 7, the light emitted by the LED 21 gradually spreads upward in an inverted cone shape. Light traveling to the right in FIG. 7 is reflected by the multiple reflective surfaces 26 of the reflective member 24, and the reflected light travels downward and outward from the circuit board 20. Light traveling to the left in FIG. 7 is reflected by the flange 24e of the reflective member 24, and the reflected light travels downward and outward from the circuit board 20. Meanwhile, because there is only a small gap between the flange 24e and the lens cover 17 that does not impede installation, most of the light from the LED 21 is reflected by the flange 24e. In other words, the reflective member 24 can reflect most of the light emitted by the LED 21 downward and outward from the lens cover 17. Therefore, even if the warning light 10 is attached to the ceiling of the excavator 1, which is at a height of 2 meters or more, the reflected light can be easily seen by the worker W, thereby reliably alerting the worker W.

[0043] The warning light 10 configured as above has the following features.

[0044] A cylindrical reflecting member 24 is mounted on the circuit board 20 so as to be positioned at the center of the circularly arranged LEDs 21, and has an upper curved portion 24c that is curved so as to gradually widen as it extends upward. As a result, light emitted by the LEDs 21 is reflected downward and outward by the upper curved portion 24c of the reflecting member 24, and this reflected light can be seen by the worker W positioned below the warning light 10. Moreover, because the light emitted by the LEDs 21 is reflected all around by the curved portion 24c of the reflecting member 24, there is no need to rotate the reflecting member 24 by a rotary drive mechanism. This simplifies the configuration of the warning light 10 and reduces manufacturing costs.

[0045] The reflective member 24 has a plurality of reflective surfaces 26 formed on its outer periphery, which are inclined outward as they extend upward. This ensures that the light emitted by the LED 21 is reflected downward and outward. This allows the worker W, who is positioned below the warning light 10, to easily see the reflected light.

[0046] The plurality of reflective surfaces 26 are arranged in a matrix, so that the reflected light can be easily seen by an operator no matter where he or she is located around the warning light 10.

[0047] The inclination angle of the multiple reflective surfaces 26 relative to the circuit board 20 is smaller for the reflective surfaces 26 located on the upper side than for the reflective surfaces 26 located on the lower side. As a result, the light reflected by the reflective surfaces 26 travels sideways along the circuit board 20 as the reflective surfaces 26 are located lower, and travels diagonally downward and outward as the reflective surfaces 26 are located higher. Therefore, the reflected light can be easily seen by both a worker W located below the warning light 10 and a worker W located at the same height as the warning light 10.

[0048] The plurality of reflecting surfaces 26 are each inclined so that the reflected light converges downward and outside the circuit board 20. This improves the visibility of the light reflected by the reflecting member 24.

[0049] An outwardly protruding flange 24e is provided at the upper end of the reflective member 24. This ensures that most of the light emitted by the multiple LEDs 21 is reflected downward, making the reflected light easily visible to the worker W positioned below the warning light 10.

[0050] The flange 24e is annular, and a plurality of recesses 17c and protrusions 17d are formed in the inner periphery of the lens cover 17, arranged side by side in the circumferential direction and extending in the vertical direction. This improves the visibility of the light reflected by the reflecting member 24.

[0051] The LED 21 is a full-color LED that can emit a plurality of different colors, which makes it possible to change the emitted color depending on the work status, thereby improving the ability to notify surrounding workers W and ensuring safety.

[0052] Other embodiments and various modifications of the present invention will be described below, but in these descriptions, points that are not particularly mentioned are the same as those of the above-described embodiment.

[0053] The display mode of the LED 21 by the control unit 30 can be changed as needed, and may be as follows.

[0054] Of the LEDs 21A to 21P shown in FIG. 8, the control unit 30 first causes the first LED 21A to emit light and the remaining LEDs 21B to 21P to be in a non-light-emitting state. Subsequently, after a predetermined lighting time has elapsed, the control unit 30 causes the second LED 21B to emit light and the remaining LEDs 21A, 21C to 21P to be in a non-light-emitting state. In other words, the LED to be illuminated is changed from the first LED 21A to the second LED 21B, which is adjacent to the first LED 21A in the counterclockwise direction (first direction). In this way, the process of sequentially switching the LED to be illuminated from the first LED 21A to the sixteenth LED 21P at predetermined time intervals may be repeated.

[0055] 8, the control unit 30 may individually control eight LED groups, each consisting of two adjacent LEDs (21A, 21B, 21C, 21D, 21E, 21F, 21G, 21H, 21I, 21J, 21K, 21L, 21M, 21N, and 21O, 21P). Specifically, the control unit 30 may control the first group of LEDs (21A, 21B) to emit light and the remaining LEDs (21C, 21P) to be in a non-light-emitting state. Subsequently, after a predetermined lighting time has elapsed, the control unit 30 controls the second group of LEDs (21C, 21D) to emit light and the remaining LEDs (21A, 21B, 21E, 21P) to be in a non-light-emitting state. In this way, the process of sequentially switching the LED groups to be lit from the first set of LEDs 21A, 21B to the eighth set of LEDs 21O, 21P at predetermined time intervals may be repeated. Furthermore, the control unit 30 may group adjacent four of the 16 LEDs 21A to 21P into one group, and control the four groups of LEDs individually. Furthermore, the number of LEDs 21 constituting one group of LEDs may be changed depending on the total number of LEDs 21.

[0056] As described above, by sequentially switching the LED 21 or LED group to emit light to the adjacent LED 21 or LED group in the first direction, the light reflected by the reflective member 24 appears to the worker W as if it were rotating. Therefore, the notification ability for the worker W can be improved.

[0057] The plurality of LEDs 21 may be configured by single-color LEDs of the same color. Alternatively, a red LED, a green LED, and a blue LED may be grouped into a set of LED groups, and multiple sets of LED groups may be arranged at intervals in the circumferential direction around the axis A.

[0058] The reflecting member 24 may reflect the light of the LED 21 by the curvature of the lower curved portion 24b and the upper curved portion 24c that constitute the main body 24a, without providing the reflecting surface 26 including the protrusion 25. Alternatively, the main body 24a may be formed only by the upper curved portion 24c. Alternatively, the reflecting member 24 may be formed only by the main body 24a, without providing the flange portion 24e. [Explanation of symbols]

[0059] 1. Excavator 2 cabins 3 Arm 4 buckets 5 Hooks 6 sensors 10 warning light 12 cases 12a Outer wall 12b Placement section 12c Inner cylinder part 12d bottom wall 12e bulge 12f Positioning protrusion 12g screw part 12h Boss 12i Positioning protrusion 12j Positioning protrusion 12k thread 12m Boss 12n Mounting part 13 volts 14 Connecting member 17 Lens cover 17a Thread groove 17b Lower lens cut 17c Concave 17d Convex strip (convex part) 17e Upper lens cut 17f Annular recess 17g Annular convex part 17h Circular convex part 20 Circuit Board 20a Positioning groove 20b Through hole 20c through hole 20d Positioning groove 21, 21A to 21P LED (light-emitting element) 24 Reflective material 24a main body 24b Lower curved part 24c upper curve 24d Boundary part 24e Tsubabe 24th floor partition wall 24g through hole 24h positioning hole 24i Positioning rib 25 Protrusion 25a Outer surface 25b Top side 26 Reflective surface 26a Curved section 27 Articulating surface 27a Curved section 30 Control Unit 31 LED drive circuit W Worker

Claims

1. a circuit board having a plurality of light emitting elements arranged at intervals in an annular shape, each of which emits light upward; a cylindrical reflecting member attached to the circuit board so as to be positioned at the center of the plurality of light-emitting elements; a case having an open top end that houses the circuit board; a light-transmitting lens cover attached to the case so as to cover the circuit board and the reflecting member; Equipped with The warning light, wherein the reflective member has a curved portion that is curved so as to gradually widen toward the upper side.

2. 2. The warning light according to claim 1, wherein a plurality of reflective surfaces are formed on an outer periphery of the reflecting member, the reflective surface being inclined outwardly as it extends upward.

3. The warning light according to claim 2 , wherein the plurality of reflective surfaces are arranged in a matrix.

4. The warning light according to claim 3 , wherein the inclination angle of the plurality of reflective surfaces relative to the circuit board is smaller for the reflective surfaces located on the upper side than for the reflective surfaces located on the lower side.

5. The warning light according to claim 3 , wherein the plurality of reflective surfaces are each inclined so that reflected light converges downward and outside the circuit board.

6. The warning light according to claim 1 , wherein an outwardly protruding flange is provided on an upper end of the reflecting member.

7. The flange is annular, The warning light according to claim 6, wherein the lens cover has an inner peripheral portion formed with a plurality of concave and convex portions arranged side by side in the circumferential direction and extending in the vertical direction.

8. 6. The warning light according to claim 1, wherein the light emitting element is a full-color LED capable of emitting light of a plurality of different colors.

9. a control unit that controls the plurality of light-emitting elements individually, 6. The warning light according to claim 1, wherein the control unit sequentially switches the light-emitting elements to be illuminated so that one of the plurality of light-emitting elements emits light and the rest are in a non-illuminating state, and then one of the plurality of light-emitting elements adjacent to the one that has been illuminated in a first direction emits light and the rest are in a non-illuminating state.

10. Two or more adjacent light-emitting elements among the plurality of light-emitting elements are defined as one light-emitting element group, and a control unit is provided to individually control the plurality of light-emitting element groups; 6. A warning light as claimed in any one of claims 1 to 5, wherein the control unit sequentially switches the groups of light-emitting elements to be illuminated so that one of the plurality of groups of light-emitting elements emits light and the rest are in a non-illuminating state, and then one of the plurality of groups of light-emitting elements adjacent to the one group that has been illuminated in a first direction emits light and the rest are in a non-illuminating state.

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