CN103968283B - Bulb type lighting device - Google Patents

Abstract

The invention provides a kind of bulb type lighting device that can change arbitrarily and easily the characteristic of the light irradiation such as irradiated area, exposure intensity. This bulb type lighting device is characterised in that, comprising: be disposed at bulb type lighting device main body (30) and possess the illuminator (70) of multiple light-emitting components (71); Lenticular unit (40), it comprises with multiple light-emitting components (71) distinguishes relative to the multiple lens (41) that configure and prevents the anti-rotation parts (42) that self rotate; With lenticular unit travel mechanism, it makes lenticular unit (40) move at the optical axis direction of the light of light-emitting component (71) ejaculation to maintain light-emitting component (71) and the state of the relativeness of lens (41).

Description

Bulb Type Lighting Device

technical field

The present invention relates to a light bulb type lighting device.

Background technique

A lightbulb-type lighting device including a luminous body having a light-emitting element such as an LED (Light Emitting Diode: Light Emitting Diode) has attracted attention in recent years because it can achieve a longer life and energy saving than an incandescent lamp. In such a bulb-type lighting device, light from a light-emitting element is usually irradiated to the outside through a lens or the like. At this time, by changing the distance between the light emitting element and the lens, etc., the characteristics (irradiation area, irradiation intensity, etc.) of the light irradiated to the outside (irradiation light) can be changed.

As a technique related to this technique, for example, the technique described in Patent Document 1 is known. Patent Document 1 describes a configuration in which a local lighting lamp has a light emitting diode and a lens arranged in front of the light emitting diode, and the lens is divided into a plurality of lens portions according to the light emission intensity distribution of the light emitting diode. In addition, among the light emitted by the light emitting diode, light with high light intensity passes through the lens portion and is irradiated to the irradiated surface at a large diffusion angle, forming a substantially rectangular irradiated light pattern on the irradiated surface.

Patent Document 1: Japanese Patent Laid-Open No. 2005-174685

Contents of the invention

In the technique described in Patent Document 1, four lenses are arranged so as to be located at the vertices of a square to form a lens member, and four light emitting elements are arranged so that the lenses face each other. Also, the center of the lens part (the center of the aforementioned square) is rotated around the optical axis, whereby the distance between the lens and the light emitting element is variable. Therefore, the distance between the lens and the light emitting element can only be set at predetermined intervals according to the angle of rotation (every 45° in Patent Document 1). Therefore, with the technology described in Patent Document 1, the distance between the lens and the light emitting element cannot be continuously changed, and the characteristics of the irradiated light cannot be changed arbitrarily.

In addition, in order to rotate the lens member, the angle of incidence of the light emitted from the illuminant entering the lens may be different before and after the rotation of the lens member. That is, the relative position of the optical axis of the light emitting element may be different with respect to the facing lens before and after the rotation. As a result, the characteristics of the light emitted outside through the lens (that is, the irradiated light) may vary. Also, for angles that are not predetermined angles (for example, 22.5°, 67.5°, etc. in Patent Document 1), the lens and the light emitting element may not face each other depending on the angle of rotation, and in this case, sufficient irradiation light may not be obtained. . Therefore, in the technique described in Patent Document 1, the alignment of the lens with respect to the light emitting element (that is, the rotation of the lens member) needs to be strictly performed to some extent. Therefore, it is cumbersome to change the characteristics of the irradiated light.

The present invention was developed in view of the above-mentioned problems, and the technical problem to be solved by the present invention is to provide a bulb-type lighting device that can arbitrarily and easily change the characteristics of irradiated light such as irradiated area and irradiated intensity.

The inventors of the present invention have conducted intensive studies in order to solve the above-mentioned problems. As a result, it has been found that the above-mentioned problem can be solved by arranging the lens position adjustment means to move the plurality of lenses facing each of the plurality of light emitting elements up and down in the direction of the optical axis of the light emitting element while maintaining the relative relationship.

According to the present invention, there is provided a bulb-type lighting device capable of arbitrarily and easily changing characteristics of irradiated light such as an irradiated area and irradiated intensity.

Description of drawings

FIG. 1 is a side view of a light bulb-type lighting device according to this embodiment.

Fig. 2 is an upper perspective view of the bulb-type lighting device according to the present embodiment.

Fig. 3 is an exploded perspective view of the bulb-type lighting device according to the present embodiment.

Fig. 4 is an exploded perspective view showing an enlarged part above a luminous body constituting the bulb-type lighting device according to the present embodiment.

5 is a cross-sectional view (cross-sectional view taken along line A-A of FIG. 4 ) of a lens position adjustment member constituting the bulb-type lighting device according to the present embodiment.

FIG. 6 is a view explaining the operation of each member when the distance between the luminous body and the lens member is changed by rotating the lens position adjustment member.

Symbol Description

20 Lens position adjustment part (lens part moving mechanism)

21 guide groove (lens unit moving mechanism, first guide groove)

22 convex part (lens part moving mechanism)

30 Main body (bulb-type lighting device main body)

40 lens parts

41 lenses

42 convex part (anti-rotation part, lens part moving mechanism)

60 reflective parts

64 convex parts (lens part moving mechanism, first convex part)

70 illuminants

71 light emitting elements

100 bulb type lighting device

detailed description

Hereinafter, although the form (this embodiment) for implementing this invention is demonstrated, this invention is not limited to the following content at all.

<structure>

FIG. 1 is a side view of a light bulb-type lighting device 100 according to the present embodiment. The bulb-type lighting device 100 includes an annular lens position adjustment member 20 and a main body 30 . The details will be described later. In the bulb-type lighting device 100, the lens position adjustment member 20 is configured to be rotatable. When the lens position adjustment member 20 is rotated, the lens member 40 (refer to FIG. 3, Not shown in Figure 1) the position changes.

The main body part 30 is comprised including the illuminant 70, the reflective member 60 (not shown in FIG. 1, and will be described later) etc. besides the heat sink 50 and the base 31. The heat generated with the light emission of the luminous body 70 is dissipated to the outside through the radiator 50 . In addition, the conductive connection portion 32 constituting the base 31 is connected to an unillustrated connection port, whereby electric power is supplied to the luminous body 70 and the like, so that the luminous body 70 emits light.

FIG. 2 is an upper perspective view of the bulb-type lighting device 100 according to the present embodiment. In the lens position adjustment member 20 , a lens member 40 including five lenses 41 located at the vertices and the center of a square is supported. The lens member 40 is made of, for example, transparent acrylic resin or the like.

The light emitted by the luminous body 70 provided inside the radiator 50 passes through the lens member 40 and is emitted to the outside (irradiates the outside). More specifically, as will be described in detail later with reference to FIG. 3 , light emitted by five light emitting elements 71 (such as LEDs) included in the light emitting body 70 is emitted to the outside through five lenses 41 arranged to face each light emitting element 71 . In addition, the inner surface of the end portion of the lens position adjustment member 20 has a tapered shape that narrows upward. Thereby, the light transmitted through the lens 41 is reflected and collected (condensed light), and the directivity is improved.

FIG. 3 is an exploded perspective view of the bulb-type lighting device 100 according to this embodiment. Inside the radiator 50 are disposed a power circuit board 35 for supplying predetermined power to the light emitting elements 71 of the light emitting body 70 via lead wires (not shown), and a resin storage case 36 for housing the power circuit board 35 . In addition, the power circuit board 35 and the connection portion 32 are connected by lead wires (not shown) for supplying commercial power to the power circuit board 35 . In addition, four screw holes 51 for inserting four screws 61 for fixing the luminous body 70 and the reflection member 60 described later are provided on the upper end surface of the radiator 50 .

The power circuit board 35 is formed by mounting a plurality of electronic components (not shown) on the board. The power circuit board 35 includes, for example, a circuit for rectifying AC power from a commercial power supply to DC power, a circuit for adjusting the voltage and current of the rectified DC power, and the like.

The storage box 36 is provided inside the radiator 50 . The storage case 36 is made of resin such as PBT (polybutylene terephthalate) or PC (polycarbonate), for example. The base 31 is fitted into the end portion of the storage case 36 on the side opposite to the luminous body 70 and fixed with an adhesive or the like. In addition, the base 31 and the connection part 32 are insulated by the insulating member 33 .

The luminous body 70 is provided on the main body 30 (the main body of the bulb-type lighting device), and on the luminous body 70 , light emitting elements 71 are arranged at five points in total at each apex of the square and at the central part thereof. That is, the luminous body 70 is arranged on the main body 30 (bulb-type lighting device main body), and includes a plurality of light emitting elements 71 (five light emitting elements 71 in this embodiment). In addition, four through holes 72 through which four screws 61 pass through are provided near the outer edge of the luminous body 70 in order to fix the luminous body 70 to the upper end surface of the radiator 50 together with the reflection member 60 . Here, the illuminant 70 and the reflective member 60 constituting the main body 30 and the lens member 40 and the lens position adjustment member 20 arranged above them will be described with reference to FIG. 4 .

FIG. 4 is an exploded perspective view showing an enlarged part above the illuminant 70 constituting the bulb-type lighting device 100 according to the present embodiment. In the reflection member 60 , five light guide holes 65 are provided at positions where the optical axis of the light emitting element 71 passes through when the light emitting body 70 is fixed to the radiator 50 . That is, for example, light emitted from the light emitting element 71a shown in FIG. 4 reaches the lens 41a through the light guide hole 65a. Thereafter, the light that has reached the lens 41a passes through the lens 41a and is irradiated to the outside. In addition, the inner surface of the end portion of the light guide hole 65 has a tapered shape that narrows upward. Thereby, the light passing through the light guide hole 65 can be reflected and transmitted through the lens 41, and light with high directivity can be obtained.

In this way, the reflective member 60 included in the main body 30 includes: a light guide hole 65 that allows light from the light emitting element 71 to reach the lens member 40; A tapered end (reflector) formed on the inner surface of the light guide hole 65 .

Further, on the upper surface near the outer edge of the reflective member 60 , a concave portion 63 is provided so as to be able to fit the convex portion 42 (described later) provided on the lower surface of the lens member 40 . Three recesses 63 are provided at substantially equal intervals corresponding to the protrusions 42 . In addition, a convex portion 64 is provided on the upper end of the outer surface of the reflection member 60 so as to be able to fit into a guide groove 21 (described later) formed on the inner surface of the lens position adjustment member 20 . That is, the protrusion 64 is formed on the side surface of the main body 30 (ie, the main body of the bulb-type lighting device; more specifically, the reflection member 60 constituting the main body of the light bulb-type lighting device (main body 30 )), and fits into the guide groove 21 . There are three convex parts 64 corresponding to the guide grooves 21 at substantially equal intervals.

In addition, the protrusion 64 can slide along the guide groove 21 within the guide groove 21 , thereby changing the position of the lens member 20 in the vertical direction. This will be described in detail later with reference to FIGS. 5 and 6 .

On the upper surface of the lens member 40, five lenses 41 are provided as described above. On the other hand, on the lower surface, a convex portion 42 is provided at a position capable of fitting into the concave portion 63 provided in the reflective member 60 . Of course, the convex portion 42 is fitted in the concave portion 63 so as to be slidable in the vertical direction. Three convex portions 42 are provided at approximately equal intervals on the lower surface near the outer edge of the lens member 40 corresponding to the concave portions 63 . That is, the plurality of lenses (five lenses 41 in the present embodiment) arranged to face the plurality of light emitting elements 71 (five light emitting elements 71 in the present embodiment) of the lens member 40 and the convex portion 42 that prevents its own rotation (Anti-rotation part).

The lens position adjustment member 20 is provided so as to surround the illuminant 70 and the reflection member 70 fixed to the upper end surface of the radiator 50 . On the inner surface of the lens position adjusting member 20 is formed a guide groove 21 slidably fitted to the convex portion 64 provided on the reflective member 60 , and the lens position adjusting member 20 is provided by fitting the guide groove 21 to the convex portion 64 . Although not shown, three guide grooves 21 are provided approximately at equal intervals on the inner surface. In addition, a convex portion 22 for rotatably supporting the lens member 40 is provided on the inner surface of the lens position adjustment member 20 . Although not shown in FIG. 4 , three convex portions 22 are also provided at approximately equal intervals on the inner surface.

Referring to FIG. 5 , the guide groove 21 and the protrusion 22 will be described in more detail.

FIG. 5 is a cross-sectional view (cross-sectional view taken along line A-A of FIG. 4 ) of the lens position adjustment member 20 constituting the bulb-type lighting device 100 according to the present embodiment. The outer edge of the lens member 40 is fitted between the convex portion 22 provided on the inner surface of the lens position adjustment member 20 and the lower end surface 24 of the tapered outer edge of the lens position adjustment member 20 . However, the lens member 40 can freely rotate relative to the lens position adjustment member 20 in a state of being fitted between the convex portion 22 and the lower end surface 24 . That is, the lens member 40 is slidably supported by the lens position adjustment member 20 between the convex portion 22 and the lower end surface 24 .

In addition, the guide groove 21 (first guide groove) formed on the inner surface of the lens position adjustment member 20 is formed in a gradual slope from the uppermost part 21a at the highest position to the lowermost part 21b at the lowest position. Therefore, the convex portion 64 (first convex portion) of the reflection member 60 can slide between the uppermost portion 21 a and the lowermost portion 21 b as the lens position adjustment member 20 rotates. When sliding, the convex portion 42 slides vertically in the concave portion 63 , thereby moving the lens member 40 vertically (direction of the optical axis of light from the light emitting element 71 ) without rotating the lens member 40 .

Thus, the bulb-type lighting device 100 of this embodiment includes a lens member moving mechanism that moves the lens member 40 in the direction of the optical axis of light emitted from the light emitting element 71 while maintaining the relative relationship between the light emitting element 71 and the lens 41 . More specifically, the lens member moving mechanism included in the bulb-type lighting device 100 is configured such that the lens position adjusting member 20 moves in the direction of the optical axis of light emitted from the light emitting element 71 as the lens position adjusting member 20 rotates, thereby causing the The lens member 40 supported by the lens position member 20 moves in the above-mentioned optical axis direction.

<role>

Next, the action of the bulb-type lighting device 100 will be described with appropriate reference to FIGS. 4 to 6 .

As shown by the dotted line in FIG. 4 , the reflection member 60 and the illuminant 70 are fixed to the radiator 50 by screws 61 . Also, in the lens member 40 , the convex portion 42 provided on the lower surface of the lens member 40 is fitted into the concave portion 63 provided on the upper surface of the reflective member 60 , whereby the lens member 40 does not rotate relative to the reflective member 60 . However, unlike the fixing by the screws 61 , the lens 40 can move in the vertical direction by sliding the convex portion 42 in the vertical direction in the concave portion 63 .

In this way, the lens member 40, the reflective member 60, and the illuminant 70 are arranged and fixed in a non-rotatable manner. On the other hand, in the lens position adjustment member 20, the lens member 40 is rotatably supported. This means that the lens member 40 does not rotate when the lens position adjustment member 20 is rotated.

Therefore, when the lens position adjustment member 20 is rotated, the position of the lens position adjustment member 20 changes according to the position of the protrusion 64 slidably fitted into the guide groove 21 . That is, when the lens position adjusting member 20 rotates, the position of the convex portion 64 does not change due to the rotation, so the position of the lens position adjusting member 20 changes along the guide groove 21 fitted with the convex portion 64 .

Specifically, when the lens position adjustment member 20 is rotated, the convex portion 64 slides in the inclined guide groove 21 , so that the lens position adjustment member 20 moves in the vertical direction. The lens member 40 does not rotate as described above, but can move up and down. Therefore, when the lens position adjusting member 20 is rotated, the lens member 40 does not rotate accordingly, but moves vertically as the lens position adjusting member 20 rotates, and the lens member 40 moves vertically. This is further explained with reference to FIG. 6 .

FIG. 6 is a view explaining the operation of each member when the distance between the illuminant 70 and the lens member 40 is changed by rotating the lens position adjustment member 20 . 6( a ) shows a situation where the convex portion 64 of the reflective member 60 is located at the uppermost portion 21 a of the lens position adjustment member 20 , and FIG. The situation of the location.

As shown in FIG. 6( a ), when the convex portion 64 is located at the uppermost portion 21 a, the position of the lens member 40 is closest to the reflection member 60 . That is, the distance between the illuminant 70 and the lens member 40 is the shortest. From this state, when the lens position adjustment member 20 is rotated by, for example, 90°, the protrusion 64 slides along the guide groove 21 and the position of the lens position adjustment member 20 moves upward (see FIG. 6( b )). At this time, most of the protrusions 42 provided on the lower surface of the lens member 40 are pulled out from the recesses 63 provided on the upper surface of the reflection member 60 . However, in this state, part of the concave portion 42 is fitted into the concave portion 63 , so that the lens member 40 does not rotate even when the reflection position adjusting member 20 is rotated again.

For example, as shown in FIG. 6( a ), when the distance between the illuminant 70 and the lens member 40 is short, the irradiation area is enlarged. On the other hand, for example, as shown in FIG. 6( a ), as the distance between the luminous body 70 and the lens member 40 becomes longer, the irradiation intensity increases. Therefore, the user can easily and continuously change the distance between the illuminant 70 and the lens member 40 by rotating the lens position adjustment member 20 so that characteristics such as irradiation area and irradiation intensity become desired values.

<effect>

According to the bulb-type lighting device 100 described above, it is possible to provide a bulb-type lighting device in which characteristics of irradiated light such as irradiation area and irradiation intensity can be changed arbitrarily and easily.

In particular, in the bulb-type lighting device 100 of the present embodiment, unlike the prior art, the distance between the illuminant 70 and the lens member 40 can be changed without rotating the lens member 40 . Accordingly, it is not necessary to perform alignment of the lens member accompanying the rotation of the lens member, and the above-mentioned distance can be easily changed (that is, easily changed). Moreover, since the said distance changes by the up-and-down movement of the lens member 70 accompanying the rotation of the lens position adjustment member 20, the lens member 70 can be stopped at an arbitrary position. This makes it possible to more flexibly set the characteristics of the irradiated light, such as the irradiated area and the irradiated intensity, than before.

In addition, as shown in FIG. 4 and the like, a reflective member 60 is provided between the illuminant 70 and the lens member 40 . Thereby, the directivity of the light emitted from the light-emitting element 71 of the light-emitting body 70 can be improved, and the emitted light can be prevented from leaking in an unexpected direction (for example, the left and right directions in FIG. 4 ). Therefore, almost all of the emitted light is emitted to the outside through the lens member 40 , so that the irradiation intensity can be increased. In addition, since light is prevented from leaking in the left and right directions, for example, light does not leak from between the lens position adjusting member 20 and the main body 30 , and the aesthetic appearance of the bulb-type lighting device 100 during use can be maintained. In addition, since there is no leakage of light, better light can be transmitted through the lens member 40 .

In addition, as shown in FIGS. 1 , 6 , etc., the lens position adjustment member 20 for adjusting the position of the lens member 40 is disposed on the outermost side of the bulb-type lighting device 100 . That is, the lens position adjustment member 20 is provided so as to surround the radiator 50 , and has the largest diameter in the bulb-type lighting device 100 . Therefore, when the user changes the characteristics such as irradiation area and irradiation intensity, when operating the lens position adjustment member 20, the lens position adjustment member 20 has the largest diameter, so it is easy to hold. Therefore, the user can rotate the lens position adjustment member 20 with a simple operation (that is, the operation is simple). Furthermore, through such an operation, the position of the lens member 40 can be easily changed, and characteristics such as the irradiation area and the irradiation intensity can be easily changed.

In addition, in the bulb-type lighting device 100 of the present embodiment, the rotational force of the lens position adjusting member 20 is used as it is as a driving force for moving the lens member 40 in the vertical direction. Specifically, as described with reference to FIG. 4 , FIG. 5 , etc., the lens member 40 is rotatably supported by the lens position adjustment member 20 . Further, the lens member 40 also moves in the vertical direction as the lens position adjusting member 20 moves in the vertical direction due to the sliding of the convex portion 64 in the guide groove 21 .

Therefore, in the bulb-type lighting device 100 , there is no mechanism for moving the lens 40 by driving the other arbitrary member after the rotational force of the lens position adjusting member 20 is transmitted to the other arbitrary member. Therefore, the number of components constituting the bulb-type lighting device 100 can be reduced. Furthermore, characteristics such as irradiation area and irradiation intensity can be changed with a simple structure.

Furthermore, since the lens member 40 can be moved without any other member, the friction between members is reduced, and the force for moving the lens member 40 (the force for rotating the lens position adjustment member 20 ) can be reduced. Thereby, regardless of the user, the position of the lens member 40 can be easily changed, and characteristics such as the irradiation area and the irradiation intensity can be changed. Furthermore, since the number of components is reduced, it is possible to reduce the frequency of occurrence of poor contact and the like, and it is possible to improve the durability of the bulb-type lighting device 100 .

In addition, the bulb-type lighting device 100 according to this embodiment includes a base 31 (see FIG. 1 and the like), and can be used as it is by being connected to a general-purpose socket. Therefore, for example, the light bulb-type lighting device 100 can be used without introducing new equipment or equipment by using sockets already installed on the roof, walls, or the like. Therefore, the installation place is not limited, and it can be used in various places.

<Modification>

The present embodiment has been described above, but the present invention is not limited to the above-described embodiment, and can be changed arbitrarily within a range not departing from the gist of the present invention.

For example, it is not necessary to use the reflection member 60, and it can be omitted as appropriate. When the reflective member 60 is omitted, for example, a convex portion corresponding to the convex portion 64 may be provided on the side surface of the illuminant 70 , and the convex portion may be fitted into the guide groove 21 of the lens position adjusting member 20 . That is, the member on which the convex portion 64 is provided is not limited to the reflective member 60 constituting the main body portion 30 , and may be the light emitter 70 , the radiator 50 , and the like.

Also, for example, a plurality of small grooves or the like may be provided at predetermined intervals in the guide groove 21 of the lens position adjusting member 20 to generate a click feeling at each predetermined interval when the lens position adjusting member 20 is rotated. Thereby, for example, when it is desired to have an equal irradiation area in a plurality of bulb-type lighting devices, the rotation angles of the lens position adjusting members 20 of all the bulb-type lighting devices can be easily set. In addition, even when the time of use is different, the same lighting area and the like can be obtained each time. Further, the position of the lens member 40 can be more stably fixed by providing a small groove or the like.

In addition, the protrusions and recesses (including the guide groove 21 ) provided in the above-described embodiments can be replaced with each other. That is, for example, a protrusion may be provided on the inner surface of the lens position adjustment member 20 and a guide groove may be provided on the side surface of the reflection member 60 so as to fit therewith. That is, in the embodiment shown in FIG. ), but for example, a convex portion (second convex portion) may be formed on the inner surface of the lens position adjustment member 20 and a guide groove (second guide groove) may be provided on the side surface of the main body 30 such as the reflection member 60 .

In addition, the number of protrusions and recesses (including the guide groove 21 ) provided can be appropriately changed. For example, in this embodiment, three guide grooves 21 are provided corresponding to the number of protrusions 64 , but the number of guide grooves 21 can be appropriately changed. However, it is preferable to provide a plurality of guide grooves 21 from the viewpoint that the position of the lens 41 can be adjusted more reliably. Furthermore, the number of protrusions 64 may also be appropriately determined according to the number of guide grooves 21 provided. Further, for example, the convex portion 22 provided on the inner surface of the lens position adjusting member 20 can also be appropriately changed, but it is preferable to provide a plurality of convex portions 22 from the viewpoint of holding the lens 41 more reliably.

In addition, the number of light emitting elements 71 included in the illuminant 70 and the number of lenses 41 included in the lens member 40 can be appropriately changed. That is, if a plurality of light emitting elements 71 are provided, any number may be provided. In addition, the number of lenses 41 is determined according to the number of light emitting elements 71 provided.

In addition, the type of the light-emitting element 71 included in the light-emitting body 70 is not limited to LED at all. For example, the light emitting element 71 may be any element such as organic electroluminescence.

In addition, the bulb-type lighting device can be configured by adding, switching, deleting, and the like to arbitrary units, components, and the like within a range that does not depart from the gist of the present invention.

Claims (1)

1. a bulb type lighting device, is characterized in that, comprising:

Be disposed at bulb type lighting device main body and possess the illuminator of multiple light-emitting components;

Lenticular unit, it comprises and described multiple light-emitting components multiple lens of relative configuration respectivelyWith the anti-rotation parts that prevent that self from rotating;

Rotatably form and support the circular lens position adjustment part of described lenticular unitPart; With

Lenticular unit travel mechanism, it is to maintain the relative pass of described light-emitting component and described lensThe state of system makes described lenticular unit move at the optical axis direction of the light of described light-emitting component ejaculation,

Described lenticular unit travel mechanism is configured to, and follows by described lens position adjustment componentThe rotation of described lens position adjustment component and moving at described optical axis direction, makes described lensParts move at described optical axis direction,

The medial surface of described lens position adjustment component be provided with have inclination the first guide groove orThe first protuberance,

Be provided with in the side of described bulb type lighting device main body with described the first guide groove slidablyChimeric the second protuberance or second of the inclination that has of chimeric described the first protuberance slidably in ground ledGroove,

By the rotation of described lens position adjustment component, described the second protuberance is led described firstSlide in groove, or described the first protuberance slides in described the second guide groove, described in making to be supported onThe lenticular unit of lens position adjustment component moves at described optical axis direction,

Described bulb type lighting device main body has between described illuminator and described lenticular unitReflection part, this reflection part comprises:

Photoconduction portals, and it makes to arrive described lenticular unit from the light of described light-emitting component; With

Reflecting plate, it is formed on described photoconduction and portals around, makes from the derivation of portalling of described photoconductionLight reflection,

Described protuberance is arranged on the side of described reflection part.